Merge pull request #44354 from thaJeztah/vendor_containerd_1.6.9

vendor: github.com/containerd/containerd v1.6.9

vendor.mod

@@ -20,7 +20,7 @@ require (
 	github.com/bsphere/le_go v0.0.0-20200109081728-fc06dab2caa8
 	github.com/cloudflare/cfssl v0.0.0-20180323000720-5d63dbd981b5
 	github.com/containerd/cgroups v1.0.4
-	github.com/containerd/containerd v1.6.8
+	github.com/containerd/containerd v1.6.9
 	github.com/containerd/continuity v0.3.0
 	github.com/containerd/fifo v1.0.0
 	github.com/containerd/typeurl v1.0.2
@@ -85,8 +85,8 @@ require (
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	golang.org/x/sys v0.0.0-20221006211917-84dc82d7e875
 	golang.org/x/time v0.0.0-20211116232009-f0f3c7e86c11
-	google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa
-	google.golang.org/grpc v1.45.0
+	google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21
+	google.golang.org/grpc v1.47.0
 	gotest.tools/v3 v3.3.0
 )
 
@@ -163,7 +163,7 @@ require (
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/api v0.54.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
 )
 
 replace (

vendor.sum

@@ -193,6 +193,7 @@ github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XP
 github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211001041855-01bcc9b48dfe/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
 github.com/cockroachdb/datadriven v0.0.0-20200714090401-bf6692d28da5 h1:xD/lrqdvwsc+O2bjSSi3YqY73Ke3LAiSCx49aCesA0E=
@@ -245,8 +246,8 @@ github.com/containerd/containerd v1.5.1/go.mod h1:0DOxVqwDy2iZvrZp2JUx/E+hS0UNTV
 github.com/containerd/containerd v1.5.7/go.mod h1:gyvv6+ugqY25TiXxcZC3L5yOeYgEw0QMhscqVp1AR9c=
 github.com/containerd/containerd v1.5.8/go.mod h1:YdFSv5bTFLpG2HIYmfqDpSYYTDX+mc5qtSuYx1YUb/s=
 github.com/containerd/containerd v1.6.1/go.mod h1:1nJz5xCZPusx6jJU8Frfct988y0NpumIq9ODB0kLtoE=
-github.com/containerd/containerd v1.6.8 h1:h4dOFDwzHmqFEP754PgfgTeVXFnLiRc6kiqC7tplDJs=
-github.com/containerd/containerd v1.6.8/go.mod h1:By6p5KqPK0/7/CgO/A6t/Gz+CUYUu2zf1hUaaymVXB0=
+github.com/containerd/containerd v1.6.9 h1:IN/r8DUes/B5lEGTNfIiUkfZBtIQJGx2ai703dV6lRA=
+github.com/containerd/containerd v1.6.9/go.mod h1:XVicUvkxOrftE2Q1YWUXgZwkkAxwQYNOFzYWvfVfEfQ=
 github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
 github.com/containerd/continuity v0.0.0-20190815185530-f2a389ac0a02/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
 github.com/containerd/continuity v0.0.0-20191127005431-f65d91d395eb/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
@@ -405,6 +406,7 @@ github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.m
 github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
 github.com/envoyproxy/go-control-plane v0.9.10-0.20210907150352-cf90f659a021/go.mod h1:AFq3mo9L8Lqqiid3OhADV3RfLJnjiw63cSpi+fDTRC0=
+github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1/go.mod h1:KJwIaB5Mv44NWtYuAOFCVOjcI94vtpEz2JU/D2v6IjE=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/evanphx/json-patch v4.9.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/evanphx/json-patch v4.11.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
@@ -1617,8 +1619,9 @@ google.golang.org/genproto v0.0.0-20210728212813-7823e685a01f/go.mod h1:ob2IJxKr
 google.golang.org/genproto v0.0.0-20210805201207-89edb61ffb67/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48=
 google.golang.org/genproto v0.0.0-20210813162853-db860fec028c/go.mod h1:cFeNkxwySK631ADgubI+/XFU/xp8FD5KIVV4rj8UC5w=
 google.golang.org/genproto v0.0.0-20210831024726-fe130286e0e2/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
-google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa h1:I0YcKz0I7OAhddo7ya8kMnvprhcWM045PmkBdMO9zN0=
 google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21 h1:hrbNEivu7Zn1pxvHk6MBrq9iE22woVILTHqexqBxe6I=
+google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21/go.mod h1:RAyBrSAP7Fh3Nc84ghnVLDPuV51xc9agzmm4Ph6i0Q4=
 google.golang.org/grpc v0.0.0-20160317175043-d3ddb4469d5a/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
@@ -1651,8 +1654,10 @@ google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9K
 google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/grpc v1.44.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
-google.golang.org/grpc v1.45.0 h1:NEpgUqV3Z+ZjkqMsxMg11IaDrXY4RY6CQukSGK0uI1M=
 google.golang.org/grpc v1.45.0/go.mod h1:lN7owxKUQEqMfSyQikvvk5tf/6zMPsrK+ONuO11+0rQ=
+google.golang.org/grpc v1.46.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
+google.golang.org/grpc v1.47.0 h1:9n77onPX5F3qfFCqjy9dhn8PbNQsIKeVU04J9G7umt8=
+google.golang.org/grpc v1.47.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -1666,8 +1671,9 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -1703,7 +1709,7 @@ gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=
 gotest.tools/v3 v3.0.3/go.mod h1:Z7Lb0S5l+klDB31fvDQX8ss/FlKDxtlFlw3Oa8Ymbl8=

vendor/github.com/containerd/containerd/.mailmap

@@ -102,6 +102,7 @@ Ross Boucher <rboucher@gmail.com>
 Ruediger Maass <ruediger.maass@de.ibm.com>
 Rui Cao <ruicao@alauda.io> <ruicao@alauda.io>
 Sakeven Jiang <jc5930@sina.cn>
+Samuel Karp <me@samuelkarp.com> <samuelkarp@google.com>
 Samuel Karp <me@samuelkarp.com> <skarp@amazon.com>
 Seth Pellegrino <spellegrino@newrelic.com> <30441101+sethp-nr@users.noreply.github.com>
 Shaobao Feng <shaobao.feng@huawei.com>

vendor/github.com/containerd/containerd/.zuul.yaml

@@ -1,35 +0,0 @@
-- project:
-    name: containerd/containerd
-    merge-mode: merge
-    check:
-      jobs:
-        - containerd-build-arm64
-        - containerd-test-arm64
-        - containerd-integration-test-arm64
-
-- job:
-    name: containerd-build-arm64
-    parent: init-test
-    description: |
-      Containerd build in openlab cluster.
-    run: .zuul/playbooks/containerd-build/run.yaml
-    nodeset: ubuntu-xenial-arm64-openlab
-    voting: false
-
-- job:
-    name: containerd-test-arm64
-    parent: init-test
-    description: |
-      Containerd unit tests in openlab cluster.
-    run: .zuul/playbooks/containerd-build/unit-test.yaml
-    nodeset: ubuntu-xenial-arm64-openlab
-    voting: false
-
-- job:
-    name: containerd-integration-test-arm64
-    parent: init-test
-    description: |
-      Containerd unit tests in openlab cluster.
-    run: .zuul/playbooks/containerd-build/integration-test.yaml
-    nodeset: ubuntu-xenial-arm64-openlab
-    voting: false

vendor/github.com/containerd/containerd/Makefile

@@ -223,6 +223,16 @@ cri-integration: binaries bin/cri-integration.test ## run cri integration tests
 	@bash -x ./script/test/cri-integration.sh
 	@rm -rf bin/cri-integration.test
 
+# build runc shimv2 with failpoint control, only used by integration test
+bin/containerd-shim-runc-fp-v1: integration/failpoint/cmd/containerd-shim-runc-fp-v1 FORCE
+	@echo "$(WHALE) $@"
+	@CGO_ENABLED=${SHIM_CGO_ENABLED} $(GO) build ${GO_BUILD_FLAGS} -o $@ ${SHIM_GO_LDFLAGS} ${GO_TAGS} ./integration/failpoint/cmd/containerd-shim-runc-fp-v1
+
+# build CNI bridge plugin wrapper with failpoint support, only used by integration test
+bin/cni-bridge-fp: integration/failpoint/cmd/cni-bridge-fp FORCE
+	@echo "$(WHALE) $@"
+	@$(GO) build ${GO_BUILD_FLAGS} -o $@ ./integration/failpoint/cmd/cni-bridge-fp
+
 benchmark: ## run benchmarks tests
 	@echo "$(WHALE) $@"
 	@$(GO) test ${TESTFLAGS} -bench . -run Benchmark -test.root
@@ -369,6 +379,8 @@ clean-test: ## clean up debris from previously failed tests
 	@rm -rf /run/containerd/fifo/*
 	@rm -rf /run/containerd-test/*
 	@rm -rf bin/cri-integration.test
+	@rm -rf bin/cni-bridge-fp
+	@rm -rf bin/containerd-shim-runc-fp-v1
 
 install: ## install binaries
 	@echo "$(WHALE) $@ $(BINARIES)"

vendor/github.com/containerd/containerd/Vagrantfile

@@ -91,7 +91,7 @@ EOF
   config.vm.provision "install-golang", type: "shell", run: "once" do |sh|
     sh.upload_path = "/tmp/vagrant-install-golang"
     sh.env = {
-        'GO_VERSION': ENV['GO_VERSION'] || "1.17.13",
+        'GO_VERSION': ENV['GO_VERSION'] || "1.18.7",
     }
     sh.inline = <<~SHELL
         #!/usr/bin/env bash

vendor/github.com/containerd/containerd/archive/tar.go

@@ -120,6 +120,8 @@ const (
 	whiteoutOpaqueDir = whiteoutMetaPrefix + ".opq"
 
 	paxSchilyXattr = "SCHILY.xattr."
+
+	userXattrPrefix = "user."
 )
 
 // Apply applies a tar stream of an OCI style diff tar.
@@ -393,11 +395,19 @@ func createTarFile(ctx context.Context, path, extractDir string, hdr *tar.Header
 		if strings.HasPrefix(key, paxSchilyXattr) {
 			key = key[len(paxSchilyXattr):]
 			if err := setxattr(path, key, value); err != nil {
+				if errors.Is(err, syscall.EPERM) && strings.HasPrefix(key, userXattrPrefix) {
+					// In the user.* namespace, only regular files and directories can have extended attributes.
+					// See https://man7.org/linux/man-pages/man7/xattr.7.html for details.
+					if fi, err := os.Lstat(path); err == nil && (!fi.Mode().IsRegular() && !fi.Mode().IsDir()) {
+						log.G(ctx).WithError(err).Warnf("ignored xattr %s in archive", key)
+						continue
+					}
+				}
 				if errors.Is(err, syscall.ENOTSUP) {
 					log.G(ctx).WithError(err).Warnf("ignored xattr %s in archive", key)
 					continue
 				}
-				return err
+				return fmt.Errorf("failed to setxattr %q for key %q: %w", path, key, err)
 			}
 		}
 	}

vendor/github.com/containerd/containerd/archive/tar_unix.go

@@ -63,7 +63,7 @@ func setHeaderForSpecialDevice(hdr *tar.Header, name string, fi os.FileInfo) err
 	}
 
 	// Rdev is int32 on darwin/bsd, int64 on linux/solaris
-	rdev := uint64(s.Rdev) // nolint: unconvert
+	rdev := uint64(s.Rdev) //nolint:unconvert
 
 	// Currently go does not fill in the major/minors
 	if s.Mode&syscall.S_IFBLK != 0 ||

vendor/github.com/containerd/containerd/content/helpers.go

@@ -26,10 +26,16 @@ import (
 	"time"
 
 	"github.com/containerd/containerd/errdefs"
+	"github.com/containerd/containerd/log"
 	"github.com/opencontainers/go-digest"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 )
 
+// maxResets is the no.of times the Copy() method can tolerate a reset of the body
+const maxResets = 5
+
+var ErrReset = errors.New("writer has been reset")
+
 var bufPool = sync.Pool{
 	New: func() interface{} {
 		buffer := make([]byte, 1<<20)
@@ -80,7 +86,7 @@ func WriteBlob(ctx context.Context, cs Ingester, ref string, r io.Reader, desc o
 			return fmt.Errorf("failed to open writer: %w", err)
 		}
 
-		return nil // all ready present
+		return nil // already present
 	}
 	defer cw.Close()
 
@@ -131,35 +137,63 @@ func OpenWriter(ctx context.Context, cs Ingester, opts ...WriterOpt) (Writer, er
 // the size or digest is unknown, these values may be empty.
 //
 // Copy is buffered, so no need to wrap reader in buffered io.
-func Copy(ctx context.Context, cw Writer, r io.Reader, size int64, expected digest.Digest, opts ...Opt) error {
+func Copy(ctx context.Context, cw Writer, or io.Reader, size int64, expected digest.Digest, opts ...Opt) error {
 	ws, err := cw.Status()
 	if err != nil {
 		return fmt.Errorf("failed to get status: %w", err)
 	}
-
+	r := or
 	if ws.Offset > 0 {
-		r, err = seekReader(r, ws.Offset, size)
+		r, err = seekReader(or, ws.Offset, size)
 		if err != nil {
 			return fmt.Errorf("unable to resume write to %v: %w", ws.Ref, err)
 		}
 	}
 
-	copied, err := copyWithBuffer(cw, r)
-	if err != nil {
-		return fmt.Errorf("failed to copy: %w", err)
-	}
-	if size != 0 && copied < size-ws.Offset {
-		// Short writes would return its own error, this indicates a read failure
-		return fmt.Errorf("failed to read expected number of bytes: %w", io.ErrUnexpectedEOF)
-	}
-
-	if err := cw.Commit(ctx, size, expected, opts...); err != nil {
-		if !errdefs.IsAlreadyExists(err) {
-			return fmt.Errorf("failed commit on ref %q: %w", ws.Ref, err)
+	for i := 0; i < maxResets; i++ {
+		if i >= 1 {
+			log.G(ctx).WithField("digest", expected).Debugf("retrying copy due to reset")
+		}
+		copied, err := copyWithBuffer(cw, r)
+		if errors.Is(err, ErrReset) {
+			ws, err := cw.Status()
+			if err != nil {
+				return fmt.Errorf("failed to get status: %w", err)
+			}
+			r, err = seekReader(or, ws.Offset, size)
+			if err != nil {
+				return fmt.Errorf("unable to resume write to %v: %w", ws.Ref, err)
+			}
+			continue
+		}
+		if err != nil {
+			return fmt.Errorf("failed to copy: %w", err)
+		}
+		if size != 0 && copied < size-ws.Offset {
+			// Short writes would return its own error, this indicates a read failure
+			return fmt.Errorf("failed to read expected number of bytes: %w", io.ErrUnexpectedEOF)
+		}
+		if err := cw.Commit(ctx, size, expected, opts...); err != nil {
+			if errors.Is(err, ErrReset) {
+				ws, err := cw.Status()
+				if err != nil {
+					return fmt.Errorf("failed to get status: %w", err)
+				}
+				r, err = seekReader(or, ws.Offset, size)
+				if err != nil {
+					return fmt.Errorf("unable to resume write to %v: %w", ws.Ref, err)
+				}
+				continue
+			}
+			if !errdefs.IsAlreadyExists(err) {
+				return fmt.Errorf("failed commit on ref %q: %w", ws.Ref, err)
+			}
 		}
+		return nil
 	}
 
-	return nil
+	log.G(ctx).WithField("digest", expected).Errorf("failed to copy after %d retries", maxResets)
+	return fmt.Errorf("failed to copy after %d retries", maxResets)
 }
 
 // CopyReaderAt copies to a writer from a given reader at for the given

vendor/github.com/containerd/containerd/content/local/store.go

@@ -643,7 +643,6 @@ func (s *store) ingestRoot(ref string) string {
 // - root: entire ingest directory
 // - ref: name of the starting ref, must be unique
 // - data: file where data is written
-//
 func (s *store) ingestPaths(ref string) (string, string, string) {
 	var (
 		fp = s.ingestRoot(ref)

vendor/github.com/containerd/containerd/filters/filter.go

@@ -65,7 +65,6 @@
 // ```
 // name==foo,labels.bar
 // ```
-//
 package filters
 
 import (

vendor/github.com/containerd/containerd/filters/parser.go

@@ -45,7 +45,6 @@ field     := quoted | [A-Za-z] [A-Za-z0-9_]+
 operator  := "==" | "!=" | "~="
 value     := quoted | [^\s,]+
 quoted    := <go string syntax>
-
 */
 func Parse(s string) (Filter, error) {
 	// special case empty to match all

vendor/github.com/containerd/containerd/filters/quote.go

@@ -31,10 +31,10 @@ var errQuoteSyntax = errors.New("quote syntax error")
 // or character literal represented by the string s.
 // It returns four values:
 //
-//	1) value, the decoded Unicode code point or byte value;
-//	2) multibyte, a boolean indicating whether the decoded character requires a multibyte UTF-8 representation;
-//	3) tail, the remainder of the string after the character; and
-//	4) an error that will be nil if the character is syntactically valid.
+//  1. value, the decoded Unicode code point or byte value;
+//  2. multibyte, a boolean indicating whether the decoded character requires a multibyte UTF-8 representation;
+//  3. tail, the remainder of the string after the character; and
+//  4. an error that will be nil if the character is syntactically valid.
 //
 // The second argument, quote, specifies the type of literal being parsed
 // and therefore which escaped quote character is permitted.

vendor/github.com/containerd/containerd/images/archive/exporter.go

@@ -182,6 +182,9 @@ func Export(ctx context.Context, store content.Provider, writer io.Writer, opts
 		case images.MediaTypeDockerSchema2ManifestList, ocispec.MediaTypeImageIndex:
 			d, ok := resolvedIndex[desc.Digest]
 			if !ok {
+				if err := desc.Digest.Validate(); err != nil {
+					return err
+				}
 				records = append(records, blobRecord(store, desc, &eo.blobRecordOptions))
 
 				p, err := content.ReadBlob(ctx, store, desc)
@@ -271,6 +274,9 @@ func Export(ctx context.Context, store content.Provider, writer io.Writer, opts
 func getRecords(ctx context.Context, store content.Provider, desc ocispec.Descriptor, algorithms map[string]struct{}, brOpts *blobRecordOptions) ([]tarRecord, error) {
 	var records []tarRecord
 	exportHandler := func(ctx context.Context, desc ocispec.Descriptor) ([]ocispec.Descriptor, error) {
+		if err := desc.Digest.Validate(); err != nil {
+			return nil, err
+		}
 		records = append(records, blobRecord(store, desc, brOpts))
 		algorithms[desc.Digest.Algorithm().String()] = struct{}{}
 		return nil, nil
@@ -428,6 +434,9 @@ func manifestsRecord(ctx context.Context, store content.Provider, manifests map[
 		}
 
 		dgst := manifest.Config.Digest
+		if err := dgst.Validate(); err != nil {
+			return tarRecord{}, err
+		}
 		mfsts[i].Config = path.Join("blobs", dgst.Algorithm().String(), dgst.Encoded())
 		for _, l := range manifest.Layers {
 			path := path.Join("blobs", l.Digest.Algorithm().String(), l.Digest.Encoded())

vendor/github.com/containerd/containerd/images/archive/importer.go

@@ -55,12 +55,12 @@ func WithImportCompression() ImportOpt {
 }
 
 // ImportIndex imports an index from a tar archive image bundle
-// - implements Docker v1.1, v1.2 and OCI v1.
-// - prefers OCI v1 when provided
-// - creates OCI index for Docker formats
-// - normalizes Docker references and adds as OCI ref name
-//      e.g. alpine:latest -> docker.io/library/alpine:latest
-// - existing OCI reference names are untouched
+//   - implements Docker v1.1, v1.2 and OCI v1.
+//   - prefers OCI v1 when provided
+//   - creates OCI index for Docker formats
+//   - normalizes Docker references and adds as OCI ref name
+//     e.g. alpine:latest -> docker.io/library/alpine:latest
+//   - existing OCI reference names are untouched
 func ImportIndex(ctx context.Context, store content.Store, reader io.Reader, opts ...ImportOpt) (ocispec.Descriptor, error) {
 	var (
 		tr = tar.NewReader(reader)
@@ -300,6 +300,9 @@ func resolveLayers(ctx context.Context, store content.Store, layerFiles []string
 		}
 		if s.GetCompression() == compression.Uncompressed {
 			if compress {
+				if err := desc.Digest.Validate(); err != nil {
+					return nil, err
+				}
 				ref := fmt.Sprintf("compress-blob-%s-%s", desc.Digest.Algorithm().String(), desc.Digest.Encoded())
 				labels := map[string]string{
 					"containerd.io/uncompressed": desc.Digest.String(),

vendor/github.com/containerd/containerd/metadata/buckets.go

@@ -26,7 +26,7 @@
 //
 // Generically, we try to do the following:
 //
-// 	<version>/<namespace>/<object>/<key> -> <field>
+//	<version>/<namespace>/<object>/<key> -> <field>
 //
 // version: Currently, this is "v1". Additions can be made to v1 in a backwards
 // compatible way. If the layout changes, a new version must be made, along
@@ -46,72 +46,73 @@
 // the structure is changed in addition to adding a migration and incrementing
 // the database version. Note that `╘══*...*` refers to maps with arbitrary
 // keys.
-//  ├──version : <varint>                        - Latest version, see migrations
-//  └──v1                                        - Schema version bucket
-//     ╘══*namespace*
-//        ├──labels
-//        │  ╘══*key* : <string>                 - Label value
-//        ├──image
-//        │  ╘══*image name*
-//        │     ├──createdat : <binary time>     - Created at
-//        │     ├──updatedat : <binary time>     - Updated at
-//        │     ├──target
-//        │     │  ├──digest : <digest>          - Descriptor digest
-//        │     │  ├──mediatype : <string>       - Descriptor media type
-//        │     │  └──size : <varint>            - Descriptor size
-//        │     └──labels
-//        │        ╘══*key* : <string>           - Label value
-//        ├──containers
-//        │  ╘══*container id*
-//        │     ├──createdat : <binary time>     - Created at
-//        │     ├──updatedat : <binary time>     - Updated at
-//        │     ├──spec : <binary>               - Proto marshaled spec
-//        │     ├──image : <string>              - Image name
-//        │     ├──snapshotter : <string>        - Snapshotter name
-//        │     ├──snapshotKey : <string>        - Snapshot key
-//        │     ├──runtime
-//        │     │  ├──name : <string>            - Runtime name
-//        │     │  ├──extensions
-//        │     │  │  ╘══*name* : <binary>       - Proto marshaled extension
-//        │     │  └──options : <binary>         - Proto marshaled options
-//        │     └──labels
-//        │        ╘══*key* : <string>           - Label value
-//        ├──snapshots
-//        │  ╘══*snapshotter*
-//        │     ╘══*snapshot key*
-//        │        ├──name : <string>            - Snapshot name in backend
-//        │        ├──createdat : <binary time>  - Created at
-//        │        ├──updatedat : <binary time>  - Updated at
-//        │        ├──parent : <string>          - Parent snapshot name
-//        │        ├──children
-//        │        │  ╘══*snapshot key* : <nil>  - Child snapshot reference
-//        │        └──labels
-//        │           ╘══*key* : <string>        - Label value
-//        ├──content
-//        │  ├──blob
-//        │  │  ╘══*blob digest*
-//        │  │     ├──createdat : <binary time>  - Created at
-//        │  │     ├──updatedat : <binary time>  - Updated at
-//        │  │     ├──size : <varint>            - Blob size
-//        │  │     └──labels
-//        │  │        ╘══*key* : <string>        - Label value
-//        │  └──ingests
-//        │     ╘══*ingest reference*
-//        │        ├──ref : <string>             - Ingest reference in backend
-//        │        ├──expireat : <binary time>   - Time to expire ingest
-//        │        └──expected : <digest>        - Expected commit digest
-//        └──leases
-//           ╘══*lease id*
-//              ├──createdat : <binary time>     - Created at
-//              ├──labels
-//              │  ╘══*key* : <string>           - Label value
-//              ├──snapshots
-//              │  ╘══*snapshotter*
-//              │     ╘══*snapshot key* : <nil>  - Snapshot reference
-//              ├──content
-//              │  ╘══*blob digest* : <nil>      - Content blob reference
-//              └──ingests
-//                 ╘══*ingest reference* : <nil> - Content ingest reference
+//
+//	├──version : <varint>                        - Latest version, see migrations
+//	└──v1                                        - Schema version bucket
+//	   ╘══*namespace*
+//	      ├──labels
+//	      │  ╘══*key* : <string>                 - Label value
+//	      ├──image
+//	      │  ╘══*image name*
+//	      │     ├──createdat : <binary time>     - Created at
+//	      │     ├──updatedat : <binary time>     - Updated at
+//	      │     ├──target
+//	      │     │  ├──digest : <digest>          - Descriptor digest
+//	      │     │  ├──mediatype : <string>       - Descriptor media type
+//	      │     │  └──size : <varint>            - Descriptor size
+//	      │     └──labels
+//	      │        ╘══*key* : <string>           - Label value
+//	      ├──containers
+//	      │  ╘══*container id*
+//	      │     ├──createdat : <binary time>     - Created at
+//	      │     ├──updatedat : <binary time>     - Updated at
+//	      │     ├──spec : <binary>               - Proto marshaled spec
+//	      │     ├──image : <string>              - Image name
+//	      │     ├──snapshotter : <string>        - Snapshotter name
+//	      │     ├──snapshotKey : <string>        - Snapshot key
+//	      │     ├──runtime
+//	      │     │  ├──name : <string>            - Runtime name
+//	      │     │  ├──extensions
+//	      │     │  │  ╘══*name* : <binary>       - Proto marshaled extension
+//	      │     │  └──options : <binary>         - Proto marshaled options
+//	      │     └──labels
+//	      │        ╘══*key* : <string>           - Label value
+//	      ├──snapshots
+//	      │  ╘══*snapshotter*
+//	      │     ╘══*snapshot key*
+//	      │        ├──name : <string>            - Snapshot name in backend
+//	      │        ├──createdat : <binary time>  - Created at
+//	      │        ├──updatedat : <binary time>  - Updated at
+//	      │        ├──parent : <string>          - Parent snapshot name
+//	      │        ├──children
+//	      │        │  ╘══*snapshot key* : <nil>  - Child snapshot reference
+//	      │        └──labels
+//	      │           ╘══*key* : <string>        - Label value
+//	      ├──content
+//	      │  ├──blob
+//	      │  │  ╘══*blob digest*
+//	      │  │     ├──createdat : <binary time>  - Created at
+//	      │  │     ├──updatedat : <binary time>  - Updated at
+//	      │  │     ├──size : <varint>            - Blob size
+//	      │  │     └──labels
+//	      │  │        ╘══*key* : <string>        - Label value
+//	      │  └──ingests
+//	      │     ╘══*ingest reference*
+//	      │        ├──ref : <string>             - Ingest reference in backend
+//	      │        ├──expireat : <binary time>   - Time to expire ingest
+//	      │        └──expected : <digest>        - Expected commit digest
+//	      └──leases
+//	         ╘══*lease id*
+//	            ├──createdat : <binary time>     - Created at
+//	            ├──labels
+//	            │  ╘══*key* : <string>           - Label value
+//	            ├──snapshots
+//	            │  ╘══*snapshotter*
+//	            │     ╘══*snapshot key* : <nil>  - Snapshot reference
+//	            ├──content
+//	            │  ╘══*blob digest* : <nil>      - Content blob reference
+//	            └──ingests
+//	               ╘══*ingest reference* : <nil> - Content ingest reference
 package metadata
 
 import (

vendor/github.com/containerd/containerd/namespaces/store.go

@@ -24,8 +24,6 @@ import "context"
 // oriented. A namespace is really just a name and a set of labels. Objects
 // that belong to a namespace are returned when the namespace is assigned to a
 // given context.
-//
-//
 type Store interface {
 	Create(ctx context.Context, namespace string, labels map[string]string) error
 	Labels(ctx context.Context, namespace string) (map[string]string, error)

vendor/github.com/containerd/containerd/oci/spec_opts.go

@@ -518,7 +518,8 @@ func WithNamespacedCgroup() SpecOpts {
 
 // WithUser sets the user to be used within the container.
 // It accepts a valid user string in OCI Image Spec v1.0.0:
-//   user, uid, user:group, uid:gid, uid:group, user:gid
+//
+//	user, uid, user:group, uid:gid, uid:group, user:gid
 func WithUser(userstr string) SpecOpts {
 	return func(ctx context.Context, client Client, c *containers.Container, s *Spec) error {
 		setProcess(s)
@@ -1120,20 +1121,13 @@ func WithDefaultUnixDevices(_ context.Context, _ Client, _ *containers.Container
 			Allow:  true,
 		},
 		{
+			// "dev/ptmx"
 			Type:   "c",
 			Major:  intptr(5),
 			Minor:  intptr(2),
 			Access: rwm,
 			Allow:  true,
 		},
-		{
-			// tuntap
-			Type:   "c",
-			Major:  intptr(10),
-			Minor:  intptr(200),
-			Access: rwm,
-			Allow:  true,
-		},
 	}...)
 	return nil
 }

vendor/github.com/containerd/containerd/oci/spec_opts_nonlinux.go

@@ -28,19 +28,22 @@ import (
 
 // WithAllCurrentCapabilities propagates the effective capabilities of the caller process to the container process.
 // The capability set may differ from WithAllKnownCapabilities when running in a container.
-//nolint: deadcode, unused
+//
+//nolint:deadcode,unused
 var WithAllCurrentCapabilities = func(ctx context.Context, client Client, c *containers.Container, s *Spec) error {
 	return WithCapabilities(nil)(ctx, client, c, s)
 }
 
 // WithAllKnownCapabilities sets all the the known linux capabilities for the container process
-//nolint: deadcode, unused
+//
+//nolint:deadcode,unused
 var WithAllKnownCapabilities = func(ctx context.Context, client Client, c *containers.Container, s *Spec) error {
 	return WithCapabilities(nil)(ctx, client, c, s)
 }
 
 // WithCPUShares sets the container's cpu shares
-//nolint: deadcode, unused
+//
+//nolint:deadcode,unused
 func WithCPUShares(shares uint64) SpecOpts {
 	return func(ctx context.Context, _ Client, c *containers.Container, s *Spec) error {
 		return nil

vendor/github.com/containerd/containerd/pkg/apparmor/apparmor.go

@@ -18,10 +18,11 @@ package apparmor
 
 // HostSupports returns true if apparmor is enabled for the host, // On non-Linux returns false
 // On Linux returns true if apparmor_parser is enabled, and if we
-//  are not running docker-in-docker.
 //
-//  It is a modified version of libcontainer/apparmor.IsEnabled(), which does not
-//  check for apparmor_parser to be present, or if we're running docker-in-docker.
+//	are not running docker-in-docker.
+//
+//	It is a modified version of libcontainer/apparmor.IsEnabled(), which does not
+//	check for apparmor_parser to be present, or if we're running docker-in-docker.
 func HostSupports() bool {
 	return hostSupports()
 }

vendor/github.com/containerd/containerd/platforms/platforms.go

@@ -27,40 +27,40 @@
 // The vast majority of use cases should simply use the match function with
 // user input. The first step is to parse a specifier into a matcher:
 //
-//   m, err := Parse("linux")
-//   if err != nil { ... }
+//	m, err := Parse("linux")
+//	if err != nil { ... }
 //
 // Once you have a matcher, use it to match against the platform declared by a
 // component, typically from an image or runtime. Since extracting an images
 // platform is a little more involved, we'll use an example against the
 // platform default:
 //
-//   if ok := m.Match(Default()); !ok { /* doesn't match */ }
+//	if ok := m.Match(Default()); !ok { /* doesn't match */ }
 //
 // This can be composed in loops for resolving runtimes or used as a filter for
 // fetch and select images.
 //
 // More details of the specifier syntax and platform spec follow.
 //
-// Declaring Platform Support
+// # Declaring Platform Support
 //
 // Components that have strict platform requirements should use the OCI
 // platform specification to declare their support. Typically, this will be
 // images and runtimes that should make these declaring which platform they
 // support specifically. This looks roughly as follows:
 //
-//   type Platform struct {
-//	   Architecture string
-//	   OS           string
-//	   Variant      string
-//   }
+//	  type Platform struct {
+//		   Architecture string
+//		   OS           string
+//		   Variant      string
+//	  }
 //
 // Most images and runtimes should at least set Architecture and OS, according
 // to their GOARCH and GOOS values, respectively (follow the OCI image
 // specification when in doubt). ARM should set variant under certain
 // discussions, which are outlined below.
 //
-// Platform Specifiers
+// # Platform Specifiers
 //
 // While the OCI platform specifications provide a tool for components to
 // specify structured information, user input typically doesn't need the full
@@ -77,7 +77,7 @@
 // where the architecture may be known but a runtime may support images from
 // different operating systems.
 //
-// Normalization
+// # Normalization
 //
 // Because not all users are familiar with the way the Go runtime represents
 // platforms, several normalizations have been provided to make this package
@@ -85,17 +85,17 @@
 //
 // The following are performed for architectures:
 //
-//   Value    Normalized
-//   aarch64  arm64
-//   armhf    arm
-//   armel    arm/v6
-//   i386     386
-//   x86_64   amd64
-//   x86-64   amd64
+//	Value    Normalized
+//	aarch64  arm64
+//	armhf    arm
+//	armel    arm/v6
+//	i386     386
+//	x86_64   amd64
+//	x86-64   amd64
 //
 // We also normalize the operating system `macos` to `darwin`.
 //
-// ARM Support
+// # ARM Support
 //
 // To qualify ARM architecture, the Variant field is used to qualify the arm
 // version. The most common arm version, v7, is represented without the variant

vendor/github.com/containerd/containerd/process.go

@@ -71,8 +71,10 @@ type ExitStatus struct {
 
 // Result returns the exit code and time of the exit status.
 // An error may be returned here to which indicates there was an error
-//   at some point while waiting for the exit status. It does not signify
-//   an error with the process itself.
+//
+//	at some point while waiting for the exit status. It does not signify
+//	an error with the process itself.
+//
 // If an error is returned, the process may still be running.
 func (s ExitStatus) Result() (uint32, time.Time, error) {
 	return s.code, s.exitedAt, s.err

vendor/github.com/containerd/containerd/reference/docker/reference.go

@@ -19,13 +19,13 @@
 //
 // Grammar
 //
-// 	reference                       := name [ ":" tag ] [ "@" digest ]
+//	reference                       := name [ ":" tag ] [ "@" digest ]
 //	name                            := [domain '/'] path-component ['/' path-component]*
 //	domain                          := domain-component ['.' domain-component]* [':' port-number]
 //	domain-component                := /([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])/
 //	port-number                     := /[0-9]+/
 //	path-component                  := alpha-numeric [separator alpha-numeric]*
-// 	alpha-numeric                   := /[a-z0-9]+/
+//	alpha-numeric                   := /[a-z0-9]+/
 //	separator                       := /[_.]|__|[-]*/
 //
 //	tag                             := /[\w][\w.-]{0,127}/

vendor/github.com/containerd/containerd/remotes/docker/pusher.go

@@ -24,6 +24,7 @@ import (
 	"net/http"
 	"net/url"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/containerd/containerd/content"
@@ -261,27 +262,20 @@ func (p dockerPusher) push(ctx context.Context, desc ocispec.Descriptor, ref str
 
 	// TODO: Support chunked upload
 
-	pr, pw := io.Pipe()
-	respC := make(chan response, 1)
-	body := io.NopCloser(pr)
+	pushw := newPushWriter(p.dockerBase, ref, desc.Digest, p.tracker, isManifest)
 
 	req.body = func() (io.ReadCloser, error) {
-		if body == nil {
-			return nil, errors.New("cannot reuse body, request must be retried")
-		}
-		// Only use the body once since pipe cannot be seeked
-		ob := body
-		body = nil
-		return ob, nil
+		pr, pw := io.Pipe()
+		pushw.setPipe(pw)
+		return io.NopCloser(pr), nil
 	}
 	req.size = desc.Size
 
 	go func() {
-		defer close(respC)
 		resp, err := req.doWithRetries(ctx, nil)
 		if err != nil {
-			respC <- response{err: err}
-			pr.CloseWithError(err)
+			pushw.setError(err)
+			pushw.Close()
 			return
 		}
 
@@ -290,20 +284,13 @@ func (p dockerPusher) push(ctx context.Context, desc ocispec.Descriptor, ref str
 		default:
 			err := remoteserrors.NewUnexpectedStatusErr(resp)
 			log.G(ctx).WithField("resp", resp).WithField("body", string(err.(remoteserrors.ErrUnexpectedStatus).Body)).Debug("unexpected response")
-			pr.CloseWithError(err)
+			pushw.setError(err)
+			pushw.Close()
 		}
-		respC <- response{Response: resp}
+		pushw.setResponse(resp)
 	}()
 
-	return &pushWriter{
-		base:       p.dockerBase,
-		ref:        ref,
-		pipe:       pw,
-		responseC:  respC,
-		isManifest: isManifest,
-		expected:   desc.Digest,
-		tracker:    p.tracker,
-	}, nil
+	return pushw, nil
 }
 
 func getManifestPath(object string, dgst digest.Digest) []string {
@@ -325,28 +312,81 @@ func getManifestPath(object string, dgst digest.Digest) []string {
 	return []string{"manifests", object}
 }
 
-type response struct {
-	*http.Response
-	err error
-}
-
 type pushWriter struct {
 	base *dockerBase
 	ref  string
 
-	pipe       *io.PipeWriter
-	responseC  <-chan response
+	pipe *io.PipeWriter
+
+	pipeC     chan *io.PipeWriter
+	respC     chan *http.Response
+	closeOnce sync.Once
+	errC      chan error
+
 	isManifest bool
 
 	expected digest.Digest
 	tracker  StatusTracker
 }
 
+func newPushWriter(db *dockerBase, ref string, expected digest.Digest, tracker StatusTracker, isManifest bool) *pushWriter {
+	// Initialize and create response
+	return &pushWriter{
+		base:       db,
+		ref:        ref,
+		expected:   expected,
+		tracker:    tracker,
+		pipeC:      make(chan *io.PipeWriter, 1),
+		respC:      make(chan *http.Response, 1),
+		errC:       make(chan error, 1),
+		isManifest: isManifest,
+	}
+}
+
+func (pw *pushWriter) setPipe(p *io.PipeWriter) {
+	pw.pipeC <- p
+}
+
+func (pw *pushWriter) setError(err error) {
+	pw.errC <- err
+}
+func (pw *pushWriter) setResponse(resp *http.Response) {
+	pw.respC <- resp
+}
+
 func (pw *pushWriter) Write(p []byte) (n int, err error) {
 	status, err := pw.tracker.GetStatus(pw.ref)
 	if err != nil {
 		return n, err
 	}
+
+	if pw.pipe == nil {
+		p, ok := <-pw.pipeC
+		if !ok {
+			return 0, io.ErrClosedPipe
+		}
+		pw.pipe = p
+	} else {
+		select {
+		case p, ok := <-pw.pipeC:
+			if !ok {
+				return 0, io.ErrClosedPipe
+			}
+			pw.pipe.CloseWithError(content.ErrReset)
+			pw.pipe = p
+
+			// If content has already been written, the bytes
+			// cannot be written and the caller must reset
+			if status.Offset > 0 {
+				status.Offset = 0
+				status.UpdatedAt = time.Now()
+				pw.tracker.SetStatus(pw.ref, status)
+				return 0, content.ErrReset
+			}
+		default:
+		}
+	}
+
 	n, err = pw.pipe.Write(p)
 	status.Offset += int64(n)
 	status.UpdatedAt = time.Now()
@@ -355,13 +395,21 @@ func (pw *pushWriter) Write(p []byte) (n int, err error) {
 }
 
 func (pw *pushWriter) Close() error {
-	status, err := pw.tracker.GetStatus(pw.ref)
-	if err == nil && !status.Committed {
-		// Closing an incomplete writer. Record this as an error so that following write can retry it.
-		status.ErrClosed = errors.New("closed incomplete writer")
-		pw.tracker.SetStatus(pw.ref, status)
+	// Ensure pipeC is closed but handle `Close()` being
+	// called multiple times without panicking
+	pw.closeOnce.Do(func() {
+		close(pw.pipeC)
+	})
+	if pw.pipe != nil {
+		status, err := pw.tracker.GetStatus(pw.ref)
+		if err == nil && !status.Committed {
+			// Closing an incomplete writer. Record this as an error so that following write can retry it.
+			status.ErrClosed = errors.New("closed incomplete writer")
+			pw.tracker.SetStatus(pw.ref, status)
+		}
+		return pw.pipe.Close()
 	}
-	return pw.pipe.Close()
+	return nil
 }
 
 func (pw *pushWriter) Status() (content.Status, error) {
@@ -388,18 +436,43 @@ func (pw *pushWriter) Commit(ctx context.Context, size int64, expected digest.Di
 		return err
 	}
 	// TODO: timeout waiting for response
-	resp := <-pw.responseC
-	if resp.err != nil {
-		return resp.err
+	var resp *http.Response
+	select {
+	case err := <-pw.errC:
+		if err != nil {
+			return err
+		}
+	case resp = <-pw.respC:
+		defer resp.Body.Close()
+	case p, ok := <-pw.pipeC:
+		// check whether the pipe has changed in the commit, because sometimes Write
+		// can complete successfully, but the pipe may have changed. In that case, the
+		// content needs to be reset.
+		if !ok {
+			return io.ErrClosedPipe
+		}
+		pw.pipe.CloseWithError(content.ErrReset)
+		pw.pipe = p
+		status, err := pw.tracker.GetStatus(pw.ref)
+		if err != nil {
+			return err
+		}
+		// If content has already been written, the bytes
+		// cannot be written again and the caller must reset
+		if status.Offset > 0 {
+			status.Offset = 0
+			status.UpdatedAt = time.Now()
+			pw.tracker.SetStatus(pw.ref, status)
+			return content.ErrReset
+		}
 	}
-	defer resp.Response.Body.Close()
 
 	// 201 is specified return status, some registries return
 	// 200, 202 or 204.
 	switch resp.StatusCode {
 	case http.StatusOK, http.StatusCreated, http.StatusNoContent, http.StatusAccepted:
 	default:
-		return remoteserrors.NewUnexpectedStatusErr(resp.Response)
+		return remoteserrors.NewUnexpectedStatusErr(resp)
 	}
 
 	status, err := pw.tracker.GetStatus(pw.ref)

vendor/github.com/containerd/containerd/remotes/docker/resolver.go

@@ -21,6 +21,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"net/url"
 	"path"
@@ -667,3 +668,17 @@ func responseFields(resp *http.Response) logrus.Fields {
 
 	return logrus.Fields(fields)
 }
+
+// IsLocalhost checks if the registry host is local.
+func IsLocalhost(host string) bool {
+	if h, _, err := net.SplitHostPort(host); err == nil {
+		host = h
+	}
+
+	if host == "localhost" {
+		return true
+	}
+
+	ip := net.ParseIP(host)
+	return ip.IsLoopback()
+}

vendor/github.com/containerd/containerd/remotes/handlers.go

@@ -257,8 +257,8 @@ func PushContent(ctx context.Context, pusher Pusher, desc ocispec.Descriptor, st
 // An example of this kind of content would be a Windows base layer, which is not supposed to be redistributed.
 //
 // This is based on the media type of the content:
-// 	- application/vnd.oci.image.layer.nondistributable
-// 	- application/vnd.docker.image.rootfs.foreign
+//   - application/vnd.oci.image.layer.nondistributable
+//   - application/vnd.docker.image.rootfs.foreign
 func SkipNonDistributableBlobs(f images.HandlerFunc) images.HandlerFunc {
 	return func(ctx context.Context, desc ocispec.Descriptor) ([]ocispec.Descriptor, error) {
 		if images.IsNonDistributable(desc.MediaType) {

vendor/github.com/containerd/containerd/runtime/v2/shim/shim.go

@@ -105,6 +105,12 @@ type ttrpcService interface {
 	RegisterTTRPC(*ttrpc.Server) error
 }
 
+type ttrpcServerOptioner interface {
+	ttrpcService
+
+	UnaryInterceptor() ttrpc.UnaryServerInterceptor
+}
+
 type taskService struct {
 	shimapi.TaskService
 }
@@ -366,6 +372,8 @@ func run(ctx context.Context, manager Manager, initFunc Init, name string, confi
 	var (
 		initialized   = plugin.NewPluginSet()
 		ttrpcServices = []ttrpcService{}
+
+		ttrpcUnaryInterceptors = []ttrpc.UnaryServerInterceptor{}
 	)
 	plugins := plugin.Graph(func(*plugin.Registration) bool { return false })
 	for _, p := range plugins {
@@ -405,20 +413,29 @@ func run(ctx context.Context, manager Manager, initFunc Init, name string, confi
 		if err != nil {
 			if plugin.IsSkipPlugin(err) {
 				log.G(ctx).WithError(err).WithField("type", p.Type).Infof("skip loading plugin %q...", id)
-			} else {
-				log.G(ctx).WithError(err).Warnf("failed to load plugin %s", id)
+				continue
 			}
-			continue
+			return fmt.Errorf("failed to load plugin %s: %w", id, err)
 		}
 
 		if src, ok := instance.(ttrpcService); ok {
 			logrus.WithField("id", id).Debug("registering ttrpc service")
 			ttrpcServices = append(ttrpcServices, src)
+
+		}
+
+		if src, ok := instance.(ttrpcServerOptioner); ok {
+			ttrpcUnaryInterceptors = append(ttrpcUnaryInterceptors, src.UnaryInterceptor())
 		}
 	}
 
-	server, err := newServer()
-	if err != nil { //nolint:staticcheck // Ignore SA4023 as some platforms always return error
+	if len(ttrpcServices) == 0 {
+		return fmt.Errorf("required that ttrpc service")
+	}
+
+	unaryInterceptor := chainUnaryServerInterceptors(ttrpcUnaryInterceptors...)
+	server, err := newServer(ttrpc.WithUnaryServerInterceptor(unaryInterceptor))
+	if err != nil {
 		return fmt.Errorf("failed creating server: %w", err)
 	}
 

vendor/github.com/containerd/containerd/runtime/v2/shim/shim_darwin.go

@@ -18,8 +18,8 @@ package shim
 
 import "github.com/containerd/ttrpc"
 
-func newServer() (*ttrpc.Server, error) {
-	return ttrpc.NewServer()
+func newServer(opts ...ttrpc.ServerOpt) (*ttrpc.Server, error) {
+	return ttrpc.NewServer(opts...)
 }
 
 func subreaper() error {

vendor/github.com/containerd/containerd/runtime/v2/shim/shim_freebsd.go

@@ -18,8 +18,8 @@ package shim
 
 import "github.com/containerd/ttrpc"
 
-func newServer() (*ttrpc.Server, error) {
-	return ttrpc.NewServer()
+func newServer(opts ...ttrpc.ServerOpt) (*ttrpc.Server, error) {
+	return ttrpc.NewServer(opts...)
 }
 
 func subreaper() error {

vendor/github.com/containerd/containerd/runtime/v2/shim/shim_linux.go

@@ -21,8 +21,9 @@ import (
 	"github.com/containerd/ttrpc"
 )
 
-func newServer() (*ttrpc.Server, error) {
-	return ttrpc.NewServer(ttrpc.WithServerHandshaker(ttrpc.UnixSocketRequireSameUser()))
+func newServer(opts ...ttrpc.ServerOpt) (*ttrpc.Server, error) {
+	opts = append(opts, ttrpc.WithServerHandshaker(ttrpc.UnixSocketRequireSameUser()))
+	return ttrpc.NewServer(opts...)
 }
 
 func subreaper() error {

vendor/github.com/containerd/containerd/runtime/v2/shim/shim_windows.go

@@ -31,7 +31,7 @@ func setupSignals(config Config) (chan os.Signal, error) {
 	return nil, errors.New("not supported")
 }
 
-func newServer() (*ttrpc.Server, error) {
+func newServer(opts ...ttrpc.ServerOpt) (*ttrpc.Server, error) {
 	return nil, errors.New("not supported")
 }
 

vendor/github.com/containerd/containerd/runtime/v2/shim/util.go

@@ -28,6 +28,7 @@ import (
 	"time"
 
 	"github.com/containerd/containerd/namespaces"
+	"github.com/containerd/ttrpc"
 	"github.com/gogo/protobuf/proto"
 	"github.com/gogo/protobuf/types"
 	exec "golang.org/x/sys/execabs"
@@ -167,3 +168,28 @@ func ReadAddress(path string) (string, error) {
 	}
 	return string(data), nil
 }
+
+// chainUnaryServerInterceptors creates a single ttrpc server interceptor from
+// a chain of many interceptors executed from first to last.
+func chainUnaryServerInterceptors(interceptors ...ttrpc.UnaryServerInterceptor) ttrpc.UnaryServerInterceptor {
+	n := len(interceptors)
+
+	// force to use default interceptor in ttrpc
+	if n == 0 {
+		return nil
+	}
+
+	return func(ctx context.Context, unmarshal ttrpc.Unmarshaler, info *ttrpc.UnaryServerInfo, method ttrpc.Method) (interface{}, error) {
+		currentMethod := method
+
+		for i := n - 1; i > 0; i-- {
+			interceptor := interceptors[i]
+			innerMethod := currentMethod
+
+			currentMethod = func(currentCtx context.Context, currentUnmarshal func(interface{}) error) (interface{}, error) {
+				return interceptor(currentCtx, currentUnmarshal, info, innerMethod)
+			}
+		}
+		return interceptors[0](ctx, unmarshal, info, currentMethod)
+	}
+}

vendor/github.com/containerd/containerd/snapshots/snapshotter.go

@@ -153,10 +153,10 @@ type WalkFunc func(context.Context, Info) error
 // For consistency, we define the following terms to be used throughout this
 // interface for snapshotter implementations:
 //
-// 	`ctx` - refers to a context.Context
-// 	`key` - refers to an active snapshot
-// 	`name` - refers to a committed snapshot
-// 	`parent` - refers to the parent in relation
+//	`ctx` - refers to a context.Context
+//	`key` - refers to an active snapshot
+//	`name` - refers to a committed snapshot
+//	`parent` - refers to the parent in relation
 //
 // Most methods take various combinations of these identifiers. Typically,
 // `name` and `parent` will be used in cases where a method *only* takes
@@ -168,7 +168,7 @@ type WalkFunc func(context.Context, Info) error
 // We cover several examples below to demonstrate the utility of a snapshot
 // snapshotter.
 //
-// Importing a Layer
+// # Importing a Layer
 //
 // To import a layer, we simply have the Snapshotter provide a list of
 // mounts to be applied such that our dst will capture a changeset. We start
@@ -185,7 +185,7 @@ type WalkFunc func(context.Context, Info) error
 //		"containerd.io/gc.root": time.Now().UTC().Format(time.RFC3339),
 //	})
 //	mounts, err := snapshotter.Prepare(ctx, key, "", noGcOpt)
-// 	if err != nil { ... }
+//	if err != nil { ... }
 //
 // We get back a list of mounts from Snapshotter.Prepare, with the key identifying
 // the active snapshot. Mount this to the temporary location with the
@@ -202,8 +202,8 @@ type WalkFunc func(context.Context, Info) error
 //
 //	layer, err := os.Open(layerPath)
 //	if err != nil { ... }
-// 	digest, err := unpackLayer(tmpLocation, layer) // unpack into layer location
-// 	if err != nil { ... }
+//	digest, err := unpackLayer(tmpLocation, layer) // unpack into layer location
+//	if err != nil { ... }
 //
 // When the above completes, we should have a filesystem the represents the
 // contents of the layer. Careful implementations should verify that digest
@@ -221,30 +221,30 @@ type WalkFunc func(context.Context, Info) error
 // Now, we have a layer in the Snapshotter that can be accessed with the digest
 // provided during commit.
 //
-// Importing the Next Layer
+// # Importing the Next Layer
 //
 // Making a layer depend on the above is identical to the process described
 // above except that the parent is provided as parent when calling
 // Manager.Prepare, assuming a clean, unique key identifier:
 //
-// 	mounts, err := snapshotter.Prepare(ctx, key, parentDigest, noGcOpt)
+//	mounts, err := snapshotter.Prepare(ctx, key, parentDigest, noGcOpt)
 //
 // We then mount, apply and commit, as we did above. The new snapshot will be
 // based on the content of the previous one.
 //
-// Running a Container
+// # Running a Container
 //
 // To run a container, we simply provide Snapshotter.Prepare the committed image
 // snapshot as the parent. After mounting, the prepared path can
 // be used directly as the container's filesystem:
 //
-// 	mounts, err := snapshotter.Prepare(ctx, containerKey, imageRootFSChainID)
+//	mounts, err := snapshotter.Prepare(ctx, containerKey, imageRootFSChainID)
 //
 // The returned mounts can then be passed directly to the container runtime. If
 // one would like to create a new image from the filesystem, Manager.Commit is
 // called:
 //
-// 	if err := snapshotter.Commit(ctx, newImageSnapshot, containerKey); err != nil { ... }
+//	if err := snapshotter.Commit(ctx, newImageSnapshot, containerKey); err != nil { ... }
 //
 // Alternatively, for most container runs, Snapshotter.Remove will be called to
 // signal the Snapshotter to abandon the changes.

vendor/github.com/containerd/containerd/version/version.go

@@ -23,7 +23,7 @@ var (
 	Package = "github.com/containerd/containerd"
 
 	// Version holds the complete version number. Filled in at linking time.
-	Version = "1.6.8+unknown"
+	Version = "1.6.9+unknown"
 
 	// Revision is filled with the VCS (e.g. git) revision being used to build
 	// the program at linking time.

vendor/google.golang.org/genproto/googleapis/api/annotations/resource.pb.go

@@ -163,11 +163,7 @@ func (ResourceDescriptor_Style) EnumDescriptor() ([]byte, []int) {
 //       // For Kubernetes resources, the format is {api group}/{kind}.
 //       option (google.api.resource) = {
 //         type: "pubsub.googleapis.com/Topic"
-//         name_descriptor: {
-//           pattern: "projects/{project}/topics/{topic}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
-//         }
+//         pattern: "projects/{project}/topics/{topic}"
 //       };
 //     }
 //
@@ -175,10 +171,7 @@ func (ResourceDescriptor_Style) EnumDescriptor() ([]byte, []int) {
 //
 //     resources:
 //     - type: "pubsub.googleapis.com/Topic"
-//       name_descriptor:
-//         - pattern: "projects/{project}/topics/{topic}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
+//       pattern: "projects/{project}/topics/{topic}"
 //
 // Sometimes, resources have multiple patterns, typically because they can
 // live under multiple parents.
@@ -188,26 +181,10 @@ func (ResourceDescriptor_Style) EnumDescriptor() ([]byte, []int) {
 //     message LogEntry {
 //       option (google.api.resource) = {
 //         type: "logging.googleapis.com/LogEntry"
-//         name_descriptor: {
-//           pattern: "projects/{project}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
-//         }
-//         name_descriptor: {
-//           pattern: "folders/{folder}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
-//           parent_name_extractor: "folders/{folder}"
-//         }
-//         name_descriptor: {
-//           pattern: "organizations/{organization}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Organization"
-//           parent_name_extractor: "organizations/{organization}"
-//         }
-//         name_descriptor: {
-//           pattern: "billingAccounts/{billing_account}/logs/{log}"
-//           parent_type: "billing.googleapis.com/BillingAccount"
-//           parent_name_extractor: "billingAccounts/{billing_account}"
-//         }
+//         pattern: "projects/{project}/logs/{log}"
+//         pattern: "folders/{folder}/logs/{log}"
+//         pattern: "organizations/{organization}/logs/{log}"
+//         pattern: "billingAccounts/{billing_account}/logs/{log}"
 //       };
 //     }
 //
@@ -215,48 +192,10 @@ func (ResourceDescriptor_Style) EnumDescriptor() ([]byte, []int) {
 //
 //     resources:
 //     - type: 'logging.googleapis.com/LogEntry'
-//       name_descriptor:
-//         - pattern: "projects/{project}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
-//         - pattern: "folders/{folder}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
-//           parent_name_extractor: "folders/{folder}"
-//         - pattern: "organizations/{organization}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Organization"
-//           parent_name_extractor: "organizations/{organization}"
-//         - pattern: "billingAccounts/{billing_account}/logs/{log}"
-//           parent_type: "billing.googleapis.com/BillingAccount"
-//           parent_name_extractor: "billingAccounts/{billing_account}"
-//
-// For flexible resources, the resource name doesn't contain parent names, but
-// the resource itself has parents for policy evaluation.
-//
-// Example:
-//
-//     message Shelf {
-//       option (google.api.resource) = {
-//         type: "library.googleapis.com/Shelf"
-//         name_descriptor: {
-//           pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//         }
-//         name_descriptor: {
-//           pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
-//         }
-//       };
-//     }
-//
-// The ResourceDescriptor Yaml config will look like:
-//
-//     resources:
-//     - type: 'library.googleapis.com/Shelf'
-//       name_descriptor:
-//         - pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//         - pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
+//       pattern: "projects/{project}/logs/{log}"
+//       pattern: "folders/{folder}/logs/{log}"
+//       pattern: "organizations/{organization}/logs/{log}"
+//       pattern: "billingAccounts/{billing_account}/logs/{log}"
 type ResourceDescriptor struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache

vendor/google.golang.org/genproto/googleapis/logging/type/http_request.pb.go

@@ -1,4 +1,4 @@
-// Copyright 2020 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -24,7 +24,6 @@ import (
 	reflect "reflect"
 	sync "sync"
 
-	_ "google.golang.org/genproto/googleapis/api/annotations"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	durationpb "google.golang.org/protobuf/types/known/durationpb"
@@ -240,57 +239,55 @@ var file_google_logging_type_http_request_proto_rawDesc = []byte{
 	0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x13, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65,
 	0x2e, 0x6c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67, 0x2e, 0x74, 0x79, 0x70, 0x65, 0x1a, 0x1e, 0x67,
 	0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x64,
-	0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1c, 0x67,
-	0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61,
-	0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xaf, 0x04, 0x0a, 0x0b,
-	0x48, 0x74, 0x74, 0x70, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x25, 0x0a, 0x0e, 0x72,
-	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x5f, 0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x18, 0x01, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x0d, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x4d, 0x65, 0x74, 0x68,
-	0x6f, 0x64, 0x12, 0x1f, 0x0a, 0x0b, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x5f, 0x75, 0x72,
-	0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
-	0x55, 0x72, 0x6c, 0x12, 0x21, 0x0a, 0x0c, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x5f, 0x73,
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 }
 
 var (

vendor/google.golang.org/genproto/googleapis/logging/type/log_severity.pb.go

@@ -1,4 +1,4 @@
-// Copyright 2020 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -24,7 +24,6 @@ import (
 	reflect "reflect"
 	sync "sync"
 
-	_ "google.golang.org/genproto/googleapis/api/annotations"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 )
@@ -134,30 +133,29 @@ var file_google_logging_type_log_severity_proto_rawDesc = []byte{
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+	0x6f, 0x33,
 }
 
 var (

vendor/google.golang.org/genproto/googleapis/logging/v2/log_entry.pb.go

@@ -1,4 +1,4 @@
-// Copyright 2020 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -27,7 +27,6 @@ import (
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	monitoredres "google.golang.org/genproto/googleapis/api/monitoredres"
 	_type "google.golang.org/genproto/googleapis/logging/type"
-	_ "google.golang.org/genproto/googleapis/rpc/status"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	anypb "google.golang.org/protobuf/types/known/anypb"
@@ -43,8 +42,6 @@ const (
 )
 
 // An individual entry in a log.
-//
-//
 type LogEntry struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -63,12 +60,13 @@ type LogEntry struct {
 	//
 	// `[LOG_ID]` must be URL-encoded within `log_name`. Example:
 	// `"organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"`.
+	//
 	// `[LOG_ID]` must be less than 512 characters long and can only include the
 	// following characters: upper and lower case alphanumeric characters,
 	// forward-slash, underscore, hyphen, and period.
 	//
 	// For backward compatibility, if `log_name` begins with a forward-slash, such
-	// as `/projects/...`, then the log entry is ingested as usual but the
+	// as `/projects/...`, then the log entry is ingested as usual, but the
 	// forward-slash is removed. Listing the log entry will not show the leading
 	// slash and filtering for a log name with a leading slash will never return
 	// any results.
@@ -109,7 +107,7 @@ type LogEntry struct {
 	// de-duplication in the export of logs.
 	//
 	// If the `insert_id` is omitted when writing a log entry, the Logging API
-	//  assigns its own unique identifier in this field.
+	// assigns its own unique identifier in this field.
 	//
 	// In queries, the `insert_id` is also used to order log entries that have
 	// the same `log_name` and `timestamp` values.
@@ -117,8 +115,20 @@ type LogEntry struct {
 	// Optional. Information about the HTTP request associated with this log entry, if
 	// applicable.
 	HttpRequest *_type.HttpRequest `protobuf:"bytes,7,opt,name=http_request,json=httpRequest,proto3" json:"http_request,omitempty"`
-	// Optional. A set of user-defined (key, value) data that provides additional
-	// information about the log entry.
+	// Optional. A map of key, value pairs that provides additional information about the
+	// log entry. The labels can be user-defined or system-defined.
+	//
+	// User-defined labels are arbitrary key, value pairs that you can use to
+	// classify logs.
+	//
+	// System-defined labels are defined by GCP services for platform logs.
+	// They have two components - a service namespace component and the
+	// attribute name. For example: `compute.googleapis.com/resource_name`.
+	//
+	// Cloud Logging truncates label keys that exceed 512 B and label
+	// values that exceed 64 KB upon their associated log entry being
+	// written. The truncation is indicated by an ellipsis at the
+	// end of the character string.
 	Labels map[string]string `protobuf:"bytes,11,rep,name=labels,proto3" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Optional. Information about an operation associated with the log entry, if
 	// applicable.
@@ -144,6 +154,9 @@ type LogEntry struct {
 	TraceSampled bool `protobuf:"varint,30,opt,name=trace_sampled,json=traceSampled,proto3" json:"trace_sampled,omitempty"`
 	// Optional. Source code location information associated with the log entry, if any.
 	SourceLocation *LogEntrySourceLocation `protobuf:"bytes,23,opt,name=source_location,json=sourceLocation,proto3" json:"source_location,omitempty"`
+	// Optional. Information indicating this LogEntry is part of a sequence of multiple log
+	// entries split from a single LogEntry.
+	Split *LogSplit `protobuf:"bytes,35,opt,name=split,proto3" json:"split,omitempty"`
 }
 
 func (x *LogEntry) Reset() {
@@ -297,6 +310,13 @@ func (x *LogEntry) GetSourceLocation() *LogEntrySourceLocation {
 	return nil
 }
 
+func (x *LogEntry) GetSplit() *LogSplit {
+	if x != nil {
+		return x.Split
+	}
+	return nil
+}
+
 type isLogEntry_Payload interface {
 	isLogEntry_Payload()
 }
@@ -485,6 +505,79 @@ func (x *LogEntrySourceLocation) GetFunction() string {
 	return ""
 }
 
+// Additional information used to correlate multiple log entries. Used when a
+// single LogEntry would exceed the Google Cloud Logging size limit and is
+// split across multiple log entries.
+type LogSplit struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A globally unique identifier for all log entries in a sequence of split log
+	// entries. All log entries with the same |LogSplit.uid| are assumed to be
+	// part of the same sequence of split log entries.
+	Uid string `protobuf:"bytes,1,opt,name=uid,proto3" json:"uid,omitempty"`
+	// The index of this LogEntry in the sequence of split log entries. Log
+	// entries are given |index| values 0, 1, ..., n-1 for a sequence of n log
+	// entries.
+	Index int32 `protobuf:"varint,2,opt,name=index,proto3" json:"index,omitempty"`
+	// The total number of log entries that the original LogEntry was split into.
+	TotalSplits int32 `protobuf:"varint,3,opt,name=total_splits,json=totalSplits,proto3" json:"total_splits,omitempty"`
+}
+
+func (x *LogSplit) Reset() {
+	*x = LogSplit{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_logging_v2_log_entry_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LogSplit) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LogSplit) ProtoMessage() {}
+
+func (x *LogSplit) ProtoReflect() protoreflect.Message {
+	mi := &file_google_logging_v2_log_entry_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LogSplit.ProtoReflect.Descriptor instead.
+func (*LogSplit) Descriptor() ([]byte, []int) {
+	return file_google_logging_v2_log_entry_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *LogSplit) GetUid() string {
+	if x != nil {
+		return x.Uid
+	}
+	return ""
+}
+
+func (x *LogSplit) GetIndex() int32 {
+	if x != nil {
+		return x.Index
+	}
+	return 0
+}
+
+func (x *LogSplit) GetTotalSplits() int32 {
+	if x != nil {
+		return x.TotalSplits
+	}
+	return 0
+}
+
 var File_google_logging_v2_log_entry_proto protoreflect.FileDescriptor
 
 var file_google_logging_v2_log_entry_proto_rawDesc = []byte{
@@ -508,110 +601,116 @@ var file_google_logging_v2_log_entry_proto_rawDesc = []byte{
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-	0x69, 0x6e, 0x67, 0xf8, 0x01, 0x01, 0xaa, 0x02, 0x17, 0x47, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e,
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-	0x4c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67, 0x5c, 0x56, 0x32, 0xea, 0x02, 0x1a, 0x47, 0x6f, 0x6f,
-	0x67, 0x6c, 0x65, 0x3a, 0x3a, 0x43, 0x6c, 0x6f, 0x75, 0x64, 0x3a, 0x3a, 0x4c, 0x6f, 0x67, 0x67,
-	0x69, 0x6e, 0x67, 0x3a, 0x3a, 0x56, 0x32, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x42, 0x0d, 0x4c, 0x6f, 0x67, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50,
+	0x01, 0x5a, 0x38, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67,
+	0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x67, 0x65, 0x6e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f,
+	0x6f, 0x67, 0x6c, 0x65, 0x61, 0x70, 0x69, 0x73, 0x2f, 0x6c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67,
+	0x2f, 0x76, 0x32, 0x3b, 0x6c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67, 0xf8, 0x01, 0x01, 0xaa, 0x02,
+	0x17, 0x47, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x43, 0x6c, 0x6f, 0x75, 0x64, 0x2e, 0x4c, 0x6f,
+	0x67, 0x67, 0x69, 0x6e, 0x67, 0x2e, 0x56, 0x32, 0xca, 0x02, 0x17, 0x47, 0x6f, 0x6f, 0x67, 0x6c,
+	0x65, 0x5c, 0x43, 0x6c, 0x6f, 0x75, 0x64, 0x5c, 0x4c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67, 0x5c,
+	0x56, 0x32, 0xea, 0x02, 0x1a, 0x47, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x3a, 0x3a, 0x43, 0x6c, 0x6f,
+	0x75, 0x64, 0x3a, 0x3a, 0x4c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67, 0x3a, 0x3a, 0x56, 0x32, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -626,35 +725,37 @@ func file_google_logging_v2_log_entry_proto_rawDescGZIP() []byte {
 	return file_google_logging_v2_log_entry_proto_rawDescData
 }
 
-var file_google_logging_v2_log_entry_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_google_logging_v2_log_entry_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_google_logging_v2_log_entry_proto_goTypes = []interface{}{
 	(*LogEntry)(nil),                       // 0: google.logging.v2.LogEntry
 	(*LogEntryOperation)(nil),              // 1: google.logging.v2.LogEntryOperation
 	(*LogEntrySourceLocation)(nil),         // 2: google.logging.v2.LogEntrySourceLocation
-	nil,                                    // 3: google.logging.v2.LogEntry.LabelsEntry
-	(*monitoredres.MonitoredResource)(nil), // 4: google.api.MonitoredResource
-	(*anypb.Any)(nil),                      // 5: google.protobuf.Any
-	(*structpb.Struct)(nil),                // 6: google.protobuf.Struct
-	(*timestamppb.Timestamp)(nil),          // 7: google.protobuf.Timestamp
-	(_type.LogSeverity)(0),                 // 8: google.logging.type.LogSeverity
-	(*_type.HttpRequest)(nil),              // 9: google.logging.type.HttpRequest
+	(*LogSplit)(nil),                       // 3: google.logging.v2.LogSplit
+	nil,                                    // 4: google.logging.v2.LogEntry.LabelsEntry
+	(*monitoredres.MonitoredResource)(nil), // 5: google.api.MonitoredResource
+	(*anypb.Any)(nil),                      // 6: google.protobuf.Any
+	(*structpb.Struct)(nil),                // 7: google.protobuf.Struct
+	(*timestamppb.Timestamp)(nil),          // 8: google.protobuf.Timestamp
+	(_type.LogSeverity)(0),                 // 9: google.logging.type.LogSeverity
+	(*_type.HttpRequest)(nil),              // 10: google.logging.type.HttpRequest
 }
 var file_google_logging_v2_log_entry_proto_depIdxs = []int32{
-	4,  // 0: google.logging.v2.LogEntry.resource:type_name -> google.api.MonitoredResource
-	5,  // 1: google.logging.v2.LogEntry.proto_payload:type_name -> google.protobuf.Any
-	6,  // 2: google.logging.v2.LogEntry.json_payload:type_name -> google.protobuf.Struct
-	7,  // 3: google.logging.v2.LogEntry.timestamp:type_name -> google.protobuf.Timestamp
-	7,  // 4: google.logging.v2.LogEntry.receive_timestamp:type_name -> google.protobuf.Timestamp
-	8,  // 5: google.logging.v2.LogEntry.severity:type_name -> google.logging.type.LogSeverity
-	9,  // 6: google.logging.v2.LogEntry.http_request:type_name -> google.logging.type.HttpRequest
-	3,  // 7: google.logging.v2.LogEntry.labels:type_name -> google.logging.v2.LogEntry.LabelsEntry
+	5,  // 0: google.logging.v2.LogEntry.resource:type_name -> google.api.MonitoredResource
+	6,  // 1: google.logging.v2.LogEntry.proto_payload:type_name -> google.protobuf.Any
+	7,  // 2: google.logging.v2.LogEntry.json_payload:type_name -> google.protobuf.Struct
+	8,  // 3: google.logging.v2.LogEntry.timestamp:type_name -> google.protobuf.Timestamp
+	8,  // 4: google.logging.v2.LogEntry.receive_timestamp:type_name -> google.protobuf.Timestamp
+	9,  // 5: google.logging.v2.LogEntry.severity:type_name -> google.logging.type.LogSeverity
+	10, // 6: google.logging.v2.LogEntry.http_request:type_name -> google.logging.type.HttpRequest
+	4,  // 7: google.logging.v2.LogEntry.labels:type_name -> google.logging.v2.LogEntry.LabelsEntry
 	1,  // 8: google.logging.v2.LogEntry.operation:type_name -> google.logging.v2.LogEntryOperation
 	2,  // 9: google.logging.v2.LogEntry.source_location:type_name -> google.logging.v2.LogEntrySourceLocation
-	10, // [10:10] is the sub-list for method output_type
-	10, // [10:10] is the sub-list for method input_type
-	10, // [10:10] is the sub-list for extension type_name
-	10, // [10:10] is the sub-list for extension extendee
-	0,  // [0:10] is the sub-list for field type_name
+	3,  // 10: google.logging.v2.LogEntry.split:type_name -> google.logging.v2.LogSplit
+	11, // [11:11] is the sub-list for method output_type
+	11, // [11:11] is the sub-list for method input_type
+	11, // [11:11] is the sub-list for extension type_name
+	11, // [11:11] is the sub-list for extension extendee
+	0,  // [0:11] is the sub-list for field type_name
 }
 
 func init() { file_google_logging_v2_log_entry_proto_init() }
@@ -699,6 +800,18 @@ func file_google_logging_v2_log_entry_proto_init() {
 				return nil
 			}
 		}
+		file_google_logging_v2_log_entry_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LogSplit); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_google_logging_v2_log_entry_proto_msgTypes[0].OneofWrappers = []interface{}{
 		(*LogEntry_ProtoPayload)(nil),
@@ -711,7 +824,7 @@ func file_google_logging_v2_log_entry_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_google_logging_v2_log_entry_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   4,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

vendor/google.golang.org/genproto/googleapis/logging/v2/logging.pb.go

@@ -1,4 +1,4 @@
-// Copyright 2020 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -35,8 +35,6 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	durationpb "google.golang.org/protobuf/types/known/durationpb"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
-	_ "google.golang.org/protobuf/types/known/fieldmaskpb"
-	_ "google.golang.org/protobuf/types/known/timestamppb"
 )
 
 const (
@@ -111,14 +109,15 @@ type DeleteLogRequest struct {
 
 	// Required. The resource name of the log to delete:
 	//
-	//     "projects/[PROJECT_ID]/logs/[LOG_ID]"
-	//     "organizations/[ORGANIZATION_ID]/logs/[LOG_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]"
-	//     "folders/[FOLDER_ID]/logs/[LOG_ID]"
+	// * `projects/[PROJECT_ID]/logs/[LOG_ID]`
+	// * `organizations/[ORGANIZATION_ID]/logs/[LOG_ID]`
+	// * `billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]`
+	// * `folders/[FOLDER_ID]/logs/[LOG_ID]`
 	//
 	// `[LOG_ID]` must be URL-encoded. For example,
 	// `"projects/my-project-id/logs/syslog"`,
-	// `"organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"`.
+	// `"organizations/123/logs/cloudaudit.googleapis.com%2Factivity"`.
+	//
 	// For more information about log names, see
 	// [LogEntry][google.logging.v2.LogEntry].
 	LogName string `protobuf:"bytes,1,opt,name=log_name,json=logName,proto3" json:"log_name,omitempty"`
@@ -172,15 +171,15 @@ type WriteLogEntriesRequest struct {
 	// Optional. A default log resource name that is assigned to all log entries
 	// in `entries` that do not specify a value for `log_name`:
 	//
-	//     "projects/[PROJECT_ID]/logs/[LOG_ID]"
-	//     "organizations/[ORGANIZATION_ID]/logs/[LOG_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]"
-	//     "folders/[FOLDER_ID]/logs/[LOG_ID]"
+	// * `projects/[PROJECT_ID]/logs/[LOG_ID]`
+	// * `organizations/[ORGANIZATION_ID]/logs/[LOG_ID]`
+	// * `billingAccounts/[BILLING_ACCOUNT_ID]/logs/[LOG_ID]`
+	// * `folders/[FOLDER_ID]/logs/[LOG_ID]`
 	//
 	// `[LOG_ID]` must be URL-encoded. For example:
 	//
 	//     "projects/my-project-id/logs/syslog"
-	//     "organizations/1234567890/logs/cloudresourcemanager.googleapis.com%2Factivity"
+	//     "organizations/123/logs/cloudaudit.googleapis.com%2Factivity"
 	//
 	// The permission `logging.logEntries.create` is needed on each project,
 	// organization, billing account, or folder that is receiving new log
@@ -215,14 +214,14 @@ type WriteLogEntriesRequest struct {
 	// the entries later in the list. See the `entries.list` method.
 	//
 	// Log entries with timestamps that are more than the
-	// [logs retention period](https://cloud.google.com/logging/quota-policy) in
+	// [logs retention period](https://cloud.google.com/logging/quotas) in
 	// the past or more than 24 hours in the future will not be available when
 	// calling `entries.list`. However, those log entries can still be [exported
 	// with
 	// LogSinks](https://cloud.google.com/logging/docs/api/tasks/exporting-logs).
 	//
 	// To improve throughput and to avoid exceeding the
-	// [quota limit](https://cloud.google.com/logging/quota-policy) for calls to
+	// [quota limit](https://cloud.google.com/logging/quotas) for calls to
 	// `entries.write`, you should try to include several log entries in this
 	// list, rather than calling this method for each individual log entry.
 	Entries []*LogEntry `protobuf:"bytes,4,rep,name=entries,proto3" json:"entries,omitempty"`
@@ -414,16 +413,17 @@ type ListLogEntriesRequest struct {
 	// Required. Names of one or more parent resources from which to
 	// retrieve log entries:
 	//
-	//     "projects/[PROJECT_ID]"
-	//     "organizations/[ORGANIZATION_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]"
-	//     "folders/[FOLDER_ID]"
+	// *  `projects/[PROJECT_ID]`
+	// *  `organizations/[ORGANIZATION_ID]`
+	// *  `billingAccounts/[BILLING_ACCOUNT_ID]`
+	// *  `folders/[FOLDER_ID]`
+	//
+	// May alternatively be one or more views:
 	//
-	// May alternatively be one or more views
-	//   projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
-	//   organization/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
-	//   billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
-	//   folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
+	//  * `projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `organizations/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
 	//
 	// Projects listed in the `project_ids` field are added to this list.
 	ResourceNames []string `protobuf:"bytes,8,rep,name=resource_names,json=resourceNames,proto3" json:"resource_names,omitempty"`
@@ -442,10 +442,10 @@ type ListLogEntriesRequest struct {
 	// in order of decreasing timestamps (newest first).  Entries with equal
 	// timestamps are returned in order of their `insert_id` values.
 	OrderBy string `protobuf:"bytes,3,opt,name=order_by,json=orderBy,proto3" json:"order_by,omitempty"`
-	// Optional. The maximum number of results to return from this request.
-	// Default is 50. If the value is negative or exceeds 1000,
-	// the request is rejected. The presence of `next_page_token` in the
-	// response indicates that more results might be available.
+	// Optional. The maximum number of results to return from this request. Default is 50.
+	// If the value is negative or exceeds 1000, the request is rejected. The
+	// presence of `next_page_token` in the response indicates that more results
+	// might be available.
 	PageSize int32 `protobuf:"varint,4,opt,name=page_size,json=pageSize,proto3" json:"page_size,omitempty"`
 	// Optional. If present, then retrieve the next batch of results from the
 	// preceding call to this method.  `page_token` must be the value of
@@ -721,10 +721,10 @@ type ListLogsRequest struct {
 
 	// Required. The resource name that owns the logs:
 	//
-	//     "projects/[PROJECT_ID]"
-	//     "organizations/[ORGANIZATION_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]"
-	//     "folders/[FOLDER_ID]"
+	// *  `projects/[PROJECT_ID]`
+	// *  `organizations/[ORGANIZATION_ID]`
+	// *  `billingAccounts/[BILLING_ACCOUNT_ID]`
+	// *  `folders/[FOLDER_ID]`
 	Parent string `protobuf:"bytes,1,opt,name=parent,proto3" json:"parent,omitempty"`
 	// Optional. The maximum number of results to return from this request.
 	// Non-positive values are ignored.  The presence of `nextPageToken` in the
@@ -736,16 +736,18 @@ type ListLogsRequest struct {
 	// parameters should be identical to those in the previous call.
 	PageToken string `protobuf:"bytes,3,opt,name=page_token,json=pageToken,proto3" json:"page_token,omitempty"`
 	// Optional. The resource name that owns the logs:
-	//   projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
-	//   organization/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
-	//   billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
-	//   folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]
+	//
+	//  * `projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `organizations/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
 	//
 	// To support legacy queries, it could also be:
-	//     "projects/[PROJECT_ID]"
-	//     "organizations/[ORGANIZATION_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]"
-	//     "folders/[FOLDER_ID]"
+	//
+	// *  `projects/[PROJECT_ID]`
+	// *  `organizations/[ORGANIZATION_ID]`
+	// *  `billingAccounts/[BILLING_ACCOUNT_ID]`
+	// *  `folders/[FOLDER_ID]`
 	ResourceNames []string `protobuf:"bytes,8,rep,name=resource_names,json=resourceNames,proto3" json:"resource_names,omitempty"`
 }
 
@@ -879,16 +881,17 @@ type TailLogEntriesRequest struct {
 
 	// Required. Name of a parent resource from which to retrieve log entries:
 	//
-	//     "projects/[PROJECT_ID]"
-	//     "organizations/[ORGANIZATION_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]"
-	//     "folders/[FOLDER_ID]"
+	// *  `projects/[PROJECT_ID]`
+	// *  `organizations/[ORGANIZATION_ID]`
+	// *  `billingAccounts/[BILLING_ACCOUNT_ID]`
+	// *  `folders/[FOLDER_ID]`
 	//
 	// May alternatively be one or more views:
-	//     "projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]"
-	//     "organization/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]"
-	//     "billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]"
-	//     "folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]"
+	//
+	//  * `projects/[PROJECT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `organizations/[ORGANIZATION_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `billingAccounts/[BILLING_ACCOUNT_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
+	//  * `folders/[FOLDER_ID]/locations/[LOCATION_ID]/buckets/[BUCKET_ID]/views/[VIEW_ID]`
 	ResourceNames []string `protobuf:"bytes,1,rep,name=resource_names,json=resourceNames,proto3" json:"resource_names,omitempty"`
 	// Optional. A filter that chooses which log entries to return.  See [Advanced
 	// Logs Filters](https://cloud.google.com/logging/docs/view/advanced_filters).
@@ -1086,279 +1089,274 @@ var file_google_logging_v2_logging_proto_rawDesc = []byte{
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+	0x6e, 0x67, 0x3a, 0x3a, 0x56, 0x32, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1436,7 +1434,6 @@ func file_google_logging_v2_logging_proto_init() {
 		return
 	}
 	file_google_logging_v2_log_entry_proto_init()
-	file_google_logging_v2_logging_config_proto_init()
 	if !protoimpl.UnsafeEnabled {
 		file_google_logging_v2_logging_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteLogRequest); i {
@@ -1628,10 +1625,10 @@ const _ = grpc.SupportPackageIsVersion6
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type LoggingServiceV2Client interface {
-	// Deletes all the log entries in a log. The log reappears if it receives new
-	// entries. Log entries written shortly before the delete operation might not
-	// be deleted. Entries received after the delete operation with a timestamp
-	// before the operation will be deleted.
+	// Deletes all the log entries in a log for the _Default Log Bucket. The log
+	// reappears if it receives new entries. Log entries written shortly before
+	// the delete operation might not be deleted. Entries received after the
+	// delete operation with a timestamp before the operation will be deleted.
 	DeleteLog(ctx context.Context, in *DeleteLogRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// Writes log entries to Logging. This API method is the
 	// only way to send log entries to Logging. This method
@@ -1742,10 +1739,10 @@ func (x *loggingServiceV2TailLogEntriesClient) Recv() (*TailLogEntriesResponse,
 
 // LoggingServiceV2Server is the server API for LoggingServiceV2 service.
 type LoggingServiceV2Server interface {
-	// Deletes all the log entries in a log. The log reappears if it receives new
-	// entries. Log entries written shortly before the delete operation might not
-	// be deleted. Entries received after the delete operation with a timestamp
-	// before the operation will be deleted.
+	// Deletes all the log entries in a log for the _Default Log Bucket. The log
+	// reappears if it receives new entries. Log entries written shortly before
+	// the delete operation might not be deleted. Entries received after the
+	// delete operation with a timestamp before the operation will be deleted.
 	DeleteLog(context.Context, *DeleteLogRequest) (*emptypb.Empty, error)
 	// Writes log entries to Logging. This API method is the
 	// only way to send log entries to Logging. This method

vendor/google.golang.org/genproto/googleapis/logging/v2/logging_metrics.pb.go

@@ -1,4 +1,4 @@
-// Copyright 2020 Google LLC
+// Copyright 2022 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -33,9 +33,7 @@ import (
 	status "google.golang.org/grpc/status"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	_ "google.golang.org/protobuf/types/known/durationpb"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
-	_ "google.golang.org/protobuf/types/known/fieldmaskpb"
 	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 )
 
@@ -115,11 +113,11 @@ type LogMetric struct {
 	// `_-.,+!*',()%/`. The forward-slash character (`/`) denotes a hierarchy of
 	// name pieces, and it cannot be the first character of the name.
 	//
-	// The metric identifier in this field must not be
-	// [URL-encoded](https://en.wikipedia.org/wiki/Percent-encoding).
-	// However, when the metric identifier appears as the `[METRIC_ID]` part of a
-	// `metric_name` API parameter, then the metric identifier must be
-	// URL-encoded. Example: `"projects/my-project/metrics/nginx%2Frequests"`.
+	// This field is the `[METRIC_ID]` part of a metric resource name in the
+	// format "projects/[PROJECT_ID]/metrics/[METRIC_ID]". Example: If the
+	// resource name of a metric is
+	// `"projects/my-project/metrics/nginx%2Frequests"`, this field's value is
+	// `"nginx/requests"`.
 	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
 	// Optional. A description of this metric, which is used in documentation.
 	// The maximum length of the description is 8000 characters.
@@ -132,6 +130,9 @@ type LogMetric struct {
 	//
 	// The maximum length of the filter is 20000 characters.
 	Filter string `protobuf:"bytes,3,opt,name=filter,proto3" json:"filter,omitempty"`
+	// Optional. If set to True, then this metric is disabled and it does not
+	// generate any points.
+	Disabled bool `protobuf:"varint,12,opt,name=disabled,proto3" json:"disabled,omitempty"`
 	// Optional. The metric descriptor associated with the logs-based metric.
 	// If unspecified, it uses a default metric descriptor with a DELTA metric
 	// kind, INT64 value type, with no labels and a unit of "1". Such a metric
@@ -261,6 +262,13 @@ func (x *LogMetric) GetFilter() string {
 	return ""
 }
 
+func (x *LogMetric) GetDisabled() bool {
+	if x != nil {
+		return x.Disabled
+	}
+	return false
+}
+
 func (x *LogMetric) GetMetricDescriptor() *metric.MetricDescriptor {
 	if x != nil {
 		return x.MetricDescriptor
@@ -680,205 +688,203 @@ var file_google_logging_v2_logging_metrics_proto_rawDesc = []byte{
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 }
 
 var (

vendor/google.golang.org/genproto/googleapis/longrunning/operations.pb.go

@@ -0,0 +1,1229 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.12.2
+// source: google/longrunning/operations.proto
+
+package longrunning
+
+import (
+	context "context"
+	reflect "reflect"
+	sync "sync"
+
+	_ "google.golang.org/genproto/googleapis/api/annotations"
+	status "google.golang.org/genproto/googleapis/rpc/status"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status1 "google.golang.org/grpc/status"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	descriptorpb "google.golang.org/protobuf/types/descriptorpb"
+	anypb "google.golang.org/protobuf/types/known/anypb"
+	durationpb "google.golang.org/protobuf/types/known/durationpb"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This resource represents a long-running operation that is the result of a
+// network API call.
+type Operation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The server-assigned name, which is only unique within the same service that
+	// originally returns it. If you use the default HTTP mapping, the
+	// `name` should be a resource name ending with `operations/{unique_id}`.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Service-specific metadata associated with the operation.  It typically
+	// contains progress information and common metadata such as create time.
+	// Some services might not provide such metadata.  Any method that returns a
+	// long-running operation should document the metadata type, if any.
+	Metadata *anypb.Any `protobuf:"bytes,2,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	// If the value is `false`, it means the operation is still in progress.
+	// If `true`, the operation is completed, and either `error` or `response` is
+	// available.
+	Done bool `protobuf:"varint,3,opt,name=done,proto3" json:"done,omitempty"`
+	// The operation result, which can be either an `error` or a valid `response`.
+	// If `done` == `false`, neither `error` nor `response` is set.
+	// If `done` == `true`, exactly one of `error` or `response` is set.
+	//
+	// Types that are assignable to Result:
+	//	*Operation_Error
+	//	*Operation_Response
+	Result isOperation_Result `protobuf_oneof:"result"`
+}
+
+func (x *Operation) Reset() {
+	*x = Operation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Operation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Operation) ProtoMessage() {}
+
+func (x *Operation) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Operation.ProtoReflect.Descriptor instead.
+func (*Operation) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Operation) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Operation) GetMetadata() *anypb.Any {
+	if x != nil {
+		return x.Metadata
+	}
+	return nil
+}
+
+func (x *Operation) GetDone() bool {
+	if x != nil {
+		return x.Done
+	}
+	return false
+}
+
+func (m *Operation) GetResult() isOperation_Result {
+	if m != nil {
+		return m.Result
+	}
+	return nil
+}
+
+func (x *Operation) GetError() *status.Status {
+	if x, ok := x.GetResult().(*Operation_Error); ok {
+		return x.Error
+	}
+	return nil
+}
+
+func (x *Operation) GetResponse() *anypb.Any {
+	if x, ok := x.GetResult().(*Operation_Response); ok {
+		return x.Response
+	}
+	return nil
+}
+
+type isOperation_Result interface {
+	isOperation_Result()
+}
+
+type Operation_Error struct {
+	// The error result of the operation in case of failure or cancellation.
+	Error *status.Status `protobuf:"bytes,4,opt,name=error,proto3,oneof"`
+}
+
+type Operation_Response struct {
+	// The normal response of the operation in case of success.  If the original
+	// method returns no data on success, such as `Delete`, the response is
+	// `google.protobuf.Empty`.  If the original method is standard
+	// `Get`/`Create`/`Update`, the response should be the resource.  For other
+	// methods, the response should have the type `XxxResponse`, where `Xxx`
+	// is the original method name.  For example, if the original method name
+	// is `TakeSnapshot()`, the inferred response type is
+	// `TakeSnapshotResponse`.
+	Response *anypb.Any `protobuf:"bytes,5,opt,name=response,proto3,oneof"`
+}
+
+func (*Operation_Error) isOperation_Result() {}
+
+func (*Operation_Response) isOperation_Result() {}
+
+// The request message for [Operations.GetOperation][google.longrunning.Operations.GetOperation].
+type GetOperationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of the operation resource.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *GetOperationRequest) Reset() {
+	*x = GetOperationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetOperationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetOperationRequest) ProtoMessage() {}
+
+func (x *GetOperationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetOperationRequest.ProtoReflect.Descriptor instead.
+func (*GetOperationRequest) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *GetOperationRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+// The request message for [Operations.ListOperations][google.longrunning.Operations.ListOperations].
+type ListOperationsRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of the operation's parent resource.
+	Name string `protobuf:"bytes,4,opt,name=name,proto3" json:"name,omitempty"`
+	// The standard list filter.
+	Filter string `protobuf:"bytes,1,opt,name=filter,proto3" json:"filter,omitempty"`
+	// The standard list page size.
+	PageSize int32 `protobuf:"varint,2,opt,name=page_size,json=pageSize,proto3" json:"page_size,omitempty"`
+	// The standard list page token.
+	PageToken string `protobuf:"bytes,3,opt,name=page_token,json=pageToken,proto3" json:"page_token,omitempty"`
+}
+
+func (x *ListOperationsRequest) Reset() {
+	*x = ListOperationsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListOperationsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListOperationsRequest) ProtoMessage() {}
+
+func (x *ListOperationsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListOperationsRequest.ProtoReflect.Descriptor instead.
+func (*ListOperationsRequest) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ListOperationsRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *ListOperationsRequest) GetFilter() string {
+	if x != nil {
+		return x.Filter
+	}
+	return ""
+}
+
+func (x *ListOperationsRequest) GetPageSize() int32 {
+	if x != nil {
+		return x.PageSize
+	}
+	return 0
+}
+
+func (x *ListOperationsRequest) GetPageToken() string {
+	if x != nil {
+		return x.PageToken
+	}
+	return ""
+}
+
+// The response message for [Operations.ListOperations][google.longrunning.Operations.ListOperations].
+type ListOperationsResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// A list of operations that matches the specified filter in the request.
+	Operations []*Operation `protobuf:"bytes,1,rep,name=operations,proto3" json:"operations,omitempty"`
+	// The standard List next-page token.
+	NextPageToken string `protobuf:"bytes,2,opt,name=next_page_token,json=nextPageToken,proto3" json:"next_page_token,omitempty"`
+}
+
+func (x *ListOperationsResponse) Reset() {
+	*x = ListOperationsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListOperationsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListOperationsResponse) ProtoMessage() {}
+
+func (x *ListOperationsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListOperationsResponse.ProtoReflect.Descriptor instead.
+func (*ListOperationsResponse) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *ListOperationsResponse) GetOperations() []*Operation {
+	if x != nil {
+		return x.Operations
+	}
+	return nil
+}
+
+func (x *ListOperationsResponse) GetNextPageToken() string {
+	if x != nil {
+		return x.NextPageToken
+	}
+	return ""
+}
+
+// The request message for [Operations.CancelOperation][google.longrunning.Operations.CancelOperation].
+type CancelOperationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of the operation resource to be cancelled.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *CancelOperationRequest) Reset() {
+	*x = CancelOperationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CancelOperationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CancelOperationRequest) ProtoMessage() {}
+
+func (x *CancelOperationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CancelOperationRequest.ProtoReflect.Descriptor instead.
+func (*CancelOperationRequest) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *CancelOperationRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+// The request message for [Operations.DeleteOperation][google.longrunning.Operations.DeleteOperation].
+type DeleteOperationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of the operation resource to be deleted.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *DeleteOperationRequest) Reset() {
+	*x = DeleteOperationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteOperationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteOperationRequest) ProtoMessage() {}
+
+func (x *DeleteOperationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteOperationRequest.ProtoReflect.Descriptor instead.
+func (*DeleteOperationRequest) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *DeleteOperationRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+// The request message for [Operations.WaitOperation][google.longrunning.Operations.WaitOperation].
+type WaitOperationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The name of the operation resource to wait on.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// The maximum duration to wait before timing out. If left blank, the wait
+	// will be at most the time permitted by the underlying HTTP/RPC protocol.
+	// If RPC context deadline is also specified, the shorter one will be used.
+	Timeout *durationpb.Duration `protobuf:"bytes,2,opt,name=timeout,proto3" json:"timeout,omitempty"`
+}
+
+func (x *WaitOperationRequest) Reset() {
+	*x = WaitOperationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *WaitOperationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*WaitOperationRequest) ProtoMessage() {}
+
+func (x *WaitOperationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use WaitOperationRequest.ProtoReflect.Descriptor instead.
+func (*WaitOperationRequest) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *WaitOperationRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *WaitOperationRequest) GetTimeout() *durationpb.Duration {
+	if x != nil {
+		return x.Timeout
+	}
+	return nil
+}
+
+// A message representing the message types used by a long-running operation.
+//
+// Example:
+//
+//   rpc LongRunningRecognize(LongRunningRecognizeRequest)
+//       returns (google.longrunning.Operation) {
+//     option (google.longrunning.operation_info) = {
+//       response_type: "LongRunningRecognizeResponse"
+//       metadata_type: "LongRunningRecognizeMetadata"
+//     };
+//   }
+type OperationInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Required. The message name of the primary return type for this
+	// long-running operation.
+	// This type will be used to deserialize the LRO's response.
+	//
+	// If the response is in a different package from the rpc, a fully-qualified
+	// message name must be used (e.g. `google.protobuf.Struct`).
+	//
+	// Note: Altering this value constitutes a breaking change.
+	ResponseType string `protobuf:"bytes,1,opt,name=response_type,json=responseType,proto3" json:"response_type,omitempty"`
+	// Required. The message name of the metadata type for this long-running
+	// operation.
+	//
+	// If the response is in a different package from the rpc, a fully-qualified
+	// message name must be used (e.g. `google.protobuf.Struct`).
+	//
+	// Note: Altering this value constitutes a breaking change.
+	MetadataType string `protobuf:"bytes,2,opt,name=metadata_type,json=metadataType,proto3" json:"metadata_type,omitempty"`
+}
+
+func (x *OperationInfo) Reset() {
+	*x = OperationInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_longrunning_operations_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *OperationInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*OperationInfo) ProtoMessage() {}
+
+func (x *OperationInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_google_longrunning_operations_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use OperationInfo.ProtoReflect.Descriptor instead.
+func (*OperationInfo) Descriptor() ([]byte, []int) {
+	return file_google_longrunning_operations_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *OperationInfo) GetResponseType() string {
+	if x != nil {
+		return x.ResponseType
+	}
+	return ""
+}
+
+func (x *OperationInfo) GetMetadataType() string {
+	if x != nil {
+		return x.MetadataType
+	}
+	return ""
+}
+
+var file_google_longrunning_operations_proto_extTypes = []protoimpl.ExtensionInfo{
+	{
+		ExtendedType:  (*descriptorpb.MethodOptions)(nil),
+		ExtensionType: (*OperationInfo)(nil),
+		Field:         1049,
+		Name:          "google.longrunning.operation_info",
+		Tag:           "bytes,1049,opt,name=operation_info",
+		Filename:      "google/longrunning/operations.proto",
+	},
+}
+
+// Extension fields to descriptorpb.MethodOptions.
+var (
+	// Additional information regarding long-running operations.
+	// In particular, this specifies the types that are returned from
+	// long-running operations.
+	//
+	// Required for methods that return `google.longrunning.Operation`; invalid
+	// otherwise.
+	//
+	// optional google.longrunning.OperationInfo operation_info = 1049;
+	E_OperationInfo = &file_google_longrunning_operations_proto_extTypes[0]
+)
+
+var File_google_longrunning_operations_proto protoreflect.FileDescriptor
+
+var file_google_longrunning_operations_proto_rawDesc = []byte{
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+}
+
+var (
+	file_google_longrunning_operations_proto_rawDescOnce sync.Once
+	file_google_longrunning_operations_proto_rawDescData = file_google_longrunning_operations_proto_rawDesc
+)
+
+func file_google_longrunning_operations_proto_rawDescGZIP() []byte {
+	file_google_longrunning_operations_proto_rawDescOnce.Do(func() {
+		file_google_longrunning_operations_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_longrunning_operations_proto_rawDescData)
+	})
+	return file_google_longrunning_operations_proto_rawDescData
+}
+
+var file_google_longrunning_operations_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_google_longrunning_operations_proto_goTypes = []interface{}{
+	(*Operation)(nil),                  // 0: google.longrunning.Operation
+	(*GetOperationRequest)(nil),        // 1: google.longrunning.GetOperationRequest
+	(*ListOperationsRequest)(nil),      // 2: google.longrunning.ListOperationsRequest
+	(*ListOperationsResponse)(nil),     // 3: google.longrunning.ListOperationsResponse
+	(*CancelOperationRequest)(nil),     // 4: google.longrunning.CancelOperationRequest
+	(*DeleteOperationRequest)(nil),     // 5: google.longrunning.DeleteOperationRequest
+	(*WaitOperationRequest)(nil),       // 6: google.longrunning.WaitOperationRequest
+	(*OperationInfo)(nil),              // 7: google.longrunning.OperationInfo
+	(*anypb.Any)(nil),                  // 8: google.protobuf.Any
+	(*status.Status)(nil),              // 9: google.rpc.Status
+	(*durationpb.Duration)(nil),        // 10: google.protobuf.Duration
+	(*descriptorpb.MethodOptions)(nil), // 11: google.protobuf.MethodOptions
+	(*emptypb.Empty)(nil),              // 12: google.protobuf.Empty
+}
+var file_google_longrunning_operations_proto_depIdxs = []int32{
+	8,  // 0: google.longrunning.Operation.metadata:type_name -> google.protobuf.Any
+	9,  // 1: google.longrunning.Operation.error:type_name -> google.rpc.Status
+	8,  // 2: google.longrunning.Operation.response:type_name -> google.protobuf.Any
+	0,  // 3: google.longrunning.ListOperationsResponse.operations:type_name -> google.longrunning.Operation
+	10, // 4: google.longrunning.WaitOperationRequest.timeout:type_name -> google.protobuf.Duration
+	11, // 5: google.longrunning.operation_info:extendee -> google.protobuf.MethodOptions
+	7,  // 6: google.longrunning.operation_info:type_name -> google.longrunning.OperationInfo
+	2,  // 7: google.longrunning.Operations.ListOperations:input_type -> google.longrunning.ListOperationsRequest
+	1,  // 8: google.longrunning.Operations.GetOperation:input_type -> google.longrunning.GetOperationRequest
+	5,  // 9: google.longrunning.Operations.DeleteOperation:input_type -> google.longrunning.DeleteOperationRequest
+	4,  // 10: google.longrunning.Operations.CancelOperation:input_type -> google.longrunning.CancelOperationRequest
+	6,  // 11: google.longrunning.Operations.WaitOperation:input_type -> google.longrunning.WaitOperationRequest
+	3,  // 12: google.longrunning.Operations.ListOperations:output_type -> google.longrunning.ListOperationsResponse
+	0,  // 13: google.longrunning.Operations.GetOperation:output_type -> google.longrunning.Operation
+	12, // 14: google.longrunning.Operations.DeleteOperation:output_type -> google.protobuf.Empty
+	12, // 15: google.longrunning.Operations.CancelOperation:output_type -> google.protobuf.Empty
+	0,  // 16: google.longrunning.Operations.WaitOperation:output_type -> google.longrunning.Operation
+	12, // [12:17] is the sub-list for method output_type
+	7,  // [7:12] is the sub-list for method input_type
+	6,  // [6:7] is the sub-list for extension type_name
+	5,  // [5:6] is the sub-list for extension extendee
+	0,  // [0:5] is the sub-list for field type_name
+}
+
+func init() { file_google_longrunning_operations_proto_init() }
+func file_google_longrunning_operations_proto_init() {
+	if File_google_longrunning_operations_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_google_longrunning_operations_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Operation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetOperationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListOperationsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListOperationsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CancelOperationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteOperationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*WaitOperationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_longrunning_operations_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*OperationInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_google_longrunning_operations_proto_msgTypes[0].OneofWrappers = []interface{}{
+		(*Operation_Error)(nil),
+		(*Operation_Response)(nil),
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_google_longrunning_operations_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   8,
+			NumExtensions: 1,
+			NumServices:   1,
+		},
+		GoTypes:           file_google_longrunning_operations_proto_goTypes,
+		DependencyIndexes: file_google_longrunning_operations_proto_depIdxs,
+		MessageInfos:      file_google_longrunning_operations_proto_msgTypes,
+		ExtensionInfos:    file_google_longrunning_operations_proto_extTypes,
+	}.Build()
+	File_google_longrunning_operations_proto = out.File
+	file_google_longrunning_operations_proto_rawDesc = nil
+	file_google_longrunning_operations_proto_goTypes = nil
+	file_google_longrunning_operations_proto_depIdxs = nil
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConnInterface
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion6
+
+// OperationsClient is the client API for Operations service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type OperationsClient interface {
+	// Lists operations that match the specified filter in the request. If the
+	// server doesn't support this method, it returns `UNIMPLEMENTED`.
+	//
+	// NOTE: the `name` binding allows API services to override the binding
+	// to use different resource name schemes, such as `users/*/operations`. To
+	// override the binding, API services can add a binding such as
+	// `"/v1/{name=users/*}/operations"` to their service configuration.
+	// For backwards compatibility, the default name includes the operations
+	// collection id, however overriding users must ensure the name binding
+	// is the parent resource, without the operations collection id.
+	ListOperations(ctx context.Context, in *ListOperationsRequest, opts ...grpc.CallOption) (*ListOperationsResponse, error)
+	// Gets the latest state of a long-running operation.  Clients can use this
+	// method to poll the operation result at intervals as recommended by the API
+	// service.
+	GetOperation(ctx context.Context, in *GetOperationRequest, opts ...grpc.CallOption) (*Operation, error)
+	// Deletes a long-running operation. This method indicates that the client is
+	// no longer interested in the operation result. It does not cancel the
+	// operation. If the server doesn't support this method, it returns
+	// `google.rpc.Code.UNIMPLEMENTED`.
+	DeleteOperation(ctx context.Context, in *DeleteOperationRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	// Starts asynchronous cancellation on a long-running operation.  The server
+	// makes a best effort to cancel the operation, but success is not
+	// guaranteed.  If the server doesn't support this method, it returns
+	// `google.rpc.Code.UNIMPLEMENTED`.  Clients can use
+	// [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+	// other methods to check whether the cancellation succeeded or whether the
+	// operation completed despite cancellation. On successful cancellation,
+	// the operation is not deleted; instead, it becomes an operation with
+	// an [Operation.error][google.longrunning.Operation.error] value with a [google.rpc.Status.code][google.rpc.Status.code] of 1,
+	// corresponding to `Code.CANCELLED`.
+	CancelOperation(ctx context.Context, in *CancelOperationRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	// Waits until the specified long-running operation is done or reaches at most
+	// a specified timeout, returning the latest state.  If the operation is
+	// already done, the latest state is immediately returned.  If the timeout
+	// specified is greater than the default HTTP/RPC timeout, the HTTP/RPC
+	// timeout is used.  If the server does not support this method, it returns
+	// `google.rpc.Code.UNIMPLEMENTED`.
+	// Note that this method is on a best-effort basis.  It may return the latest
+	// state before the specified timeout (including immediately), meaning even an
+	// immediate response is no guarantee that the operation is done.
+	WaitOperation(ctx context.Context, in *WaitOperationRequest, opts ...grpc.CallOption) (*Operation, error)
+}
+
+type operationsClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewOperationsClient(cc grpc.ClientConnInterface) OperationsClient {
+	return &operationsClient{cc}
+}
+
+func (c *operationsClient) ListOperations(ctx context.Context, in *ListOperationsRequest, opts ...grpc.CallOption) (*ListOperationsResponse, error) {
+	out := new(ListOperationsResponse)
+	err := c.cc.Invoke(ctx, "/google.longrunning.Operations/ListOperations", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *operationsClient) GetOperation(ctx context.Context, in *GetOperationRequest, opts ...grpc.CallOption) (*Operation, error) {
+	out := new(Operation)
+	err := c.cc.Invoke(ctx, "/google.longrunning.Operations/GetOperation", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *operationsClient) DeleteOperation(ctx context.Context, in *DeleteOperationRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, "/google.longrunning.Operations/DeleteOperation", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *operationsClient) CancelOperation(ctx context.Context, in *CancelOperationRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, "/google.longrunning.Operations/CancelOperation", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *operationsClient) WaitOperation(ctx context.Context, in *WaitOperationRequest, opts ...grpc.CallOption) (*Operation, error) {
+	out := new(Operation)
+	err := c.cc.Invoke(ctx, "/google.longrunning.Operations/WaitOperation", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// OperationsServer is the server API for Operations service.
+type OperationsServer interface {
+	// Lists operations that match the specified filter in the request. If the
+	// server doesn't support this method, it returns `UNIMPLEMENTED`.
+	//
+	// NOTE: the `name` binding allows API services to override the binding
+	// to use different resource name schemes, such as `users/*/operations`. To
+	// override the binding, API services can add a binding such as
+	// `"/v1/{name=users/*}/operations"` to their service configuration.
+	// For backwards compatibility, the default name includes the operations
+	// collection id, however overriding users must ensure the name binding
+	// is the parent resource, without the operations collection id.
+	ListOperations(context.Context, *ListOperationsRequest) (*ListOperationsResponse, error)
+	// Gets the latest state of a long-running operation.  Clients can use this
+	// method to poll the operation result at intervals as recommended by the API
+	// service.
+	GetOperation(context.Context, *GetOperationRequest) (*Operation, error)
+	// Deletes a long-running operation. This method indicates that the client is
+	// no longer interested in the operation result. It does not cancel the
+	// operation. If the server doesn't support this method, it returns
+	// `google.rpc.Code.UNIMPLEMENTED`.
+	DeleteOperation(context.Context, *DeleteOperationRequest) (*emptypb.Empty, error)
+	// Starts asynchronous cancellation on a long-running operation.  The server
+	// makes a best effort to cancel the operation, but success is not
+	// guaranteed.  If the server doesn't support this method, it returns
+	// `google.rpc.Code.UNIMPLEMENTED`.  Clients can use
+	// [Operations.GetOperation][google.longrunning.Operations.GetOperation] or
+	// other methods to check whether the cancellation succeeded or whether the
+	// operation completed despite cancellation. On successful cancellation,
+	// the operation is not deleted; instead, it becomes an operation with
+	// an [Operation.error][google.longrunning.Operation.error] value with a [google.rpc.Status.code][google.rpc.Status.code] of 1,
+	// corresponding to `Code.CANCELLED`.
+	CancelOperation(context.Context, *CancelOperationRequest) (*emptypb.Empty, error)
+	// Waits until the specified long-running operation is done or reaches at most
+	// a specified timeout, returning the latest state.  If the operation is
+	// already done, the latest state is immediately returned.  If the timeout
+	// specified is greater than the default HTTP/RPC timeout, the HTTP/RPC
+	// timeout is used.  If the server does not support this method, it returns
+	// `google.rpc.Code.UNIMPLEMENTED`.
+	// Note that this method is on a best-effort basis.  It may return the latest
+	// state before the specified timeout (including immediately), meaning even an
+	// immediate response is no guarantee that the operation is done.
+	WaitOperation(context.Context, *WaitOperationRequest) (*Operation, error)
+}
+
+// UnimplementedOperationsServer can be embedded to have forward compatible implementations.
+type UnimplementedOperationsServer struct {
+}
+
+func (*UnimplementedOperationsServer) ListOperations(context.Context, *ListOperationsRequest) (*ListOperationsResponse, error) {
+	return nil, status1.Errorf(codes.Unimplemented, "method ListOperations not implemented")
+}
+func (*UnimplementedOperationsServer) GetOperation(context.Context, *GetOperationRequest) (*Operation, error) {
+	return nil, status1.Errorf(codes.Unimplemented, "method GetOperation not implemented")
+}
+func (*UnimplementedOperationsServer) DeleteOperation(context.Context, *DeleteOperationRequest) (*emptypb.Empty, error) {
+	return nil, status1.Errorf(codes.Unimplemented, "method DeleteOperation not implemented")
+}
+func (*UnimplementedOperationsServer) CancelOperation(context.Context, *CancelOperationRequest) (*emptypb.Empty, error) {
+	return nil, status1.Errorf(codes.Unimplemented, "method CancelOperation not implemented")
+}
+func (*UnimplementedOperationsServer) WaitOperation(context.Context, *WaitOperationRequest) (*Operation, error) {
+	return nil, status1.Errorf(codes.Unimplemented, "method WaitOperation not implemented")
+}
+
+func RegisterOperationsServer(s *grpc.Server, srv OperationsServer) {
+	s.RegisterService(&_Operations_serviceDesc, srv)
+}
+
+func _Operations_ListOperations_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListOperationsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(OperationsServer).ListOperations(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/google.longrunning.Operations/ListOperations",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(OperationsServer).ListOperations(ctx, req.(*ListOperationsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Operations_GetOperation_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetOperationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(OperationsServer).GetOperation(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/google.longrunning.Operations/GetOperation",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(OperationsServer).GetOperation(ctx, req.(*GetOperationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Operations_DeleteOperation_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteOperationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(OperationsServer).DeleteOperation(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/google.longrunning.Operations/DeleteOperation",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(OperationsServer).DeleteOperation(ctx, req.(*DeleteOperationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Operations_CancelOperation_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CancelOperationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(OperationsServer).CancelOperation(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/google.longrunning.Operations/CancelOperation",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(OperationsServer).CancelOperation(ctx, req.(*CancelOperationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Operations_WaitOperation_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(WaitOperationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(OperationsServer).WaitOperation(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/google.longrunning.Operations/WaitOperation",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(OperationsServer).WaitOperation(ctx, req.(*WaitOperationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _Operations_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "google.longrunning.Operations",
+	HandlerType: (*OperationsServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "ListOperations",
+			Handler:    _Operations_ListOperations_Handler,
+		},
+		{
+			MethodName: "GetOperation",
+			Handler:    _Operations_GetOperation_Handler,
+		},
+		{
+			MethodName: "DeleteOperation",
+			Handler:    _Operations_DeleteOperation_Handler,
+		},
+		{
+			MethodName: "CancelOperation",
+			Handler:    _Operations_CancelOperation_Handler,
+		},
+		{
+			MethodName: "WaitOperation",
+			Handler:    _Operations_WaitOperation_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "google/longrunning/operations.proto",
+}

vendor/google.golang.org/grpc/balancer/balancer.go

@@ -27,6 +27,7 @@ import (
 	"net"
 	"strings"
 
+	"google.golang.org/grpc/channelz"
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/internal"
@@ -192,7 +193,7 @@ type BuildOptions struct {
 	// server can ignore this field.
 	Authority string
 	// ChannelzParentID is the parent ClientConn's channelz ID.
-	ChannelzParentID int64
+	ChannelzParentID *channelz.Identifier
 	// CustomUserAgent is the custom user agent set on the parent ClientConn.
 	// The balancer should set the same custom user agent if it creates a
 	// ClientConn.

vendor/google.golang.org/grpc/balancer/grpclb/grpclb_remote_balancer.go

@@ -35,7 +35,6 @@ import (
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/internal/backoff"
-	"google.golang.org/grpc/internal/channelz"
 	imetadata "google.golang.org/grpc/internal/metadata"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/metadata"
@@ -240,9 +239,7 @@ func (lb *lbBalancer) newRemoteBalancerCCWrapper() {
 	// Explicitly set pickfirst as the balancer.
 	dopts = append(dopts, grpc.WithDefaultServiceConfig(`{"loadBalancingPolicy":"pick_first"}`))
 	dopts = append(dopts, grpc.WithResolvers(lb.manualResolver))
-	if channelz.IsOn() {
-		dopts = append(dopts, grpc.WithChannelzParentID(lb.opt.ChannelzParentID))
-	}
+	dopts = append(dopts, grpc.WithChannelzParentID(lb.opt.ChannelzParentID))
 
 	// Enable Keepalive for grpclb client.
 	dopts = append(dopts, grpc.WithKeepaliveParams(keepalive.ClientParameters{

vendor/google.golang.org/grpc/balancer_conn_wrappers.go

@@ -20,130 +20,178 @@ package grpc
 
 import (
 	"fmt"
+	"strings"
 	"sync"
 
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/internal/balancer/gracefulswitch"
 	"google.golang.org/grpc/internal/buffer"
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcsync"
 	"google.golang.org/grpc/resolver"
 )
 
-// scStateUpdate contains the subConn and the new state it changed to.
-type scStateUpdate struct {
-	sc    balancer.SubConn
-	state connectivity.State
-	err   error
-}
+// ccBalancerWrapper sits between the ClientConn and the Balancer.
+//
+// ccBalancerWrapper implements methods corresponding to the ones on the
+// balancer.Balancer interface. The ClientConn is free to call these methods
+// concurrently and the ccBalancerWrapper ensures that calls from the ClientConn
+// to the Balancer happen synchronously and in order.
+//
+// ccBalancerWrapper also implements the balancer.ClientConn interface and is
+// passed to the Balancer implementations. It invokes unexported methods on the
+// ClientConn to handle these calls from the Balancer.
+//
+// It uses the gracefulswitch.Balancer internally to ensure that balancer
+// switches happen in a graceful manner.
+type ccBalancerWrapper struct {
+	cc *ClientConn
 
-// exitIdle contains no data and is just a signal sent on the updateCh in
-// ccBalancerWrapper to instruct the balancer to exit idle.
-type exitIdle struct{}
+	// Since these fields are accessed only from handleXxx() methods which are
+	// synchronized by the watcher goroutine, we do not need a mutex to protect
+	// these fields.
+	balancer        *gracefulswitch.Balancer
+	curBalancerName string
 
-// ccBalancerWrapper is a wrapper on top of cc for balancers.
-// It implements balancer.ClientConn interface.
-type ccBalancerWrapper struct {
-	cc          *ClientConn
-	balancerMu  sync.Mutex // synchronizes calls to the balancer
-	balancer    balancer.Balancer
-	hasExitIdle bool
-	updateCh    *buffer.Unbounded
-	closed      *grpcsync.Event
-	done        *grpcsync.Event
-
-	mu       sync.Mutex
-	subConns map[*acBalancerWrapper]struct{}
+	updateCh *buffer.Unbounded // Updates written on this channel are processed by watcher().
+	resultCh *buffer.Unbounded // Results of calls to UpdateClientConnState() are pushed here.
+	closed   *grpcsync.Event   // Indicates if close has been called.
+	done     *grpcsync.Event   // Indicates if close has completed its work.
 }
 
-func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.BuildOptions) *ccBalancerWrapper {
+// newCCBalancerWrapper creates a new balancer wrapper. The underlying balancer
+// is not created until the switchTo() method is invoked.
+func newCCBalancerWrapper(cc *ClientConn, bopts balancer.BuildOptions) *ccBalancerWrapper {
 	ccb := &ccBalancerWrapper{
 		cc:       cc,
 		updateCh: buffer.NewUnbounded(),
+		resultCh: buffer.NewUnbounded(),
 		closed:   grpcsync.NewEvent(),
 		done:     grpcsync.NewEvent(),
-		subConns: make(map[*acBalancerWrapper]struct{}),
 	}
 	go ccb.watcher()
-	ccb.balancer = b.Build(ccb, bopts)
-	_, ccb.hasExitIdle = ccb.balancer.(balancer.ExitIdler)
+	ccb.balancer = gracefulswitch.NewBalancer(ccb, bopts)
 	return ccb
 }
 
-// watcher balancer functions sequentially, so the balancer can be implemented
-// lock-free.
+// The following xxxUpdate structs wrap the arguments received as part of the
+// corresponding update. The watcher goroutine uses the 'type' of the update to
+// invoke the appropriate handler routine to handle the update.
+
+type ccStateUpdate struct {
+	ccs *balancer.ClientConnState
+}
+
+type scStateUpdate struct {
+	sc    balancer.SubConn
+	state connectivity.State
+	err   error
+}
+
+type exitIdleUpdate struct{}
+
+type resolverErrorUpdate struct {
+	err error
+}
+
+type switchToUpdate struct {
+	name string
+}
+
+type subConnUpdate struct {
+	acbw *acBalancerWrapper
+}
+
+// watcher is a long-running goroutine which reads updates from a channel and
+// invokes corresponding methods on the underlying balancer. It ensures that
+// these methods are invoked in a synchronous fashion. It also ensures that
+// these methods are invoked in the order in which the updates were received.
 func (ccb *ccBalancerWrapper) watcher() {
 	for {
 		select {
-		case t := <-ccb.updateCh.Get():
+		case u := <-ccb.updateCh.Get():
 			ccb.updateCh.Load()
 			if ccb.closed.HasFired() {
 				break
 			}
-			switch u := t.(type) {
+			switch update := u.(type) {
+			case *ccStateUpdate:
+				ccb.handleClientConnStateChange(update.ccs)
 			case *scStateUpdate:
-				ccb.balancerMu.Lock()
-				ccb.balancer.UpdateSubConnState(u.sc, balancer.SubConnState{ConnectivityState: u.state, ConnectionError: u.err})
-				ccb.balancerMu.Unlock()
-			case *acBalancerWrapper:
-				ccb.mu.Lock()
-				if ccb.subConns != nil {
-					delete(ccb.subConns, u)
-					ccb.cc.removeAddrConn(u.getAddrConn(), errConnDrain)
-				}
-				ccb.mu.Unlock()
-			case exitIdle:
-				if ccb.cc.GetState() == connectivity.Idle {
-					if ei, ok := ccb.balancer.(balancer.ExitIdler); ok {
-						// We already checked that the balancer implements
-						// ExitIdle before pushing the event to updateCh, but
-						// check conditionally again as defensive programming.
-						ccb.balancerMu.Lock()
-						ei.ExitIdle()
-						ccb.balancerMu.Unlock()
-					}
-				}
+				ccb.handleSubConnStateChange(update)
+			case *exitIdleUpdate:
+				ccb.handleExitIdle()
+			case *resolverErrorUpdate:
+				ccb.handleResolverError(update.err)
+			case *switchToUpdate:
+				ccb.handleSwitchTo(update.name)
+			case *subConnUpdate:
+				ccb.handleRemoveSubConn(update.acbw)
 			default:
-				logger.Errorf("ccBalancerWrapper.watcher: unknown update %+v, type %T", t, t)
+				logger.Errorf("ccBalancerWrapper.watcher: unknown update %+v, type %T", update, update)
 			}
 		case <-ccb.closed.Done():
 		}
 
 		if ccb.closed.HasFired() {
-			ccb.balancerMu.Lock()
-			ccb.balancer.Close()
-			ccb.balancerMu.Unlock()
-			ccb.mu.Lock()
-			scs := ccb.subConns
-			ccb.subConns = nil
-			ccb.mu.Unlock()
-			ccb.UpdateState(balancer.State{ConnectivityState: connectivity.Connecting, Picker: nil})
-			ccb.done.Fire()
-			// Fire done before removing the addr conns.  We can safely unblock
-			// ccb.close and allow the removeAddrConns to happen
-			// asynchronously.
-			for acbw := range scs {
-				ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
-			}
+			ccb.handleClose()
 			return
 		}
 	}
 }
 
-func (ccb *ccBalancerWrapper) close() {
-	ccb.closed.Fire()
-	<-ccb.done.Done()
+// updateClientConnState is invoked by grpc to push a ClientConnState update to
+// the underlying balancer.
+//
+// Unlike other methods invoked by grpc to push updates to the underlying
+// balancer, this method cannot simply push the update onto the update channel
+// and return. It needs to return the error returned by the underlying balancer
+// back to grpc which propagates that to the resolver.
+func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) error {
+	ccb.updateCh.Put(&ccStateUpdate{ccs: ccs})
+
+	var res interface{}
+	select {
+	case res = <-ccb.resultCh.Get():
+		ccb.resultCh.Load()
+	case <-ccb.closed.Done():
+		// Return early if the balancer wrapper is closed while we are waiting for
+		// the underlying balancer to process a ClientConnState update.
+		return nil
+	}
+	// If the returned error is nil, attempting to type assert to error leads to
+	// panic. So, this needs to handled separately.
+	if res == nil {
+		return nil
+	}
+	return res.(error)
 }
 
-func (ccb *ccBalancerWrapper) exitIdle() bool {
-	if !ccb.hasExitIdle {
-		return false
+// handleClientConnStateChange handles a ClientConnState update from the update
+// channel and invokes the appropriate method on the underlying balancer.
+//
+// If the addresses specified in the update contain addresses of type "grpclb"
+// and the selected LB policy is not "grpclb", these addresses will be filtered
+// out and ccs will be modified with the updated address list.
+func (ccb *ccBalancerWrapper) handleClientConnStateChange(ccs *balancer.ClientConnState) {
+	if ccb.curBalancerName != grpclbName {
+		// Filter any grpclb addresses since we don't have the grpclb balancer.
+		var addrs []resolver.Address
+		for _, addr := range ccs.ResolverState.Addresses {
+			if addr.Type == resolver.GRPCLB {
+				continue
+			}
+			addrs = append(addrs, addr)
+		}
+		ccs.ResolverState.Addresses = addrs
 	}
-	ccb.updateCh.Put(exitIdle{})
-	return true
+	ccb.resultCh.Put(ccb.balancer.UpdateClientConnState(*ccs))
 }
 
-func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State, err error) {
+// updateSubConnState is invoked by grpc to push a subConn state update to the
+// underlying balancer.
+func (ccb *ccBalancerWrapper) updateSubConnState(sc balancer.SubConn, s connectivity.State, err error) {
 	// When updating addresses for a SubConn, if the address in use is not in
 	// the new addresses, the old ac will be tearDown() and a new ac will be
 	// created. tearDown() generates a state change with Shutdown state, we
@@ -161,44 +209,125 @@ func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s co
 	})
 }
 
-func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) error {
-	ccb.balancerMu.Lock()
-	defer ccb.balancerMu.Unlock()
-	return ccb.balancer.UpdateClientConnState(*ccs)
+// handleSubConnStateChange handles a SubConnState update from the update
+// channel and invokes the appropriate method on the underlying balancer.
+func (ccb *ccBalancerWrapper) handleSubConnStateChange(update *scStateUpdate) {
+	ccb.balancer.UpdateSubConnState(update.sc, balancer.SubConnState{ConnectivityState: update.state, ConnectionError: update.err})
+}
+
+func (ccb *ccBalancerWrapper) exitIdle() {
+	ccb.updateCh.Put(&exitIdleUpdate{})
+}
+
+func (ccb *ccBalancerWrapper) handleExitIdle() {
+	if ccb.cc.GetState() != connectivity.Idle {
+		return
+	}
+	ccb.balancer.ExitIdle()
 }
 
 func (ccb *ccBalancerWrapper) resolverError(err error) {
-	ccb.balancerMu.Lock()
-	defer ccb.balancerMu.Unlock()
+	ccb.updateCh.Put(&resolverErrorUpdate{err: err})
+}
+
+func (ccb *ccBalancerWrapper) handleResolverError(err error) {
 	ccb.balancer.ResolverError(err)
 }
 
+// switchTo is invoked by grpc to instruct the balancer wrapper to switch to the
+// LB policy identified by name.
+//
+// ClientConn calls newCCBalancerWrapper() at creation time. Upon receipt of the
+// first good update from the name resolver, it determines the LB policy to use
+// and invokes the switchTo() method. Upon receipt of every subsequent update
+// from the name resolver, it invokes this method.
+//
+// the ccBalancerWrapper keeps track of the current LB policy name, and skips
+// the graceful balancer switching process if the name does not change.
+func (ccb *ccBalancerWrapper) switchTo(name string) {
+	ccb.updateCh.Put(&switchToUpdate{name: name})
+}
+
+// handleSwitchTo handles a balancer switch update from the update channel. It
+// calls the SwitchTo() method on the gracefulswitch.Balancer with a
+// balancer.Builder corresponding to name. If no balancer.Builder is registered
+// for the given name, it uses the default LB policy which is "pick_first".
+func (ccb *ccBalancerWrapper) handleSwitchTo(name string) {
+	// TODO: Other languages use case-insensitive balancer registries. We should
+	// switch as well. See: https://github.com/grpc/grpc-go/issues/5288.
+	if strings.EqualFold(ccb.curBalancerName, name) {
+		return
+	}
+
+	// TODO: Ensure that name is a registered LB policy when we get here.
+	// We currently only validate the `loadBalancingConfig` field. We need to do
+	// the same for the `loadBalancingPolicy` field and reject the service config
+	// if the specified policy is not registered.
+	builder := balancer.Get(name)
+	if builder == nil {
+		channelz.Warningf(logger, ccb.cc.channelzID, "Channel switches to new LB policy %q, since the specified LB policy %q was not registered", PickFirstBalancerName, name)
+		builder = newPickfirstBuilder()
+	} else {
+		channelz.Infof(logger, ccb.cc.channelzID, "Channel switches to new LB policy %q", name)
+	}
+
+	if err := ccb.balancer.SwitchTo(builder); err != nil {
+		channelz.Errorf(logger, ccb.cc.channelzID, "Channel failed to build new LB policy %q: %v", name, err)
+		return
+	}
+	ccb.curBalancerName = builder.Name()
+}
+
+// handleRemoveSucConn handles a request from the underlying balancer to remove
+// a subConn.
+//
+// See comments in RemoveSubConn() for more details.
+func (ccb *ccBalancerWrapper) handleRemoveSubConn(acbw *acBalancerWrapper) {
+	ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
+}
+
+func (ccb *ccBalancerWrapper) close() {
+	ccb.closed.Fire()
+	<-ccb.done.Done()
+}
+
+func (ccb *ccBalancerWrapper) handleClose() {
+	ccb.balancer.Close()
+	ccb.done.Fire()
+}
+
 func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
 	if len(addrs) <= 0 {
 		return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list")
 	}
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return nil, fmt.Errorf("grpc: ClientConn balancer wrapper was closed")
-	}
 	ac, err := ccb.cc.newAddrConn(addrs, opts)
 	if err != nil {
+		channelz.Warningf(logger, ccb.cc.channelzID, "acBalancerWrapper: NewSubConn: failed to newAddrConn: %v", err)
 		return nil, err
 	}
 	acbw := &acBalancerWrapper{ac: ac}
 	acbw.ac.mu.Lock()
 	ac.acbw = acbw
 	acbw.ac.mu.Unlock()
-	ccb.subConns[acbw] = struct{}{}
 	return acbw, nil
 }
 
 func (ccb *ccBalancerWrapper) RemoveSubConn(sc balancer.SubConn) {
-	// The RemoveSubConn() is handled in the run() goroutine, to avoid deadlock
-	// during switchBalancer() if the old balancer calls RemoveSubConn() in its
-	// Close().
-	ccb.updateCh.Put(sc)
+	// Before we switched the ccBalancerWrapper to use gracefulswitch.Balancer, it
+	// was required to handle the RemoveSubConn() method asynchronously by pushing
+	// the update onto the update channel. This was done to avoid a deadlock as
+	// switchBalancer() was holding cc.mu when calling Close() on the old
+	// balancer, which would in turn call RemoveSubConn().
+	//
+	// With the use of gracefulswitch.Balancer in ccBalancerWrapper, handling this
+	// asynchronously is probably not required anymore since the switchTo() method
+	// handles the balancer switch by pushing the update onto the channel.
+	// TODO(easwars): Handle this inline.
+	acbw, ok := sc.(*acBalancerWrapper)
+	if !ok {
+		return
+	}
+	ccb.updateCh.Put(&subConnUpdate{acbw: acbw})
 }
 
 func (ccb *ccBalancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver.Address) {
@@ -210,11 +339,6 @@ func (ccb *ccBalancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resol
 }
 
 func (ccb *ccBalancerWrapper) UpdateState(s balancer.State) {
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return
-	}
 	// Update picker before updating state.  Even though the ordering here does
 	// not matter, it can lead to multiple calls of Pick in the common start-up
 	// case where we wait for ready and then perform an RPC.  If the picker is

vendor/google.golang.org/grpc/channelz/channelz.go

@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package channelz exports internals of the channelz implementation as required
+// by other gRPC packages.
+//
+// The implementation of the channelz spec as defined in
+// https://github.com/grpc/proposal/blob/master/A14-channelz.md, is provided by
+// the `internal/channelz` package.
+//
+// Experimental
+//
+// Notice: All APIs in this package are experimental and may be removed in a
+// later release.
+package channelz
+
+import "google.golang.org/grpc/internal/channelz"
+
+// Identifier is an opaque identifier which uniquely identifies an entity in the
+// channelz database.
+type Identifier = channelz.Identifier

vendor/google.golang.org/grpc/clientconn.go

@@ -159,23 +159,20 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *
 		}
 	}()
 
-	if channelz.IsOn() {
-		if cc.dopts.channelzParentID != 0 {
-			cc.channelzID = channelz.RegisterChannel(&channelzChannel{cc}, cc.dopts.channelzParentID, target)
-			channelz.AddTraceEvent(logger, cc.channelzID, 0, &channelz.TraceEventDesc{
-				Desc:     "Channel Created",
-				Severity: channelz.CtInfo,
-				Parent: &channelz.TraceEventDesc{
-					Desc:     fmt.Sprintf("Nested Channel(id:%d) created", cc.channelzID),
-					Severity: channelz.CtInfo,
-				},
-			})
-		} else {
-			cc.channelzID = channelz.RegisterChannel(&channelzChannel{cc}, 0, target)
-			channelz.Info(logger, cc.channelzID, "Channel Created")
+	pid := cc.dopts.channelzParentID
+	cc.channelzID = channelz.RegisterChannel(&channelzChannel{cc}, pid, target)
+	ted := &channelz.TraceEventDesc{
+		Desc:     "Channel created",
+		Severity: channelz.CtInfo,
+	}
+	if cc.dopts.channelzParentID != nil {
+		ted.Parent = &channelz.TraceEventDesc{
+			Desc:     fmt.Sprintf("Nested Channel(id:%d) created", cc.channelzID.Int()),
+			Severity: channelz.CtInfo,
 		}
-		cc.csMgr.channelzID = cc.channelzID
 	}
+	channelz.AddTraceEvent(logger, cc.channelzID, 1, ted)
+	cc.csMgr.channelzID = cc.channelzID
 
 	if cc.dopts.copts.TransportCredentials == nil && cc.dopts.copts.CredsBundle == nil {
 		return nil, errNoTransportSecurity
@@ -281,7 +278,7 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *
 	if creds := cc.dopts.copts.TransportCredentials; creds != nil {
 		credsClone = creds.Clone()
 	}
-	cc.balancerBuildOpts = balancer.BuildOptions{
+	cc.balancerWrapper = newCCBalancerWrapper(cc, balancer.BuildOptions{
 		DialCreds:        credsClone,
 		CredsBundle:      cc.dopts.copts.CredsBundle,
 		Dialer:           cc.dopts.copts.Dialer,
@@ -289,7 +286,7 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *
 		CustomUserAgent:  cc.dopts.copts.UserAgent,
 		ChannelzParentID: cc.channelzID,
 		Target:           cc.parsedTarget,
-	}
+	})
 
 	// Build the resolver.
 	rWrapper, err := newCCResolverWrapper(cc, resolverBuilder)
@@ -398,7 +395,7 @@ type connectivityStateManager struct {
 	mu         sync.Mutex
 	state      connectivity.State
 	notifyChan chan struct{}
-	channelzID int64
+	channelzID *channelz.Identifier
 }
 
 // updateState updates the connectivity.State of ClientConn.
@@ -464,34 +461,36 @@ var _ ClientConnInterface = (*ClientConn)(nil)
 // handshakes. It also handles errors on established connections by
 // re-resolving the name and reconnecting.
 type ClientConn struct {
-	ctx    context.Context
-	cancel context.CancelFunc
-
-	target       string
-	parsedTarget resolver.Target
-	authority    string
-	dopts        dialOptions
-	csMgr        *connectivityStateManager
-
-	balancerBuildOpts balancer.BuildOptions
-	blockingpicker    *pickerWrapper
-
+	ctx    context.Context    // Initialized using the background context at dial time.
+	cancel context.CancelFunc // Cancelled on close.
+
+	// The following are initialized at dial time, and are read-only after that.
+	target          string               // User's dial target.
+	parsedTarget    resolver.Target      // See parseTargetAndFindResolver().
+	authority       string               // See determineAuthority().
+	dopts           dialOptions          // Default and user specified dial options.
+	channelzID      *channelz.Identifier // Channelz identifier for the channel.
+	balancerWrapper *ccBalancerWrapper   // Uses gracefulswitch.balancer underneath.
+
+	// The following provide their own synchronization, and therefore don't
+	// require cc.mu to be held to access them.
+	csMgr              *connectivityStateManager
+	blockingpicker     *pickerWrapper
 	safeConfigSelector iresolver.SafeConfigSelector
+	czData             *channelzData
+	retryThrottler     atomic.Value // Updated from service config.
 
-	mu              sync.RWMutex
-	resolverWrapper *ccResolverWrapper
-	sc              *ServiceConfig
-	conns           map[*addrConn]struct{}
-	// Keepalive parameter can be updated if a GoAway is received.
-	mkp             keepalive.ClientParameters
-	curBalancerName string
-	balancerWrapper *ccBalancerWrapper
-	retryThrottler  atomic.Value
-
+	// firstResolveEvent is used to track whether the name resolver sent us at
+	// least one update. RPCs block on this event.
 	firstResolveEvent *grpcsync.Event
 
-	channelzID int64 // channelz unique identification number
-	czData     *channelzData
+	// mu protects the following fields.
+	// TODO: split mu so the same mutex isn't used for everything.
+	mu              sync.RWMutex
+	resolverWrapper *ccResolverWrapper         // Initialized in Dial; cleared in Close.
+	sc              *ServiceConfig             // Latest service config received from the resolver.
+	conns           map[*addrConn]struct{}     // Set to nil on close.
+	mkp             keepalive.ClientParameters // May be updated upon receipt of a GoAway.
 
 	lceMu               sync.Mutex // protects lastConnectionError
 	lastConnectionError error
@@ -536,14 +535,7 @@ func (cc *ClientConn) GetState() connectivity.State {
 // Notice: This API is EXPERIMENTAL and may be changed or removed in a later
 // release.
 func (cc *ClientConn) Connect() {
-	cc.mu.Lock()
-	defer cc.mu.Unlock()
-	if cc.balancerWrapper != nil && cc.balancerWrapper.exitIdle() {
-		return
-	}
-	for ac := range cc.conns {
-		go ac.connect()
-	}
+	cc.balancerWrapper.exitIdle()
 }
 
 func (cc *ClientConn) scWatcher() {
@@ -623,9 +615,7 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error {
 		// with the new addresses.
 		cc.maybeApplyDefaultServiceConfig(nil)
 
-		if cc.balancerWrapper != nil {
-			cc.balancerWrapper.resolverError(err)
-		}
+		cc.balancerWrapper.resolverError(err)
 
 		// No addresses are valid with err set; return early.
 		cc.mu.Unlock()
@@ -653,16 +643,10 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error {
 			cc.applyServiceConfigAndBalancer(sc, configSelector, s.Addresses)
 		} else {
 			ret = balancer.ErrBadResolverState
-			if cc.balancerWrapper == nil {
-				var err error
-				if s.ServiceConfig.Err != nil {
-					err = status.Errorf(codes.Unavailable, "error parsing service config: %v", s.ServiceConfig.Err)
-				} else {
-					err = status.Errorf(codes.Unavailable, "illegal service config type: %T", s.ServiceConfig.Config)
-				}
-				cc.safeConfigSelector.UpdateConfigSelector(&defaultConfigSelector{cc.sc})
-				cc.blockingpicker.updatePicker(base.NewErrPicker(err))
-				cc.csMgr.updateState(connectivity.TransientFailure)
+			if cc.sc == nil {
+				// Apply the failing LB only if we haven't received valid service config
+				// from the name resolver in the past.
+				cc.applyFailingLB(s.ServiceConfig)
 				cc.mu.Unlock()
 				return ret
 			}
@@ -670,24 +654,12 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error {
 	}
 
 	var balCfg serviceconfig.LoadBalancingConfig
-	if cc.dopts.balancerBuilder == nil && cc.sc != nil && cc.sc.lbConfig != nil {
+	if cc.sc != nil && cc.sc.lbConfig != nil {
 		balCfg = cc.sc.lbConfig.cfg
 	}
-
-	cbn := cc.curBalancerName
 	bw := cc.balancerWrapper
 	cc.mu.Unlock()
-	if cbn != grpclbName {
-		// Filter any grpclb addresses since we don't have the grpclb balancer.
-		for i := 0; i < len(s.Addresses); {
-			if s.Addresses[i].Type == resolver.GRPCLB {
-				copy(s.Addresses[i:], s.Addresses[i+1:])
-				s.Addresses = s.Addresses[:len(s.Addresses)-1]
-				continue
-			}
-			i++
-		}
-	}
+
 	uccsErr := bw.updateClientConnState(&balancer.ClientConnState{ResolverState: s, BalancerConfig: balCfg})
 	if ret == nil {
 		ret = uccsErr // prefer ErrBadResolver state since any other error is
@@ -696,56 +668,28 @@ func (cc *ClientConn) updateResolverState(s resolver.State, err error) error {
 	return ret
 }
 
-// switchBalancer starts the switching from current balancer to the balancer
-// with the given name.
-//
-// It will NOT send the current address list to the new balancer. If needed,
-// caller of this function should send address list to the new balancer after
-// this function returns.
+// applyFailingLB is akin to configuring an LB policy on the channel which
+// always fails RPCs. Here, an actual LB policy is not configured, but an always
+// erroring picker is configured, which returns errors with information about
+// what was invalid in the received service config. A config selector with no
+// service config is configured, and the connectivity state of the channel is
+// set to TransientFailure.
 //
 // Caller must hold cc.mu.
-func (cc *ClientConn) switchBalancer(name string) {
-	if strings.EqualFold(cc.curBalancerName, name) {
-		return
-	}
-
-	channelz.Infof(logger, cc.channelzID, "ClientConn switching balancer to %q", name)
-	if cc.dopts.balancerBuilder != nil {
-		channelz.Info(logger, cc.channelzID, "ignoring balancer switching: Balancer DialOption used instead")
-		return
-	}
-	if cc.balancerWrapper != nil {
-		// Don't hold cc.mu while closing the balancers. The balancers may call
-		// methods that require cc.mu (e.g. cc.NewSubConn()). Holding the mutex
-		// would cause a deadlock in that case.
-		cc.mu.Unlock()
-		cc.balancerWrapper.close()
-		cc.mu.Lock()
-	}
-
-	builder := balancer.Get(name)
-	if builder == nil {
-		channelz.Warningf(logger, cc.channelzID, "Channel switches to new LB policy %q due to fallback from invalid balancer name", PickFirstBalancerName)
-		channelz.Infof(logger, cc.channelzID, "failed to get balancer builder for: %v, using pick_first instead", name)
-		builder = newPickfirstBuilder()
+func (cc *ClientConn) applyFailingLB(sc *serviceconfig.ParseResult) {
+	var err error
+	if sc.Err != nil {
+		err = status.Errorf(codes.Unavailable, "error parsing service config: %v", sc.Err)
 	} else {
-		channelz.Infof(logger, cc.channelzID, "Channel switches to new LB policy %q", name)
+		err = status.Errorf(codes.Unavailable, "illegal service config type: %T", sc.Config)
 	}
-
-	cc.curBalancerName = builder.Name()
-	cc.balancerWrapper = newCCBalancerWrapper(cc, builder, cc.balancerBuildOpts)
+	cc.safeConfigSelector.UpdateConfigSelector(&defaultConfigSelector{nil})
+	cc.blockingpicker.updatePicker(base.NewErrPicker(err))
+	cc.csMgr.updateState(connectivity.TransientFailure)
 }
 
 func (cc *ClientConn) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State, err error) {
-	cc.mu.Lock()
-	if cc.conns == nil {
-		cc.mu.Unlock()
-		return
-	}
-	// TODO(bar switching) send updates to all balancer wrappers when balancer
-	// gracefully switching is supported.
-	cc.balancerWrapper.handleSubConnStateChange(sc, s, err)
-	cc.mu.Unlock()
+	cc.balancerWrapper.updateSubConnState(sc, s, err)
 }
 
 // newAddrConn creates an addrConn for addrs and adds it to cc.conns.
@@ -768,17 +712,21 @@ func (cc *ClientConn) newAddrConn(addrs []resolver.Address, opts balancer.NewSub
 		cc.mu.Unlock()
 		return nil, ErrClientConnClosing
 	}
-	if channelz.IsOn() {
-		ac.channelzID = channelz.RegisterSubChannel(ac, cc.channelzID, "")
-		channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{
-			Desc:     "Subchannel Created",
-			Severity: channelz.CtInfo,
-			Parent: &channelz.TraceEventDesc{
-				Desc:     fmt.Sprintf("Subchannel(id:%d) created", ac.channelzID),
-				Severity: channelz.CtInfo,
-			},
-		})
+
+	var err error
+	ac.channelzID, err = channelz.RegisterSubChannel(ac, cc.channelzID, "")
+	if err != nil {
+		return nil, err
 	}
+	channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{
+		Desc:     "Subchannel created",
+		Severity: channelz.CtInfo,
+		Parent: &channelz.TraceEventDesc{
+			Desc:     fmt.Sprintf("Subchannel(id:%d) created", ac.channelzID.Int()),
+			Severity: channelz.CtInfo,
+		},
+	})
+
 	cc.conns[ac] = struct{}{}
 	cc.mu.Unlock()
 	return ac, nil
@@ -853,16 +801,31 @@ func (ac *addrConn) connect() error {
 	return nil
 }
 
+func equalAddresses(a, b []resolver.Address) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i, v := range a {
+		if !v.Equal(b[i]) {
+			return false
+		}
+	}
+	return true
+}
+
 // tryUpdateAddrs tries to update ac.addrs with the new addresses list.
 //
-// If ac is Connecting, it returns false. The caller should tear down the ac and
-// create a new one. Note that the backoff will be reset when this happens.
-//
 // If ac is TransientFailure, it updates ac.addrs and returns true. The updated
 // addresses will be picked up by retry in the next iteration after backoff.
 //
 // If ac is Shutdown or Idle, it updates ac.addrs and returns true.
 //
+// If the addresses is the same as the old list, it does nothing and returns
+// true.
+//
+// If ac is Connecting, it returns false. The caller should tear down the ac and
+// create a new one. Note that the backoff will be reset when this happens.
+//
 // If ac is Ready, it checks whether current connected address of ac is in the
 // new addrs list.
 //  - If true, it updates ac.addrs and returns true. The ac will keep using
@@ -879,6 +842,10 @@ func (ac *addrConn) tryUpdateAddrs(addrs []resolver.Address) bool {
 		return true
 	}
 
+	if equalAddresses(ac.addrs, addrs) {
+		return true
+	}
+
 	if ac.state == connectivity.Connecting {
 		return false
 	}
@@ -959,14 +926,10 @@ func (cc *ClientConn) healthCheckConfig() *healthCheckConfig {
 }
 
 func (cc *ClientConn) getTransport(ctx context.Context, failfast bool, method string) (transport.ClientTransport, func(balancer.DoneInfo), error) {
-	t, done, err := cc.blockingpicker.pick(ctx, failfast, balancer.PickInfo{
+	return cc.blockingpicker.pick(ctx, failfast, balancer.PickInfo{
 		Ctx:            ctx,
 		FullMethodName: method,
 	})
-	if err != nil {
-		return nil, nil, toRPCErr(err)
-	}
-	return t, done, nil
 }
 
 func (cc *ClientConn) applyServiceConfigAndBalancer(sc *ServiceConfig, configSelector iresolver.ConfigSelector, addrs []resolver.Address) {
@@ -991,35 +954,26 @@ func (cc *ClientConn) applyServiceConfigAndBalancer(sc *ServiceConfig, configSel
 		cc.retryThrottler.Store((*retryThrottler)(nil))
 	}
 
-	if cc.dopts.balancerBuilder == nil {
-		// Only look at balancer types and switch balancer if balancer dial
-		// option is not set.
-		var newBalancerName string
-		if cc.sc != nil && cc.sc.lbConfig != nil {
-			newBalancerName = cc.sc.lbConfig.name
-		} else {
-			var isGRPCLB bool
-			for _, a := range addrs {
-				if a.Type == resolver.GRPCLB {
-					isGRPCLB = true
-					break
-				}
-			}
-			if isGRPCLB {
-				newBalancerName = grpclbName
-			} else if cc.sc != nil && cc.sc.LB != nil {
-				newBalancerName = *cc.sc.LB
-			} else {
-				newBalancerName = PickFirstBalancerName
+	var newBalancerName string
+	if cc.sc != nil && cc.sc.lbConfig != nil {
+		newBalancerName = cc.sc.lbConfig.name
+	} else {
+		var isGRPCLB bool
+		for _, a := range addrs {
+			if a.Type == resolver.GRPCLB {
+				isGRPCLB = true
+				break
 			}
 		}
-		cc.switchBalancer(newBalancerName)
-	} else if cc.balancerWrapper == nil {
-		// Balancer dial option was set, and this is the first time handling
-		// resolved addresses. Build a balancer with dopts.balancerBuilder.
-		cc.curBalancerName = cc.dopts.balancerBuilder.Name()
-		cc.balancerWrapper = newCCBalancerWrapper(cc, cc.dopts.balancerBuilder, cc.balancerBuildOpts)
+		if isGRPCLB {
+			newBalancerName = grpclbName
+		} else if cc.sc != nil && cc.sc.LB != nil {
+			newBalancerName = *cc.sc.LB
+		} else {
+			newBalancerName = PickFirstBalancerName
+		}
 	}
+	cc.balancerWrapper.switchTo(newBalancerName)
 }
 
 func (cc *ClientConn) resolveNow(o resolver.ResolveNowOptions) {
@@ -1070,11 +1024,11 @@ func (cc *ClientConn) Close() error {
 	rWrapper := cc.resolverWrapper
 	cc.resolverWrapper = nil
 	bWrapper := cc.balancerWrapper
-	cc.balancerWrapper = nil
 	cc.mu.Unlock()
 
+	// The order of closing matters here since the balancer wrapper assumes the
+	// picker is closed before it is closed.
 	cc.blockingpicker.close()
-
 	if bWrapper != nil {
 		bWrapper.close()
 	}
@@ -1085,22 +1039,22 @@ func (cc *ClientConn) Close() error {
 	for ac := range conns {
 		ac.tearDown(ErrClientConnClosing)
 	}
-	if channelz.IsOn() {
-		ted := &channelz.TraceEventDesc{
-			Desc:     "Channel Deleted",
+	ted := &channelz.TraceEventDesc{
+		Desc:     "Channel deleted",
+		Severity: channelz.CtInfo,
+	}
+	if cc.dopts.channelzParentID != nil {
+		ted.Parent = &channelz.TraceEventDesc{
+			Desc:     fmt.Sprintf("Nested channel(id:%d) deleted", cc.channelzID.Int()),
 			Severity: channelz.CtInfo,
 		}
-		if cc.dopts.channelzParentID != 0 {
-			ted.Parent = &channelz.TraceEventDesc{
-				Desc:     fmt.Sprintf("Nested channel(id:%d) deleted", cc.channelzID),
-				Severity: channelz.CtInfo,
-			}
-		}
-		channelz.AddTraceEvent(logger, cc.channelzID, 0, ted)
-		// TraceEvent needs to be called before RemoveEntry, as TraceEvent may add trace reference to
-		// the entity being deleted, and thus prevent it from being deleted right away.
-		channelz.RemoveEntry(cc.channelzID)
 	}
+	channelz.AddTraceEvent(logger, cc.channelzID, 0, ted)
+	// TraceEvent needs to be called before RemoveEntry, as TraceEvent may add
+	// trace reference to the entity being deleted, and thus prevent it from being
+	// deleted right away.
+	channelz.RemoveEntry(cc.channelzID)
+
 	return nil
 }
 
@@ -1130,7 +1084,7 @@ type addrConn struct {
 	backoffIdx   int // Needs to be stateful for resetConnectBackoff.
 	resetBackoff chan struct{}
 
-	channelzID int64 // channelz unique identification number.
+	channelzID *channelz.Identifier
 	czData     *channelzData
 }
 
@@ -1284,6 +1238,7 @@ func (ac *addrConn) createTransport(addr resolver.Address, copts transport.Conne
 		ac.mu.Lock()
 		defer ac.mu.Unlock()
 		defer connClosed.Fire()
+		defer hcancel()
 		if !hcStarted || hctx.Err() != nil {
 			// We didn't start the health check or set the state to READY, so
 			// no need to do anything else here.
@@ -1294,7 +1249,6 @@ func (ac *addrConn) createTransport(addr resolver.Address, copts transport.Conne
 			// state, since there may be a new transport in this addrConn.
 			return
 		}
-		hcancel()
 		ac.transport = nil
 		// Refresh the name resolver
 		ac.cc.resolveNow(resolver.ResolveNowOptions{})
@@ -1312,14 +1266,13 @@ func (ac *addrConn) createTransport(addr resolver.Address, copts transport.Conne
 
 	connectCtx, cancel := context.WithDeadline(ac.ctx, connectDeadline)
 	defer cancel()
-	if channelz.IsOn() {
-		copts.ChannelzParentID = ac.channelzID
-	}
+	copts.ChannelzParentID = ac.channelzID
 
 	newTr, err := transport.NewClientTransport(connectCtx, ac.cc.ctx, addr, copts, func() { prefaceReceived.Fire() }, onGoAway, onClose)
 	if err != nil {
 		// newTr is either nil, or closed.
-		channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %v. Err: %v", addr, err)
+		hcancel()
+		channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %s. Err: %v", addr, err)
 		return err
 	}
 
@@ -1332,7 +1285,7 @@ func (ac *addrConn) createTransport(addr resolver.Address, copts transport.Conne
 		newTr.Close(transport.ErrConnClosing)
 		if connectCtx.Err() == context.DeadlineExceeded {
 			err := errors.New("failed to receive server preface within timeout")
-			channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %v: %v", addr, err)
+			channelz.Warningf(logger, ac.channelzID, "grpc: addrConn.createTransport failed to connect to %s: %v", addr, err)
 			return err
 		}
 		return nil
@@ -1497,19 +1450,18 @@ func (ac *addrConn) tearDown(err error) {
 		curTr.GracefulClose()
 		ac.mu.Lock()
 	}
-	if channelz.IsOn() {
-		channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{
-			Desc:     "Subchannel Deleted",
+	channelz.AddTraceEvent(logger, ac.channelzID, 0, &channelz.TraceEventDesc{
+		Desc:     "Subchannel deleted",
+		Severity: channelz.CtInfo,
+		Parent: &channelz.TraceEventDesc{
+			Desc:     fmt.Sprintf("Subchannel(id:%d) deleted", ac.channelzID.Int()),
 			Severity: channelz.CtInfo,
-			Parent: &channelz.TraceEventDesc{
-				Desc:     fmt.Sprintf("Subchanel(id:%d) deleted", ac.channelzID),
-				Severity: channelz.CtInfo,
-			},
-		})
-		// TraceEvent needs to be called before RemoveEntry, as TraceEvent may add trace reference to
-		// the entity being deleted, and thus prevent it from being deleted right away.
-		channelz.RemoveEntry(ac.channelzID)
-	}
+		},
+	})
+	// TraceEvent needs to be called before RemoveEntry, as TraceEvent may add
+	// trace reference to the entity being deleted, and thus prevent it from
+	// being deleted right away.
+	channelz.RemoveEntry(ac.channelzID)
 	ac.mu.Unlock()
 }
 

vendor/google.golang.org/grpc/dialoptions.go

@@ -20,12 +20,11 @@ package grpc
 
 import (
 	"context"
-	"fmt"
 	"net"
 	"time"
 
 	"google.golang.org/grpc/backoff"
-	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/channelz"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/internal"
@@ -45,19 +44,17 @@ type dialOptions struct {
 	chainUnaryInts  []UnaryClientInterceptor
 	chainStreamInts []StreamClientInterceptor
 
-	cp              Compressor
-	dc              Decompressor
-	bs              internalbackoff.Strategy
-	block           bool
-	returnLastError bool
-	timeout         time.Duration
-	scChan          <-chan ServiceConfig
-	authority       string
-	copts           transport.ConnectOptions
-	callOptions     []CallOption
-	// This is used by WithBalancerName dial option.
-	balancerBuilder             balancer.Builder
-	channelzParentID            int64
+	cp                          Compressor
+	dc                          Decompressor
+	bs                          internalbackoff.Strategy
+	block                       bool
+	returnLastError             bool
+	timeout                     time.Duration
+	scChan                      <-chan ServiceConfig
+	authority                   string
+	copts                       transport.ConnectOptions
+	callOptions                 []CallOption
+	channelzParentID            *channelz.Identifier
 	disableServiceConfig        bool
 	disableRetry                bool
 	disableHealthCheck          bool
@@ -195,25 +192,6 @@ func WithDecompressor(dc Decompressor) DialOption {
 	})
 }
 
-// WithBalancerName sets the balancer that the ClientConn will be initialized
-// with. Balancer registered with balancerName will be used. This function
-// panics if no balancer was registered by balancerName.
-//
-// The balancer cannot be overridden by balancer option specified by service
-// config.
-//
-// Deprecated: use WithDefaultServiceConfig and WithDisableServiceConfig
-// instead.  Will be removed in a future 1.x release.
-func WithBalancerName(balancerName string) DialOption {
-	builder := balancer.Get(balancerName)
-	if builder == nil {
-		panic(fmt.Sprintf("grpc.WithBalancerName: no balancer is registered for name %v", balancerName))
-	}
-	return newFuncDialOption(func(o *dialOptions) {
-		o.balancerBuilder = builder
-	})
-}
-
 // WithServiceConfig returns a DialOption which has a channel to read the
 // service configuration.
 //
@@ -304,8 +282,8 @@ func WithReturnConnectionError() DialOption {
 // WithCredentialsBundle or WithPerRPCCredentials) which require transport
 // security is incompatible and will cause grpc.Dial() to fail.
 //
-// Deprecated: use WithTransportCredentials and insecure.NewCredentials() instead.
-// Will be supported throughout 1.x.
+// Deprecated: use WithTransportCredentials and insecure.NewCredentials()
+// instead. Will be supported throughout 1.x.
 func WithInsecure() DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.copts.TransportCredentials = insecure.NewCredentials()
@@ -498,7 +476,7 @@ func WithAuthority(a string) DialOption {
 //
 // Notice: This API is EXPERIMENTAL and may be changed or removed in a
 // later release.
-func WithChannelzParentID(id int64) DialOption {
+func WithChannelzParentID(id *channelz.Identifier) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.channelzParentID = id
 	})

vendor/google.golang.org/grpc/encoding/encoding.go

@@ -108,7 +108,7 @@ var registeredCodecs = make(map[string]Codec)
 // more details.
 //
 // NOTE: this function must only be called during initialization time (i.e. in
-// an init() function), and is not thread-safe.  If multiple Compressors are
+// an init() function), and is not thread-safe.  If multiple Codecs are
 // registered with the same name, the one registered last will take effect.
 func RegisterCodec(codec Codec) {
 	if codec == nil {

vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go

@@ -0,0 +1,382 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package gracefulswitch implements a graceful switch load balancer.
+package gracefulswitch
+
+import (
+	"errors"
+	"fmt"
+	"sync"
+
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/balancer/base"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/resolver"
+)
+
+var errBalancerClosed = errors.New("gracefulSwitchBalancer is closed")
+var _ balancer.Balancer = (*Balancer)(nil)
+
+// NewBalancer returns a graceful switch Balancer.
+func NewBalancer(cc balancer.ClientConn, opts balancer.BuildOptions) *Balancer {
+	return &Balancer{
+		cc:    cc,
+		bOpts: opts,
+	}
+}
+
+// Balancer is a utility to gracefully switch from one balancer to
+// a new balancer. It implements the balancer.Balancer interface.
+type Balancer struct {
+	bOpts balancer.BuildOptions
+	cc    balancer.ClientConn
+
+	// mu protects the following fields and all fields within balancerCurrent
+	// and balancerPending. mu does not need to be held when calling into the
+	// child balancers, as all calls into these children happen only as a direct
+	// result of a call into the gracefulSwitchBalancer, which are also
+	// guaranteed to be synchronous. There is one exception: an UpdateState call
+	// from a child balancer when current and pending are populated can lead to
+	// calling Close() on the current. To prevent that racing with an
+	// UpdateSubConnState from the channel, we hold currentMu during Close and
+	// UpdateSubConnState calls.
+	mu              sync.Mutex
+	balancerCurrent *balancerWrapper
+	balancerPending *balancerWrapper
+	closed          bool // set to true when this balancer is closed
+
+	// currentMu must be locked before mu. This mutex guards against this
+	// sequence of events: UpdateSubConnState() called, finds the
+	// balancerCurrent, gives up lock, updateState comes in, causes Close() on
+	// balancerCurrent before the UpdateSubConnState is called on the
+	// balancerCurrent.
+	currentMu sync.Mutex
+}
+
+// swap swaps out the current lb with the pending lb and updates the ClientConn.
+// The caller must hold gsb.mu.
+func (gsb *Balancer) swap() {
+	gsb.cc.UpdateState(gsb.balancerPending.lastState)
+	cur := gsb.balancerCurrent
+	gsb.balancerCurrent = gsb.balancerPending
+	gsb.balancerPending = nil
+	go func() {
+		gsb.currentMu.Lock()
+		defer gsb.currentMu.Unlock()
+		cur.Close()
+	}()
+}
+
+// Helper function that checks if the balancer passed in is current or pending.
+// The caller must hold gsb.mu.
+func (gsb *Balancer) balancerCurrentOrPending(bw *balancerWrapper) bool {
+	return bw == gsb.balancerCurrent || bw == gsb.balancerPending
+}
+
+// SwitchTo initializes the graceful switch process, which completes based on
+// connectivity state changes on the current/pending balancer. Thus, the switch
+// process is not complete when this method returns. This method must be called
+// synchronously alongside the rest of the balancer.Balancer methods this
+// Graceful Switch Balancer implements.
+func (gsb *Balancer) SwitchTo(builder balancer.Builder) error {
+	gsb.mu.Lock()
+	if gsb.closed {
+		gsb.mu.Unlock()
+		return errBalancerClosed
+	}
+	bw := &balancerWrapper{
+		gsb: gsb,
+		lastState: balancer.State{
+			ConnectivityState: connectivity.Connecting,
+			Picker:            base.NewErrPicker(balancer.ErrNoSubConnAvailable),
+		},
+		subconns: make(map[balancer.SubConn]bool),
+	}
+	balToClose := gsb.balancerPending // nil if there is no pending balancer
+	if gsb.balancerCurrent == nil {
+		gsb.balancerCurrent = bw
+	} else {
+		gsb.balancerPending = bw
+	}
+	gsb.mu.Unlock()
+	balToClose.Close()
+	// This function takes a builder instead of a balancer because builder.Build
+	// can call back inline, and this utility needs to handle the callbacks.
+	newBalancer := builder.Build(bw, gsb.bOpts)
+	if newBalancer == nil {
+		// This is illegal and should never happen; we clear the balancerWrapper
+		// we were constructing if it happens to avoid a potential panic.
+		gsb.mu.Lock()
+		if gsb.balancerPending != nil {
+			gsb.balancerPending = nil
+		} else {
+			gsb.balancerCurrent = nil
+		}
+		gsb.mu.Unlock()
+		return balancer.ErrBadResolverState
+	}
+
+	// This write doesn't need to take gsb.mu because this field never gets read
+	// or written to on any calls from the current or pending. Calls from grpc
+	// to this balancer are guaranteed to be called synchronously, so this
+	// bw.Balancer field will never be forwarded to until this SwitchTo()
+	// function returns.
+	bw.Balancer = newBalancer
+	return nil
+}
+
+// Returns nil if the graceful switch balancer is closed.
+func (gsb *Balancer) latestBalancer() *balancerWrapper {
+	gsb.mu.Lock()
+	defer gsb.mu.Unlock()
+	if gsb.balancerPending != nil {
+		return gsb.balancerPending
+	}
+	return gsb.balancerCurrent
+}
+
+// UpdateClientConnState forwards the update to the latest balancer created.
+func (gsb *Balancer) UpdateClientConnState(state balancer.ClientConnState) error {
+	// The resolver data is only relevant to the most recent LB Policy.
+	balToUpdate := gsb.latestBalancer()
+	if balToUpdate == nil {
+		return errBalancerClosed
+	}
+	// Perform this call without gsb.mu to prevent deadlocks if the child calls
+	// back into the channel. The latest balancer can never be closed during a
+	// call from the channel, even without gsb.mu held.
+	return balToUpdate.UpdateClientConnState(state)
+}
+
+// ResolverError forwards the error to the latest balancer created.
+func (gsb *Balancer) ResolverError(err error) {
+	// The resolver data is only relevant to the most recent LB Policy.
+	balToUpdate := gsb.latestBalancer()
+	if balToUpdate == nil {
+		return
+	}
+	// Perform this call without gsb.mu to prevent deadlocks if the child calls
+	// back into the channel. The latest balancer can never be closed during a
+	// call from the channel, even without gsb.mu held.
+	balToUpdate.ResolverError(err)
+}
+
+// ExitIdle forwards the call to the latest balancer created.
+//
+// If the latest balancer does not support ExitIdle, the subConns are
+// re-connected to manually.
+func (gsb *Balancer) ExitIdle() {
+	balToUpdate := gsb.latestBalancer()
+	if balToUpdate == nil {
+		return
+	}
+	// There is no need to protect this read with a mutex, as the write to the
+	// Balancer field happens in SwitchTo, which completes before this can be
+	// called.
+	if ei, ok := balToUpdate.Balancer.(balancer.ExitIdler); ok {
+		ei.ExitIdle()
+		return
+	}
+	for sc := range balToUpdate.subconns {
+		sc.Connect()
+	}
+}
+
+// UpdateSubConnState forwards the update to the appropriate child.
+func (gsb *Balancer) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) {
+	gsb.currentMu.Lock()
+	defer gsb.currentMu.Unlock()
+	gsb.mu.Lock()
+	// Forward update to the appropriate child.  Even if there is a pending
+	// balancer, the current balancer should continue to get SubConn updates to
+	// maintain the proper state while the pending is still connecting.
+	var balToUpdate *balancerWrapper
+	if gsb.balancerCurrent != nil && gsb.balancerCurrent.subconns[sc] {
+		balToUpdate = gsb.balancerCurrent
+	} else if gsb.balancerPending != nil && gsb.balancerPending.subconns[sc] {
+		balToUpdate = gsb.balancerPending
+	}
+	gsb.mu.Unlock()
+	if balToUpdate == nil {
+		// SubConn belonged to a stale lb policy that has not yet fully closed,
+		// or the balancer was already closed.
+		return
+	}
+	balToUpdate.UpdateSubConnState(sc, state)
+}
+
+// Close closes any active child balancers.
+func (gsb *Balancer) Close() {
+	gsb.mu.Lock()
+	gsb.closed = true
+	currentBalancerToClose := gsb.balancerCurrent
+	gsb.balancerCurrent = nil
+	pendingBalancerToClose := gsb.balancerPending
+	gsb.balancerPending = nil
+	gsb.mu.Unlock()
+
+	currentBalancerToClose.Close()
+	pendingBalancerToClose.Close()
+}
+
+// balancerWrapper wraps a balancer.Balancer, and overrides some Balancer
+// methods to help cleanup SubConns created by the wrapped balancer.
+//
+// It implements the balancer.ClientConn interface and is passed down in that
+// capacity to the wrapped balancer. It maintains a set of subConns created by
+// the wrapped balancer and calls from the latter to create/update/remove
+// SubConns update this set before being forwarded to the parent ClientConn.
+// State updates from the wrapped balancer can result in invocation of the
+// graceful switch logic.
+type balancerWrapper struct {
+	balancer.Balancer
+	gsb *Balancer
+
+	lastState balancer.State
+	subconns  map[balancer.SubConn]bool // subconns created by this balancer
+}
+
+func (bw *balancerWrapper) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) {
+	if state.ConnectivityState == connectivity.Shutdown {
+		bw.gsb.mu.Lock()
+		delete(bw.subconns, sc)
+		bw.gsb.mu.Unlock()
+	}
+	// There is no need to protect this read with a mutex, as the write to the
+	// Balancer field happens in SwitchTo, which completes before this can be
+	// called.
+	bw.Balancer.UpdateSubConnState(sc, state)
+}
+
+// Close closes the underlying LB policy and removes the subconns it created. bw
+// must not be referenced via balancerCurrent or balancerPending in gsb when
+// called. gsb.mu must not be held.  Does not panic with a nil receiver.
+func (bw *balancerWrapper) Close() {
+	// before Close is called.
+	if bw == nil {
+		return
+	}
+	// There is no need to protect this read with a mutex, as Close() is
+	// impossible to be called concurrently with the write in SwitchTo(). The
+	// callsites of Close() for this balancer in Graceful Switch Balancer will
+	// never be called until SwitchTo() returns.
+	bw.Balancer.Close()
+	bw.gsb.mu.Lock()
+	for sc := range bw.subconns {
+		bw.gsb.cc.RemoveSubConn(sc)
+	}
+	bw.gsb.mu.Unlock()
+}
+
+func (bw *balancerWrapper) UpdateState(state balancer.State) {
+	// Hold the mutex for this entire call to ensure it cannot occur
+	// concurrently with other updateState() calls. This causes updates to
+	// lastState and calls to cc.UpdateState to happen atomically.
+	bw.gsb.mu.Lock()
+	defer bw.gsb.mu.Unlock()
+	bw.lastState = state
+
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		return
+	}
+
+	if bw == bw.gsb.balancerCurrent {
+		// In the case that the current balancer exits READY, and there is a pending
+		// balancer, you can forward the pending balancer's cached State up to
+		// ClientConn and swap the pending into the current. This is because there
+		// is no reason to gracefully switch from and keep using the old policy as
+		// the ClientConn is not connected to any backends.
+		if state.ConnectivityState != connectivity.Ready && bw.gsb.balancerPending != nil {
+			bw.gsb.swap()
+			return
+		}
+		// Even if there is a pending balancer waiting to be gracefully switched to,
+		// continue to forward current balancer updates to the Client Conn. Ignoring
+		// state + picker from the current would cause undefined behavior/cause the
+		// system to behave incorrectly from the current LB policies perspective.
+		// Also, the current LB is still being used by grpc to choose SubConns per
+		// RPC, and thus should use the most updated form of the current balancer.
+		bw.gsb.cc.UpdateState(state)
+		return
+	}
+	// This method is now dealing with a state update from the pending balancer.
+	// If the current balancer is currently in a state other than READY, the new
+	// policy can be swapped into place immediately. This is because there is no
+	// reason to gracefully switch from and keep using the old policy as the
+	// ClientConn is not connected to any backends.
+	if state.ConnectivityState != connectivity.Connecting || bw.gsb.balancerCurrent.lastState.ConnectivityState != connectivity.Ready {
+		bw.gsb.swap()
+	}
+}
+
+func (bw *balancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		bw.gsb.mu.Unlock()
+		return nil, fmt.Errorf("%T at address %p that called NewSubConn is deleted", bw, bw)
+	}
+	bw.gsb.mu.Unlock()
+
+	sc, err := bw.gsb.cc.NewSubConn(addrs, opts)
+	if err != nil {
+		return nil, err
+	}
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) { // balancer was closed during this call
+		bw.gsb.cc.RemoveSubConn(sc)
+		bw.gsb.mu.Unlock()
+		return nil, fmt.Errorf("%T at address %p that called NewSubConn is deleted", bw, bw)
+	}
+	bw.subconns[sc] = true
+	bw.gsb.mu.Unlock()
+	return sc, nil
+}
+
+func (bw *balancerWrapper) ResolveNow(opts resolver.ResolveNowOptions) {
+	// Ignore ResolveNow requests from anything other than the most recent
+	// balancer, because older balancers were already removed from the config.
+	if bw != bw.gsb.latestBalancer() {
+		return
+	}
+	bw.gsb.cc.ResolveNow(opts)
+}
+
+func (bw *balancerWrapper) RemoveSubConn(sc balancer.SubConn) {
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		bw.gsb.mu.Unlock()
+		return
+	}
+	bw.gsb.mu.Unlock()
+	bw.gsb.cc.RemoveSubConn(sc)
+}
+
+func (bw *balancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver.Address) {
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		bw.gsb.mu.Unlock()
+		return
+	}
+	bw.gsb.mu.Unlock()
+	bw.gsb.cc.UpdateAddresses(sc, addrs)
+}
+
+func (bw *balancerWrapper) Target() string {
+	return bw.gsb.cc.Target()
+}

vendor/google.golang.org/grpc/internal/binarylog/binarylog.go

@@ -31,7 +31,7 @@ import (
 // Logger is the global binary logger. It can be used to get binary logger for
 // each method.
 type Logger interface {
-	getMethodLogger(methodName string) *MethodLogger
+	GetMethodLogger(methodName string) MethodLogger
 }
 
 // binLogger is the global binary logger for the binary. One of this should be
@@ -49,17 +49,24 @@ func SetLogger(l Logger) {
 	binLogger = l
 }
 
+// GetLogger gets the binarg logger.
+//
+// Only call this at init time.
+func GetLogger() Logger {
+	return binLogger
+}
+
 // GetMethodLogger returns the methodLogger for the given methodName.
 //
 // methodName should be in the format of "/service/method".
 //
 // Each methodLogger returned by this method is a new instance. This is to
 // generate sequence id within the call.
-func GetMethodLogger(methodName string) *MethodLogger {
+func GetMethodLogger(methodName string) MethodLogger {
 	if binLogger == nil {
 		return nil
 	}
-	return binLogger.getMethodLogger(methodName)
+	return binLogger.GetMethodLogger(methodName)
 }
 
 func init() {
@@ -68,17 +75,29 @@ func init() {
 	binLogger = NewLoggerFromConfigString(configStr)
 }
 
-type methodLoggerConfig struct {
+// MethodLoggerConfig contains the setting for logging behavior of a method
+// logger. Currently, it contains the max length of header and message.
+type MethodLoggerConfig struct {
 	// Max length of header and message.
-	hdr, msg uint64
+	Header, Message uint64
+}
+
+// LoggerConfig contains the config for loggers to create method loggers.
+type LoggerConfig struct {
+	All      *MethodLoggerConfig
+	Services map[string]*MethodLoggerConfig
+	Methods  map[string]*MethodLoggerConfig
+
+	Blacklist map[string]struct{}
 }
 
 type logger struct {
-	all      *methodLoggerConfig
-	services map[string]*methodLoggerConfig
-	methods  map[string]*methodLoggerConfig
+	config LoggerConfig
+}
 
-	blacklist map[string]struct{}
+// NewLoggerFromConfig builds a logger with the given LoggerConfig.
+func NewLoggerFromConfig(config LoggerConfig) Logger {
+	return &logger{config: config}
 }
 
 // newEmptyLogger creates an empty logger. The map fields need to be filled in
@@ -88,57 +107,57 @@ func newEmptyLogger() *logger {
 }
 
 // Set method logger for "*".
-func (l *logger) setDefaultMethodLogger(ml *methodLoggerConfig) error {
-	if l.all != nil {
+func (l *logger) setDefaultMethodLogger(ml *MethodLoggerConfig) error {
+	if l.config.All != nil {
 		return fmt.Errorf("conflicting global rules found")
 	}
-	l.all = ml
+	l.config.All = ml
 	return nil
 }
 
 // Set method logger for "service/*".
 //
 // New methodLogger with same service overrides the old one.
-func (l *logger) setServiceMethodLogger(service string, ml *methodLoggerConfig) error {
-	if _, ok := l.services[service]; ok {
+func (l *logger) setServiceMethodLogger(service string, ml *MethodLoggerConfig) error {
+	if _, ok := l.config.Services[service]; ok {
 		return fmt.Errorf("conflicting service rules for service %v found", service)
 	}
-	if l.services == nil {
-		l.services = make(map[string]*methodLoggerConfig)
+	if l.config.Services == nil {
+		l.config.Services = make(map[string]*MethodLoggerConfig)
 	}
-	l.services[service] = ml
+	l.config.Services[service] = ml
 	return nil
 }
 
 // Set method logger for "service/method".
 //
 // New methodLogger with same method overrides the old one.
-func (l *logger) setMethodMethodLogger(method string, ml *methodLoggerConfig) error {
-	if _, ok := l.blacklist[method]; ok {
+func (l *logger) setMethodMethodLogger(method string, ml *MethodLoggerConfig) error {
+	if _, ok := l.config.Blacklist[method]; ok {
 		return fmt.Errorf("conflicting blacklist rules for method %v found", method)
 	}
-	if _, ok := l.methods[method]; ok {
+	if _, ok := l.config.Methods[method]; ok {
 		return fmt.Errorf("conflicting method rules for method %v found", method)
 	}
-	if l.methods == nil {
-		l.methods = make(map[string]*methodLoggerConfig)
+	if l.config.Methods == nil {
+		l.config.Methods = make(map[string]*MethodLoggerConfig)
 	}
-	l.methods[method] = ml
+	l.config.Methods[method] = ml
 	return nil
 }
 
 // Set blacklist method for "-service/method".
 func (l *logger) setBlacklist(method string) error {
-	if _, ok := l.blacklist[method]; ok {
+	if _, ok := l.config.Blacklist[method]; ok {
 		return fmt.Errorf("conflicting blacklist rules for method %v found", method)
 	}
-	if _, ok := l.methods[method]; ok {
+	if _, ok := l.config.Methods[method]; ok {
 		return fmt.Errorf("conflicting method rules for method %v found", method)
 	}
-	if l.blacklist == nil {
-		l.blacklist = make(map[string]struct{})
+	if l.config.Blacklist == nil {
+		l.config.Blacklist = make(map[string]struct{})
 	}
-	l.blacklist[method] = struct{}{}
+	l.config.Blacklist[method] = struct{}{}
 	return nil
 }
 
@@ -148,23 +167,23 @@ func (l *logger) setBlacklist(method string) error {
 //
 // Each methodLogger returned by this method is a new instance. This is to
 // generate sequence id within the call.
-func (l *logger) getMethodLogger(methodName string) *MethodLogger {
+func (l *logger) GetMethodLogger(methodName string) MethodLogger {
 	s, m, err := grpcutil.ParseMethod(methodName)
 	if err != nil {
 		grpclogLogger.Infof("binarylogging: failed to parse %q: %v", methodName, err)
 		return nil
 	}
-	if ml, ok := l.methods[s+"/"+m]; ok {
-		return newMethodLogger(ml.hdr, ml.msg)
+	if ml, ok := l.config.Methods[s+"/"+m]; ok {
+		return newMethodLogger(ml.Header, ml.Message)
 	}
-	if _, ok := l.blacklist[s+"/"+m]; ok {
+	if _, ok := l.config.Blacklist[s+"/"+m]; ok {
 		return nil
 	}
-	if ml, ok := l.services[s]; ok {
-		return newMethodLogger(ml.hdr, ml.msg)
+	if ml, ok := l.config.Services[s]; ok {
+		return newMethodLogger(ml.Header, ml.Message)
 	}
-	if l.all == nil {
+	if l.config.All == nil {
 		return nil
 	}
-	return newMethodLogger(l.all.hdr, l.all.msg)
+	return newMethodLogger(l.config.All.Header, l.config.All.Message)
 }

vendor/google.golang.org/grpc/internal/binarylog/env_config.go

@@ -89,7 +89,7 @@ func (l *logger) fillMethodLoggerWithConfigString(config string) error {
 		if err != nil {
 			return fmt.Errorf("invalid config: %q, %v", config, err)
 		}
-		if err := l.setDefaultMethodLogger(&methodLoggerConfig{hdr: hdr, msg: msg}); err != nil {
+		if err := l.setDefaultMethodLogger(&MethodLoggerConfig{Header: hdr, Message: msg}); err != nil {
 			return fmt.Errorf("invalid config: %v", err)
 		}
 		return nil
@@ -104,11 +104,11 @@ func (l *logger) fillMethodLoggerWithConfigString(config string) error {
 		return fmt.Errorf("invalid header/message length config: %q, %v", suffix, err)
 	}
 	if m == "*" {
-		if err := l.setServiceMethodLogger(s, &methodLoggerConfig{hdr: hdr, msg: msg}); err != nil {
+		if err := l.setServiceMethodLogger(s, &MethodLoggerConfig{Header: hdr, Message: msg}); err != nil {
 			return fmt.Errorf("invalid config: %v", err)
 		}
 	} else {
-		if err := l.setMethodMethodLogger(s+"/"+m, &methodLoggerConfig{hdr: hdr, msg: msg}); err != nil {
+		if err := l.setMethodMethodLogger(s+"/"+m, &MethodLoggerConfig{Header: hdr, Message: msg}); err != nil {
 			return fmt.Errorf("invalid config: %v", err)
 		}
 	}

vendor/google.golang.org/grpc/internal/binarylog/method_logger.go

@@ -48,7 +48,11 @@ func (g *callIDGenerator) reset() {
 var idGen callIDGenerator
 
 // MethodLogger is the sub-logger for each method.
-type MethodLogger struct {
+type MethodLogger interface {
+	Log(LogEntryConfig)
+}
+
+type methodLogger struct {
 	headerMaxLen, messageMaxLen uint64
 
 	callID          uint64
@@ -57,8 +61,8 @@ type MethodLogger struct {
 	sink Sink // TODO(blog): make this plugable.
 }
 
-func newMethodLogger(h, m uint64) *MethodLogger {
-	return &MethodLogger{
+func newMethodLogger(h, m uint64) *methodLogger {
+	return &methodLogger{
 		headerMaxLen:  h,
 		messageMaxLen: m,
 
@@ -69,8 +73,10 @@ func newMethodLogger(h, m uint64) *MethodLogger {
 	}
 }
 
-// Log creates a proto binary log entry, and logs it to the sink.
-func (ml *MethodLogger) Log(c LogEntryConfig) {
+// Build is an internal only method for building the proto message out of the
+// input event. It's made public to enable other library to reuse as much logic
+// in methodLogger as possible.
+func (ml *methodLogger) Build(c LogEntryConfig) *pb.GrpcLogEntry {
 	m := c.toProto()
 	timestamp, _ := ptypes.TimestampProto(time.Now())
 	m.Timestamp = timestamp
@@ -85,11 +91,15 @@ func (ml *MethodLogger) Log(c LogEntryConfig) {
 	case *pb.GrpcLogEntry_Message:
 		m.PayloadTruncated = ml.truncateMessage(pay.Message)
 	}
+	return m
+}
 
-	ml.sink.Write(m)
+// Log creates a proto binary log entry, and logs it to the sink.
+func (ml *methodLogger) Log(c LogEntryConfig) {
+	ml.sink.Write(ml.Build(c))
 }
 
-func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) {
+func (ml *methodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) {
 	if ml.headerMaxLen == maxUInt {
 		return false
 	}
@@ -119,7 +129,7 @@ func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) {
 	return truncated
 }
 
-func (ml *MethodLogger) truncateMessage(msgPb *pb.Message) (truncated bool) {
+func (ml *methodLogger) truncateMessage(msgPb *pb.Message) (truncated bool) {
 	if ml.messageMaxLen == maxUInt {
 		return false
 	}

vendor/google.golang.org/grpc/internal/channelz/funcs.go

@@ -25,6 +25,7 @@ package channelz
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"sort"
 	"sync"
@@ -184,54 +185,77 @@ func GetServer(id int64) *ServerMetric {
 	return db.get().GetServer(id)
 }
 
-// RegisterChannel registers the given channel c in channelz database with ref
-// as its reference name, and add it to the child list of its parent (identified
-// by pid). pid = 0 means no parent. It returns the unique channelz tracking id
-// assigned to this channel.
-func RegisterChannel(c Channel, pid int64, ref string) int64 {
+// RegisterChannel registers the given channel c in the channelz database with
+// ref as its reference name, and adds it to the child list of its parent
+// (identified by pid). pid == nil means no parent.
+//
+// Returns a unique channelz identifier assigned to this channel.
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterChannel(c Channel, pid *Identifier, ref string) *Identifier {
 	id := idGen.genID()
+	var parent int64
+	isTopChannel := true
+	if pid != nil {
+		isTopChannel = false
+		parent = pid.Int()
+	}
+
+	if !IsOn() {
+		return newIdentifer(RefChannel, id, pid)
+	}
+
 	cn := &channel{
 		refName:     ref,
 		c:           c,
 		subChans:    make(map[int64]string),
 		nestedChans: make(map[int64]string),
 		id:          id,
-		pid:         pid,
+		pid:         parent,
 		trace:       &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())},
 	}
-	if pid == 0 {
-		db.get().addChannel(id, cn, true, pid)
-	} else {
-		db.get().addChannel(id, cn, false, pid)
-	}
-	return id
+	db.get().addChannel(id, cn, isTopChannel, parent)
+	return newIdentifer(RefChannel, id, pid)
 }
 
-// RegisterSubChannel registers the given channel c in channelz database with ref
-// as its reference name, and add it to the child list of its parent (identified
-// by pid). It returns the unique channelz tracking id assigned to this subchannel.
-func RegisterSubChannel(c Channel, pid int64, ref string) int64 {
-	if pid == 0 {
-		logger.Error("a SubChannel's parent id cannot be 0")
-		return 0
+// RegisterSubChannel registers the given subChannel c in the channelz database
+// with ref as its reference name, and adds it to the child list of its parent
+// (identified by pid).
+//
+// Returns a unique channelz identifier assigned to this subChannel.
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterSubChannel(c Channel, pid *Identifier, ref string) (*Identifier, error) {
+	if pid == nil {
+		return nil, errors.New("a SubChannel's parent id cannot be nil")
 	}
 	id := idGen.genID()
+	if !IsOn() {
+		return newIdentifer(RefSubChannel, id, pid), nil
+	}
+
 	sc := &subChannel{
 		refName: ref,
 		c:       c,
 		sockets: make(map[int64]string),
 		id:      id,
-		pid:     pid,
+		pid:     pid.Int(),
 		trace:   &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())},
 	}
-	db.get().addSubChannel(id, sc, pid)
-	return id
+	db.get().addSubChannel(id, sc, pid.Int())
+	return newIdentifer(RefSubChannel, id, pid), nil
 }
 
 // RegisterServer registers the given server s in channelz database. It returns
 // the unique channelz tracking id assigned to this server.
-func RegisterServer(s Server, ref string) int64 {
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterServer(s Server, ref string) *Identifier {
 	id := idGen.genID()
+	if !IsOn() {
+		return newIdentifer(RefServer, id, nil)
+	}
+
 	svr := &server{
 		refName:       ref,
 		s:             s,
@@ -240,71 +264,92 @@ func RegisterServer(s Server, ref string) int64 {
 		id:            id,
 	}
 	db.get().addServer(id, svr)
-	return id
+	return newIdentifer(RefServer, id, nil)
 }
 
 // RegisterListenSocket registers the given listen socket s in channelz database
 // with ref as its reference name, and add it to the child list of its parent
 // (identified by pid). It returns the unique channelz tracking id assigned to
 // this listen socket.
-func RegisterListenSocket(s Socket, pid int64, ref string) int64 {
-	if pid == 0 {
-		logger.Error("a ListenSocket's parent id cannot be 0")
-		return 0
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterListenSocket(s Socket, pid *Identifier, ref string) (*Identifier, error) {
+	if pid == nil {
+		return nil, errors.New("a ListenSocket's parent id cannot be 0")
 	}
 	id := idGen.genID()
-	ls := &listenSocket{refName: ref, s: s, id: id, pid: pid}
-	db.get().addListenSocket(id, ls, pid)
-	return id
+	if !IsOn() {
+		return newIdentifer(RefListenSocket, id, pid), nil
+	}
+
+	ls := &listenSocket{refName: ref, s: s, id: id, pid: pid.Int()}
+	db.get().addListenSocket(id, ls, pid.Int())
+	return newIdentifer(RefListenSocket, id, pid), nil
 }
 
 // RegisterNormalSocket registers the given normal socket s in channelz database
-// with ref as its reference name, and add it to the child list of its parent
+// with ref as its reference name, and adds it to the child list of its parent
 // (identified by pid). It returns the unique channelz tracking id assigned to
 // this normal socket.
-func RegisterNormalSocket(s Socket, pid int64, ref string) int64 {
-	if pid == 0 {
-		logger.Error("a NormalSocket's parent id cannot be 0")
-		return 0
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterNormalSocket(s Socket, pid *Identifier, ref string) (*Identifier, error) {
+	if pid == nil {
+		return nil, errors.New("a NormalSocket's parent id cannot be 0")
 	}
 	id := idGen.genID()
-	ns := &normalSocket{refName: ref, s: s, id: id, pid: pid}
-	db.get().addNormalSocket(id, ns, pid)
-	return id
+	if !IsOn() {
+		return newIdentifer(RefNormalSocket, id, pid), nil
+	}
+
+	ns := &normalSocket{refName: ref, s: s, id: id, pid: pid.Int()}
+	db.get().addNormalSocket(id, ns, pid.Int())
+	return newIdentifer(RefNormalSocket, id, pid), nil
 }
 
 // RemoveEntry removes an entry with unique channelz tracking id to be id from
 // channelz database.
-func RemoveEntry(id int64) {
-	db.get().removeEntry(id)
+//
+// If channelz is not turned ON, this function is a no-op.
+func RemoveEntry(id *Identifier) {
+	if !IsOn() {
+		return
+	}
+	db.get().removeEntry(id.Int())
 }
 
-// TraceEventDesc is what the caller of AddTraceEvent should provide to describe the event to be added
-// to the channel trace.
-// The Parent field is optional. It is used for event that will be recorded in the entity's parent
-// trace also.
+// TraceEventDesc is what the caller of AddTraceEvent should provide to describe
+// the event to be added to the channel trace.
+//
+// The Parent field is optional. It is used for an event that will be recorded
+// in the entity's parent trace.
 type TraceEventDesc struct {
 	Desc     string
 	Severity Severity
 	Parent   *TraceEventDesc
 }
 
-// AddTraceEvent adds trace related to the entity with specified id, using the provided TraceEventDesc.
-func AddTraceEvent(l grpclog.DepthLoggerV2, id int64, depth int, desc *TraceEventDesc) {
-	for d := desc; d != nil; d = d.Parent {
-		switch d.Severity {
-		case CtUnknown, CtInfo:
-			l.InfoDepth(depth+1, d.Desc)
-		case CtWarning:
-			l.WarningDepth(depth+1, d.Desc)
-		case CtError:
-			l.ErrorDepth(depth+1, d.Desc)
-		}
+// AddTraceEvent adds trace related to the entity with specified id, using the
+// provided TraceEventDesc.
+//
+// If channelz is not turned ON, this will simply log the event descriptions.
+func AddTraceEvent(l grpclog.DepthLoggerV2, id *Identifier, depth int, desc *TraceEventDesc) {
+	// Log only the trace description associated with the bottom most entity.
+	switch desc.Severity {
+	case CtUnknown, CtInfo:
+		l.InfoDepth(depth+1, withParens(id)+desc.Desc)
+	case CtWarning:
+		l.WarningDepth(depth+1, withParens(id)+desc.Desc)
+	case CtError:
+		l.ErrorDepth(depth+1, withParens(id)+desc.Desc)
 	}
+
 	if getMaxTraceEntry() == 0 {
 		return
 	}
-	db.get().traceEvent(id, desc)
+	if IsOn() {
+		db.get().traceEvent(id.Int(), desc)
+	}
 }
 
 // channelMap is the storage data structure for channelz.

vendor/google.golang.org/grpc/internal/channelz/id.go

@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package channelz
+
+import "fmt"
+
+// Identifier is an opaque identifier which uniquely identifies an entity in the
+// channelz database.
+type Identifier struct {
+	typ RefChannelType
+	id  int64
+	str string
+	pid *Identifier
+}
+
+// Type returns the entity type corresponding to id.
+func (id *Identifier) Type() RefChannelType {
+	return id.typ
+}
+
+// Int returns the integer identifier corresponding to id.
+func (id *Identifier) Int() int64 {
+	return id.id
+}
+
+// String returns a string representation of the entity corresponding to id.
+//
+// This includes some information about the parent as well. Examples:
+// Top-level channel: [Channel #channel-number]
+// Nested channel:    [Channel #parent-channel-number Channel #channel-number]
+// Sub channel:       [Channel #parent-channel SubChannel #subchannel-number]
+func (id *Identifier) String() string {
+	return id.str
+}
+
+// Equal returns true if other is the same as id.
+func (id *Identifier) Equal(other *Identifier) bool {
+	if (id != nil) != (other != nil) {
+		return false
+	}
+	if id == nil && other == nil {
+		return true
+	}
+	return id.typ == other.typ && id.id == other.id && id.pid == other.pid
+}
+
+// NewIdentifierForTesting returns a new opaque identifier to be used only for
+// testing purposes.
+func NewIdentifierForTesting(typ RefChannelType, id int64, pid *Identifier) *Identifier {
+	return newIdentifer(typ, id, pid)
+}
+
+func newIdentifer(typ RefChannelType, id int64, pid *Identifier) *Identifier {
+	str := fmt.Sprintf("%s #%d", typ, id)
+	if pid != nil {
+		str = fmt.Sprintf("%s %s", pid, str)
+	}
+	return &Identifier{typ: typ, id: id, str: str, pid: pid}
+}

vendor/google.golang.org/grpc/internal/channelz/logging.go

@@ -26,77 +26,54 @@ import (
 
 var logger = grpclog.Component("channelz")
 
+func withParens(id *Identifier) string {
+	return "[" + id.String() + "] "
+}
+
 // Info logs and adds a trace event if channelz is on.
-func Info(l grpclog.DepthLoggerV2, id int64, args ...interface{}) {
-	if IsOn() {
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
-			Desc:     fmt.Sprint(args...),
-			Severity: CtInfo,
-		})
-	} else {
-		l.InfoDepth(1, args...)
-	}
+func Info(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprint(args...),
+		Severity: CtInfo,
+	})
 }
 
 // Infof logs and adds a trace event if channelz is on.
-func Infof(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) {
-	msg := fmt.Sprintf(format, args...)
-	if IsOn() {
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
-			Desc:     msg,
-			Severity: CtInfo,
-		})
-	} else {
-		l.InfoDepth(1, msg)
-	}
+func Infof(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprintf(format, args...),
+		Severity: CtInfo,
+	})
 }
 
 // Warning logs and adds a trace event if channelz is on.
-func Warning(l grpclog.DepthLoggerV2, id int64, args ...interface{}) {
-	if IsOn() {
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
-			Desc:     fmt.Sprint(args...),
-			Severity: CtWarning,
-		})
-	} else {
-		l.WarningDepth(1, args...)
-	}
+func Warning(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprint(args...),
+		Severity: CtWarning,
+	})
 }
 
 // Warningf logs and adds a trace event if channelz is on.
-func Warningf(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) {
-	msg := fmt.Sprintf(format, args...)
-	if IsOn() {
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
-			Desc:     msg,
-			Severity: CtWarning,
-		})
-	} else {
-		l.WarningDepth(1, msg)
-	}
+func Warningf(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprintf(format, args...),
+		Severity: CtWarning,
+	})
 }
 
 // Error logs and adds a trace event if channelz is on.
-func Error(l grpclog.DepthLoggerV2, id int64, args ...interface{}) {
-	if IsOn() {
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
-			Desc:     fmt.Sprint(args...),
-			Severity: CtError,
-		})
-	} else {
-		l.ErrorDepth(1, args...)
-	}
+func Error(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprint(args...),
+		Severity: CtError,
+	})
 }
 
 // Errorf logs and adds a trace event if channelz is on.
-func Errorf(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) {
-	msg := fmt.Sprintf(format, args...)
-	if IsOn() {
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
-			Desc:     msg,
-			Severity: CtError,
-		})
-	} else {
-		l.ErrorDepth(1, msg)
-	}
+func Errorf(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprintf(format, args...),
+		Severity: CtError,
+	})
 }

vendor/google.golang.org/grpc/internal/channelz/types.go

@@ -686,12 +686,33 @@ const (
 type RefChannelType int
 
 const (
+	// RefUnknown indicates an unknown entity type, the zero value for this type.
+	RefUnknown RefChannelType = iota
 	// RefChannel indicates the referenced entity is a Channel.
-	RefChannel RefChannelType = iota
+	RefChannel
 	// RefSubChannel indicates the referenced entity is a SubChannel.
 	RefSubChannel
+	// RefServer indicates the referenced entity is a Server.
+	RefServer
+	// RefListenSocket indicates the referenced entity is a ListenSocket.
+	RefListenSocket
+	// RefNormalSocket indicates the referenced entity is a NormalSocket.
+	RefNormalSocket
 )
 
+var refChannelTypeToString = map[RefChannelType]string{
+	RefUnknown:      "Unknown",
+	RefChannel:      "Channel",
+	RefSubChannel:   "SubChannel",
+	RefServer:       "Server",
+	RefListenSocket: "ListenSocket",
+	RefNormalSocket: "NormalSocket",
+}
+
+func (r RefChannelType) String() string {
+	return refChannelTypeToString[r]
+}
+
 func (c *channelTrace) dumpData() *ChannelTrace {
 	c.mu.Lock()
 	ct := &ChannelTrace{EventNum: c.eventCount, CreationTime: c.createdTime}

vendor/google.golang.org/grpc/internal/googlecloud/googlecloud.go

@@ -20,13 +20,6 @@
 package googlecloud
 
 import (
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"regexp"
 	"runtime"
 	"strings"
 	"sync"
@@ -35,43 +28,9 @@ import (
 	internalgrpclog "google.golang.org/grpc/internal/grpclog"
 )
 
-const (
-	linuxProductNameFile     = "/sys/class/dmi/id/product_name"
-	windowsCheckCommand      = "powershell.exe"
-	windowsCheckCommandArgs  = "Get-WmiObject -Class Win32_BIOS"
-	powershellOutputFilter   = "Manufacturer"
-	windowsManufacturerRegex = ":(.*)"
-
-	logPrefix = "[googlecloud]"
-)
+const logPrefix = "[googlecloud]"
 
 var (
-	// The following two variables will be reassigned in tests.
-	runningOS          = runtime.GOOS
-	manufacturerReader = func() (io.Reader, error) {
-		switch runningOS {
-		case "linux":
-			return os.Open(linuxProductNameFile)
-		case "windows":
-			cmd := exec.Command(windowsCheckCommand, windowsCheckCommandArgs)
-			out, err := cmd.Output()
-			if err != nil {
-				return nil, err
-			}
-			for _, line := range strings.Split(strings.TrimSuffix(string(out), "\n"), "\n") {
-				if strings.HasPrefix(line, powershellOutputFilter) {
-					re := regexp.MustCompile(windowsManufacturerRegex)
-					name := re.FindString(line)
-					name = strings.TrimLeft(name, ":")
-					return strings.NewReader(name), nil
-				}
-			}
-			return nil, errors.New("cannot determine the machine's manufacturer")
-		default:
-			return nil, fmt.Errorf("%s is not supported", runningOS)
-		}
-	}
-
 	vmOnGCEOnce sync.Once
 	vmOnGCE     bool
 
@@ -84,21 +43,21 @@ var (
 // package. We keep this to avoid depending on the cloud library module.
 func OnGCE() bool {
 	vmOnGCEOnce.Do(func() {
-		vmOnGCE = isRunningOnGCE()
+		mf, err := manufacturer()
+		if err != nil {
+			logger.Infof("failed to read manufacturer, setting onGCE=false: %v")
+			return
+		}
+		vmOnGCE = isRunningOnGCE(mf, runtime.GOOS)
 	})
 	return vmOnGCE
 }
 
-// isRunningOnGCE checks whether the local system, without doing a network request is
+// isRunningOnGCE checks whether the local system, without doing a network request, is
 // running on GCP.
-func isRunningOnGCE() bool {
-	manufacturer, err := readManufacturer()
-	if err != nil {
-		logger.Infof("failed to read manufacturer %v, returning OnGCE=false", err)
-		return false
-	}
+func isRunningOnGCE(manufacturer []byte, goos string) bool {
 	name := string(manufacturer)
-	switch runningOS {
+	switch goos {
 	case "linux":
 		name = strings.TrimSpace(name)
 		return name == "Google" || name == "Google Compute Engine"
@@ -111,18 +70,3 @@ func isRunningOnGCE() bool {
 		return false
 	}
 }
-
-func readManufacturer() ([]byte, error) {
-	reader, err := manufacturerReader()
-	if err != nil {
-		return nil, err
-	}
-	if reader == nil {
-		return nil, errors.New("got nil reader")
-	}
-	manufacturer, err := ioutil.ReadAll(reader)
-	if err != nil {
-		return nil, fmt.Errorf("failed reading %v: %v", linuxProductNameFile, err)
-	}
-	return manufacturer, nil
-}

vendor/google.golang.org/grpc/internal/googlecloud/manufacturer.go

@@ -0,0 +1,26 @@
+//go:build !(linux || windows)
+// +build !linux,!windows
+
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package googlecloud
+
+func manufacturer() ([]byte, error) {
+	return nil, nil
+}

vendor/google.golang.org/grpc/internal/googlecloud/manufacturer_linux.go

@@ -0,0 +1,27 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package googlecloud
+
+import "io/ioutil"
+
+const linuxProductNameFile = "/sys/class/dmi/id/product_name"
+
+func manufacturer() ([]byte, error) {
+	return ioutil.ReadFile(linuxProductNameFile)
+}

vendor/google.golang.org/grpc/internal/googlecloud/manufacturer_windows.go

@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package googlecloud
+
+import (
+	"errors"
+	"os/exec"
+	"regexp"
+	"strings"
+)
+
+const (
+	windowsCheckCommand      = "powershell.exe"
+	windowsCheckCommandArgs  = "Get-WmiObject -Class Win32_BIOS"
+	powershellOutputFilter   = "Manufacturer"
+	windowsManufacturerRegex = ":(.*)"
+)
+
+func manufacturer() ([]byte, error) {
+	cmd := exec.Command(windowsCheckCommand, windowsCheckCommandArgs)
+	out, err := cmd.Output()
+	if err != nil {
+		return nil, err
+	}
+	for _, line := range strings.Split(strings.TrimSuffix(string(out), "\n"), "\n") {
+		if strings.HasPrefix(line, powershellOutputFilter) {
+			re := regexp.MustCompile(windowsManufacturerRegex)
+			name := re.FindString(line)
+			name = strings.TrimLeft(name, ":")
+			return []byte(name), nil
+		}
+	}
+	return nil, errors.New("cannot determine the machine's manufacturer")
+}

vendor/google.golang.org/grpc/internal/internal.go

@@ -85,3 +85,9 @@ const (
 	// that supports backend returned by grpclb balancer.
 	CredsBundleModeBackendFromBalancer = "backend-from-balancer"
 )
+
+// RLSLoadBalancingPolicyName is the name of the RLS LB policy.
+//
+// It currently has an experimental suffix which would be removed once
+// end-to-end testing of the policy is completed.
+const RLSLoadBalancingPolicyName = "rls_experimental"

vendor/google.golang.org/grpc/internal/metadata/metadata.go

@@ -22,6 +22,9 @@
 package metadata
 
 import (
+	"fmt"
+	"strings"
+
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/resolver"
 )
@@ -72,3 +75,46 @@ func Set(addr resolver.Address, md metadata.MD) resolver.Address {
 	addr.Attributes = addr.Attributes.WithValue(mdKey, mdValue(md))
 	return addr
 }
+
+// Validate returns an error if the input md contains invalid keys or values.
+//
+// If the header is not a pseudo-header, the following items are checked:
+// - header names must contain one or more characters from this set [0-9 a-z _ - .].
+// - if the header-name ends with a "-bin" suffix, no validation of the header value is performed.
+// - otherwise, the header value must contain one or more characters from the set [%x20-%x7E].
+func Validate(md metadata.MD) error {
+	for k, vals := range md {
+		// pseudo-header will be ignored
+		if k[0] == ':' {
+			continue
+		}
+		// check key, for i that saving a conversion if not using for range
+		for i := 0; i < len(k); i++ {
+			r := k[i]
+			if !(r >= 'a' && r <= 'z') && !(r >= '0' && r <= '9') && r != '.' && r != '-' && r != '_' {
+				return fmt.Errorf("header key %q contains illegal characters not in [0-9a-z-_.]", k)
+			}
+		}
+		if strings.HasSuffix(k, "-bin") {
+			continue
+		}
+		// check value
+		for _, val := range vals {
+			if hasNotPrintable(val) {
+				return fmt.Errorf("header key %q contains value with non-printable ASCII characters", k)
+			}
+		}
+	}
+	return nil
+}
+
+// hasNotPrintable return true if msg contains any characters which are not in %x20-%x7E
+func hasNotPrintable(msg string) bool {
+	// for i that saving a conversion if not using for range
+	for i := 0; i < len(msg); i++ {
+		if msg[i] < 0x20 || msg[i] > 0x7E {
+			return true
+		}
+	}
+	return false
+}

vendor/google.golang.org/grpc/internal/pretty/pretty.go

@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package pretty defines helper functions to pretty-print structs for logging.
+package pretty
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+
+	"github.com/golang/protobuf/jsonpb"
+	protov1 "github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/encoding/protojson"
+	protov2 "google.golang.org/protobuf/proto"
+)
+
+const jsonIndent = "  "
+
+// ToJSON marshals the input into a json string.
+//
+// If marshal fails, it falls back to fmt.Sprintf("%+v").
+func ToJSON(e interface{}) string {
+	switch ee := e.(type) {
+	case protov1.Message:
+		mm := jsonpb.Marshaler{Indent: jsonIndent}
+		ret, err := mm.MarshalToString(ee)
+		if err != nil {
+			// This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2
+			// messages are not imported, and this will fail because the message
+			// is not found.
+			return fmt.Sprintf("%+v", ee)
+		}
+		return ret
+	case protov2.Message:
+		mm := protojson.MarshalOptions{
+			Multiline: true,
+			Indent:    jsonIndent,
+		}
+		ret, err := mm.Marshal(ee)
+		if err != nil {
+			// This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2
+			// messages are not imported, and this will fail because the message
+			// is not found.
+			return fmt.Sprintf("%+v", ee)
+		}
+		return string(ret)
+	default:
+		ret, err := json.MarshalIndent(ee, "", jsonIndent)
+		if err != nil {
+			return fmt.Sprintf("%+v", ee)
+		}
+		return string(ret)
+	}
+}
+
+// FormatJSON formats the input json bytes with indentation.
+//
+// If Indent fails, it returns the unchanged input as string.
+func FormatJSON(b []byte) string {
+	var out bytes.Buffer
+	err := json.Indent(&out, b, "", jsonIndent)
+	if err != nil {
+		return string(b)
+	}
+	return out.String()
+}

vendor/google.golang.org/grpc/internal/transport/controlbuf.go

@@ -137,6 +137,7 @@ type earlyAbortStream struct {
 	streamID       uint32
 	contentSubtype string
 	status         *status.Status
+	rst            bool
 }
 
 func (*earlyAbortStream) isTransportResponseFrame() bool { return false }
@@ -786,6 +787,11 @@ func (l *loopyWriter) earlyAbortStreamHandler(eas *earlyAbortStream) error {
 	if err := l.writeHeader(eas.streamID, true, headerFields, nil); err != nil {
 		return err
 	}
+	if eas.rst {
+		if err := l.framer.fr.WriteRSTStream(eas.streamID, http2.ErrCodeNo); err != nil {
+			return err
+		}
+	}
 	return nil
 }
 

vendor/google.golang.org/grpc/internal/transport/http2_client.go

@@ -132,7 +132,7 @@ type http2Client struct {
 	kpDormant bool
 
 	// Fields below are for channelz metric collection.
-	channelzID int64 // channelz unique identification number
+	channelzID *channelz.Identifier
 	czData     *channelzData
 
 	onGoAway func(GoAwayReason)
@@ -351,8 +351,9 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 		}
 		t.statsHandler.HandleConn(t.ctx, connBegin)
 	}
-	if channelz.IsOn() {
-		t.channelzID = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, fmt.Sprintf("%s -> %s", t.localAddr, t.remoteAddr))
+	t.channelzID, err = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, fmt.Sprintf("%s -> %s", t.localAddr, t.remoteAddr))
+	if err != nil {
+		return nil, err
 	}
 	if t.keepaliveEnabled {
 		t.kpDormancyCond = sync.NewCond(&t.mu)
@@ -630,8 +631,8 @@ func (t *http2Client) getCallAuthData(ctx context.Context, audience string, call
 // the wire.  However, there are two notable exceptions:
 //
 // 1. If the stream headers violate the max header list size allowed by the
-//    server.  In this case there is no reason to retry at all, as it is
-//    assumed the RPC would continue to fail on subsequent attempts.
+//    server.  It's possible this could succeed on another transport, even if
+//    it's unlikely, but do not transparently retry.
 // 2. If the credentials errored when requesting their headers.  In this case,
 //    it's possible a retry can fix the problem, but indefinitely transparently
 //    retrying is not appropriate as it is likely the credentials, if they can
@@ -639,8 +640,7 @@ func (t *http2Client) getCallAuthData(ctx context.Context, audience string, call
 type NewStreamError struct {
 	Err error
 
-	DoNotRetry            bool
-	DoNotTransparentRetry bool
+	AllowTransparentRetry bool
 }
 
 func (e NewStreamError) Error() string {
@@ -649,11 +649,11 @@ func (e NewStreamError) Error() string {
 
 // NewStream creates a stream and registers it into the transport as "active"
 // streams.  All non-nil errors returned will be *NewStreamError.
-func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Stream, err error) {
+func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (*Stream, error) {
 	ctx = peer.NewContext(ctx, t.getPeer())
 	headerFields, err := t.createHeaderFields(ctx, callHdr)
 	if err != nil {
-		return nil, &NewStreamError{Err: err, DoNotTransparentRetry: true}
+		return nil, &NewStreamError{Err: err, AllowTransparentRetry: false}
 	}
 	s := t.newStream(ctx, callHdr)
 	cleanup := func(err error) {
@@ -753,13 +753,14 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea
 			return true
 		}, hdr)
 		if err != nil {
-			return nil, &NewStreamError{Err: err}
+			// Connection closed.
+			return nil, &NewStreamError{Err: err, AllowTransparentRetry: true}
 		}
 		if success {
 			break
 		}
 		if hdrListSizeErr != nil {
-			return nil, &NewStreamError{Err: hdrListSizeErr, DoNotRetry: true}
+			return nil, &NewStreamError{Err: hdrListSizeErr}
 		}
 		firstTry = false
 		select {
@@ -767,9 +768,9 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea
 		case <-ctx.Done():
 			return nil, &NewStreamError{Err: ContextErr(ctx.Err())}
 		case <-t.goAway:
-			return nil, &NewStreamError{Err: errStreamDrain}
+			return nil, &NewStreamError{Err: errStreamDrain, AllowTransparentRetry: true}
 		case <-t.ctx.Done():
-			return nil, &NewStreamError{Err: ErrConnClosing}
+			return nil, &NewStreamError{Err: ErrConnClosing, AllowTransparentRetry: true}
 		}
 	}
 	if t.statsHandler != nil {
@@ -898,9 +899,7 @@ func (t *http2Client) Close(err error) {
 	t.controlBuf.finish()
 	t.cancel()
 	t.conn.Close()
-	if channelz.IsOn() {
-		channelz.RemoveEntry(t.channelzID)
-	}
+	channelz.RemoveEntry(t.channelzID)
 	// Append info about previous goaways if there were any, since this may be important
 	// for understanding the root cause for this connection to be closed.
 	_, goAwayDebugMessage := t.GetGoAwayReason()

vendor/google.golang.org/grpc/internal/transport/http2_server.go

@@ -21,7 +21,6 @@ package transport
 import (
 	"bytes"
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"math"
@@ -36,6 +35,7 @@ import (
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/hpack"
 	"google.golang.org/grpc/internal/grpcutil"
+	"google.golang.org/grpc/internal/syscall"
 
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
@@ -52,10 +52,10 @@ import (
 var (
 	// ErrIllegalHeaderWrite indicates that setting header is illegal because of
 	// the stream's state.
-	ErrIllegalHeaderWrite = errors.New("transport: the stream is done or WriteHeader was already called")
+	ErrIllegalHeaderWrite = status.Error(codes.Internal, "transport: SendHeader called multiple times")
 	// ErrHeaderListSizeLimitViolation indicates that the header list size is larger
 	// than the limit set by peer.
-	ErrHeaderListSizeLimitViolation = errors.New("transport: trying to send header list size larger than the limit set by peer")
+	ErrHeaderListSizeLimitViolation = status.Error(codes.Internal, "transport: trying to send header list size larger than the limit set by peer")
 )
 
 // serverConnectionCounter counts the number of connections a server has seen
@@ -117,7 +117,7 @@ type http2Server struct {
 	idle time.Time
 
 	// Fields below are for channelz metric collection.
-	channelzID int64 // channelz unique identification number
+	channelzID *channelz.Identifier
 	czData     *channelzData
 	bufferPool *bufferPool
 
@@ -231,6 +231,11 @@ func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport,
 	if kp.Timeout == 0 {
 		kp.Timeout = defaultServerKeepaliveTimeout
 	}
+	if kp.Time != infinity {
+		if err = syscall.SetTCPUserTimeout(conn, kp.Timeout); err != nil {
+			return nil, connectionErrorf(false, err, "transport: failed to set TCP_USER_TIMEOUT: %v", err)
+		}
+	}
 	kep := config.KeepalivePolicy
 	if kep.MinTime == 0 {
 		kep.MinTime = defaultKeepalivePolicyMinTime
@@ -275,12 +280,12 @@ func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport,
 		connBegin := &stats.ConnBegin{}
 		t.stats.HandleConn(t.ctx, connBegin)
 	}
-	if channelz.IsOn() {
-		t.channelzID = channelz.RegisterNormalSocket(t, config.ChannelzParentID, fmt.Sprintf("%s -> %s", t.remoteAddr, t.localAddr))
+	t.channelzID, err = channelz.RegisterNormalSocket(t, config.ChannelzParentID, fmt.Sprintf("%s -> %s", t.remoteAddr, t.localAddr))
+	if err != nil {
+		return nil, err
 	}
 
 	t.connectionID = atomic.AddUint64(&serverConnectionCounter, 1)
-
 	t.framer.writer.Flush()
 
 	defer func() {
@@ -443,6 +448,7 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 			streamID:       streamID,
 			contentSubtype: s.contentSubtype,
 			status:         status.New(codes.Internal, errMsg),
+			rst:            !frame.StreamEnded(),
 		})
 		return false
 	}
@@ -516,14 +522,16 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 	}
 	if httpMethod != http.MethodPost {
 		t.mu.Unlock()
+		errMsg := fmt.Sprintf("http2Server.operateHeaders parsed a :method field: %v which should be POST", httpMethod)
 		if logger.V(logLevel) {
-			logger.Infof("transport: http2Server.operateHeaders parsed a :method field: %v which should be POST", httpMethod)
+			logger.Infof("transport: %v", errMsg)
 		}
-		t.controlBuf.put(&cleanupStream{
-			streamID: streamID,
-			rst:      true,
-			rstCode:  http2.ErrCodeProtocol,
-			onWrite:  func() {},
+		t.controlBuf.put(&earlyAbortStream{
+			httpStatus:     405,
+			streamID:       streamID,
+			contentSubtype: s.contentSubtype,
+			status:         status.New(codes.Internal, errMsg),
+			rst:            !frame.StreamEnded(),
 		})
 		s.cancel()
 		return false
@@ -544,6 +552,7 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 				streamID:       s.id,
 				contentSubtype: s.contentSubtype,
 				status:         stat,
+				rst:            !frame.StreamEnded(),
 			})
 			return false
 		}
@@ -925,11 +934,25 @@ func (t *http2Server) checkForHeaderListSize(it interface{}) bool {
 	return true
 }
 
+func (t *http2Server) streamContextErr(s *Stream) error {
+	select {
+	case <-t.done:
+		return ErrConnClosing
+	default:
+	}
+	return ContextErr(s.ctx.Err())
+}
+
 // WriteHeader sends the header metadata md back to the client.
 func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error {
-	if s.updateHeaderSent() || s.getState() == streamDone {
+	if s.updateHeaderSent() {
 		return ErrIllegalHeaderWrite
 	}
+
+	if s.getState() == streamDone {
+		return t.streamContextErr(s)
+	}
+
 	s.hdrMu.Lock()
 	if md.Len() > 0 {
 		if s.header.Len() > 0 {
@@ -940,7 +963,7 @@ func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error {
 	}
 	if err := t.writeHeaderLocked(s); err != nil {
 		s.hdrMu.Unlock()
-		return err
+		return status.Convert(err).Err()
 	}
 	s.hdrMu.Unlock()
 	return nil
@@ -1056,23 +1079,12 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error {
 func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) error {
 	if !s.isHeaderSent() { // Headers haven't been written yet.
 		if err := t.WriteHeader(s, nil); err != nil {
-			if _, ok := err.(ConnectionError); ok {
-				return err
-			}
-			// TODO(mmukhi, dfawley): Make sure this is the right code to return.
-			return status.Errorf(codes.Internal, "transport: %v", err)
+			return err
 		}
 	} else {
 		// Writing headers checks for this condition.
 		if s.getState() == streamDone {
-			// TODO(mmukhi, dfawley): Should the server write also return io.EOF?
-			s.cancel()
-			select {
-			case <-t.done:
-				return ErrConnClosing
-			default:
-			}
-			return ContextErr(s.ctx.Err())
+			return t.streamContextErr(s)
 		}
 	}
 	df := &dataFrame{
@@ -1082,12 +1094,7 @@ func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) e
 		onEachWrite: t.setResetPingStrikes,
 	}
 	if err := s.wq.get(int32(len(hdr) + len(data))); err != nil {
-		select {
-		case <-t.done:
-			return ErrConnClosing
-		default:
-		}
-		return ContextErr(s.ctx.Err())
+		return t.streamContextErr(s)
 	}
 	return t.controlBuf.put(df)
 }
@@ -1210,9 +1217,7 @@ func (t *http2Server) Close() {
 	if err := t.conn.Close(); err != nil && logger.V(logLevel) {
 		logger.Infof("transport: error closing conn during Close: %v", err)
 	}
-	if channelz.IsOn() {
-		channelz.RemoveEntry(t.channelzID)
-	}
+	channelz.RemoveEntry(t.channelzID)
 	// Cancel all active streams.
 	for _, s := range streams {
 		s.cancel()
@@ -1225,10 +1230,6 @@ func (t *http2Server) Close() {
 
 // deleteStream deletes the stream s from transport's active streams.
 func (t *http2Server) deleteStream(s *Stream, eosReceived bool) {
-	// In case stream sending and receiving are invoked in separate
-	// goroutines (e.g., bi-directional streaming), cancel needs to be
-	// called to interrupt the potential blocking on other goroutines.
-	s.cancel()
 
 	t.mu.Lock()
 	if _, ok := t.activeStreams[s.id]; ok {
@@ -1250,6 +1251,11 @@ func (t *http2Server) deleteStream(s *Stream, eosReceived bool) {
 
 // finishStream closes the stream and puts the trailing headerFrame into controlbuf.
 func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, hdr *headerFrame, eosReceived bool) {
+	// In case stream sending and receiving are invoked in separate
+	// goroutines (e.g., bi-directional streaming), cancel needs to be
+	// called to interrupt the potential blocking on other goroutines.
+	s.cancel()
+
 	oldState := s.swapState(streamDone)
 	if oldState == streamDone {
 		// If the stream was already done, return.
@@ -1269,6 +1275,11 @@ func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, h
 
 // closeStream clears the footprint of a stream when the stream is not needed any more.
 func (t *http2Server) closeStream(s *Stream, rst bool, rstCode http2.ErrCode, eosReceived bool) {
+	// In case stream sending and receiving are invoked in separate
+	// goroutines (e.g., bi-directional streaming), cancel needs to be
+	// called to interrupt the potential blocking on other goroutines.
+	s.cancel()
+
 	s.swapState(streamDone)
 	t.deleteStream(s, eosReceived)
 

vendor/google.golang.org/grpc/internal/transport/transport.go

@@ -34,6 +34,7 @@ import (
 
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/resolver"
@@ -529,7 +530,7 @@ type ServerConfig struct {
 	InitialConnWindowSize int32
 	WriteBufferSize       int
 	ReadBufferSize        int
-	ChannelzParentID      int64
+	ChannelzParentID      *channelz.Identifier
 	MaxHeaderListSize     *uint32
 	HeaderTableSize       *uint32
 }
@@ -563,7 +564,7 @@ type ConnectOptions struct {
 	// ReadBufferSize sets the size of read buffer, which in turn determines how much data can be read at most for one read syscall.
 	ReadBufferSize int
 	// ChannelzParentID sets the addrConn id which initiate the creation of this client transport.
-	ChannelzParentID int64
+	ChannelzParentID *channelz.Identifier
 	// MaxHeaderListSize sets the max (uncompressed) size of header list that is prepared to be received.
 	MaxHeaderListSize *uint32
 	// UseProxy specifies if a proxy should be used.

vendor/google.golang.org/grpc/metadata/metadata.go

@@ -188,7 +188,9 @@ func FromIncomingContext(ctx context.Context) (MD, bool) {
 		// map, and there's no guarantee that the MD attached to the context is
 		// created using our helper functions.
 		key := strings.ToLower(k)
-		out[key] = v
+		s := make([]string, len(v))
+		copy(s, v)
+		out[key] = s
 	}
 	return out, true
 }
@@ -226,7 +228,9 @@ func FromOutgoingContext(ctx context.Context) (MD, bool) {
 		// map, and there's no guarantee that the MD attached to the context is
 		// created using our helper functions.
 		key := strings.ToLower(k)
-		out[key] = v
+		s := make([]string, len(v))
+		copy(s, v)
+		out[key] = s
 	}
 	for _, added := range raw.added {
 		if len(added)%2 == 1 {

vendor/google.golang.org/grpc/picker_wrapper.go

@@ -131,7 +131,7 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.
 			}
 			if _, ok := status.FromError(err); ok {
 				// Status error: end the RPC unconditionally with this status.
-				return nil, nil, err
+				return nil, nil, dropError{error: err}
 			}
 			// For all other errors, wait for ready RPCs should block and other
 			// RPCs should fail with unavailable.
@@ -175,3 +175,9 @@ func (pw *pickerWrapper) close() {
 	pw.done = true
 	close(pw.blockingCh)
 }
+
+// dropError is a wrapper error that indicates the LB policy wishes to drop the
+// RPC and not retry it.
+type dropError struct {
+	error
+}

vendor/google.golang.org/grpc/pickfirst.go

@@ -44,79 +44,107 @@ func (*pickfirstBuilder) Name() string {
 }
 
 type pickfirstBalancer struct {
-	state connectivity.State
-	cc    balancer.ClientConn
-	sc    balancer.SubConn
+	state   connectivity.State
+	cc      balancer.ClientConn
+	subConn balancer.SubConn
 }
 
 func (b *pickfirstBalancer) ResolverError(err error) {
-	switch b.state {
-	case connectivity.TransientFailure, connectivity.Idle, connectivity.Connecting:
-		// Set a failing picker if we don't have a good picker.
-		b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure,
-			Picker: &picker{err: fmt.Errorf("name resolver error: %v", err)},
-		})
-	}
 	if logger.V(2) {
 		logger.Infof("pickfirstBalancer: ResolverError called with error %v", err)
 	}
+	if b.subConn == nil {
+		b.state = connectivity.TransientFailure
+	}
+
+	if b.state != connectivity.TransientFailure {
+		// The picker will not change since the balancer does not currently
+		// report an error.
+		return
+	}
+	b.cc.UpdateState(balancer.State{
+		ConnectivityState: connectivity.TransientFailure,
+		Picker:            &picker{err: fmt.Errorf("name resolver error: %v", err)},
+	})
 }
 
-func (b *pickfirstBalancer) UpdateClientConnState(cs balancer.ClientConnState) error {
-	if len(cs.ResolverState.Addresses) == 0 {
+func (b *pickfirstBalancer) UpdateClientConnState(state balancer.ClientConnState) error {
+	if len(state.ResolverState.Addresses) == 0 {
+		// The resolver reported an empty address list. Treat it like an error by
+		// calling b.ResolverError.
+		if b.subConn != nil {
+			// Remove the old subConn. All addresses were removed, so it is no longer
+			// valid.
+			b.cc.RemoveSubConn(b.subConn)
+			b.subConn = nil
+		}
 		b.ResolverError(errors.New("produced zero addresses"))
 		return balancer.ErrBadResolverState
 	}
-	if b.sc == nil {
-		var err error
-		b.sc, err = b.cc.NewSubConn(cs.ResolverState.Addresses, balancer.NewSubConnOptions{})
-		if err != nil {
-			if logger.V(2) {
-				logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err)
-			}
-			b.state = connectivity.TransientFailure
-			b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure,
-				Picker: &picker{err: fmt.Errorf("error creating connection: %v", err)},
-			})
-			return balancer.ErrBadResolverState
+
+	if b.subConn != nil {
+		b.cc.UpdateAddresses(b.subConn, state.ResolverState.Addresses)
+		return nil
+	}
+
+	subConn, err := b.cc.NewSubConn(state.ResolverState.Addresses, balancer.NewSubConnOptions{})
+	if err != nil {
+		if logger.V(2) {
+			logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err)
 		}
-		b.state = connectivity.Idle
-		b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.Idle, Picker: &picker{result: balancer.PickResult{SubConn: b.sc}}})
-		b.sc.Connect()
-	} else {
-		b.cc.UpdateAddresses(b.sc, cs.ResolverState.Addresses)
-		b.sc.Connect()
+		b.state = connectivity.TransientFailure
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: connectivity.TransientFailure,
+			Picker:            &picker{err: fmt.Errorf("error creating connection: %v", err)},
+		})
+		return balancer.ErrBadResolverState
 	}
+	b.subConn = subConn
+	b.state = connectivity.Idle
+	b.cc.UpdateState(balancer.State{
+		ConnectivityState: connectivity.Idle,
+		Picker:            &picker{result: balancer.PickResult{SubConn: b.subConn}},
+	})
+	b.subConn.Connect()
 	return nil
 }
 
-func (b *pickfirstBalancer) UpdateSubConnState(sc balancer.SubConn, s balancer.SubConnState) {
+func (b *pickfirstBalancer) UpdateSubConnState(subConn balancer.SubConn, state balancer.SubConnState) {
 	if logger.V(2) {
-		logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", sc, s)
+		logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", subConn, state)
 	}
-	if b.sc != sc {
+	if b.subConn != subConn {
 		if logger.V(2) {
-			logger.Infof("pickfirstBalancer: ignored state change because sc is not recognized")
+			logger.Infof("pickfirstBalancer: ignored state change because subConn is not recognized")
 		}
 		return
 	}
-	b.state = s.ConnectivityState
-	if s.ConnectivityState == connectivity.Shutdown {
-		b.sc = nil
+	b.state = state.ConnectivityState
+	if state.ConnectivityState == connectivity.Shutdown {
+		b.subConn = nil
 		return
 	}
 
-	switch s.ConnectivityState {
+	switch state.ConnectivityState {
 	case connectivity.Ready:
-		b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{result: balancer.PickResult{SubConn: sc}}})
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &picker{result: balancer.PickResult{SubConn: subConn}},
+		})
 	case connectivity.Connecting:
-		b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{err: balancer.ErrNoSubConnAvailable}})
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &picker{err: balancer.ErrNoSubConnAvailable},
+		})
 	case connectivity.Idle:
-		b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &idlePicker{sc: sc}})
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &idlePicker{subConn: subConn},
+		})
 	case connectivity.TransientFailure:
 		b.cc.UpdateState(balancer.State{
-			ConnectivityState: s.ConnectivityState,
-			Picker:            &picker{err: s.ConnectionError},
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &picker{err: state.ConnectionError},
 		})
 	}
 }
@@ -125,8 +153,8 @@ func (b *pickfirstBalancer) Close() {
 }
 
 func (b *pickfirstBalancer) ExitIdle() {
-	if b.sc != nil && b.state == connectivity.Idle {
-		b.sc.Connect()
+	if b.subConn != nil && b.state == connectivity.Idle {
+		b.subConn.Connect()
 	}
 }
 
@@ -135,18 +163,18 @@ type picker struct {
 	err    error
 }
 
-func (p *picker) Pick(info balancer.PickInfo) (balancer.PickResult, error) {
+func (p *picker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
 	return p.result, p.err
 }
 
 // idlePicker is used when the SubConn is IDLE and kicks the SubConn into
 // CONNECTING when Pick is called.
 type idlePicker struct {
-	sc balancer.SubConn
+	subConn balancer.SubConn
 }
 
-func (i *idlePicker) Pick(info balancer.PickInfo) (balancer.PickResult, error) {
-	i.sc.Connect()
+func (i *idlePicker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
+	i.subConn.Connect()
 	return balancer.PickResult{}, balancer.ErrNoSubConnAvailable
 }
 

vendor/google.golang.org/grpc/resolver/resolver.go

@@ -27,6 +27,7 @@ import (
 
 	"google.golang.org/grpc/attributes"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/internal/pretty"
 	"google.golang.org/grpc/serviceconfig"
 )
 
@@ -139,13 +140,18 @@ type Address struct {
 
 // Equal returns whether a and o are identical.  Metadata is compared directly,
 // not with any recursive introspection.
-func (a *Address) Equal(o Address) bool {
+func (a Address) Equal(o Address) bool {
 	return a.Addr == o.Addr && a.ServerName == o.ServerName &&
 		a.Attributes.Equal(o.Attributes) &&
 		a.BalancerAttributes.Equal(o.BalancerAttributes) &&
 		a.Type == o.Type && a.Metadata == o.Metadata
 }
 
+// String returns JSON formatted string representation of the address.
+func (a Address) String() string {
+	return pretty.ToJSON(a)
+}
+
 // BuildOptions includes additional information for the builder to create
 // the resolver.
 type BuildOptions struct {

vendor/google.golang.org/grpc/resolver_conn_wrapper.go

@@ -19,7 +19,6 @@
 package grpc
 
 import (
-	"fmt"
 	"strings"
 	"sync"
 
@@ -27,6 +26,7 @@ import (
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcsync"
+	"google.golang.org/grpc/internal/pretty"
 	"google.golang.org/grpc/resolver"
 	"google.golang.org/grpc/serviceconfig"
 )
@@ -97,10 +97,7 @@ func (ccr *ccResolverWrapper) UpdateState(s resolver.State) error {
 	if ccr.done.HasFired() {
 		return nil
 	}
-	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: sending update to cc: %v", s)
-	if channelz.IsOn() {
-		ccr.addChannelzTraceEvent(s)
-	}
+	ccr.addChannelzTraceEvent(s)
 	ccr.curState = s
 	if err := ccr.cc.updateResolverState(ccr.curState, nil); err == balancer.ErrBadResolverState {
 		return balancer.ErrBadResolverState
@@ -125,10 +122,7 @@ func (ccr *ccResolverWrapper) NewAddress(addrs []resolver.Address) {
 	if ccr.done.HasFired() {
 		return
 	}
-	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: sending new addresses to cc: %v", addrs)
-	if channelz.IsOn() {
-		ccr.addChannelzTraceEvent(resolver.State{Addresses: addrs, ServiceConfig: ccr.curState.ServiceConfig})
-	}
+	ccr.addChannelzTraceEvent(resolver.State{Addresses: addrs, ServiceConfig: ccr.curState.ServiceConfig})
 	ccr.curState.Addresses = addrs
 	ccr.cc.updateResolverState(ccr.curState, nil)
 }
@@ -141,7 +135,7 @@ func (ccr *ccResolverWrapper) NewServiceConfig(sc string) {
 	if ccr.done.HasFired() {
 		return
 	}
-	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: got new service config: %v", sc)
+	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: got new service config: %s", sc)
 	if ccr.cc.dopts.disableServiceConfig {
 		channelz.Info(logger, ccr.cc.channelzID, "Service config lookups disabled; ignoring config")
 		return
@@ -151,9 +145,7 @@ func (ccr *ccResolverWrapper) NewServiceConfig(sc string) {
 		channelz.Warningf(logger, ccr.cc.channelzID, "ccResolverWrapper: error parsing service config: %v", scpr.Err)
 		return
 	}
-	if channelz.IsOn() {
-		ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: scpr})
-	}
+	ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: scpr})
 	ccr.curState.ServiceConfig = scpr
 	ccr.cc.updateResolverState(ccr.curState, nil)
 }
@@ -180,8 +172,5 @@ func (ccr *ccResolverWrapper) addChannelzTraceEvent(s resolver.State) {
 	} else if len(ccr.curState.Addresses) == 0 && len(s.Addresses) > 0 {
 		updates = append(updates, "resolver returned new addresses")
 	}
-	channelz.AddTraceEvent(logger, ccr.cc.channelzID, 0, &channelz.TraceEventDesc{
-		Desc:     fmt.Sprintf("Resolver state updated: %+v (%v)", s, strings.Join(updates, "; ")),
-		Severity: channelz.CtInfo,
-	})
+	channelz.Infof(logger, ccr.cc.channelzID, "Resolver state updated: %s (%v)", pretty.ToJSON(s), strings.Join(updates, "; "))
 }

vendor/google.golang.org/grpc/server.go

@@ -134,7 +134,7 @@ type Server struct {
 	channelzRemoveOnce sync.Once
 	serveWG            sync.WaitGroup // counts active Serve goroutines for GracefulStop
 
-	channelzID int64 // channelz unique identification number
+	channelzID *channelz.Identifier
 	czData     *channelzData
 
 	serverWorkerChannels []chan *serverWorkerData
@@ -584,9 +584,8 @@ func NewServer(opt ...ServerOption) *Server {
 		s.initServerWorkers()
 	}
 
-	if channelz.IsOn() {
-		s.channelzID = channelz.RegisterServer(&channelzServer{s}, "")
-	}
+	s.channelzID = channelz.RegisterServer(&channelzServer{s}, "")
+	channelz.Info(logger, s.channelzID, "Server created")
 	return s
 }
 
@@ -712,7 +711,7 @@ var ErrServerStopped = errors.New("grpc: the server has been stopped")
 
 type listenSocket struct {
 	net.Listener
-	channelzID int64
+	channelzID *channelz.Identifier
 }
 
 func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric {
@@ -724,9 +723,8 @@ func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric {
 
 func (l *listenSocket) Close() error {
 	err := l.Listener.Close()
-	if channelz.IsOn() {
-		channelz.RemoveEntry(l.channelzID)
-	}
+	channelz.RemoveEntry(l.channelzID)
+	channelz.Info(logger, l.channelzID, "ListenSocket deleted")
 	return err
 }
 
@@ -759,11 +757,6 @@ func (s *Server) Serve(lis net.Listener) error {
 	ls := &listenSocket{Listener: lis}
 	s.lis[ls] = true
 
-	if channelz.IsOn() {
-		ls.channelzID = channelz.RegisterListenSocket(ls, s.channelzID, lis.Addr().String())
-	}
-	s.mu.Unlock()
-
 	defer func() {
 		s.mu.Lock()
 		if s.lis != nil && s.lis[ls] {
@@ -773,8 +766,16 @@ func (s *Server) Serve(lis net.Listener) error {
 		s.mu.Unlock()
 	}()
 
-	var tempDelay time.Duration // how long to sleep on accept failure
+	var err error
+	ls.channelzID, err = channelz.RegisterListenSocket(ls, s.channelzID, lis.Addr().String())
+	if err != nil {
+		s.mu.Unlock()
+		return err
+	}
+	s.mu.Unlock()
+	channelz.Info(logger, ls.channelzID, "ListenSocket created")
 
+	var tempDelay time.Duration // how long to sleep on accept failure
 	for {
 		rawConn, err := lis.Accept()
 		if err != nil {
@@ -1709,11 +1710,7 @@ func (s *Server) Stop() {
 		s.done.Fire()
 	}()
 
-	s.channelzRemoveOnce.Do(func() {
-		if channelz.IsOn() {
-			channelz.RemoveEntry(s.channelzID)
-		}
-	})
+	s.channelzRemoveOnce.Do(func() { channelz.RemoveEntry(s.channelzID) })
 
 	s.mu.Lock()
 	listeners := s.lis
@@ -1751,11 +1748,7 @@ func (s *Server) GracefulStop() {
 	s.quit.Fire()
 	defer s.done.Fire()
 
-	s.channelzRemoveOnce.Do(func() {
-		if channelz.IsOn() {
-			channelz.RemoveEntry(s.channelzID)
-		}
-	})
+	s.channelzRemoveOnce.Do(func() { channelz.RemoveEntry(s.channelzID) })
 	s.mu.Lock()
 	if s.conns == nil {
 		s.mu.Unlock()
@@ -1808,12 +1801,26 @@ func (s *Server) getCodec(contentSubtype string) baseCodec {
 	return codec
 }
 
-// SetHeader sets the header metadata.
-// When called multiple times, all the provided metadata will be merged.
-// All the metadata will be sent out when one of the following happens:
-//  - grpc.SendHeader() is called;
-//  - The first response is sent out;
-//  - An RPC status is sent out (error or success).
+// SetHeader sets the header metadata to be sent from the server to the client.
+// The context provided must be the context passed to the server's handler.
+//
+// Streaming RPCs should prefer the SetHeader method of the ServerStream.
+//
+// When called multiple times, all the provided metadata will be merged.  All
+// the metadata will be sent out when one of the following happens:
+//
+// - grpc.SendHeader is called, or for streaming handlers, stream.SendHeader.
+// - The first response message is sent.  For unary handlers, this occurs when
+//   the handler returns; for streaming handlers, this can happen when stream's
+//   SendMsg method is called.
+// - An RPC status is sent out (error or success).  This occurs when the handler
+//   returns.
+//
+// SetHeader will fail if called after any of the events above.
+//
+// The error returned is compatible with the status package.  However, the
+// status code will often not match the RPC status as seen by the client
+// application, and therefore, should not be relied upon for this purpose.
 func SetHeader(ctx context.Context, md metadata.MD) error {
 	if md.Len() == 0 {
 		return nil
@@ -1825,8 +1832,14 @@ func SetHeader(ctx context.Context, md metadata.MD) error {
 	return stream.SetHeader(md)
 }
 
-// SendHeader sends header metadata. It may be called at most once.
-// The provided md and headers set by SetHeader() will be sent.
+// SendHeader sends header metadata. It may be called at most once, and may not
+// be called after any event that causes headers to be sent (see SetHeader for
+// a complete list).  The provided md and headers set by SetHeader() will be
+// sent.
+//
+// The error returned is compatible with the status package.  However, the
+// status code will often not match the RPC status as seen by the client
+// application, and therefore, should not be relied upon for this purpose.
 func SendHeader(ctx context.Context, md metadata.MD) error {
 	stream := ServerTransportStreamFromContext(ctx)
 	if stream == nil {
@@ -1840,6 +1853,10 @@ func SendHeader(ctx context.Context, md metadata.MD) error {
 
 // SetTrailer sets the trailer metadata that will be sent when an RPC returns.
 // When called more than once, all the provided metadata will be merged.
+//
+// The error returned is compatible with the status package.  However, the
+// status code will often not match the RPC status as seen by the client
+// application, and therefore, should not be relied upon for this purpose.
 func SetTrailer(ctx context.Context, md metadata.MD) error {
 	if md.Len() == 0 {
 		return nil

vendor/google.golang.org/grpc/service_config.go

@@ -381,6 +381,9 @@ func init() {
 //
 // If any of them is NOT *ServiceConfig, return false.
 func equalServiceConfig(a, b serviceconfig.Config) bool {
+	if a == nil && b == nil {
+		return true
+	}
 	aa, ok := a.(*ServiceConfig)
 	if !ok {
 		return false

vendor/google.golang.org/grpc/stream.go

@@ -36,6 +36,7 @@ import (
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcrand"
 	"google.golang.org/grpc/internal/grpcutil"
+	imetadata "google.golang.org/grpc/internal/metadata"
 	iresolver "google.golang.org/grpc/internal/resolver"
 	"google.golang.org/grpc/internal/serviceconfig"
 	"google.golang.org/grpc/internal/transport"
@@ -166,6 +167,11 @@ func NewClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
 }
 
 func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (_ ClientStream, err error) {
+	if md, _, ok := metadata.FromOutgoingContextRaw(ctx); ok {
+		if err := imetadata.Validate(md); err != nil {
+			return nil, status.Error(codes.Internal, err.Error())
+		}
+	}
 	if channelz.IsOn() {
 		cc.incrCallsStarted()
 		defer func() {
@@ -297,14 +303,28 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client
 	}
 	cs.binlog = binarylog.GetMethodLogger(method)
 
-	if err := cs.newAttemptLocked(false /* isTransparent */); err != nil {
+	cs.attempt, err = cs.newAttemptLocked(false /* isTransparent */)
+	if err != nil {
 		cs.finish(err)
 		return nil, err
 	}
 
-	op := func(a *csAttempt) error { return a.newStream() }
+	// Pick the transport to use and create a new stream on the transport.
+	// Assign cs.attempt upon success.
+	op := func(a *csAttempt) error {
+		if err := a.getTransport(); err != nil {
+			return err
+		}
+		if err := a.newStream(); err != nil {
+			return err
+		}
+		// Because this operation is always called either here (while creating
+		// the clientStream) or by the retry code while locked when replaying
+		// the operation, it is safe to access cs.attempt directly.
+		cs.attempt = a
+		return nil
+	}
 	if err := cs.withRetry(op, func() { cs.bufferForRetryLocked(0, op) }); err != nil {
-		cs.finish(err)
 		return nil, err
 	}
 
@@ -343,9 +363,15 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client
 	return cs, nil
 }
 
-// newAttemptLocked creates a new attempt with a transport.
-// If it succeeds, then it replaces clientStream's attempt with this new attempt.
-func (cs *clientStream) newAttemptLocked(isTransparent bool) (retErr error) {
+// newAttemptLocked creates a new csAttempt without a transport or stream.
+func (cs *clientStream) newAttemptLocked(isTransparent bool) (*csAttempt, error) {
+	if err := cs.ctx.Err(); err != nil {
+		return nil, toRPCErr(err)
+	}
+	if err := cs.cc.ctx.Err(); err != nil {
+		return nil, ErrClientConnClosing
+	}
+
 	ctx := newContextWithRPCInfo(cs.ctx, cs.callInfo.failFast, cs.callInfo.codec, cs.cp, cs.comp)
 	method := cs.callHdr.Method
 	sh := cs.cc.dopts.copts.StatsHandler
@@ -379,44 +405,39 @@ func (cs *clientStream) newAttemptLocked(isTransparent bool) (retErr error) {
 		ctx = trace.NewContext(ctx, trInfo.tr)
 	}
 
-	newAttempt := &csAttempt{
+	if cs.cc.parsedTarget.Scheme == "xds" {
+		// Add extra metadata (metadata that will be added by transport) to context
+		// so the balancer can see them.
+		ctx = grpcutil.WithExtraMetadata(ctx, metadata.Pairs(
+			"content-type", grpcutil.ContentType(cs.callHdr.ContentSubtype),
+		))
+	}
+
+	return &csAttempt{
 		ctx:          ctx,
 		beginTime:    beginTime,
 		cs:           cs,
 		dc:           cs.cc.dopts.dc,
 		statsHandler: sh,
 		trInfo:       trInfo,
-	}
-	defer func() {
-		if retErr != nil {
-			// This attempt is not set in the clientStream, so it's finish won't
-			// be called. Call it here for stats and trace in case they are not
-			// nil.
-			newAttempt.finish(retErr)
-		}
-	}()
+	}, nil
+}
 
-	if err := ctx.Err(); err != nil {
-		return toRPCErr(err)
-	}
+func (a *csAttempt) getTransport() error {
+	cs := a.cs
 
-	if cs.cc.parsedTarget.Scheme == "xds" {
-		// Add extra metadata (metadata that will be added by transport) to context
-		// so the balancer can see them.
-		ctx = grpcutil.WithExtraMetadata(ctx, metadata.Pairs(
-			"content-type", grpcutil.ContentType(cs.callHdr.ContentSubtype),
-		))
-	}
-	t, done, err := cs.cc.getTransport(ctx, cs.callInfo.failFast, cs.callHdr.Method)
+	var err error
+	a.t, a.done, err = cs.cc.getTransport(a.ctx, cs.callInfo.failFast, cs.callHdr.Method)
 	if err != nil {
+		if de, ok := err.(dropError); ok {
+			err = de.error
+			a.drop = true
+		}
 		return err
 	}
-	if trInfo != nil {
-		trInfo.firstLine.SetRemoteAddr(t.RemoteAddr())
+	if a.trInfo != nil {
+		a.trInfo.firstLine.SetRemoteAddr(a.t.RemoteAddr())
 	}
-	newAttempt.t = t
-	newAttempt.done = done
-	cs.attempt = newAttempt
 	return nil
 }
 
@@ -425,12 +446,21 @@ func (a *csAttempt) newStream() error {
 	cs.callHdr.PreviousAttempts = cs.numRetries
 	s, err := a.t.NewStream(a.ctx, cs.callHdr)
 	if err != nil {
-		// Return without converting to an RPC error so retry code can
-		// inspect.
-		return err
+		nse, ok := err.(*transport.NewStreamError)
+		if !ok {
+			// Unexpected.
+			return err
+		}
+
+		if nse.AllowTransparentRetry {
+			a.allowTransparentRetry = true
+		}
+
+		// Unwrap and convert error.
+		return toRPCErr(nse.Err)
 	}
-	cs.attempt.s = s
-	cs.attempt.p = &parser{r: s}
+	a.s = s
+	a.p = &parser{r: s}
 	return nil
 }
 
@@ -456,7 +486,7 @@ type clientStream struct {
 
 	retryThrottler *retryThrottler // The throttler active when the RPC began.
 
-	binlog *binarylog.MethodLogger // Binary logger, can be nil.
+	binlog binarylog.MethodLogger // Binary logger, can be nil.
 	// serverHeaderBinlogged is a boolean for whether server header has been
 	// logged. Server header will be logged when the first time one of those
 	// happens: stream.Header(), stream.Recv().
@@ -508,6 +538,11 @@ type csAttempt struct {
 
 	statsHandler stats.Handler
 	beginTime    time.Time
+
+	// set for newStream errors that may be transparently retried
+	allowTransparentRetry bool
+	// set for pick errors that are returned as a status
+	drop bool
 }
 
 func (cs *clientStream) commitAttemptLocked() {
@@ -527,41 +562,21 @@ func (cs *clientStream) commitAttempt() {
 // shouldRetry returns nil if the RPC should be retried; otherwise it returns
 // the error that should be returned by the operation.  If the RPC should be
 // retried, the bool indicates whether it is being retried transparently.
-func (cs *clientStream) shouldRetry(err error) (bool, error) {
-	if cs.attempt.s == nil {
-		// Error from NewClientStream.
-		nse, ok := err.(*transport.NewStreamError)
-		if !ok {
-			// Unexpected, but assume no I/O was performed and the RPC is not
-			// fatal, so retry indefinitely.
-			return true, nil
-		}
-
-		// Unwrap and convert error.
-		err = toRPCErr(nse.Err)
-
-		// Never retry DoNotRetry errors, which indicate the RPC should not be
-		// retried due to max header list size violation, etc.
-		if nse.DoNotRetry {
-			return false, err
-		}
+func (a *csAttempt) shouldRetry(err error) (bool, error) {
+	cs := a.cs
 
-		// In the event of a non-IO operation error from NewStream, we never
-		// attempted to write anything to the wire, so we can retry
-		// indefinitely.
-		if !nse.DoNotTransparentRetry {
-			return true, nil
-		}
-	}
-	if cs.finished || cs.committed {
-		// RPC is finished or committed; cannot retry.
+	if cs.finished || cs.committed || a.drop {
+		// RPC is finished or committed or was dropped by the picker; cannot retry.
 		return false, err
 	}
+	if a.s == nil && a.allowTransparentRetry {
+		return true, nil
+	}
 	// Wait for the trailers.
 	unprocessed := false
-	if cs.attempt.s != nil {
-		<-cs.attempt.s.Done()
-		unprocessed = cs.attempt.s.Unprocessed()
+	if a.s != nil {
+		<-a.s.Done()
+		unprocessed = a.s.Unprocessed()
 	}
 	if cs.firstAttempt && unprocessed {
 		// First attempt, stream unprocessed: transparently retry.
@@ -573,14 +588,14 @@ func (cs *clientStream) shouldRetry(err error) (bool, error) {
 
 	pushback := 0
 	hasPushback := false
-	if cs.attempt.s != nil {
-		if !cs.attempt.s.TrailersOnly() {
+	if a.s != nil {
+		if !a.s.TrailersOnly() {
 			return false, err
 		}
 
 		// TODO(retry): Move down if the spec changes to not check server pushback
 		// before considering this a failure for throttling.
-		sps := cs.attempt.s.Trailer()["grpc-retry-pushback-ms"]
+		sps := a.s.Trailer()["grpc-retry-pushback-ms"]
 		if len(sps) == 1 {
 			var e error
 			if pushback, e = strconv.Atoi(sps[0]); e != nil || pushback < 0 {
@@ -597,10 +612,10 @@ func (cs *clientStream) shouldRetry(err error) (bool, error) {
 	}
 
 	var code codes.Code
-	if cs.attempt.s != nil {
-		code = cs.attempt.s.Status().Code()
+	if a.s != nil {
+		code = a.s.Status().Code()
 	} else {
-		code = status.Convert(err).Code()
+		code = status.Code(err)
 	}
 
 	rp := cs.methodConfig.RetryPolicy
@@ -645,19 +660,24 @@ func (cs *clientStream) shouldRetry(err error) (bool, error) {
 }
 
 // Returns nil if a retry was performed and succeeded; error otherwise.
-func (cs *clientStream) retryLocked(lastErr error) error {
+func (cs *clientStream) retryLocked(attempt *csAttempt, lastErr error) error {
 	for {
-		cs.attempt.finish(toRPCErr(lastErr))
-		isTransparent, err := cs.shouldRetry(lastErr)
+		attempt.finish(toRPCErr(lastErr))
+		isTransparent, err := attempt.shouldRetry(lastErr)
 		if err != nil {
 			cs.commitAttemptLocked()
 			return err
 		}
 		cs.firstAttempt = false
-		if err := cs.newAttemptLocked(isTransparent); err != nil {
+		attempt, err = cs.newAttemptLocked(isTransparent)
+		if err != nil {
+			// Only returns error if the clientconn is closed or the context of
+			// the stream is canceled.
 			return err
 		}
-		if lastErr = cs.replayBufferLocked(); lastErr == nil {
+		// Note that the first op in the replay buffer always sets cs.attempt
+		// if it is able to pick a transport and create a stream.
+		if lastErr = cs.replayBufferLocked(attempt); lastErr == nil {
 			return nil
 		}
 	}
@@ -667,7 +687,10 @@ func (cs *clientStream) Context() context.Context {
 	cs.commitAttempt()
 	// No need to lock before using attempt, since we know it is committed and
 	// cannot change.
-	return cs.attempt.s.Context()
+	if cs.attempt.s != nil {
+		return cs.attempt.s.Context()
+	}
+	return cs.ctx
 }
 
 func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func()) error {
@@ -697,7 +720,7 @@ func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func())
 			cs.mu.Unlock()
 			return err
 		}
-		if err := cs.retryLocked(err); err != nil {
+		if err := cs.retryLocked(a, err); err != nil {
 			cs.mu.Unlock()
 			return err
 		}
@@ -728,7 +751,7 @@ func (cs *clientStream) Header() (metadata.MD, error) {
 		cs.binlog.Log(logEntry)
 		cs.serverHeaderBinlogged = true
 	}
-	return m, err
+	return m, nil
 }
 
 func (cs *clientStream) Trailer() metadata.MD {
@@ -746,10 +769,9 @@ func (cs *clientStream) Trailer() metadata.MD {
 	return cs.attempt.s.Trailer()
 }
 
-func (cs *clientStream) replayBufferLocked() error {
-	a := cs.attempt
+func (cs *clientStream) replayBufferLocked(attempt *csAttempt) error {
 	for _, f := range cs.buffer {
-		if err := f(a); err != nil {
+		if err := f(attempt); err != nil {
 			return err
 		}
 	}
@@ -797,22 +819,17 @@ func (cs *clientStream) SendMsg(m interface{}) (err error) {
 	if len(payload) > *cs.callInfo.maxSendMessageSize {
 		return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), *cs.callInfo.maxSendMessageSize)
 	}
-	msgBytes := data // Store the pointer before setting to nil. For binary logging.
 	op := func(a *csAttempt) error {
-		err := a.sendMsg(m, hdr, payload, data)
-		// nil out the message and uncomp when replaying; they are only needed for
-		// stats which is disabled for subsequent attempts.
-		m, data = nil, nil
-		return err
+		return a.sendMsg(m, hdr, payload, data)
 	}
 	err = cs.withRetry(op, func() { cs.bufferForRetryLocked(len(hdr)+len(payload), op) })
 	if cs.binlog != nil && err == nil {
 		cs.binlog.Log(&binarylog.ClientMessage{
 			OnClientSide: true,
-			Message:      msgBytes,
+			Message:      data,
 		})
 	}
-	return
+	return err
 }
 
 func (cs *clientStream) RecvMsg(m interface{}) error {
@@ -1364,8 +1381,10 @@ func (as *addrConnStream) finish(err error) {
 
 // ServerStream defines the server-side behavior of a streaming RPC.
 //
-// All errors returned from ServerStream methods are compatible with the
-// status package.
+// Errors returned from ServerStream methods are compatible with the status
+// package.  However, the status code will often not match the RPC status as
+// seen by the client application, and therefore, should not be relied upon for
+// this purpose.
 type ServerStream interface {
 	// SetHeader sets the header metadata. It may be called multiple times.
 	// When call multiple times, all the provided metadata will be merged.
@@ -1428,7 +1447,7 @@ type serverStream struct {
 
 	statsHandler stats.Handler
 
-	binlog *binarylog.MethodLogger
+	binlog binarylog.MethodLogger
 	// serverHeaderBinlogged indicates whether server header has been logged. It
 	// will happen when one of the following two happens: stream.SendHeader(),
 	// stream.Send().
@@ -1448,11 +1467,20 @@ func (ss *serverStream) SetHeader(md metadata.MD) error {
 	if md.Len() == 0 {
 		return nil
 	}
+	err := imetadata.Validate(md)
+	if err != nil {
+		return status.Error(codes.Internal, err.Error())
+	}
 	return ss.s.SetHeader(md)
 }
 
 func (ss *serverStream) SendHeader(md metadata.MD) error {
-	err := ss.t.WriteHeader(ss.s, md)
+	err := imetadata.Validate(md)
+	if err != nil {
+		return status.Error(codes.Internal, err.Error())
+	}
+
+	err = ss.t.WriteHeader(ss.s, md)
 	if ss.binlog != nil && !ss.serverHeaderBinlogged {
 		h, _ := ss.s.Header()
 		ss.binlog.Log(&binarylog.ServerHeader{
@@ -1467,6 +1495,9 @@ func (ss *serverStream) SetTrailer(md metadata.MD) {
 	if md.Len() == 0 {
 		return
 	}
+	if err := imetadata.Validate(md); err != nil {
+		logger.Errorf("stream: failed to validate md when setting trailer, err: %v", err)
+	}
 	ss.s.SetTrailer(md)
 }
 

vendor/google.golang.org/grpc/version.go

@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.45.0"
+const Version = "1.47.0"

vendor/google.golang.org/protobuf/encoding/protowire/wire.go

@@ -21,10 +21,11 @@ import (
 type Number int32
 
 const (
-	MinValidNumber      Number = 1
-	FirstReservedNumber Number = 19000
-	LastReservedNumber  Number = 19999
-	MaxValidNumber      Number = 1<<29 - 1
+	MinValidNumber        Number = 1
+	FirstReservedNumber   Number = 19000
+	LastReservedNumber    Number = 19999
+	MaxValidNumber        Number = 1<<29 - 1
+	DefaultRecursionLimit        = 10000
 )
 
 // IsValid reports whether the field number is semantically valid.
@@ -55,6 +56,7 @@ const (
 	errCodeOverflow
 	errCodeReserved
 	errCodeEndGroup
+	errCodeRecursionDepth
 )
 
 var (
@@ -112,6 +114,10 @@ func ConsumeField(b []byte) (Number, Type, int) {
 // When parsing a group, the length includes the end group marker and
 // the end group is verified to match the starting field number.
 func ConsumeFieldValue(num Number, typ Type, b []byte) (n int) {
+	return consumeFieldValueD(num, typ, b, DefaultRecursionLimit)
+}
+
+func consumeFieldValueD(num Number, typ Type, b []byte, depth int) (n int) {
 	switch typ {
 	case VarintType:
 		_, n = ConsumeVarint(b)
@@ -126,6 +132,9 @@ func ConsumeFieldValue(num Number, typ Type, b []byte) (n int) {
 		_, n = ConsumeBytes(b)
 		return n
 	case StartGroupType:
+		if depth < 0 {
+			return errCodeRecursionDepth
+		}
 		n0 := len(b)
 		for {
 			num2, typ2, n := ConsumeTag(b)
@@ -140,7 +149,7 @@ func ConsumeFieldValue(num Number, typ Type, b []byte) (n int) {
 				return n0 - len(b)
 			}
 
-			n = ConsumeFieldValue(num2, typ2, b)
+			n = consumeFieldValueD(num2, typ2, b, depth-1)
 			if n < 0 {
 				return n // forward error code
 			}

vendor/google.golang.org/protobuf/internal/encoding/text/decode.go

@@ -381,7 +381,7 @@ func (d *Decoder) currentOpenKind() (Kind, byte) {
 	case '[':
 		return ListOpen, ']'
 	}
-	panic(fmt.Sprintf("Decoder: openStack contains invalid byte %s", string(openCh)))
+	panic(fmt.Sprintf("Decoder: openStack contains invalid byte %c", openCh))
 }
 
 func (d *Decoder) pushOpenStack(ch byte) {

vendor/google.golang.org/protobuf/internal/errors/is_go112.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !go1.13
 // +build !go1.13
 
 package errors

vendor/google.golang.org/protobuf/internal/errors/is_go113.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.13
 // +build go1.13
 
 package errors

vendor/google.golang.org/protobuf/internal/flags/proto_legacy_disable.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !protolegacy
 // +build !protolegacy
 
 package flags

vendor/google.golang.org/protobuf/internal/flags/proto_legacy_enable.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build protolegacy
 // +build protolegacy
 
 package flags

vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !go1.12
 // +build !go1.12
 
 package impl

vendor/google.golang.org/protobuf/internal/impl/codec_map_go112.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.12
 // +build go1.12
 
 package impl

vendor/google.golang.org/protobuf/internal/impl/codec_reflect.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build purego || appengine
 // +build purego appengine
 
 package impl

vendor/google.golang.org/protobuf/internal/impl/codec_unsafe.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !purego && !appengine
 // +build !purego,!appengine
 
 package impl

vendor/google.golang.org/protobuf/internal/impl/decode.go

@@ -18,6 +18,7 @@ import (
 )
 
 var errDecode = errors.New("cannot parse invalid wire-format data")
+var errRecursionDepth = errors.New("exceeded maximum recursion depth")
 
 type unmarshalOptions struct {
 	flags    protoiface.UnmarshalInputFlags
@@ -25,6 +26,7 @@ type unmarshalOptions struct {
 		FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error)
 		FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error)
 	}
+	depth int
 }
 
 func (o unmarshalOptions) Options() proto.UnmarshalOptions {
@@ -44,6 +46,7 @@ func (o unmarshalOptions) IsDefault() bool {
 
 var lazyUnmarshalOptions = unmarshalOptions{
 	resolver: preg.GlobalTypes,
+	depth:    protowire.DefaultRecursionLimit,
 }
 
 type unmarshalOutput struct {
@@ -62,6 +65,7 @@ func (mi *MessageInfo) unmarshal(in piface.UnmarshalInput) (piface.UnmarshalOutp
 	out, err := mi.unmarshalPointer(in.Buf, p, 0, unmarshalOptions{
 		flags:    in.Flags,
 		resolver: in.Resolver,
+		depth:    in.Depth,
 	})
 	var flags piface.UnmarshalOutputFlags
 	if out.initialized {
@@ -82,6 +86,10 @@ var errUnknown = errors.New("unknown")
 
 func (mi *MessageInfo) unmarshalPointer(b []byte, p pointer, groupTag protowire.Number, opts unmarshalOptions) (out unmarshalOutput, err error) {
 	mi.init()
+	opts.depth--
+	if opts.depth < 0 {
+		return out, errRecursionDepth
+	}
 	if flags.ProtoLegacy && mi.isMessageSet {
 		return unmarshalMessageSet(mi, b, p, opts)
 	}

vendor/google.golang.org/protobuf/internal/impl/pointer_reflect.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build purego || appengine
 // +build purego appengine
 
 package impl

vendor/google.golang.org/protobuf/internal/impl/pointer_unsafe.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !purego && !appengine
 // +build !purego,!appengine
 
 package impl

vendor/google.golang.org/protobuf/internal/strs/strings_pure.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build purego || appengine
 // +build purego appengine
 
 package strs

vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !purego && !appengine
 // +build !purego,!appengine
 
 package strs

vendor/google.golang.org/protobuf/internal/version/version.go

@@ -52,8 +52,8 @@ import (
 //	10. Send out the CL for review and submit it.
 const (
 	Major      = 1
-	Minor      = 27
-	Patch      = 1
+	Minor      = 28
+	Patch      = 0
 	PreRelease = ""
 )
 

vendor/google.golang.org/protobuf/proto/decode.go

@@ -42,18 +42,25 @@ type UnmarshalOptions struct {
 		FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error)
 		FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error)
 	}
+
+	// RecursionLimit limits how deeply messages may be nested.
+	// If zero, a default limit is applied.
+	RecursionLimit int
 }
 
 // Unmarshal parses the wire-format message in b and places the result in m.
 // The provided message must be mutable (e.g., a non-nil pointer to a message).
 func Unmarshal(b []byte, m Message) error {
-	_, err := UnmarshalOptions{}.unmarshal(b, m.ProtoReflect())
+	_, err := UnmarshalOptions{RecursionLimit: protowire.DefaultRecursionLimit}.unmarshal(b, m.ProtoReflect())
 	return err
 }
 
 // Unmarshal parses the wire-format message in b and places the result in m.
 // The provided message must be mutable (e.g., a non-nil pointer to a message).
 func (o UnmarshalOptions) Unmarshal(b []byte, m Message) error {
+	if o.RecursionLimit == 0 {
+		o.RecursionLimit = protowire.DefaultRecursionLimit
+	}
 	_, err := o.unmarshal(b, m.ProtoReflect())
 	return err
 }
@@ -63,6 +70,9 @@ func (o UnmarshalOptions) Unmarshal(b []byte, m Message) error {
 // This method permits fine-grained control over the unmarshaler.
 // Most users should use Unmarshal instead.
 func (o UnmarshalOptions) UnmarshalState(in protoiface.UnmarshalInput) (protoiface.UnmarshalOutput, error) {
+	if o.RecursionLimit == 0 {
+		o.RecursionLimit = protowire.DefaultRecursionLimit
+	}
 	return o.unmarshal(in.Buf, in.Message)
 }
 
@@ -86,12 +96,17 @@ func (o UnmarshalOptions) unmarshal(b []byte, m protoreflect.Message) (out proto
 			Message:  m,
 			Buf:      b,
 			Resolver: o.Resolver,
+			Depth:    o.RecursionLimit,
 		}
 		if o.DiscardUnknown {
 			in.Flags |= protoiface.UnmarshalDiscardUnknown
 		}
 		out, err = methods.Unmarshal(in)
 	} else {
+		o.RecursionLimit--
+		if o.RecursionLimit < 0 {
+			return out, errors.New("exceeded max recursion depth")
+		}
 		err = o.unmarshalMessageSlow(b, m)
 	}
 	if err != nil {

vendor/google.golang.org/protobuf/proto/proto_methods.go

@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // The protoreflect build tag disables use of fast-path methods.
+//go:build !protoreflect
 // +build !protoreflect
 
 package proto

vendor/google.golang.org/protobuf/proto/proto_reflect.go

@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // The protoreflect build tag disables use of fast-path methods.
+//go:build protoreflect
 // +build protoreflect
 
 package proto

vendor/google.golang.org/protobuf/reflect/protoreflect/methods.go

@@ -53,6 +53,7 @@ type (
 			FindExtensionByName(field FullName) (ExtensionType, error)
 			FindExtensionByNumber(message FullName, field FieldNumber) (ExtensionType, error)
 		}
+		Depth int
 	}
 	unmarshalOutput = struct {
 		pragma.NoUnkeyedLiterals

vendor/google.golang.org/protobuf/reflect/protoreflect/value_pure.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build purego || appengine
 // +build purego appengine
 
 package protoreflect

vendor/google.golang.org/protobuf/reflect/protoreflect/value_union.go

@@ -41,6 +41,31 @@ import (
 // Converting to/from a Value and a concrete Go value panics on type mismatch.
 // For example, ValueOf("hello").Int() panics because this attempts to
 // retrieve an int64 from a string.
+//
+// List, Map, and Message Values are called "composite" values.
+//
+// A composite Value may alias (reference) memory at some location,
+// such that changes to the Value updates the that location.
+// A composite value acquired with a Mutable method, such as Message.Mutable,
+// always references the source object.
+//
+// For example:
+//	// Append a 0 to a "repeated int32" field.
+//	// Since the Value returned by Mutable is guaranteed to alias
+//	// the source message, modifying the Value modifies the message.
+//	message.Mutable(fieldDesc).(List).Append(protoreflect.ValueOfInt32(0))
+//
+//	// Assign [0] to a "repeated int32" field by creating a new Value,
+//	// modifying it, and assigning it.
+//	list := message.NewField(fieldDesc).(List)
+//	list.Append(protoreflect.ValueOfInt32(0))
+//	message.Set(fieldDesc, list)
+//	// ERROR: Since it is not defined whether Set aliases the source,
+//	// appending to the List here may or may not modify the message.
+//	list.Append(protoreflect.ValueOfInt32(0))
+//
+// Some operations, such as Message.Get, may return an "empty, read-only"
+// composite Value. Modifying an empty, read-only value panics.
 type Value value
 
 // The protoreflect API uses a custom Value union type instead of interface{}

vendor/google.golang.org/protobuf/reflect/protoreflect/value_unsafe.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !purego && !appengine
 // +build !purego,!appengine
 
 package protoreflect