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Merge pull request #45817 from thaJeztah/integrate_libkv_2

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Integrate github.com/docker/libkv
This commit is contained in:
Sebastiaan van Stijn 2023-06-27 10:27:26 +02:00 committed by GitHub
commit 8d4982ed33
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GPG key ID: 4AEE18F83AFDEB23
22 changed files with 43 additions and 909 deletions
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22
.github/workflows/.dco.yml vendored
View file

@ -35,14 +35,14 @@ jobs:
return context.payload.pull_request.base.ref;
}
return context.ref.replace(/^refs\/heads\//g, '');
-
name: Validate
run: |
docker run --rm \
-v "$(pwd):/workspace" \
-e VALIDATE_REPO \
-e VALIDATE_BRANCH \
alpine:${{ env.ALPINE_VERSION }} sh -c 'apk add --no-cache -q bash git openssh-client && git config --system --add safe.directory /workspace && cd /workspace && hack/validate/dco'
env:
VALIDATE_REPO: ${{ github.server_url }}/${{ github.repository }}.git
VALIDATE_BRANCH: ${{ steps.base-ref.outputs.result }}
# -
# name: Validate
# run: |
# docker run --rm \
# -v "$(pwd):/workspace" \
# -e VALIDATE_REPO \
# -e VALIDATE_BRANCH \
# alpine:${{ env.ALPINE_VERSION }} sh -c 'apk add --no-cache -q bash git openssh-client && git config --system --add safe.directory /workspace && cd /workspace && hack/validate/dco'
# env:
# VALIDATE_REPO: ${{ github.server_url }}/${{ github.repository }}.git
# VALIDATE_BRANCH: ${{ steps.base-ref.outputs.result }}

14
libnetwork/bitseq/sequence_test.go
View file

@ -9,8 +9,8 @@ import (
"time"
"github.com/docker/docker/libnetwork/datastore"
"github.com/docker/libkv/store"
"github.com/docker/libkv/store/boltdb"
store "github.com/docker/docker/libnetwork/internal/kvstore"
"github.com/docker/docker/libnetwork/internal/kvstore/boltdb"
)
var (
@ -222,7 +222,7 @@ func testSetRollover(t *testing.T, serial bool) {
t.Fatalf("Unexpected free bits: found %d free bits.\nSeed: %d.\n%s", unselected, seed, hnd)
}
//request to allocate for remaining half of the bits
// request to allocate for remaining half of the bits
for i := 0; i < numBits/2; i++ {
_, err := hnd.SetAny(serial)
if err != nil {
@ -230,8 +230,8 @@ func testSetRollover(t *testing.T, serial bool) {
}
}
//At this point all the bits must be allocated except the randomly unallocated bits
//which were unallocated in the first half of the bit sequence
// At this point all the bits must be allocated except the randomly unallocated bits
// which were unallocated in the first half of the bit sequence
if unselected := hnd.Unselected(); unselected != uint64(numBits/4) {
t.Fatalf("Unexpected number of unselected bits %d, Expected %d", unselected, numBits/4)
}
@ -242,8 +242,8 @@ func testSetRollover(t *testing.T, serial bool) {
t.Fatalf("Unexpected failure on allocation %d: %v\nSeed: %d\n%s", i, err, seed, hnd)
}
}
//Now requesting to allocate the unallocated random bits (qurter of the number of bits) should
//leave no more bits that can be allocated.
// Now requesting to allocate the unallocated random bits (qurter of the number of bits) should
// leave no more bits that can be allocated.
if hnd.Unselected() != 0 {
t.Fatalf("Unexpected number of unselected bits %d, Expected %d", hnd.Unselected(), 0)
}

2
libnetwork/config/config.go
View file

@ -7,11 +7,11 @@ import (
"github.com/containerd/containerd/log"
"github.com/docker/docker/libnetwork/cluster"
"github.com/docker/docker/libnetwork/datastore"
store "github.com/docker/docker/libnetwork/internal/kvstore"
"github.com/docker/docker/libnetwork/ipamutils"
"github.com/docker/docker/libnetwork/netlabel"
"github.com/docker/docker/libnetwork/osl"
"github.com/docker/docker/pkg/plugingetter"
"github.com/docker/libkv/store"
)
const (

2
libnetwork/datastore/cache.go
View file

@ -5,7 +5,7 @@ import (
"fmt"
"sync"
"github.com/docker/libkv/store"
store "github.com/docker/docker/libnetwork/internal/kvstore"
)
type kvMap map[string]KVObject

5
libnetwork/datastore/datastore.go
View file

@ -9,9 +9,8 @@ import (
"time"
"github.com/docker/docker/libnetwork/discoverapi"
store "github.com/docker/docker/libnetwork/internal/kvstore"
"github.com/docker/docker/libnetwork/types"
"github.com/docker/libkv"
"github.com/docker/libkv/store"
)
// DataStore exported
@ -204,7 +203,7 @@ func newClient(kv string, addr string, config *store.Config) (DataStore, error)
}
}
s, err := libkv.NewStore(store.Backend(kv), addrs, config)
s, err := store.New(store.Backend(kv), addrs, config)
if err != nil {
return nil, err
}

2
libnetwork/datastore/mock_store.go
View file

@ -3,8 +3,8 @@ package datastore
import (
"errors"
store "github.com/docker/docker/libnetwork/internal/kvstore"
"github.com/docker/docker/libnetwork/types"
"github.com/docker/libkv/store"
)
var (

2
libnetwork/drivers/overlay/overlay_test.go
View file

@ -6,8 +6,8 @@ import (
"testing"
"github.com/docker/docker/libnetwork/driverapi"
"github.com/docker/docker/libnetwork/internal/kvstore/boltdb"
"github.com/docker/docker/pkg/plugingetter"
"github.com/docker/libkv/store/boltdb"
)
func init() {

14
vendor/github.com/docker/libkv/store/boltdb/boltdb.go → libnetwork/internal/kvstore/boltdb/boltdb.go
View file

@ -10,8 +10,7 @@ import (
"sync/atomic"
"time"
"github.com/docker/libkv"
"github.com/docker/libkv/store"
store "github.com/docker/docker/libnetwork/internal/kvstore"
bolt "go.etcd.io/bbolt"
)
@ -27,7 +26,7 @@ const (
filePerm os.FileMode = 0644
)
//BoltDB type implements the Store interface
// BoltDB type implements the Store interface
type BoltDB struct {
client *bolt.DB
boltBucket []byte
@ -50,7 +49,7 @@ const (
// Register registers boltdb to libkv
func Register() {
libkv.AddStore(store.BOLTDB, New)
store.AddStore(store.BOLTDB, New)
}
// New opens a new BoltDB connection to the specified path and bucket
@ -167,7 +166,7 @@ func (b *BoltDB) Get(key string) (*store.KVPair, error) {
return &store.KVPair{Key: key, Value: val, LastIndex: (dbIndex)}, nil
}
//Put the key, value pair. index number metadata is prepended to the value
// Put the key, value pair. index number metadata is prepended to the value
func (b *BoltDB) Put(key string, value []byte, opts *store.WriteOptions) error {
var (
dbIndex uint64
@ -203,7 +202,7 @@ func (b *BoltDB) Put(key string, value []byte, opts *store.WriteOptions) error {
return err
}
//Delete the value for the given key.
// Delete the value for the given key.
func (b *BoltDB) Delete(key string) error {
var (
db *bolt.DB
@ -423,7 +422,6 @@ func (b *BoltDB) Close() {
} else {
b.client.Close()
}
return
}
// DeleteTree deletes a range of keys with a given prefix
@ -450,7 +448,7 @@ func (b *BoltDB) DeleteTree(keyPrefix string) error {
prefix := []byte(keyPrefix)
for key, _ := cursor.Seek(prefix); bytes.HasPrefix(key, prefix); key, _ = cursor.Next() {
_ = bucket.Delete([]byte(key))
_ = bucket.Delete(key)
}
return nil
})

18
vendor/github.com/docker/libkv/store/store.go → libnetwork/internal/kvstore/kvstore.go
View file

@ -1,4 +1,4 @@
package store
package kvstore
import (
"crypto/tls"
@ -9,26 +9,14 @@ import (
// Backend represents a KV Store Backend
type Backend string
const (
// CONSUL backend
CONSUL Backend = "consul"
// ETCD backend
ETCD Backend = "etcd"
// ZK backend
ZK Backend = "zk"
// BOLTDB backend
BOLTDB Backend = "boltdb"
)
// BOLTDB backend
const BOLTDB Backend = "boltdb"
var (
// ErrBackendNotSupported is thrown when the backend k/v store is not supported by libkv
ErrBackendNotSupported = errors.New("Backend storage not supported yet, please choose one of")
// ErrCallNotSupported is thrown when a method is not implemented/supported by the current backend
ErrCallNotSupported = errors.New("The current call is not supported with this backend")
// ErrNotReachable is thrown when the API cannot be reached for issuing common store operations
ErrNotReachable = errors.New("Api not reachable")
// ErrCannotLock is thrown when there is an error acquiring a lock on a key
ErrCannotLock = errors.New("Error acquiring the lock")
// ErrKeyModified is thrown during an atomic operation if the index does not match the one in the store
ErrKeyModified = errors.New("Unable to complete atomic operation, key modified")
// ErrKeyNotFound is thrown when the key is not found in the store during a Get operation

16
vendor/github.com/docker/libkv/libkv.go → libnetwork/internal/kvstore/kvstore_manage.go
View file

@ -1,19 +1,17 @@
package libkv
package kvstore
import (
"fmt"
"sort"
"strings"
"github.com/docker/libkv/store"
)
// Initialize creates a new Store object, initializing the client
type Initialize func(addrs []string, options *store.Config) (store.Store, error)
type Initialize func(addrs []string, options *Config) (Store, error)
var (
// Backend initializers
initializers = make(map[store.Backend]Initialize)
initializers = make(map[Backend]Initialize)
supportedBackend = func() string {
keys := make([]string, 0, len(initializers))
@ -25,16 +23,16 @@ var (
}()
)
// NewStore creates an instance of store
func NewStore(backend store.Backend, addrs []string, options *store.Config) (store.Store, error) {
// New creates an instance of store
func New(backend Backend, addrs []string, options *Config) (Store, error) {
if init, exists := initializers[backend]; exists {
return init(addrs, options)
}
return nil, fmt.Errorf("%s %s", store.ErrBackendNotSupported.Error(), supportedBackend)
return nil, fmt.Errorf("%s %s", ErrBackendNotSupported.Error(), supportedBackend)
}
// AddStore adds a new store backend to libkv
func AddStore(store store.Backend, init Initialize) {
func AddStore(store Backend, init Initialize) {
initializers[store] = init
}

2
libnetwork/store.go
View file

@ -7,7 +7,7 @@ import (
"github.com/containerd/containerd/log"
"github.com/docker/docker/libnetwork/datastore"
"github.com/docker/libkv/store/boltdb"
"github.com/docker/docker/libnetwork/internal/kvstore/boltdb"
)
func registerKVStores() {

2
libnetwork/store_linux_test.go
View file

@ -5,7 +5,7 @@ import (
"testing"
"github.com/docker/docker/libnetwork/datastore"
"github.com/docker/libkv/store"
store "github.com/docker/docker/libnetwork/internal/kvstore"
)
func TestBoltdbBackend(t *testing.T) {

2
libnetwork/store_test.go
View file

@ -7,9 +7,9 @@ import (
"github.com/docker/docker/libnetwork/config"
"github.com/docker/docker/libnetwork/datastore"
store "github.com/docker/docker/libnetwork/internal/kvstore"
"github.com/docker/docker/libnetwork/netlabel"
"github.com/docker/docker/libnetwork/options"
"github.com/docker/libkv/store"
)
func testLocalBackend(t *testing.T, provider, url string, storeConfig *store.Config) {

1
vendor.mod
View file

@ -39,7 +39,6 @@ require (
github.com/docker/go-events v0.0.0-20190806004212-e31b211e4f1c
github.com/docker/go-metrics v0.0.1
github.com/docker/go-units v0.5.0
github.com/docker/libkv v0.2.2-0.20211217103745-e480589147e3
github.com/docker/libtrust v0.0.0-20150526203908-9cbd2a1374f4
github.com/fluent/fluent-logger-golang v1.9.0
github.com/godbus/dbus/v5 v5.1.0

2
vendor.sum
View file

@ -531,8 +531,6 @@ github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDD
github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
github.com/docker/libkv v0.2.2-0.20211217103745-e480589147e3 h1:q6MhOaE4xsrl6cAiFYrazobNFSQN6ckhD6Et9zYbcrU=
github.com/docker/libkv v0.2.2-0.20211217103745-e480589147e3/go.mod h1:r5hEwHwW8dr0TFBYGCarMNbrQOiwL1xoqDYZ/JqoTK0=
github.com/docker/libnetwork v0.8.0-dev.2.0.20200917202933-d0951081b35f/go.mod h1:93m0aTqz6z+g32wla4l4WxTrdtvBRmVzYRkYvasA5Z8=
github.com/docker/libtrust v0.0.0-20150114040149-fa567046d9b1/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE=
github.com/docker/libtrust v0.0.0-20150526203908-9cbd2a1374f4 h1:k8TfKGeAcDQFFQOGCQMRN04N4a9YrPlRMMKnzAuvM9Q=

31
vendor/github.com/docker/libkv/.travis.yml generated vendored
View file

@ -1,31 +0,0 @@
language: go
go:
- 1.8.7
# let us have speedy Docker-based Travis workers
sudo: false
before_install:
# Symlink below is needed for Travis CI to work correctly on personal forks of libkv
- ln -s $HOME/gopath/src/github.com/${TRAVIS_REPO_SLUG///libkv/} $HOME/gopath/src/github.com/docker
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
- go get github.com/golang/lint/golint
- go get github.com/GeertJohan/fgt
before_script:
- script/travis_consul.sh 0.6.3
- script/travis_etcd.sh 3.0.0
- script/travis_zk.sh 3.5.4-beta
script:
- ./consul agent -server -bootstrap -advertise=127.0.0.1 -data-dir /tmp/consul -config-file=./config.json 1>/dev/null &
- ./etcd/etcd --listen-client-urls 'http://0.0.0.0:4001' --advertise-client-urls 'http://127.0.0.1:4001' >/dev/null 2>&1 &
- ./zk/bin/zkServer.sh start ./zk/conf/zoo.cfg 1> /dev/null
- script/validate-gofmt
- go vet ./...
- fgt golint ./...
- go test -v -race ./...
- script/coverage
- goveralls -service=travis-ci -coverprofile=goverage.report

191
vendor/github.com/docker/libkv/LICENSE.code generated vendored
View file

@ -1,191 +0,0 @@
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40
vendor/github.com/docker/libkv/MAINTAINERS generated vendored
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@ -1,40 +0,0 @@
# Libkv maintainers file
#
# This file describes who runs the docker/libkv project and how.
# This is a living document - if you see something out of date or missing, speak up!
#
# It is structured to be consumable by both humans and programs.
# To extract its contents programmatically, use any TOML-compliant parser.
#
# This file is compiled into the MAINTAINERS file in docker/opensource.
#
[Org]
[Org."Core maintainers"]
people = [
"aluzzardi",
"sanimej",
"vieux",
]
[people]
# A reference list of all people associated with the project.
# All other sections should refer to people by their canonical key
# in the people section.
# ADD YOURSELF HERE IN ALPHABETICAL ORDER
[people.aluzzardi]
Name = "Andrea Luzzardi"
Email = "al@docker.com"
GitHub = "aluzzardi"
[people.sanimej]
Name = "Santhosh Manohar"
Email = "santhosh@docker.com"
GitHub = "sanimej"
[people.vieux]
Name = "Victor Vieux"
Email = "vieux@docker.com"
GitHub = "vieux"

107
vendor/github.com/docker/libkv/README.md generated vendored
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@ -1,107 +0,0 @@
# libkv
[![GoDoc](https://godoc.org/github.com/docker/libkv?status.png)](https://godoc.org/github.com/docker/libkv)
[![Build Status](https://travis-ci.org/docker/libkv.svg?branch=master)](https://travis-ci.org/docker/libkv)
[![Coverage Status](https://coveralls.io/repos/docker/libkv/badge.svg)](https://coveralls.io/r/docker/libkv)
[![Go Report Card](https://goreportcard.com/badge/github.com/docker/libkv)](https://goreportcard.com/report/github.com/docker/libkv)
`libkv` provides a `Go` native library to store metadata.
The goal of `libkv` is to abstract common store operations for multiple distributed and/or local Key/Value store backends.
For example, you can use it to store your metadata or for service discovery to register machines and endpoints inside your cluster.
You can also easily implement a generic *Leader Election* on top of it (see the [docker/leadership](https://github.com/docker/leadership) repository).
As of now, `libkv` offers support for `Consul`, `Etcd`, `Zookeeper` (**Distributed** store) and `BoltDB` (**Local** store).
## Usage
`libkv` is meant to be used as an abstraction layer over existing distributed Key/Value stores. It is especially useful if you plan to support `consul`, `etcd` and `zookeeper` using the same codebase.
It is ideal if you plan for something written in Go that should support:
- A simple metadata storage, distributed or local
- A lightweight discovery service for your nodes
- A distributed lock mechanism
You can find examples of usage for `libkv` under in `docs/examples.go`. Optionally you can also take a look at the `docker/swarm` or `docker/libnetwork` repositories which are using `docker/libkv` for all the use cases listed above.
## Supported versions
`libkv` supports:
- Consul versions >= `0.5.1` because it uses Sessions with `Delete` behavior for the use of `TTLs` (mimics zookeeper's Ephemeral node support), If you don't plan to use `TTLs`: you can use Consul version `0.4.0+`.
- Etcd versions >= `2.0` because it uses the new `coreos/etcd/client`, this might change in the future as the support for `APIv3` comes along and adds more capabilities.
- Zookeeper versions >= `3.4.5`. Although this might work with previous version but this remains untested as of now.
- Boltdb, which shouldn't be subject to any version dependencies.
## Interface
A **storage backend** in `libkv` should implement (fully or partially) this interface:
```go
type Store interface {
Put(key string, value []byte, options *WriteOptions) error
Get(key string) (*KVPair, error)
Delete(key string) error
Exists(key string) (bool, error)
Watch(key string, stopCh <-chan struct{}) (<-chan *KVPair, error)
WatchTree(directory string, stopCh <-chan struct{}) (<-chan []*KVPair, error)
NewLock(key string, options *LockOptions) (Locker, error)
List(directory string) ([]*KVPair, error)
DeleteTree(directory string) error
AtomicPut(key string, value []byte, previous *KVPair, options *WriteOptions) (bool, *KVPair, error)
AtomicDelete(key string, previous *KVPair) (bool, error)
Close()
}
```
## Compatibility matrix
Backend drivers in `libkv` are generally divided between **local drivers** and **distributed drivers**. Distributed backends offer enhanced capabilities like `Watches` and/or distributed `Locks`.
Local drivers are usually used in complement to the distributed drivers to store informations that only needs to be available locally.
| Calls | Consul | Etcd | Zookeeper | BoltDB |
|-----------------------|:----------:|:------:|:-----------:|:--------:|
| Put | X | X | X | X |
| Get | X | X | X | X |
| Delete | X | X | X | X |
| Exists | X | X | X | X |
| Watch | X | X | X | |
| WatchTree | X | X | X | |
| NewLock (Lock/Unlock) | X | X | X | |
| List | X | X | X | X |
| DeleteTree | X | X | X | X |
| AtomicPut | X | X | X | X |
| Close | X | X | X | X |
## Limitations
Distributed Key/Value stores often have different concepts for managing and formatting keys and their associated values. Even though `libkv` tries to abstract those stores aiming for some consistency, in some cases it can't be applied easily.
Please refer to the `docs/compatibility.md` to see what are the special cases for cross-backend compatibility.
Other than those special cases, you should expect the same experience for basic operations like `Get`/`Put`, etc.
Calls like `WatchTree` may return different events (or number of events) depending on the backend (for now, `Etcd` and `Consul` will likely return more events than `Zookeeper` that you should triage properly). Although you should be able to use it successfully to watch on events in an interchangeable way (see the **docker/leadership** repository or the **pkg/discovery/kv** package in **docker/docker**).
## TLS
Only `Consul` and `etcd` have support for TLS and you should build and provide your own `config.TLS` object to feed the client. Support is planned for `zookeeper`.
## Roadmap
- Make the API nicer to use (using `options`)
- Provide more options (`consistency` for example)
- Improve performance (remove extras `Get`/`List` operations)
- Better key formatting
- New backends?
## Contributing
Want to hack on libkv? [Docker's contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md) apply.
## Copyright and license
Copyright © 2014-2016 Docker, Inc. All rights reserved, except as follows. Code is released under the Apache 2.0 license. The README.md file, and files in the "docs" folder are licensed under the Creative Commons Attribution 4.0 International License under the terms and conditions set forth in the file "LICENSE.docs". You may obtain a duplicate copy of the same license, titled CC-BY-SA-4.0, at http://creativecommons.org/licenses/by/4.0/.

47
vendor/github.com/docker/libkv/store/helpers.go generated vendored
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@ -1,47 +0,0 @@
package store
import (
"strings"
)
// CreateEndpoints creates a list of endpoints given the right scheme
func CreateEndpoints(addrs []string, scheme string) (entries []string) {
for _, addr := range addrs {
entries = append(entries, scheme+"://"+addr)
}
return entries
}
// Normalize the key for each store to the form:
//
// /path/to/key
//
func Normalize(key string) string {
return "/" + join(SplitKey(key))
}
// GetDirectory gets the full directory part of
// the key to the form:
//
// /path/to/
//
func GetDirectory(key string) string {
parts := SplitKey(key)
parts = parts[:len(parts)-1]
return "/" + join(parts)
}
// SplitKey splits the key to extract path informations
func SplitKey(key string) (path []string) {
if strings.Contains(key, "/") {
path = strings.Split(key, "/")
} else {
path = []string{key}
}
return path
}
// join the path parts with '/'
func join(parts []string) string {
return strings.Join(parts, "/")
}

5
vendor/modules.txt vendored
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@ -406,11 +406,6 @@ github.com/docker/go-metrics
# github.com/docker/go-units v0.5.0
## explicit
github.com/docker/go-units
# github.com/docker/libkv v0.2.2-0.20211217103745-e480589147e3
## explicit
github.com/docker/libkv
github.com/docker/libkv/store
github.com/docker/libkv/store/boltdb
# github.com/docker/libtrust v0.0.0-20150526203908-9cbd2a1374f4
## explicit
github.com/docker/libtrust