0e8e8f0f31
Allows for a plugin type that can be used to scrape metrics. This is useful because metrics are not neccessarily at a standard location... `--metrics-addr` must be set, and must currently be a TCP socket. Even if metrics are done via a unix socket, there's no guarentee where the socket may be located on the system, making bind-mounting such a socket into a container difficult (and racey, failure-prone on daemon restart). Metrics plugins side-step this issue by always listening on a unix socket and then bind-mounting that into a known path in the plugin container. Note there has been similar work in the past (and ultimately punted at the time) for consistent access to the Docker API from within a container. Why not add metrics to the Docker API and just provide a plugin with access to the Docker API? Certainly this can be useful, but gives a lot of control/access to a plugin that may only need the metrics. We can look at supporting API plugins separately for this reason. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
480 lines
18 KiB
Go
480 lines
18 KiB
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/docker/docker/integration-cli/cli"
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"github.com/docker/docker/integration-cli/daemon"
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icmd "github.com/docker/docker/pkg/testutil/cmd"
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"github.com/go-check/check"
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)
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var (
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pluginProcessName = "sample-volume-plugin"
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pName = "tiborvass/sample-volume-plugin"
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npName = "tiborvass/test-docker-netplugin"
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pTag = "latest"
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pNameWithTag = pName + ":" + pTag
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npNameWithTag = npName + ":" + pTag
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)
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func (s *DockerSuite) TestPluginBasicOps(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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_, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", pNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err := dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pName)
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c.Assert(out, checker.Contains, pTag)
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c.Assert(out, checker.Contains, "true")
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id, _, err := dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", pNameWithTag)
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id = strings.TrimSpace(id)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", pNameWithTag)
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c.Assert(err, checker.NotNil)
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c.Assert(out, checker.Contains, "is enabled")
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_, _, err = dockerCmdWithError("plugin", "disable", pNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", pNameWithTag)
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pNameWithTag)
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_, err = os.Stat(filepath.Join(testEnv.DockerBasePath(), "plugins", id))
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if !os.IsNotExist(err) {
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c.Fatal(err)
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}
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}
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func (s *DockerSuite) TestPluginForceRemove(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", pNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", pNameWithTag)
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c.Assert(out, checker.Contains, "is enabled")
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out, _, err = dockerCmdWithError("plugin", "remove", "--force", pNameWithTag)
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pNameWithTag)
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}
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func (s *DockerSuite) TestPluginActive(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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_, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", pNameWithTag)
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c.Assert(err, checker.IsNil)
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_, _, err = dockerCmdWithError("volume", "create", "-d", pNameWithTag, "--name", "testvol1")
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c.Assert(err, checker.IsNil)
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out, _, err := dockerCmdWithError("plugin", "disable", pNameWithTag)
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c.Assert(out, checker.Contains, "in use")
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_, _, err = dockerCmdWithError("volume", "rm", "testvol1")
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c.Assert(err, checker.IsNil)
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_, _, err = dockerCmdWithError("plugin", "disable", pNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", pNameWithTag)
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pNameWithTag)
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}
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func (s *DockerSuite) TestPluginActiveNetwork(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", npNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("network", "create", "-d", npNameWithTag, "test")
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c.Assert(err, checker.IsNil)
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nID := strings.TrimSpace(out)
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out, _, err = dockerCmdWithError("plugin", "remove", npNameWithTag)
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c.Assert(out, checker.Contains, "is in use")
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_, _, err = dockerCmdWithError("network", "rm", nID)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", npNameWithTag)
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c.Assert(out, checker.Contains, "is enabled")
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_, _, err = dockerCmdWithError("plugin", "disable", npNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", npNameWithTag)
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, npNameWithTag)
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}
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func (s *DockerSuite) TestPluginInstallDisable(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", "--disable", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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out, _, err = dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, "false")
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out, _, err = dockerCmdWithError("plugin", "enable", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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out, _, err = dockerCmdWithError("plugin", "disable", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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out, _, err = dockerCmdWithError("plugin", "remove", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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}
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func (s *DockerSuite) TestPluginInstallDisableVolumeLs(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", "--disable", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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dockerCmd(c, "volume", "ls")
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}
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func (s *DockerSuite) TestPluginSet(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _ := dockerCmd(c, "plugin", "install", "--grant-all-permissions", "--disable", pName)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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env, _ := dockerCmd(c, "plugin", "inspect", "-f", "{{.Settings.Env}}", pName)
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c.Assert(strings.TrimSpace(env), checker.Equals, "[DEBUG=0]")
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dockerCmd(c, "plugin", "set", pName, "DEBUG=1")
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env, _ = dockerCmd(c, "plugin", "inspect", "-f", "{{.Settings.Env}}", pName)
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c.Assert(strings.TrimSpace(env), checker.Equals, "[DEBUG=1]")
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}
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func (s *DockerSuite) TestPluginInstallArgs(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _ := dockerCmd(c, "plugin", "install", "--grant-all-permissions", "--disable", pName, "DEBUG=1")
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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env, _ := dockerCmd(c, "plugin", "inspect", "-f", "{{.Settings.Env}}", pName)
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c.Assert(strings.TrimSpace(env), checker.Equals, "[DEBUG=1]")
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}
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func (s *DockerRegistrySuite) TestPluginInstallImage(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64)
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repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
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// tag the image to upload it to the private registry
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dockerCmd(c, "tag", "busybox", repoName)
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// push the image to the registry
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dockerCmd(c, "push", repoName)
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out, _, err := dockerCmdWithError("plugin", "install", repoName)
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c.Assert(err, checker.NotNil)
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c.Assert(out, checker.Contains, `Encountered remote "application/vnd.docker.container.image.v1+json"(image) when fetching`)
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}
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func (s *DockerSuite) TestPluginEnableDisableNegative(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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out, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, pName)
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out, _, err = dockerCmdWithError("plugin", "enable", pName)
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c.Assert(err, checker.NotNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, "already enabled")
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_, _, err = dockerCmdWithError("plugin", "disable", pName)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "disable", pName)
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c.Assert(err, checker.NotNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, "already disabled")
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_, _, err = dockerCmdWithError("plugin", "remove", pName)
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c.Assert(err, checker.IsNil)
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}
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func (s *DockerSuite) TestPluginCreate(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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name := "foo/bar-driver"
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temp, err := ioutil.TempDir("", "foo")
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c.Assert(err, checker.IsNil)
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defer os.RemoveAll(temp)
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data := `{"description": "foo plugin"}`
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err = ioutil.WriteFile(filepath.Join(temp, "config.json"), []byte(data), 0644)
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c.Assert(err, checker.IsNil)
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err = os.MkdirAll(filepath.Join(temp, "rootfs"), 0700)
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c.Assert(err, checker.IsNil)
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out, _, err := dockerCmdWithError("plugin", "create", name, temp)
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, name)
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out, _, err = dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, name)
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out, _, err = dockerCmdWithError("plugin", "create", name, temp)
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c.Assert(err, checker.NotNil)
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c.Assert(out, checker.Contains, "already exist")
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out, _, err = dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, name)
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// The output will consists of one HEADER line and one line of foo/bar-driver
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c.Assert(len(strings.Split(strings.TrimSpace(out), "\n")), checker.Equals, 2)
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}
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func (s *DockerSuite) TestPluginInspect(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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_, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", pNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err := dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pName)
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c.Assert(out, checker.Contains, pTag)
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c.Assert(out, checker.Contains, "true")
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// Find the ID first
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out, _, err = dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", pNameWithTag)
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c.Assert(err, checker.IsNil)
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id := strings.TrimSpace(out)
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c.Assert(id, checker.Not(checker.Equals), "")
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// Long form
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out, _, err = dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", id)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Equals, id)
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// Short form
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out, _, err = dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", id[:5])
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Equals, id)
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// Name with tag form
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out, _, err = dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", pNameWithTag)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Equals, id)
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// Name without tag form
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out, _, err = dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", pName)
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c.Assert(err, checker.IsNil)
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c.Assert(strings.TrimSpace(out), checker.Equals, id)
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_, _, err = dockerCmdWithError("plugin", "disable", pNameWithTag)
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "remove", pNameWithTag)
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pNameWithTag)
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// After remove nothing should be found
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_, _, err = dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", id[:5])
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c.Assert(err, checker.NotNil)
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}
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// Test case for https://github.com/docker/docker/pull/29186#discussion_r91277345
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func (s *DockerSuite) TestPluginInspectOnWindows(c *check.C) {
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// This test should work on Windows only
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testRequires(c, DaemonIsWindows)
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out, _, err := dockerCmdWithError("plugin", "inspect", "foobar")
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c.Assert(err, checker.NotNil)
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c.Assert(out, checker.Contains, "plugins are not supported on this platform")
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c.Assert(err.Error(), checker.Contains, "plugins are not supported on this platform")
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}
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func (s *DockerTrustSuite) TestPluginTrustedInstall(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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trustedName := s.setupTrustedplugin(c, pNameWithTag, "trusted-plugin-install")
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cli.Docker(cli.Args("plugin", "install", "--grant-all-permissions", trustedName), trustedCmd).Assert(c, icmd.Expected{
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Out: trustedName,
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})
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out := cli.DockerCmd(c, "plugin", "ls").Combined()
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c.Assert(out, checker.Contains, "true")
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out = cli.DockerCmd(c, "plugin", "disable", trustedName).Combined()
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c.Assert(strings.TrimSpace(out), checker.Contains, trustedName)
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out = cli.DockerCmd(c, "plugin", "enable", trustedName).Combined()
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c.Assert(strings.TrimSpace(out), checker.Contains, trustedName)
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out = cli.DockerCmd(c, "plugin", "rm", "-f", trustedName).Combined()
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c.Assert(strings.TrimSpace(out), checker.Contains, trustedName)
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// Try untrusted pull to ensure we pushed the tag to the registry
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cli.Docker(cli.Args("plugin", "install", "--disable-content-trust=true", "--grant-all-permissions", trustedName), trustedCmd).Assert(c, SuccessDownloaded)
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out = cli.DockerCmd(c, "plugin", "ls").Combined()
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c.Assert(out, checker.Contains, "true")
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}
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func (s *DockerTrustSuite) TestPluginUntrustedInstall(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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pluginName := fmt.Sprintf("%v/dockercliuntrusted/plugintest:latest", privateRegistryURL)
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// install locally and push to private registry
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cli.DockerCmd(c, "plugin", "install", "--grant-all-permissions", "--alias", pluginName, pNameWithTag)
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cli.DockerCmd(c, "plugin", "push", pluginName)
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cli.DockerCmd(c, "plugin", "rm", "-f", pluginName)
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// Try trusted install on untrusted plugin
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cli.Docker(cli.Args("plugin", "install", "--grant-all-permissions", pluginName), trustedCmd).Assert(c, icmd.Expected{
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ExitCode: 1,
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Err: "Error: remote trust data does not exist",
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})
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}
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func (s *DockerSuite) TestPluginIDPrefix(c *check.C) {
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testRequires(c, DaemonIsLinux, IsAmd64, Network)
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_, _, err := dockerCmdWithError("plugin", "install", "--disable", "--grant-all-permissions", pNameWithTag)
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c.Assert(err, checker.IsNil)
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// Find ID first
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id, _, err := dockerCmdWithError("plugin", "inspect", "-f", "{{.Id}}", pNameWithTag)
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id = strings.TrimSpace(id)
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c.Assert(err, checker.IsNil)
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// List current state
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out, _, err := dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pName)
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c.Assert(out, checker.Contains, pTag)
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c.Assert(out, checker.Contains, "false")
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env, _ := dockerCmd(c, "plugin", "inspect", "-f", "{{.Settings.Env}}", id[:5])
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c.Assert(strings.TrimSpace(env), checker.Equals, "[DEBUG=0]")
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dockerCmd(c, "plugin", "set", id[:5], "DEBUG=1")
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env, _ = dockerCmd(c, "plugin", "inspect", "-f", "{{.Settings.Env}}", id[:5])
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c.Assert(strings.TrimSpace(env), checker.Equals, "[DEBUG=1]")
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// Enable
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_, _, err = dockerCmdWithError("plugin", "enable", id[:5])
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pName)
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c.Assert(out, checker.Contains, pTag)
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c.Assert(out, checker.Contains, "true")
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// Disable
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_, _, err = dockerCmdWithError("plugin", "disable", id[:5])
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c.Assert(err, checker.IsNil)
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out, _, err = dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Contains, pName)
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c.Assert(out, checker.Contains, pTag)
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c.Assert(out, checker.Contains, "false")
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// Remove
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out, _, err = dockerCmdWithError("plugin", "remove", id[:5])
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c.Assert(err, checker.IsNil)
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// List returns none
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out, _, err = dockerCmdWithError("plugin", "ls")
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c.Assert(err, checker.IsNil)
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c.Assert(out, checker.Not(checker.Contains), pName)
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c.Assert(out, checker.Not(checker.Contains), pTag)
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}
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func (s *DockerSuite) TestPluginListDefaultFormat(c *check.C) {
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testRequires(c, DaemonIsLinux, Network, IsAmd64)
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config, err := ioutil.TempDir("", "config-file-")
|
|
c.Assert(err, check.IsNil)
|
|
defer os.RemoveAll(config)
|
|
|
|
err = ioutil.WriteFile(filepath.Join(config, "config.json"), []byte(`{"pluginsFormat": "raw"}`), 0644)
|
|
c.Assert(err, check.IsNil)
|
|
|
|
out, _ := dockerCmd(c, "plugin", "install", "--grant-all-permissions", pName)
|
|
c.Assert(strings.TrimSpace(out), checker.Contains, pName)
|
|
|
|
out, _ = dockerCmd(c, "plugin", "inspect", "--format", "{{.ID}}", pNameWithTag)
|
|
id := strings.TrimSpace(out)
|
|
|
|
// We expect the format to be in `raw + --no-trunc`
|
|
expectedOutput := fmt.Sprintf(`plugin_id: %s
|
|
name: %s
|
|
description: A sample volume plugin for Docker
|
|
enabled: true`, id, pNameWithTag)
|
|
|
|
out, _ = dockerCmd(c, "--config", config, "plugin", "ls", "--no-trunc")
|
|
c.Assert(strings.TrimSpace(out), checker.Contains, expectedOutput)
|
|
}
|
|
|
|
func (s *DockerSuite) TestPluginUpgrade(c *check.C) {
|
|
testRequires(c, DaemonIsLinux, Network, SameHostDaemon, IsAmd64)
|
|
plugin := "cpuguy83/docker-volume-driver-plugin-local:latest"
|
|
pluginV2 := "cpuguy83/docker-volume-driver-plugin-local:v2"
|
|
|
|
dockerCmd(c, "plugin", "install", "--grant-all-permissions", plugin)
|
|
dockerCmd(c, "volume", "create", "--driver", plugin, "bananas")
|
|
dockerCmd(c, "run", "--rm", "-v", "bananas:/apple", "busybox", "sh", "-c", "touch /apple/core")
|
|
|
|
out, _, err := dockerCmdWithError("plugin", "upgrade", "--grant-all-permissions", plugin, pluginV2)
|
|
c.Assert(err, checker.NotNil, check.Commentf(out))
|
|
c.Assert(out, checker.Contains, "disabled before upgrading")
|
|
|
|
out, _ = dockerCmd(c, "plugin", "inspect", "--format={{.ID}}", plugin)
|
|
id := strings.TrimSpace(out)
|
|
|
|
// make sure "v2" does not exists
|
|
_, err = os.Stat(filepath.Join(testEnv.DockerBasePath(), "plugins", id, "rootfs", "v2"))
|
|
c.Assert(os.IsNotExist(err), checker.True, check.Commentf(out))
|
|
|
|
dockerCmd(c, "plugin", "disable", "-f", plugin)
|
|
dockerCmd(c, "plugin", "upgrade", "--grant-all-permissions", "--skip-remote-check", plugin, pluginV2)
|
|
|
|
// make sure "v2" file exists
|
|
_, err = os.Stat(filepath.Join(testEnv.DockerBasePath(), "plugins", id, "rootfs", "v2"))
|
|
c.Assert(err, checker.IsNil)
|
|
|
|
dockerCmd(c, "plugin", "enable", plugin)
|
|
dockerCmd(c, "volume", "inspect", "bananas")
|
|
dockerCmd(c, "run", "--rm", "-v", "bananas:/apple", "busybox", "sh", "-c", "ls -lh /apple/core")
|
|
}
|
|
|
|
func (s *DockerSuite) TestPluginMetricsCollector(c *check.C) {
|
|
testRequires(c, DaemonIsLinux, Network, SameHostDaemon, IsAmd64)
|
|
d := daemon.New(c, dockerBinary, dockerdBinary, daemon.Config{})
|
|
d.Start(c)
|
|
defer d.Stop(c)
|
|
|
|
name := "cpuguy83/docker-metrics-plugin-test:latest"
|
|
r := cli.Docker(cli.Args("plugin", "install", "--grant-all-permissions", name), cli.Daemon(d))
|
|
c.Assert(r.Error, checker.IsNil, check.Commentf(r.Combined()))
|
|
|
|
// plugin lisens on localhost:19393 and proxies the metrics
|
|
resp, err := http.Get("http://localhost:19393/metrics")
|
|
c.Assert(err, checker.IsNil)
|
|
defer resp.Body.Close()
|
|
|
|
b, err := ioutil.ReadAll(resp.Body)
|
|
c.Assert(err, checker.IsNil)
|
|
// check that a known metric is there... don't epect this metric to change over time.. probably safe
|
|
c.Assert(string(b), checker.Contains, "container_actions")
|
|
}
|