405 lines
14 KiB
Go
405 lines
14 KiB
Go
package main
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import (
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"archive/tar"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"reflect"
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"regexp"
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"sort"
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"strings"
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"time"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/docker/docker/integration-cli/cli/build"
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"github.com/go-check/check"
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"github.com/opencontainers/go-digest"
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"gotest.tools/icmd"
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)
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// save a repo using gz compression and try to load it using stdout
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func (s *DockerSuite) TestSaveXzAndLoadRepoStdout(c *check.C) {
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testRequires(c, DaemonIsLinux)
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name := "test-save-xz-and-load-repo-stdout"
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dockerCmd(c, "run", "--name", name, "busybox", "true")
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repoName := "foobar-save-load-test-xz-gz"
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out, _ := dockerCmd(c, "commit", name, repoName)
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dockerCmd(c, "inspect", repoName)
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repoTarball, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", repoName),
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exec.Command("xz", "-c"),
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exec.Command("gzip", "-c"))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save repo: %v %v", out, err))
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deleteImages(repoName)
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icmd.RunCmd(icmd.Cmd{
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Command: []string{dockerBinary, "load"},
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Stdin: strings.NewReader(repoTarball),
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}).Assert(c, icmd.Expected{
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ExitCode: 1,
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})
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after, _, err := dockerCmdWithError("inspect", repoName)
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c.Assert(err, checker.NotNil, check.Commentf("the repo should not exist: %v", after))
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}
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// save a repo using xz+gz compression and try to load it using stdout
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func (s *DockerSuite) TestSaveXzGzAndLoadRepoStdout(c *check.C) {
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testRequires(c, DaemonIsLinux)
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name := "test-save-xz-gz-and-load-repo-stdout"
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dockerCmd(c, "run", "--name", name, "busybox", "true")
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repoName := "foobar-save-load-test-xz-gz"
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dockerCmd(c, "commit", name, repoName)
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dockerCmd(c, "inspect", repoName)
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", repoName),
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exec.Command("xz", "-c"),
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exec.Command("gzip", "-c"))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save repo: %v %v", out, err))
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deleteImages(repoName)
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icmd.RunCmd(icmd.Cmd{
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Command: []string{dockerBinary, "load"},
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Stdin: strings.NewReader(out),
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}).Assert(c, icmd.Expected{
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ExitCode: 1,
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})
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after, _, err := dockerCmdWithError("inspect", repoName)
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c.Assert(err, checker.NotNil, check.Commentf("the repo should not exist: %v", after))
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}
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func (s *DockerSuite) TestSaveSingleTag(c *check.C) {
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testRequires(c, DaemonIsLinux)
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repoName := "foobar-save-single-tag-test"
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dockerCmd(c, "tag", "busybox:latest", fmt.Sprintf("%v:latest", repoName))
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out, _ := dockerCmd(c, "images", "-q", "--no-trunc", repoName)
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cleanedImageID := strings.TrimSpace(out)
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", fmt.Sprintf("%v:latest", repoName)),
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exec.Command("tar", "t"),
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exec.Command("grep", "-E", fmt.Sprintf("(^repositories$|%v)", cleanedImageID)))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID and 'repositories' file: %s, %v", out, err))
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}
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func (s *DockerSuite) TestSaveCheckTimes(c *check.C) {
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testRequires(c, DaemonIsLinux)
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repoName := "busybox:latest"
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out, _ := dockerCmd(c, "inspect", repoName)
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var data []struct {
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ID string
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Created time.Time
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}
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err := json.Unmarshal([]byte(out), &data)
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c.Assert(err, checker.IsNil, check.Commentf("failed to marshal from %q: err %v", repoName, err))
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c.Assert(len(data), checker.Not(checker.Equals), 0, check.Commentf("failed to marshal the data from %q", repoName))
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tarTvTimeFormat := "2006-01-02 15:04"
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out, err = RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", repoName),
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exec.Command("tar", "tv"),
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exec.Command("grep", "-E", fmt.Sprintf("%s %s", data[0].Created.Format(tarTvTimeFormat), digest.Digest(data[0].ID).Hex())))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID and 'repositories' file: %s, %v", out, err))
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}
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func (s *DockerSuite) TestSaveImageId(c *check.C) {
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testRequires(c, DaemonIsLinux)
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repoName := "foobar-save-image-id-test"
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dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v:latest", repoName))
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out, _ := dockerCmd(c, "images", "-q", "--no-trunc", repoName)
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cleanedLongImageID := strings.TrimPrefix(strings.TrimSpace(out), "sha256:")
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out, _ = dockerCmd(c, "images", "-q", repoName)
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cleanedShortImageID := strings.TrimSpace(out)
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// Make sure IDs are not empty
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c.Assert(cleanedLongImageID, checker.Not(check.Equals), "", check.Commentf("Id should not be empty."))
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c.Assert(cleanedShortImageID, checker.Not(check.Equals), "", check.Commentf("Id should not be empty."))
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saveCmd := exec.Command(dockerBinary, "save", cleanedShortImageID)
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tarCmd := exec.Command("tar", "t")
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var err error
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tarCmd.Stdin, err = saveCmd.StdoutPipe()
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c.Assert(err, checker.IsNil, check.Commentf("cannot set stdout pipe for tar: %v", err))
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grepCmd := exec.Command("grep", cleanedLongImageID)
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grepCmd.Stdin, err = tarCmd.StdoutPipe()
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c.Assert(err, checker.IsNil, check.Commentf("cannot set stdout pipe for grep: %v", err))
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c.Assert(tarCmd.Start(), checker.IsNil, check.Commentf("tar failed with error: %v", err))
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c.Assert(saveCmd.Start(), checker.IsNil, check.Commentf("docker save failed with error: %v", err))
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defer func() {
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saveCmd.Wait()
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tarCmd.Wait()
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dockerCmd(c, "rmi", repoName)
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}()
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out, _, err = runCommandWithOutput(grepCmd)
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c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID: %s, %v", out, err))
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}
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// save a repo and try to load it using flags
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func (s *DockerSuite) TestSaveAndLoadRepoFlags(c *check.C) {
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testRequires(c, DaemonIsLinux)
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name := "test-save-and-load-repo-flags"
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dockerCmd(c, "run", "--name", name, "busybox", "true")
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repoName := "foobar-save-load-test"
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deleteImages(repoName)
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dockerCmd(c, "commit", name, repoName)
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before, _ := dockerCmd(c, "inspect", repoName)
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", repoName),
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exec.Command(dockerBinary, "load"))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))
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after, _ := dockerCmd(c, "inspect", repoName)
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c.Assert(before, checker.Equals, after, check.Commentf("inspect is not the same after a save / load"))
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}
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func (s *DockerSuite) TestSaveWithNoExistImage(c *check.C) {
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testRequires(c, DaemonIsLinux)
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imgName := "foobar-non-existing-image"
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out, _, err := dockerCmdWithError("save", "-o", "test-img.tar", imgName)
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c.Assert(err, checker.NotNil, check.Commentf("save image should fail for non-existing image"))
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c.Assert(out, checker.Contains, fmt.Sprintf("No such image: %s", imgName))
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}
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func (s *DockerSuite) TestSaveMultipleNames(c *check.C) {
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testRequires(c, DaemonIsLinux)
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repoName := "foobar-save-multi-name-test"
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// Make one image
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dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v-one:latest", repoName))
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// Make two images
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dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v-two:latest", repoName))
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", fmt.Sprintf("%v-one", repoName), fmt.Sprintf("%v-two:latest", repoName)),
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exec.Command("tar", "xO", "repositories"),
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exec.Command("grep", "-q", "-E", "(-one|-two)"),
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)
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c.Assert(err, checker.IsNil, check.Commentf("failed to save multiple repos: %s, %v", out, err))
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}
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func (s *DockerSuite) TestSaveRepoWithMultipleImages(c *check.C) {
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testRequires(c, DaemonIsLinux)
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makeImage := func(from string, tag string) string {
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var (
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out string
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)
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out, _ = dockerCmd(c, "run", "-d", from, "true")
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "commit", cleanedContainerID, tag)
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imageID := strings.TrimSpace(out)
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return imageID
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}
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repoName := "foobar-save-multi-images-test"
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tagFoo := repoName + ":foo"
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tagBar := repoName + ":bar"
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idFoo := makeImage("busybox:latest", tagFoo)
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idBar := makeImage("busybox:latest", tagBar)
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deleteImages(repoName)
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// create the archive
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", repoName, "busybox:latest"),
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exec.Command("tar", "t"))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save multiple images: %s, %v", out, err))
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lines := strings.Split(strings.TrimSpace(out), "\n")
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var actual []string
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for _, l := range lines {
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if regexp.MustCompile("^[a-f0-9]{64}\\.json$").Match([]byte(l)) {
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actual = append(actual, strings.TrimSuffix(l, ".json"))
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}
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}
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// make the list of expected layers
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out = inspectField(c, "busybox:latest", "Id")
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expected := []string{strings.TrimSpace(out), idFoo, idBar}
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// prefixes are not in tar
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for i := range expected {
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expected[i] = digest.Digest(expected[i]).Hex()
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}
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sort.Strings(actual)
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sort.Strings(expected)
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c.Assert(actual, checker.DeepEquals, expected, check.Commentf("archive does not contains the right layers: got %v, expected %v, output: %q", actual, expected, out))
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}
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// Issue #6722 #5892 ensure directories are included in changes
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func (s *DockerSuite) TestSaveDirectoryPermissions(c *check.C) {
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testRequires(c, DaemonIsLinux)
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layerEntries := []string{"opt/", "opt/a/", "opt/a/b/", "opt/a/b/c"}
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layerEntriesAUFS := []string{"./", ".wh..wh.aufs", ".wh..wh.orph/", ".wh..wh.plnk/", "opt/", "opt/a/", "opt/a/b/", "opt/a/b/c"}
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name := "save-directory-permissions"
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tmpDir, err := ioutil.TempDir("", "save-layers-with-directories")
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c.Assert(err, checker.IsNil, check.Commentf("failed to create temporary directory: %s", err))
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extractionDirectory := filepath.Join(tmpDir, "image-extraction-dir")
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os.Mkdir(extractionDirectory, 0777)
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defer os.RemoveAll(tmpDir)
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buildImageSuccessfully(c, name, build.WithDockerfile(`FROM busybox
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RUN adduser -D user && mkdir -p /opt/a/b && chown -R user:user /opt/a
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RUN touch /opt/a/b/c && chown user:user /opt/a/b/c`))
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", name),
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exec.Command("tar", "-xf", "-", "-C", extractionDirectory),
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)
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c.Assert(err, checker.IsNil, check.Commentf("failed to save and extract image: %s", out))
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dirs, err := ioutil.ReadDir(extractionDirectory)
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c.Assert(err, checker.IsNil, check.Commentf("failed to get a listing of the layer directories: %s", err))
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found := false
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for _, entry := range dirs {
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var entriesSansDev []string
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if entry.IsDir() {
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layerPath := filepath.Join(extractionDirectory, entry.Name(), "layer.tar")
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f, err := os.Open(layerPath)
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c.Assert(err, checker.IsNil, check.Commentf("failed to open %s: %s", layerPath, err))
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defer f.Close()
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entries, err := listTar(f)
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for _, e := range entries {
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if !strings.Contains(e, "dev/") {
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entriesSansDev = append(entriesSansDev, e)
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}
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}
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c.Assert(err, checker.IsNil, check.Commentf("encountered error while listing tar entries: %s", err))
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if reflect.DeepEqual(entriesSansDev, layerEntries) || reflect.DeepEqual(entriesSansDev, layerEntriesAUFS) {
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found = true
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break
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}
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}
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}
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c.Assert(found, checker.Equals, true, check.Commentf("failed to find the layer with the right content listing"))
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}
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func listTar(f io.Reader) ([]string, error) {
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tr := tar.NewReader(f)
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var entries []string
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for {
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th, err := tr.Next()
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if err == io.EOF {
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// end of tar archive
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return entries, nil
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}
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if err != nil {
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return entries, err
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}
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entries = append(entries, th.Name)
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}
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}
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// Test loading a weird image where one of the layers is of zero size.
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// The layer.tar file is actually zero bytes, no padding or anything else.
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// See issue: 18170
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func (s *DockerSuite) TestLoadZeroSizeLayer(c *check.C) {
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// this will definitely not work if using remote daemon
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// very weird test
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testRequires(c, DaemonIsLinux, testEnv.IsLocalDaemon)
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dockerCmd(c, "load", "-i", "testdata/emptyLayer.tar")
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}
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func (s *DockerSuite) TestSaveLoadParents(c *check.C) {
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testRequires(c, DaemonIsLinux)
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makeImage := func(from string, addfile string) string {
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var (
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out string
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)
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out, _ = dockerCmd(c, "run", "-d", from, "touch", addfile)
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cleanedContainerID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "commit", cleanedContainerID)
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imageID := strings.TrimSpace(out)
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dockerCmd(c, "rm", "-f", cleanedContainerID)
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return imageID
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}
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idFoo := makeImage("busybox", "foo")
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idBar := makeImage(idFoo, "bar")
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tmpDir, err := ioutil.TempDir("", "save-load-parents")
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c.Assert(err, checker.IsNil)
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defer os.RemoveAll(tmpDir)
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c.Log("tmpdir", tmpDir)
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outfile := filepath.Join(tmpDir, "out.tar")
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dockerCmd(c, "save", "-o", outfile, idBar, idFoo)
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dockerCmd(c, "rmi", idBar)
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dockerCmd(c, "load", "-i", outfile)
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inspectOut := inspectField(c, idBar, "Parent")
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c.Assert(inspectOut, checker.Equals, idFoo)
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inspectOut = inspectField(c, idFoo, "Parent")
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c.Assert(inspectOut, checker.Equals, "")
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}
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func (s *DockerSuite) TestSaveLoadNoTag(c *check.C) {
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testRequires(c, DaemonIsLinux)
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name := "saveloadnotag"
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buildImageSuccessfully(c, name, build.WithDockerfile("FROM busybox\nENV foo=bar"))
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id := inspectField(c, name, "Id")
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// Test to make sure that save w/o name just shows imageID during load
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out, err := RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", id),
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exec.Command(dockerBinary, "load"))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))
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// Should not show 'name' but should show the image ID during the load
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c.Assert(out, checker.Not(checker.Contains), "Loaded image: ")
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c.Assert(out, checker.Contains, "Loaded image ID:")
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c.Assert(out, checker.Contains, id)
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// Test to make sure that save by name shows that name during load
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out, err = RunCommandPipelineWithOutput(
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exec.Command(dockerBinary, "save", name),
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exec.Command(dockerBinary, "load"))
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c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))
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c.Assert(out, checker.Contains, "Loaded image: "+name+":latest")
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c.Assert(out, checker.Not(checker.Contains), "Loaded image ID:")
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}
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