| package main |
| |
| import ( |
| "fmt" |
| "regexp" |
| "strings" |
| "time" |
| |
| "github.com/docker/distribution/digest" |
| "github.com/docker/docker/pkg/integration/checker" |
| "github.com/go-check/check" |
| ) |
| |
| // TestPullFromCentralRegistry pulls an image from the central registry and verifies that the client |
| // prints all expected output. |
| func (s *DockerHubPullSuite) TestPullFromCentralRegistry(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| out := s.Cmd(c, "pull", "hello-world") |
| defer deleteImages("hello-world") |
| |
| c.Assert(out, checker.Contains, "Using default tag: latest", check.Commentf("expected the 'latest' tag to be automatically assumed")) |
| c.Assert(out, checker.Contains, "Pulling from library/hello-world", check.Commentf("expected the 'library/' prefix to be automatically assumed")) |
| c.Assert(out, checker.Contains, "Downloaded newer image for hello-world:latest") |
| |
| matches := regexp.MustCompile(`Digest: (.+)\n`).FindAllStringSubmatch(out, -1) |
| c.Assert(len(matches), checker.Equals, 1, check.Commentf("expected exactly one image digest in the output")) |
| c.Assert(len(matches[0]), checker.Equals, 2, check.Commentf("unexpected number of submatches for the digest")) |
| _, err := digest.ParseDigest(matches[0][1]) |
| c.Check(err, checker.IsNil, check.Commentf("invalid digest %q in output", matches[0][1])) |
| |
| // We should have a single entry in images. |
| img := strings.TrimSpace(s.Cmd(c, "images")) |
| splitImg := strings.Split(img, "\n") |
| c.Assert(splitImg, checker.HasLen, 2) |
| c.Assert(splitImg[1], checker.Matches, `hello-world\s+latest.*?`, check.Commentf("invalid output for `docker images` (expected image and tag name")) |
| } |
| |
| // TestPullNonExistingImage pulls non-existing images from the central registry, with different |
| // combinations of implicit tag and library prefix. |
| func (s *DockerHubPullSuite) TestPullNonExistingImage(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| for _, e := range []struct { |
| Repo string |
| Alias string |
| }{ |
| {"library/asdfasdf", "asdfasdf:foobar"}, |
| {"library/asdfasdf", "library/asdfasdf:foobar"}, |
| {"library/asdfasdf", "asdfasdf"}, |
| {"library/asdfasdf", "asdfasdf:latest"}, |
| {"library/asdfasdf", "library/asdfasdf"}, |
| {"library/asdfasdf", "library/asdfasdf:latest"}, |
| } { |
| out, err := s.CmdWithError("pull", e.Alias) |
| c.Assert(err, checker.NotNil, check.Commentf("expected non-zero exit status when pulling non-existing image: %s", out)) |
| // Hub returns 401 rather than 404 for nonexistent repos over |
| // the v2 protocol - but we should end up falling back to v1, |
| // which does return a 404. |
| c.Assert(out, checker.Contains, fmt.Sprintf("Error: image %s not found", e.Repo), check.Commentf("expected image not found error messages")) |
| |
| // pull -a on a nonexistent registry should fall back as well |
| if !strings.ContainsRune(e.Alias, ':') { |
| out, err := s.CmdWithError("pull", "-a", e.Alias) |
| c.Assert(err, checker.NotNil, check.Commentf("expected non-zero exit status when pulling non-existing image: %s", out)) |
| c.Assert(out, checker.Contains, fmt.Sprintf("Error: image %s not found", e.Repo), check.Commentf("expected image not found error messages")) |
| c.Assert(out, checker.Not(checker.Contains), "unauthorized", check.Commentf(`message should not contain "unauthorized"`)) |
| } |
| } |
| |
| } |
| |
| // TestPullFromCentralRegistryImplicitRefParts pulls an image from the central registry and verifies |
| // that pulling the same image with different combinations of implicit elements of the the image |
| // reference (tag, repository, central registry url, ...) doesn't trigger a new pull nor leads to |
| // multiple images. |
| func (s *DockerHubPullSuite) TestPullFromCentralRegistryImplicitRefParts(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| s.Cmd(c, "pull", "hello-world") |
| defer deleteImages("hello-world") |
| |
| for _, i := range []string{ |
| "hello-world", |
| "hello-world:latest", |
| "library/hello-world", |
| "library/hello-world:latest", |
| "docker.io/library/hello-world", |
| "index.docker.io/library/hello-world", |
| } { |
| out := s.Cmd(c, "pull", i) |
| c.Assert(out, checker.Contains, "Image is up to date for hello-world:latest") |
| } |
| |
| // We should have a single entry in images. |
| img := strings.TrimSpace(s.Cmd(c, "images")) |
| splitImg := strings.Split(img, "\n") |
| c.Assert(splitImg, checker.HasLen, 2) |
| c.Assert(splitImg[1], checker.Matches, `hello-world\s+latest.*?`, check.Commentf("invalid output for `docker images` (expected image and tag name")) |
| } |
| |
| // TestPullScratchNotAllowed verifies that pulling 'scratch' is rejected. |
| func (s *DockerHubPullSuite) TestPullScratchNotAllowed(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| out, err := s.CmdWithError("pull", "scratch") |
| c.Assert(err, checker.NotNil, check.Commentf("expected pull of scratch to fail")) |
| c.Assert(out, checker.Contains, "'scratch' is a reserved name") |
| c.Assert(out, checker.Not(checker.Contains), "Pulling repository scratch") |
| } |
| |
| // TestPullAllTagsFromCentralRegistry pulls using `all-tags` for a given image and verifies that it |
| // results in more images than a naked pull. |
| func (s *DockerHubPullSuite) TestPullAllTagsFromCentralRegistry(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| s.Cmd(c, "pull", "busybox") |
| outImageCmd := s.Cmd(c, "images", "busybox") |
| splitOutImageCmd := strings.Split(strings.TrimSpace(outImageCmd), "\n") |
| c.Assert(splitOutImageCmd, checker.HasLen, 2) |
| |
| s.Cmd(c, "pull", "--all-tags=true", "busybox") |
| outImageAllTagCmd := s.Cmd(c, "images", "busybox") |
| linesCount := strings.Count(outImageAllTagCmd, "\n") |
| c.Assert(linesCount, checker.GreaterThan, 2, check.Commentf("pulling all tags should provide more than two images, got %s", outImageAllTagCmd)) |
| |
| // Verify that the line for 'busybox:latest' is left unchanged. |
| var latestLine string |
| for _, line := range strings.Split(outImageAllTagCmd, "\n") { |
| if strings.HasPrefix(line, "busybox") && strings.Contains(line, "latest") { |
| latestLine = line |
| break |
| } |
| } |
| c.Assert(latestLine, checker.Not(checker.Equals), "", check.Commentf("no entry for busybox:latest found after pulling all tags")) |
| splitLatest := strings.Fields(latestLine) |
| splitCurrent := strings.Fields(splitOutImageCmd[1]) |
| |
| // Clear relative creation times, since these can easily change between |
| // two invocations of "docker images". Without this, the test can fail |
| // like this: |
| // ... obtained []string = []string{"busybox", "latest", "d9551b4026f0", "27", "minutes", "ago", "1.113", "MB"} |
| // ... expected []string = []string{"busybox", "latest", "d9551b4026f0", "26", "minutes", "ago", "1.113", "MB"} |
| splitLatest[3] = "" |
| splitLatest[4] = "" |
| splitLatest[5] = "" |
| splitCurrent[3] = "" |
| splitCurrent[4] = "" |
| splitCurrent[5] = "" |
| |
| c.Assert(splitLatest, checker.DeepEquals, splitCurrent, check.Commentf("busybox:latest was changed after pulling all tags")) |
| } |
| |
| // TestPullClientDisconnect kills the client during a pull operation and verifies that the operation |
| // gets cancelled. |
| // |
| // Ref: docker/docker#15589 |
| func (s *DockerHubPullSuite) TestPullClientDisconnect(c *check.C) { |
| testRequires(c, DaemonIsLinux) |
| repoName := "hello-world:latest" |
| |
| pullCmd := s.MakeCmd("pull", repoName) |
| stdout, err := pullCmd.StdoutPipe() |
| c.Assert(err, checker.IsNil) |
| err = pullCmd.Start() |
| c.Assert(err, checker.IsNil) |
| |
| // Cancel as soon as we get some output. |
| buf := make([]byte, 10) |
| _, err = stdout.Read(buf) |
| c.Assert(err, checker.IsNil) |
| |
| err = pullCmd.Process.Kill() |
| c.Assert(err, checker.IsNil) |
| |
| time.Sleep(2 * time.Second) |
| _, err = s.CmdWithError("inspect", repoName) |
| c.Assert(err, checker.NotNil, check.Commentf("image was pulled after client disconnected")) |
| } |