cca0132fcf
Expose registry error translation for plugin distribution
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
(cherry picked from commit a12b466183)
Signed-off-by: Victor Vieux <vieux@docker.com>
274 lines
10 KiB
Go
274 lines
10 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
"strings"
|
|
"sync"
|
|
"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)
|
|
|
|
type entry struct {
|
|
repo string
|
|
alias string
|
|
tag string
|
|
}
|
|
|
|
entries := []entry{
|
|
{"asdfasdf", "asdfasdf", "foobar"},
|
|
{"asdfasdf", "library/asdfasdf", "foobar"},
|
|
{"asdfasdf", "asdfasdf", ""},
|
|
{"asdfasdf", "asdfasdf", "latest"},
|
|
{"asdfasdf", "library/asdfasdf", ""},
|
|
{"asdfasdf", "library/asdfasdf", "latest"},
|
|
}
|
|
|
|
// The option field indicates "-a" or not.
|
|
type record struct {
|
|
e entry
|
|
option string
|
|
out string
|
|
err error
|
|
}
|
|
|
|
// Execute 'docker pull' in parallel, pass results (out, err) and
|
|
// necessary information ("-a" or not, and the image name) to channel.
|
|
var group sync.WaitGroup
|
|
recordChan := make(chan record, len(entries)*2)
|
|
for _, e := range entries {
|
|
group.Add(1)
|
|
go func(e entry) {
|
|
defer group.Done()
|
|
repoName := e.alias
|
|
if e.tag != "" {
|
|
repoName += ":" + e.tag
|
|
}
|
|
out, err := s.CmdWithError("pull", repoName)
|
|
recordChan <- record{e, "", out, err}
|
|
}(e)
|
|
if e.tag == "" {
|
|
// pull -a on a nonexistent registry should fall back as well
|
|
group.Add(1)
|
|
go func(e entry) {
|
|
defer group.Done()
|
|
out, err := s.CmdWithError("pull", "-a", e.alias)
|
|
recordChan <- record{e, "-a", out, err}
|
|
}(e)
|
|
}
|
|
}
|
|
|
|
// Wait for completion
|
|
group.Wait()
|
|
close(recordChan)
|
|
|
|
// Process the results (out, err).
|
|
for record := range recordChan {
|
|
if len(record.option) == 0 {
|
|
c.Assert(record.err, checker.NotNil, check.Commentf("expected non-zero exit status when pulling non-existing image: %s", record.out))
|
|
c.Assert(record.out, checker.Contains, fmt.Sprintf("repository %s not found: does not exist or no pull access", record.e.repo), check.Commentf("expected image not found error messages"))
|
|
} else {
|
|
// pull -a on a nonexistent registry should fall back as well
|
|
c.Assert(record.err, checker.NotNil, check.Commentf("expected non-zero exit status when pulling non-existing image: %s", record.out))
|
|
c.Assert(record.out, checker.Contains, fmt.Sprintf("repository %s not found", record.e.repo), check.Commentf("expected image not found error messages"))
|
|
c.Assert(record.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)
|
|
|
|
// Pull hello-world from v2
|
|
pullFromV2 := func(ref string) (int, string) {
|
|
out := s.Cmd(c, "pull", "hello-world")
|
|
v1Retries := 0
|
|
for strings.Contains(out, "this image was pulled from a legacy registry") {
|
|
// Some network errors may cause fallbacks to the v1
|
|
// protocol, which would violate the test's assumption
|
|
// that it will get the same images. To make the test
|
|
// more robust against these network glitches, allow a
|
|
// few retries if we end up with a v1 pull.
|
|
|
|
if v1Retries > 2 {
|
|
c.Fatalf("too many v1 fallback incidents when pulling %s", ref)
|
|
}
|
|
|
|
s.Cmd(c, "rmi", ref)
|
|
out = s.Cmd(c, "pull", ref)
|
|
|
|
v1Retries++
|
|
}
|
|
|
|
return v1Retries, out
|
|
}
|
|
|
|
pullFromV2("hello-world")
|
|
defer deleteImages("hello-world")
|
|
|
|
s.Cmd(c, "tag", "hello-world", "hello-world-backup")
|
|
|
|
for _, ref := 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",
|
|
} {
|
|
var out string
|
|
for {
|
|
var v1Retries int
|
|
v1Retries, out = pullFromV2(ref)
|
|
|
|
// Keep repeating the test case until we don't hit a v1
|
|
// fallback case. We won't get the right "Image is up
|
|
// to date" message if the local image was replaced
|
|
// with one pulled from v1.
|
|
if v1Retries == 0 {
|
|
break
|
|
}
|
|
s.Cmd(c, "rmi", ref)
|
|
s.Cmd(c, "tag", "hello-world-backup", "hello-world")
|
|
}
|
|
c.Assert(out, checker.Contains, "Image is up to date for hello-world:latest")
|
|
}
|
|
|
|
s.Cmd(c, "rmi", "hello-world-backup")
|
|
|
|
// 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"))
|
|
}
|
|
|
|
func (s *DockerRegistryAuthHtpasswdSuite) TestPullNoCredentialsNotFound(c *check.C) {
|
|
// we don't care about the actual image, we just want to see image not found
|
|
// because that means v2 call returned 401 and we fell back to v1 which usually
|
|
// gives a 404 (in this case the test registry doesn't handle v1 at all)
|
|
out, _, err := dockerCmdWithError("pull", privateRegistryURL+"/busybox")
|
|
c.Assert(err, check.NotNil, check.Commentf(out))
|
|
c.Assert(out, checker.Contains, "Error: image busybox:latest not found")
|
|
}
|
|
|
|
// Regression test for https://github.com/docker/docker/issues/26429
|
|
func (s *DockerSuite) TestPullLinuxImageFailsOnWindows(c *check.C) {
|
|
testRequires(c, DaemonIsWindows, Network)
|
|
_, _, err := dockerCmdWithError("pull", "ubuntu")
|
|
c.Assert(err.Error(), checker.Contains, "cannot be used on this platform")
|
|
}
|