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moby--moby/integration-cli/docker_cli_pull_local_test.go
Eng Zer Jun 36049a04d2
test: use T.Setenv to set env vars in tests
This commit replaces `os.Setenv` with `t.Setenv` in tests. The
environment variable is automatically restored to its original value
when the test and all its subtests complete.

Reference: https://pkg.go.dev/testing#T.Setenv
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2022-04-23 17:44:16 +08:00

462 lines
14 KiB
Go

package main
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"runtime"
"strings"
"testing"
"github.com/docker/distribution"
"github.com/docker/distribution/manifest"
"github.com/docker/distribution/manifest/manifestlist"
"github.com/docker/distribution/manifest/schema2"
"github.com/docker/docker/integration-cli/cli/build"
"github.com/opencontainers/go-digest"
"gotest.tools/v3/assert"
"gotest.tools/v3/icmd"
)
// testPullImageWithAliases pulls a specific image tag and verifies that any aliases (i.e., other
// tags for the same image) are not also pulled down.
//
// Ref: docker/docker#8141
func testPullImageWithAliases(c *testing.T) {
repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
var repos []string
for _, tag := range []string{"recent", "fresh"} {
repos = append(repos, fmt.Sprintf("%v:%v", repoName, tag))
}
// Tag and push the same image multiple times.
for _, repo := range repos {
dockerCmd(c, "tag", "busybox", repo)
dockerCmd(c, "push", repo)
}
// Clear local images store.
args := append([]string{"rmi"}, repos...)
dockerCmd(c, args...)
// Pull a single tag and verify it doesn't bring down all aliases.
dockerCmd(c, "pull", repos[0])
dockerCmd(c, "inspect", repos[0])
for _, repo := range repos[1:] {
_, _, err := dockerCmdWithError("inspect", repo)
assert.ErrorContains(c, err, "", "Image %v shouldn't have been pulled down", repo)
}
}
func (s *DockerRegistrySuite) TestPullImageWithAliases(c *testing.T) {
testPullImageWithAliases(c)
}
func (s *DockerSchema1RegistrySuite) TestPullImageWithAliases(c *testing.T) {
testPullImageWithAliases(c)
}
// testConcurrentPullWholeRepo pulls the same repo concurrently.
func testConcurrentPullWholeRepo(c *testing.T) {
repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
var repos []string
for _, tag := range []string{"recent", "fresh", "todays"} {
repo := fmt.Sprintf("%v:%v", repoName, tag)
buildImageSuccessfully(c, repo, build.WithDockerfile(fmt.Sprintf(`
FROM busybox
ENTRYPOINT ["/bin/echo"]
ENV FOO foo
ENV BAR bar
CMD echo %s
`, repo)))
dockerCmd(c, "push", repo)
repos = append(repos, repo)
}
// Clear local images store.
args := append([]string{"rmi"}, repos...)
dockerCmd(c, args...)
// Run multiple re-pulls concurrently
numPulls := 3
results := make(chan error, numPulls)
for i := 0; i != numPulls; i++ {
go func() {
result := icmd.RunCommand(dockerBinary, "pull", "-a", repoName)
results <- result.Error
}()
}
// These checks are separate from the loop above because the check
// package is not goroutine-safe.
for i := 0; i != numPulls; i++ {
err := <-results
assert.NilError(c, err, "concurrent pull failed with error: %v", err)
}
// Ensure all tags were pulled successfully
for _, repo := range repos {
dockerCmd(c, "inspect", repo)
out, _ := dockerCmd(c, "run", "--rm", repo)
assert.Equal(c, strings.TrimSpace(out), "/bin/sh -c echo "+repo)
}
}
func (s *DockerRegistrySuite) TestConcurrentPullWholeRepo(c *testing.T) {
testConcurrentPullWholeRepo(c)
}
func (s *DockerSchema1RegistrySuite) TestConcurrentPullWholeRepo(c *testing.T) {
testConcurrentPullWholeRepo(c)
}
// testConcurrentFailingPull tries a concurrent pull that doesn't succeed.
func testConcurrentFailingPull(c *testing.T) {
repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
// Run multiple pulls concurrently
numPulls := 3
results := make(chan error, numPulls)
for i := 0; i != numPulls; i++ {
go func() {
result := icmd.RunCommand(dockerBinary, "pull", repoName+":asdfasdf")
results <- result.Error
}()
}
// These checks are separate from the loop above because the check
// package is not goroutine-safe.
for i := 0; i != numPulls; i++ {
err := <-results
assert.ErrorContains(c, err, "", "expected pull to fail")
}
}
func (s *DockerRegistrySuite) TestConcurrentFailingPull(c *testing.T) {
testConcurrentFailingPull(c)
}
func (s *DockerSchema1RegistrySuite) TestConcurrentFailingPull(c *testing.T) {
testConcurrentFailingPull(c)
}
// testConcurrentPullMultipleTags pulls multiple tags from the same repo
// concurrently.
func testConcurrentPullMultipleTags(c *testing.T) {
repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
var repos []string
for _, tag := range []string{"recent", "fresh", "todays"} {
repo := fmt.Sprintf("%v:%v", repoName, tag)
buildImageSuccessfully(c, repo, build.WithDockerfile(fmt.Sprintf(`
FROM busybox
ENTRYPOINT ["/bin/echo"]
ENV FOO foo
ENV BAR bar
CMD echo %s
`, repo)))
dockerCmd(c, "push", repo)
repos = append(repos, repo)
}
// Clear local images store.
args := append([]string{"rmi"}, repos...)
dockerCmd(c, args...)
// Re-pull individual tags, in parallel
results := make(chan error, len(repos))
for _, repo := range repos {
go func(repo string) {
result := icmd.RunCommand(dockerBinary, "pull", repo)
results <- result.Error
}(repo)
}
// These checks are separate from the loop above because the check
// package is not goroutine-safe.
for range repos {
err := <-results
assert.NilError(c, err, "concurrent pull failed with error: %v", err)
}
// Ensure all tags were pulled successfully
for _, repo := range repos {
dockerCmd(c, "inspect", repo)
out, _ := dockerCmd(c, "run", "--rm", repo)
assert.Equal(c, strings.TrimSpace(out), "/bin/sh -c echo "+repo)
}
}
func (s *DockerRegistrySuite) TestConcurrentPullMultipleTags(c *testing.T) {
testConcurrentPullMultipleTags(c)
}
func (s *DockerSchema1RegistrySuite) TestConcurrentPullMultipleTags(c *testing.T) {
testConcurrentPullMultipleTags(c)
}
// testPullIDStability verifies that pushing an image and pulling it back
// preserves the image ID.
func testPullIDStability(c *testing.T) {
derivedImage := privateRegistryURL + "/dockercli/id-stability"
baseImage := "busybox"
buildImageSuccessfully(c, derivedImage, build.WithDockerfile(fmt.Sprintf(`
FROM %s
ENV derived true
ENV asdf true
RUN dd if=/dev/zero of=/file bs=1024 count=1024
CMD echo %s
`, baseImage, derivedImage)))
originalID := getIDByName(c, derivedImage)
dockerCmd(c, "push", derivedImage)
// Pull
out, _ := dockerCmd(c, "pull", derivedImage)
if strings.Contains(out, "Pull complete") {
c.Fatalf("repull redownloaded a layer: %s", out)
}
derivedIDAfterPull := getIDByName(c, derivedImage)
if derivedIDAfterPull != originalID {
c.Fatal("image's ID unexpectedly changed after a repush/repull")
}
// Make sure the image runs correctly
out, _ = dockerCmd(c, "run", "--rm", derivedImage)
if strings.TrimSpace(out) != derivedImage {
c.Fatalf("expected %s; got %s", derivedImage, out)
}
// Confirm that repushing and repulling does not change the computed ID
dockerCmd(c, "push", derivedImage)
dockerCmd(c, "rmi", derivedImage)
dockerCmd(c, "pull", derivedImage)
derivedIDAfterPull = getIDByName(c, derivedImage)
if derivedIDAfterPull != originalID {
c.Fatal("image's ID unexpectedly changed after a repush/repull")
}
// Make sure the image still runs
out, _ = dockerCmd(c, "run", "--rm", derivedImage)
if strings.TrimSpace(out) != derivedImage {
c.Fatalf("expected %s; got %s", derivedImage, out)
}
}
func (s *DockerRegistrySuite) TestPullIDStability(c *testing.T) {
testPullIDStability(c)
}
func (s *DockerSchema1RegistrySuite) TestPullIDStability(c *testing.T) {
testPullIDStability(c)
}
// #21213
func testPullNoLayers(c *testing.T) {
repoName := fmt.Sprintf("%v/dockercli/scratch", privateRegistryURL)
buildImageSuccessfully(c, repoName, build.WithDockerfile(`
FROM scratch
ENV foo bar`))
dockerCmd(c, "push", repoName)
dockerCmd(c, "rmi", repoName)
dockerCmd(c, "pull", repoName)
}
func (s *DockerRegistrySuite) TestPullNoLayers(c *testing.T) {
testPullNoLayers(c)
}
func (s *DockerSchema1RegistrySuite) TestPullNoLayers(c *testing.T) {
testPullNoLayers(c)
}
func (s *DockerRegistrySuite) TestPullManifestList(c *testing.T) {
testRequires(c, NotArm)
pushDigest, err := setupImage(c)
assert.NilError(c, err, "error setting up image")
// Inject a manifest list into the registry
manifestList := &manifestlist.ManifestList{
Versioned: manifest.Versioned{
SchemaVersion: 2,
MediaType: manifestlist.MediaTypeManifestList,
},
Manifests: []manifestlist.ManifestDescriptor{
{
Descriptor: distribution.Descriptor{
Digest: "sha256:1a9ec845ee94c202b2d5da74a24f0ed2058318bfa9879fa541efaecba272e86b",
Size: 3253,
MediaType: schema2.MediaTypeManifest,
},
Platform: manifestlist.PlatformSpec{
Architecture: "bogus_arch",
OS: "bogus_os",
},
},
{
Descriptor: distribution.Descriptor{
Digest: pushDigest,
Size: 3253,
MediaType: schema2.MediaTypeManifest,
},
Platform: manifestlist.PlatformSpec{
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
},
},
},
}
manifestListJSON, err := json.MarshalIndent(manifestList, "", " ")
assert.NilError(c, err, "error marshalling manifest list")
manifestListDigest := digest.FromBytes(manifestListJSON)
hexDigest := manifestListDigest.Hex()
registryV2Path := s.reg.Path()
// Write manifest list to blob store
blobDir := filepath.Join(registryV2Path, "blobs", "sha256", hexDigest[:2], hexDigest)
err = os.MkdirAll(blobDir, 0755)
assert.NilError(c, err, "error creating blob dir")
blobPath := filepath.Join(blobDir, "data")
err = os.WriteFile(blobPath, manifestListJSON, 0644)
assert.NilError(c, err, "error writing manifest list")
// Add to revision store
revisionDir := filepath.Join(registryV2Path, "repositories", remoteRepoName, "_manifests", "revisions", "sha256", hexDigest)
err = os.Mkdir(revisionDir, 0755)
assert.Assert(c, err == nil, "error creating revision dir")
revisionPath := filepath.Join(revisionDir, "link")
err = os.WriteFile(revisionPath, []byte(manifestListDigest.String()), 0644)
assert.Assert(c, err == nil, "error writing revision link")
// Update tag
tagPath := filepath.Join(registryV2Path, "repositories", remoteRepoName, "_manifests", "tags", "latest", "current", "link")
err = os.WriteFile(tagPath, []byte(manifestListDigest.String()), 0644)
assert.NilError(c, err, "error writing tag link")
// Verify that the image can be pulled through the manifest list.
out, _ := dockerCmd(c, "pull", repoName)
// The pull output includes "Digest: <digest>", so find that
matches := digestRegex.FindStringSubmatch(out)
assert.Equal(c, len(matches), 2, fmt.Sprintf("unable to parse digest from pull output: %s", out))
pullDigest := matches[1]
// Make sure the pushed and pull digests match
assert.Equal(c, manifestListDigest.String(), pullDigest)
// Was the image actually created?
dockerCmd(c, "inspect", repoName)
dockerCmd(c, "rmi", repoName)
}
// #23100
func (s *DockerRegistryAuthHtpasswdSuite) TestPullWithExternalAuthLoginWithScheme(c *testing.T) {
workingDir, err := os.Getwd()
assert.NilError(c, err)
absolute, err := filepath.Abs(filepath.Join(workingDir, "fixtures", "auth"))
assert.NilError(c, err)
osPath := os.Getenv("PATH")
testPath := fmt.Sprintf("%s%c%s", osPath, filepath.ListSeparator, absolute)
c.Setenv("PATH", testPath)
repoName := fmt.Sprintf("%v/dockercli/busybox:authtest", privateRegistryURL)
tmp, err := os.MkdirTemp("", "integration-cli-")
assert.NilError(c, err)
externalAuthConfig := `{ "credsStore": "shell-test" }`
configPath := filepath.Join(tmp, "config.json")
err = os.WriteFile(configPath, []byte(externalAuthConfig), 0644)
assert.NilError(c, err)
dockerCmd(c, "--config", tmp, "login", "-u", s.reg.Username(), "-p", s.reg.Password(), privateRegistryURL)
b, err := os.ReadFile(configPath)
assert.NilError(c, err)
assert.Assert(c, !strings.Contains(string(b), "\"auth\":"))
dockerCmd(c, "--config", tmp, "tag", "busybox", repoName)
dockerCmd(c, "--config", tmp, "push", repoName)
dockerCmd(c, "--config", tmp, "logout", privateRegistryURL)
dockerCmd(c, "--config", tmp, "login", "-u", s.reg.Username(), "-p", s.reg.Password(), "https://"+privateRegistryURL)
dockerCmd(c, "--config", tmp, "pull", repoName)
// likewise push should work
repoName2 := fmt.Sprintf("%v/dockercli/busybox:nocreds", privateRegistryURL)
dockerCmd(c, "tag", repoName, repoName2)
dockerCmd(c, "--config", tmp, "push", repoName2)
// logout should work w scheme also because it will be stripped
dockerCmd(c, "--config", tmp, "logout", "https://"+privateRegistryURL)
}
func (s *DockerRegistryAuthHtpasswdSuite) TestPullWithExternalAuth(c *testing.T) {
workingDir, err := os.Getwd()
assert.NilError(c, err)
absolute, err := filepath.Abs(filepath.Join(workingDir, "fixtures", "auth"))
assert.NilError(c, err)
osPath := os.Getenv("PATH")
testPath := fmt.Sprintf("%s%c%s", osPath, filepath.ListSeparator, absolute)
c.Setenv("PATH", testPath)
repoName := fmt.Sprintf("%v/dockercli/busybox:authtest", privateRegistryURL)
tmp, err := os.MkdirTemp("", "integration-cli-")
assert.NilError(c, err)
externalAuthConfig := `{ "credsStore": "shell-test" }`
configPath := filepath.Join(tmp, "config.json")
err = os.WriteFile(configPath, []byte(externalAuthConfig), 0644)
assert.NilError(c, err)
dockerCmd(c, "--config", tmp, "login", "-u", s.reg.Username(), "-p", s.reg.Password(), privateRegistryURL)
b, err := os.ReadFile(configPath)
assert.NilError(c, err)
assert.Assert(c, !strings.Contains(string(b), "\"auth\":"))
dockerCmd(c, "--config", tmp, "tag", "busybox", repoName)
dockerCmd(c, "--config", tmp, "push", repoName)
dockerCmd(c, "--config", tmp, "pull", repoName)
}
// TestRunImplicitPullWithNoTag should pull implicitly only the default tag (latest)
func (s *DockerRegistrySuite) TestRunImplicitPullWithNoTag(c *testing.T) {
testRequires(c, DaemonIsLinux)
repo := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
repoTag1 := fmt.Sprintf("%v:latest", repo)
repoTag2 := fmt.Sprintf("%v:t1", repo)
// tag the image and upload it to the private registry
dockerCmd(c, "tag", "busybox", repoTag1)
dockerCmd(c, "tag", "busybox", repoTag2)
dockerCmd(c, "push", repo)
dockerCmd(c, "rmi", repoTag1)
dockerCmd(c, "rmi", repoTag2)
out, _ := dockerCmd(c, "run", repo)
assert.Assert(c, strings.Contains(out, fmt.Sprintf("Unable to find image '%s:latest' locally", repo)))
// There should be only one line for repo, the one with repo:latest
outImageCmd, _ := dockerCmd(c, "images", repo)
splitOutImageCmd := strings.Split(strings.TrimSpace(outImageCmd), "\n")
assert.Equal(c, len(splitOutImageCmd), 2)
}