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f418688f2c
Build the image for TestIssue13030 locally using pkg/archive, instead of pulling the prebuilt ghcr.io/containerd/whiteout-test image. The image is built by appending layers generated with archive.WriteDiff on top of the busybox base image, served with the new testutil.ServeImage helper on a localhost HTTP registry, and pulled through the regular client.Pull path with WithPullUnpack. This removes the need to publish the multi-arch whiteout-test image, so the Dockerfile and Makefile added in PR 13704 are removed along with the image list entry. Assisted-by: Claude Fable 5 <noreply@anthropic.com> Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
93 lines
2.9 KiB
Go
93 lines
2.9 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package testutil
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import (
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"net/http"
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"net/http/httptest"
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"strconv"
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"strings"
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"testing"
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"github.com/opencontainers/go-digest"
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ocispec "github.com/opencontainers/image-spec/specs-go/v1"
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)
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// ServeImage serves an image from a read-only HTTP registry listening on
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// localhost, and returns a reference to pull the image from.
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//
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// blobs must be keyed by digest and contain the manifest blob referenced by
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// target, along with the blobs it references, except for those already
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// present in the puller's content store. The registry is shut down when the
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// test completes.
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func ServeImage(t *testing.T, name, tag string, target ocispec.Descriptor, blobs map[digest.Digest][]byte) string {
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manifestPath := "/v2/" + name + "/manifests/"
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blobPath := "/v2/" + name + "/blobs/"
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srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet && r.Method != http.MethodHead {
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w.WriteHeader(http.StatusMethodNotAllowed)
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return
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}
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var b []byte
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mediaType := "application/octet-stream"
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switch {
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case strings.HasPrefix(r.URL.Path, manifestPath):
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// A manifest may be requested by the tag, by the target
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// digest, or, for a multi-platform image, by the digest of
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// a platform manifest.
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dgst := target.Digest
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if ref := strings.TrimPrefix(r.URL.Path, manifestPath); ref != tag {
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var err error
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if dgst, err = digest.Parse(ref); err != nil {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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}
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var ok bool
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if b, ok = blobs[dgst]; !ok {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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if dgst == target.Digest {
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mediaType = target.MediaType
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}
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w.Header().Set("Docker-Content-Digest", dgst.String())
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case strings.HasPrefix(r.URL.Path, blobPath):
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dgst, err := digest.Parse(strings.TrimPrefix(r.URL.Path, blobPath))
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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var ok bool
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if b, ok = blobs[dgst]; !ok {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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default:
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w.WriteHeader(http.StatusNotFound)
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return
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}
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w.Header().Set("Content-Type", mediaType)
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w.Header().Set("Content-Length", strconv.Itoa(len(b)))
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if r.Method == http.MethodGet {
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w.Write(b)
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}
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}))
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t.Cleanup(srv.Close)
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return strings.TrimPrefix(srv.URL, "http://") + "/" + name + ":" + tag
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}
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