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manifest-push: add support for --force-compression

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Adds support for --force-compression which allows end-users to force
push blobs with the selected compresison in --compression option, in
order to make sure that blobs of other compression on registry are not
reused.

Signed-off-by: Aditya R <arajan@redhat.com>
This commit is contained in:
Aditya R
2023-08-16 12:49:11 +05:30
parent 469ace0910
commit 82bd56be74
8 changed files with 78 additions and 21 deletions
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45
test/e2e/manifest_test.go
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@@ -154,7 +154,7 @@ var _ = Describe("Podman manifest", func() {
Expect(session2.OutputToString()).To(Equal(session.OutputToString()))
})
It("push with --add-compression", func() {
It("push with --add-compression and --force-compression", func() {
if podmanTest.Host.Arch == "ppc64le" {
Skip("No registry image for ppc64le")
}
@@ -209,6 +209,49 @@ var _ = Describe("Podman manifest", func() {
Expect(verifyInstanceCompression(index.Manifests, "zstd", "arm64")).Should(BeTrue())
Expect(verifyInstanceCompression(index.Manifests, "gzip", "arm64")).Should(BeTrue())
Expect(verifyInstanceCompression(index.Manifests, "gzip", "amd64")).Should(BeTrue())
// Note: Pushing again with --force-compression should produce the correct response the since blobs will be correctly force-pushed again.
push = podmanTest.Podman([]string{"manifest", "push", "--all", "--add-compression", "zstd", "--tls-verify=false", "--compression-format", "gzip", "--force-compression", "--remove-signatures", "foobar", "localhost:5000/list"})
push.WaitWithDefaultTimeout()
Expect(push).Should(Exit(0))
output = push.ErrorToString()
// 4 images must be pushed two for gzip and two for zstd
Expect(output).To(ContainSubstring("Copying 4 images generated from 2 images in list"))
session = podmanTest.Podman([]string{"run", "--rm", "--net", "host", "quay.io/skopeo/stable", "inspect", "--tls-verify=false", "--raw", "docker://localhost:5000/list:latest"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
inspectData = []byte(session.OutputToString())
err = json.Unmarshal(inspectData, &index)
Expect(err).ToNot(HaveOccurred())
Expect(verifyInstanceCompression(index.Manifests, "zstd", "amd64")).Should(BeTrue())
Expect(verifyInstanceCompression(index.Manifests, "zstd", "arm64")).Should(BeTrue())
Expect(verifyInstanceCompression(index.Manifests, "gzip", "arm64")).Should(BeTrue())
Expect(verifyInstanceCompression(index.Manifests, "gzip", "amd64")).Should(BeTrue())
// Note: Pushing again without --force-compression should produce in-correct/wrong result since blobs are already present in registry so they will be reused
// ignoring our compression priority ( this is expected behaviour of c/image and --force-compression is introduced to mitigate this behaviour ).
push = podmanTest.Podman([]string{"manifest", "push", "--all", "--add-compression", "zstd", "--tls-verify=false", "--remove-signatures", "foobar", "localhost:5000/list"})
push.WaitWithDefaultTimeout()
Expect(push).Should(Exit(0))
output = push.ErrorToString()
// 4 images must be pushed two for gzip and two for zstd
Expect(output).To(ContainSubstring("Copying 4 images generated from 2 images in list"))
session = podmanTest.Podman([]string{"run", "--rm", "--net", "host", "quay.io/skopeo/stable", "inspect", "--tls-verify=false", "--raw", "docker://localhost:5000/list:latest"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
inspectData = []byte(session.OutputToString())
err = json.Unmarshal(inspectData, &index)
Expect(err).ToNot(HaveOccurred())
Expect(verifyInstanceCompression(index.Manifests, "zstd", "amd64")).Should(BeTrue())
Expect(verifyInstanceCompression(index.Manifests, "zstd", "arm64")).Should(BeTrue())
// blobs of zstd will be wrongly reused for gzip instances without --force-compression
Expect(verifyInstanceCompression(index.Manifests, "gzip", "arm64")).Should(BeFalse())
// blobs of zstd will be wrongly reused for gzip instances without --force-compression
Expect(verifyInstanceCompression(index.Manifests, "gzip", "amd64")).Should(BeFalse())
})
It("add --all", func() {