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rebaser_test.go
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rebaser_test.go
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package lifecycle_test
import (
"encoding/json"
"testing"
"github.com/apex/log"
"github.com/apex/log/handlers/memory"
"github.com/buildpacks/imgutil/fakes"
"github.com/buildpacks/imgutil/local"
"github.com/buildpacks/imgutil/remote"
"github.com/google/go-containerregistry/pkg/name"
"github.com/sclevine/spec"
"github.com/sclevine/spec/report"
"github.com/buildpacks/lifecycle"
"github.com/buildpacks/lifecycle/api"
"github.com/buildpacks/lifecycle/image"
"github.com/buildpacks/lifecycle/platform"
"github.com/buildpacks/lifecycle/platform/files"
h "github.com/buildpacks/lifecycle/testhelpers"
)
func TestRebaser(t *testing.T) {
spec.Run(t, "Rebaser", testRebaser, spec.Parallel(), spec.Report(report.Terminal{}))
}
func testRebaser(t *testing.T, when spec.G, it spec.S) {
var (
rebaser *lifecycle.Rebaser
fakeAppImage *fakes.Image
fakeNewBaseImage *fakes.Image
fakePreviousImage *fakes.Image
additionalNames []string
md files.LayersMetadataCompat
logHandler *memory.Handler
)
it.Before(func() {
fakeAppImage = fakes.NewImage(
"some-repo/app-image",
"some-top-layer-sha",
local.IDIdentifier{
ImageID: "some-image-id",
},
)
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
fakeNewBaseImage = fakes.NewImage(
"some-repo/new-base-image",
"new-top-layer-sha",
local.IDIdentifier{
ImageID: "new-run-id",
},
)
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
fakePreviousImage = fakes.NewImage(
"some-repo/previous-image",
"previous-layer-sha",
local.IDIdentifier{
ImageID: "previous-run-id",
},
)
h.AssertNil(t, fakePreviousImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
lifecycleMD := files.LayersMetadata{
Stack: &files.Stack{RunImage: files.RunImageForExport{
Image: fakeNewBaseImage.Name(),
}},
}
label, err := json.Marshal(lifecycleMD)
h.AssertNil(t, err)
h.AssertNil(t, fakeAppImage.SetLabel(platform.LifecycleMetadataLabel, string(label)))
h.AssertNil(t, fakeAppImage.SetEnv(platform.EnvPlatformAPI, api.Platform.Latest().String()))
additionalNames = []string{"some-repo/app-image:foo", "some-repo/app-image:bar"}
logHandler = memory.New()
rebaser = &lifecycle.Rebaser{
Logger: &log.Logger{Handler: logHandler},
PlatformAPI: api.Platform.Latest(),
}
})
it.After(func() {
h.AssertNil(t, fakeAppImage.Cleanup())
h.AssertNil(t, fakeNewBaseImage.Cleanup())
})
when("#Rebase", func() {
when("app image and run image exist", func() {
it("updates the base image of the app image", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
it("saves to all names", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.SavedNames(), "some-repo/app-image", "some-repo/app-image:foo", "some-repo/app-image:bar")
})
it("adds all names to report", func() {
report, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertContains(t, report.Image.Tags, "some-repo/app-image", "some-repo/app-image:foo", "some-repo/app-image:bar")
})
it("sets the top layer in the metadata", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, md.RunImage.TopLayer, "new-top-layer-sha")
})
it("sets the run image reference in the metadata", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, md.RunImage.Reference, "new-run-id")
})
it("preserves other existing metadata", func() {
h.AssertNil(t, fakeAppImage.SetLabel(
platform.LifecycleMetadataLabel,
`{"app": [{"sha": "123456"}], "buildpacks":[{"key": "buildpack.id", "layers": {}}]}`,
))
rebaser.Force = true // skip run image validations
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, len(md.Buildpacks), 1)
h.AssertEq(t, md.Buildpacks[0].ID, "buildpack.id")
h.AssertEq(t, md.App, []interface{}{map[string]interface{}{"sha": "123456"}})
})
when("updating run image metadata", func() {
it.Before(func() {
lifecycleMD := files.LayersMetadata{
RunImage: files.RunImageForRebase{
TopLayer: "some-top-layer",
Reference: "some-run-image-digest-reference",
RunImageForExport: files.RunImageForExport{
Image: "some-run-image-tag-reference",
Mirrors: []string{"some-run-image-mirror"},
},
},
Stack: &files.Stack{RunImage: files.RunImageForExport{
Image: "some-run-image-tag-reference",
Mirrors: []string{"some-run-image-mirror"},
}},
}
label, err := json.Marshal(lifecycleMD)
h.AssertNil(t, err)
h.AssertNil(t, fakeAppImage.SetLabel(platform.LifecycleMetadataLabel, string(label)))
})
when("existing run image metadata", func() {
when("does not include new run image", func() {
when("force", func() {
when("true", func() {
it.Before(func() {
rebaser.Force = true
})
it("warns and overrides the existing metadata", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
assertLogEntry(t, logHandler, `new base image 'some-repo/new-base-image' not found in existing run image metadata: {"topLayer":"new-top-layer-sha","reference":"new-run-id","image":"some-run-image-tag-reference","mirrors":["some-run-image-mirror"]}`)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
var empty []string
h.AssertEq(t, md.RunImage.TopLayer, "new-top-layer-sha")
h.AssertEq(t, md.RunImage.Reference, "new-run-id")
h.AssertEq(t, md.RunImage.Image, "some-repo/new-base-image")
h.AssertEq(t, md.RunImage.Mirrors, empty)
h.AssertEq(t, md.Stack.RunImage.Image, "some-repo/new-base-image")
h.AssertEq(t, md.Stack.RunImage.Mirrors, empty)
})
})
when("false", func() {
it.Before(func() {
rebaser.Force = false
})
it("errors", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `rebase app image: new base image 'some-repo/new-base-image' not found in existing run image metadata: {"topLayer":"new-top-layer-sha","reference":"new-run-id","image":"some-run-image-tag-reference","mirrors":["some-run-image-mirror"]}`)
})
when("tag is different", func() {
it.Before(func() {
fakeNewBaseImage = fakes.NewImage(
"some-run-image-mirror:new-tag",
"new-top-layer-sha",
local.IDIdentifier{
ImageID: "new-run-id",
},
)
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
})
it("doesn't match", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `rebase app image: new base image 'some-run-image-mirror:new-tag' not found in existing run image metadata: {"topLayer":"new-top-layer-sha","reference":"new-run-id","image":"some-run-image-tag-reference","mirrors":["some-run-image-mirror"]}`)
})
})
when("platform API < 0.12", func() {
it.Before(func() {
rebaser.PlatformAPI = api.MustParse("0.11")
})
it("preserves the existing metadata", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, md.RunImage.TopLayer, "new-top-layer-sha")
h.AssertEq(t, md.RunImage.Reference, "new-run-id")
h.AssertEq(t, md.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.RunImage.Mirrors, []string{"some-run-image-mirror"})
h.AssertEq(t, md.Stack.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.Stack.RunImage.Mirrors, []string{"some-run-image-mirror"})
})
})
})
})
})
when("includes new run image", func() {
it.Before(func() {
fakeNewBaseImage = fakes.NewImage(
"some-run-image-mirror",
"new-top-layer-sha",
local.IDIdentifier{
ImageID: "new-run-id",
},
)
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
})
it("preserves the existing metadata", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, md.RunImage.TopLayer, "new-top-layer-sha")
h.AssertEq(t, md.RunImage.Reference, "new-run-id")
h.AssertEq(t, md.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.RunImage.Mirrors, []string{"some-run-image-mirror"})
h.AssertEq(t, md.Stack.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.Stack.RunImage.Mirrors, []string{"some-run-image-mirror"})
})
when("reference includes docker registry", func() {
it.Before(func() {
fakeNewBaseImage = fakes.NewImage(
"index.docker.io/some-run-image-mirror",
"new-top-layer-sha",
local.IDIdentifier{
ImageID: "new-run-id",
},
)
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
})
it("still matches", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, md.RunImage.TopLayer, "new-top-layer-sha")
h.AssertEq(t, md.RunImage.Reference, "new-run-id")
h.AssertEq(t, md.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.RunImage.Mirrors, []string{"some-run-image-mirror"})
h.AssertEq(t, md.Stack.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.Stack.RunImage.Mirrors, []string{"some-run-image-mirror"})
})
})
})
when("includes new run image as mirror", func() {
it.Before(func() {
fakeNewBaseImage = fakes.NewImage(
"some-run-image-mirror",
"new-top-layer-sha",
local.IDIdentifier{
ImageID: "new-run-id",
},
)
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
})
it("preserves the existing metadata", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertNil(t, image.DecodeLabel(fakeAppImage, platform.LifecycleMetadataLabel, &md))
h.AssertEq(t, md.RunImage.TopLayer, "new-top-layer-sha")
h.AssertEq(t, md.RunImage.Reference, "new-run-id")
h.AssertEq(t, md.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.RunImage.Mirrors, []string{"some-run-image-mirror"})
h.AssertEq(t, md.Stack.RunImage.Image, "some-run-image-tag-reference")
h.AssertEq(t, md.Stack.RunImage.Mirrors, []string{"some-run-image-mirror"})
})
})
})
})
when("image has io.buildpacks.stack.* labels", func() {
var tests = []struct {
label string
appImageValue string
runImageValue string
want string
}{
{"io.buildpacks.stack.distro.name", "ubuntu", "ubuntu", "ubuntu"},
{"io.buildpacks.stack.changed", "v1", "v2", "v2"},
{"io.buildpacks.stack.added", "", "new", "new"},
{"io.buildpacks.stack.removed", "old", "", ""},
{"io.custom.old", "abc", "", "abc"},
{"io.custom.stack", "", "def", ""},
}
it.Before(func() {
for _, l := range tests {
if l.runImageValue != "" {
h.AssertNil(t, fakeNewBaseImage.SetLabel(l.label, l.runImageValue))
}
if l.appImageValue != "" {
h.AssertNil(t, fakeAppImage.SetLabel(l.label, l.appImageValue))
}
}
})
it("syncs matching labels", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
for _, test := range tests {
test := test
t.Run(test.label, func(t *testing.T) {
actual, err := fakeAppImage.Label(test.label)
h.AssertNil(t, err)
h.AssertEq(t, test.want, actual)
})
}
})
})
when("image has io.buildpacks.base.* labels", func() {
var tests = []struct {
label string
appImageValue string
runImageValue string
want string
}{
{"io.buildpacks.base.homepage", "v1", "v2", "v2"},
{"io.buildpacks.stack.added", "", "new", "new"},
{"io.buildpacks.base.removed", "old", "", ""},
}
it.Before(func() {
for _, l := range tests {
if l.runImageValue != "" {
h.AssertNil(t, fakeNewBaseImage.SetLabel(l.label, l.runImageValue))
}
if l.appImageValue != "" {
h.AssertNil(t, fakeAppImage.SetLabel(l.label, l.appImageValue))
}
}
})
it("syncs matching labels", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
for _, test := range tests {
test := test
t.Run(test.label, func(t *testing.T) {
actual, err := fakeAppImage.Label(test.label)
h.AssertNil(t, err)
h.AssertEq(t, test.want, actual)
})
}
})
})
when("report.toml", func() {
when("image has a digest identifier", func() {
var fakeRemoteDigest = "sha256:c27a27006b74a056bed5d9edcebc394783880abe8691a8c87c78b7cffa6fa5ad"
it.Before(func() {
digestRef, err := name.NewDigest("some-repo/app-image@" + fakeRemoteDigest)
h.AssertNil(t, err)
fakeAppImage.SetIdentifier(remote.DigestIdentifier{
Digest: digestRef,
})
})
it("add the digest to the report", func() {
report, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, report.Image.Digest, fakeRemoteDigest)
})
})
when("checking the image manifest", func() {
var fakeRemoteManifestSize int64
when("platform API < 0.6", func() {
it.Before(func() {
rebaser.PlatformAPI = api.MustParse("0.5")
})
when("image has a manifest", func() {
it.Before(func() {
fakeRemoteManifestSize = 12345
fakeAppImage.SetManifestSize(fakeRemoteManifestSize)
})
it("doesn't set the manifest size in the report.toml", func() {
report, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, report.Image.ManifestSize, int64(0))
})
})
})
when("platform API >= 0.6", func() {
when("image has a manifest", func() {
it.Before(func() {
fakeRemoteManifestSize = 12345
fakeAppImage.SetManifestSize(fakeRemoteManifestSize)
})
it("add the manifest size to the report", func() {
report, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, report.Image.ManifestSize, fakeRemoteManifestSize)
})
})
when("image doesn't have a manifest", func() {
it.Before(func() {
fakeRemoteManifestSize = 0
fakeAppImage.SetManifestSize(fakeRemoteManifestSize)
})
it("doesn't set the manifest size in the report.toml", func() {
report, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, report.Image.ManifestSize, int64(0))
})
})
})
})
when("image has an ID identifier", func() {
it("add the imageID to the report", func() {
report, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, report.Image.ImageID, "some-image-id")
})
})
})
})
when("validating rebasable", func() {
when("rebasable label is false", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.RebasableLabel, "false"))
})
when("force", func() {
when("false", func() {
it.Before(func() {
rebaser.Force = false
})
it("errors", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "app image is not marked as rebasable")
})
})
when("true", func() {
it.Before(func() {
rebaser.Force = true
})
it("warns and allows rebase", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
assertLogEntry(t, logHandler, "app image is not marked as rebasable")
})
})
})
})
when("rebasable label is not false", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.RebasableLabel, "true"))
})
it("allows rebase", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
})
})
when("rebasable label is empty", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.RebasableLabel, ""))
})
it("allows rebase", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
})
})
when("previous image was built using platform API < 0.12", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetEnv(platform.EnvPlatformAPI, "0.11"))
})
when("rebasable label is false", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.RebasableLabel, "false"))
})
it("allows rebase", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
})
})
})
})
when("validating mixins", func() {
when("mixins are missing on the run image", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"run:mixin-2\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("previous image was built using platform API < 0.12", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetEnv(platform.EnvPlatformAPI, "0.11"))
})
when("there are no mixin labels", func() {
it("allows rebase", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("there are invalid mixin labels", func() {
it("errors", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "thisisn'tvalid!"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "get app image mixins: failed to unmarshal context of label 'io.buildpacks.stack.mixins': invalid character 'h' in literal true (expecting 'r')")
})
})
when("mixins are not present in either image", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "null"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "null"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("mixins are not present on the app image", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "null"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("mixins match on the app and run images", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("extra mixins are present on the run image", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\", \"mixin-3\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("mixins on the app image have stage specifiers that do not match the run image", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"mixin-2\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("mixins on the run image have stage specifiers that do not match the app image", func() {
it("allows rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"run:mixin-1\", \"run:mixin-2\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("mixins are missing on the run image", func() {
it("does not allow rebase", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.MixinsLabel, "[\"mixin-1\", \"run:mixin-2\"]"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.MixinsLabel, "[\"run:mixin-2\"]"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "missing required mixin(s): mixin-1")
})
})
})
})
when("validating targets and stacks", func() {
it.Before(func() {
rebaser.Force = false
})
when("previous image was built using unknown platform API", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetEnv(platform.EnvPlatformAPI, ""))
})
when("targets are different", func() {
it("allows rebase with missing labels", func() {
h.AssertNil(t, fakeAppImage.SetOS(""))
h.AssertNil(t, fakeNewBaseImage.SetOS("linux"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
it("allows rebase with mismatched variants", func() {
h.AssertNil(t, fakeAppImage.SetVariant("variant1"))
h.AssertNil(t, fakeNewBaseImage.SetVariant("variant2"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("stacks are different", func() {
it("errors and prevents the rebase from taking place when the stacks are different", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.cflinuxfs3"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "incompatible stack: 'io.buildpacks.stacks.cflinuxfs3' is not compatible with 'io.buildpacks.stacks.bionic'")
})
it("errors and prevents the rebase from taking place when the new base image has no stack defined", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, ""))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "stack not defined on new base image")
})
it("errors and prevents the rebase from taking place when the app image has no stack defined", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, ""))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.cflinuxfs3"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "stack not defined on app image")
})
})
})
when("previous image was built using platform API < 0.12", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetEnv(platform.EnvPlatformAPI, "0.11"))
})
when("targets are different", func() {
it("allows rebase with missing labels", func() {
h.AssertNil(t, fakeAppImage.SetOS(""))
h.AssertNil(t, fakeNewBaseImage.SetOS("linux"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
it("allows rebase with mismatched variants", func() {
h.AssertNil(t, fakeAppImage.SetVariant("variant1"))
h.AssertNil(t, fakeNewBaseImage.SetVariant("variant2"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
when("stacks are different", func() {
it("errors and prevents the rebase from taking place when the stacks are different", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.cflinuxfs3"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "incompatible stack: 'io.buildpacks.stacks.cflinuxfs3' is not compatible with 'io.buildpacks.stacks.bionic'")
})
it("errors and prevents the rebase from taking place when the new base image has no stack defined", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, ""))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "stack not defined on new base image")
})
it("errors and prevents the rebase from taking place when the app image has no stack defined", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, ""))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.cflinuxfs3"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, "stack not defined on app image")
})
})
})
when("previous image was built using platform API >= 0.12", func() {
when("targets are different", func() {
when("force", func() {
when("false", func() {
it.Before(func() {
rebaser.Force = false
})
it("errors and prevents the rebase from taking place when the os are different", func() {
h.AssertNil(t, fakeAppImage.SetOS("linux"))
h.AssertNil(t, fakeNewBaseImage.SetOS("notlinux"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `unable to satisfy target os/arch constraints; new run image: {"os":"notlinux","arch":"amd64"}, old run image: {"os":"linux","arch":"amd64"}`)
})
it("errors and prevents the rebase from taking place when the architecture are different", func() {
h.AssertNil(t, fakeAppImage.SetArchitecture("amd64"))
h.AssertNil(t, fakeNewBaseImage.SetArchitecture("arm64"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `unable to satisfy target os/arch constraints; new run image: {"os":"linux","arch":"arm64"}, old run image: {"os":"linux","arch":"amd64"}`)
})
it("errors and prevents the rebase from taking place when the architecture variant are different", func() {
h.AssertNil(t, fakeAppImage.SetVariant("variant1"))
h.AssertNil(t, fakeNewBaseImage.SetVariant("variant2"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `unable to satisfy target os/arch constraints; new run image: {"os":"linux","arch":"amd64","arch-variant":"variant2"}, old run image: {"os":"linux","arch":"amd64","arch-variant":"variant1"}`)
})
it("errors and prevents the rebase from taking place when the io.buildpacks.distribution.name are different", func() {
h.AssertNil(t, fakeAppImage.SetLabel("io.buildpacks.distribution.name", "distro1"))
h.AssertNil(t, fakeNewBaseImage.SetLabel("io.buildpacks.distribution.name", "distro2"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `unable to satisfy target os/arch constraints; new run image: {"os":"linux","arch":"amd64","distribution":{"name":"distro2","version":""}}, old run image: {"os":"linux","arch":"amd64","distribution":{"name":"distro1","version":""}}`)
})
it("errors and prevents the rebase from taking place when the io.buildpacks.distribution.version are different", func() {
h.AssertNil(t, fakeAppImage.SetLabel("io.buildpacks.distribution.version", "version1"))
h.AssertNil(t, fakeNewBaseImage.SetLabel("io.buildpacks.distribution.version", "version2"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertError(t, err, `unable to satisfy target os/arch constraints; new run image: {"os":"linux","arch":"amd64","distribution":{"name":"","version":"version2"}}, old run image: {"os":"linux","arch":"amd64","distribution":{"name":"","version":"version1"}}`)
})
})
})
when("true", func() {
it.Before(func() {
rebaser.Force = true
})
it("warns and allows rebase when the os are different", func() {
h.AssertNil(t, fakeAppImage.SetOS("linux"))
h.AssertNil(t, fakeNewBaseImage.SetOS("notlinux"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
assertLogEntry(t, logHandler, `unable to satisfy target os/arch constraints; new run image: {"os":"notlinux","arch":"amd64"}, old run image: {"os":"linux","arch":"amd64"}`)
})
})
})
when("stacks are different", func() {
it("allows rebase when the stacks are different", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.cflinuxfs3"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
it("allows rebase when the new base image has no stack defined", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.bionic"))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, ""))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
it("allows rebase when the app image has no stack defined", func() {
h.AssertNil(t, fakeAppImage.SetLabel(platform.StackIDLabel, ""))
h.AssertNil(t, fakeNewBaseImage.SetLabel(platform.StackIDLabel, "io.buildpacks.stacks.cflinuxfs3"))
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, fakeAppImage.Name(), additionalNames)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.Base(), "some-repo/new-base-image")
})
})
})
})
when("outputImageRef is different than workingImage name", func() {
var outputImageRef = "fizz"
it("saves using outputImageRef, not the app image name", func() {
_, err := rebaser.Rebase(fakeAppImage, fakeNewBaseImage, outputImageRef, additionalNames)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.SavedNames(), append(additionalNames, outputImageRef)...)
h.AssertDoesNotContain(t, fakeAppImage.SavedNames(), fakePreviousImage.Name())
})
})
})
}