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exporter_test.go
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exporter_test.go
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package lifecycle_test
import (
"encoding/json"
"fmt"
"io"
"math/rand"
"os"
"path/filepath"
"runtime"
"strings"
"testing"
"time"
"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/golang/mock/gomock"
"github.com/google/go-containerregistry/pkg/name"
"github.com/sclevine/spec"
specreport "github.com/sclevine/spec/report"
"github.com/buildpacks/lifecycle"
"github.com/buildpacks/lifecycle/api"
"github.com/buildpacks/lifecycle/buildpack"
"github.com/buildpacks/lifecycle/internal/path"
"github.com/buildpacks/lifecycle/launch"
"github.com/buildpacks/lifecycle/layers"
"github.com/buildpacks/lifecycle/platform"
h "github.com/buildpacks/lifecycle/testhelpers"
"github.com/buildpacks/lifecycle/testmock"
)
func TestExporter(t *testing.T) {
rand.Seed(time.Now().UTC().UnixNano())
spec.Run(t, "Exporter", testExporter, spec.Parallel(), spec.Report(specreport.Terminal{}))
}
func testExporter(t *testing.T, when spec.G, it spec.S) {
var (
exporter *lifecycle.Exporter
tmpDir string
mockCtrl *gomock.Controller
layerFactory *testmock.MockLayerFactory
fakeAppImage *fakes.Image
logHandler = memory.New()
opts = lifecycle.ExportOptions{
RunImageRef: "run-image-reference",
AdditionalNames: []string{},
}
platformAPI = api.Platform.Latest()
)
it.Before(func() {
mockCtrl = gomock.NewController(t)
layerFactory = testmock.NewMockLayerFactory(mockCtrl)
var err error
tmpDir, err = os.MkdirTemp("", "lifecycle.exporter.layer")
h.AssertNil(t, err)
launcherPath, err := filepath.Abs(filepath.Join("testdata", "exporter", "launcher"))
h.AssertNil(t, err)
opts.LauncherConfig = lifecycle.LauncherConfig{
Path: launcherPath,
Metadata: platform.LauncherMetadata{
Version: "1.2.3",
Source: platform.SourceMetadata{
Git: platform.GitMetadata{
Repository: "github.com/buildpacks/lifecycle",
Commit: "asdf1234",
},
},
},
}
opts.LayersDir = filepath.Join(tmpDir, "layers")
h.AssertNil(t, os.Mkdir(opts.LayersDir, 0777))
h.AssertNil(t, os.WriteFile(filepath.Join(tmpDir, "launcher"), []byte("some-launcher"), 0600))
opts.AppDir = filepath.Join(tmpDir, "app")
fakeAppImage = fakes.NewImage(
"some-repo/app-image",
"some-top-layer-sha",
local.IDIdentifier{
ImageID: "some-image-id",
},
)
opts.WorkingImage = fakeAppImage
opts.AdditionalNames = []string{"some-repo/app-image:foo", "some-repo/app-image:bar"}
// mock LayerFactory returns layer with deterministic characteristic for a give layer it
h.AssertNil(t, os.Mkdir(filepath.Join(tmpDir, "artifacts"), 0777))
layerFactory.EXPECT().
DirLayer(gomock.Any(), gomock.Any()).
DoAndReturn(func(id string, dir string) (layers.Layer, error) {
return createTestLayer(id, tmpDir)
}).AnyTimes()
layerFactory.EXPECT().
LauncherLayer(launcherPath).
DoAndReturn(func(path string) (layers.Layer, error) { return createTestLayer("launcher", tmpDir) }).
AnyTimes()
layerFactory.EXPECT().
ProcessTypesLayer(launch.Metadata{
Processes: []launch.Process{
{
Type: "some-process-type",
Command: launch.NewRawCommand([]string{"/some/command"}).
WithPlatformAPI(platformAPI),
Args: []string{"some", "command", "args"},
Direct: true,
BuildpackID: "buildpack.id",
PlatformAPI: platformAPI,
}},
}).
DoAndReturn(func(_ launch.Metadata) (layers.Layer, error) {
return createTestLayer("process-types", tmpDir)
}).
AnyTimes()
// if there are no slices return a single deterministic app layer
layerFactory.EXPECT().
SliceLayers(gomock.Any(), nil).
DoAndReturn(func(dir string, slices []layers.Slice) ([]layers.Layer, error) {
if dir != opts.AppDir {
return nil, fmt.Errorf("SliceLayers received %s but expected %s", dir, opts.AppDir)
}
layer, err := createTestLayer("app", tmpDir)
if err != nil {
return nil, err
}
return []layers.Layer{layer}, nil
}).AnyTimes()
exporter = &lifecycle.Exporter{
Buildpacks: []buildpack.GroupElement{
{ID: "buildpack.id", Version: "1.2.3", API: api.Buildpack.Latest().String()},
{ID: "other.buildpack.id", Version: "4.5.6", API: api.Buildpack.Latest().String(), Optional: false},
},
LayerFactory: layerFactory,
Logger: &log.Logger{Handler: logHandler},
PlatformAPI: platformAPI,
}
})
it.After(func() {
h.AssertNil(t, fakeAppImage.Cleanup())
h.AssertNil(t, os.RemoveAll(tmpDir))
mockCtrl.Finish()
})
when("#Export", func() {
when("previous image exists", func() {
it.Before(func() {
h.RecursiveCopy(t, filepath.Join("testdata", "exporter", "previous-image-exists", "layers"), opts.LayersDir)
fakeAppImage.AddPreviousLayer("launcher-digest", "")
fakeAppImage.AddPreviousLayer("local-reusable-layer-digest", "")
fakeAppImage.AddPreviousLayer("launch-layer-no-local-dir-digest", "")
fakeAppImage.AddPreviousLayer("process-types-digest", "")
fakeAppImage.AddPreviousLayer("launch.sbom-digest", "")
h.AssertNil(t, json.Unmarshal([]byte(`
{
"sbom": {
"sha": "launch.sbom-digest"
},
"buildpacks": [
{
"key": "buildpack.id",
"layers": {
"launch-layer-no-local-dir": {
"sha": "launch-layer-no-local-dir-digest",
"data": {
"oldkey": "oldval"
}
}
}
},
{
"key": "other.buildpack.id",
"layers": {
"layer4": {
"sha": "orig-layer4-sha",
"data": {
"layer4key": "layer4val"
}
},
"local-reusable-layer": {
"sha": "local-reusable-layer-digest"
}
}
}
],
"launcher": {
"sha": "launcher-digest"
},
"process-types": {
"sha": "process-types-digest"
}
}`), &opts.OrigMetadata))
})
when("there are slices", func() {
it.Before(func() {
opts.LayersDir = filepath.Join("testdata", "exporter", "app-slices", "layers")
layerFactory.EXPECT().
SliceLayers(
opts.AppDir,
[]layers.Slice{
{Paths: []string{"static/**/*.txt", "static/**/*.svg"}},
{Paths: []string{"static/misc/resources/**/*.csv", "static/misc/resources/**/*.tps"}},
},
).
Return([]layers.Layer{
{ID: "slice-1", Digest: "slice-1-digest"},
{ID: "slice-2", Digest: "slice-2-digest"},
{ID: "slice-3", Digest: "slice-3-digest"},
}, nil)
fakeAppImage.AddPreviousLayer("slice-1-digest", "")
opts.OrigMetadata.App = append(opts.OrigMetadata.App, platform.LayerMetadata{SHA: "slice-1-digest"})
})
it("reuses slice layer if the sha matches the sha in the archive metadata", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.ReusedLayers(), "slice-1-digest")
assertLogEntry(t, logHandler, "Reusing 1/3 app layer(s)")
assertLogEntry(t, logHandler, "Adding 2/3 app layer(s)")
})
})
when("structured SBOM", func() {
when("there is a 'launch=true' layer with a bom.<ext> file", func() {
it("reuses bom layers if the sha matches the sha in the metadata", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.ReusedLayers(), "launch.sbom-digest")
assertReuseLayerLog(t, logHandler, "buildpacksio/lifecycle:launch.sbom")
})
})
})
it("creates app layer on run image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "app")
assertLogEntry(t, logHandler, "Adding 1/1 app layer(s)")
})
it("creates config layer on Run image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "config")
assertAddLayerLog(t, logHandler, "buildpacksio/lifecycle:config")
})
it("reuses launcher layer if the sha matches the sha in the metadata", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.ReusedLayers(), "launcher-digest")
assertReuseLayerLog(t, logHandler, "launcher")
})
it("reuses process-types layer if the sha matches the sha in the metadata", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.ReusedLayers(), "process-types-digest")
assertReuseLayerLog(t, logHandler, "process-types")
})
it("reuses launch layers when only layer.toml is present", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.ReusedLayers(), "launch-layer-no-local-dir-digest")
assertReuseLayerLog(t, logHandler, "buildpack.id:launch-layer-no-local-dir")
})
it("reuses cached launch layers if the local sha matches the sha in the metadata", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.ReusedLayers(), "local-reusable-layer-digest")
assertReuseLayerLog(t, logHandler, "other.buildpack.id:local-reusable-layer")
})
when("the launch flag is in the top level table", func() {
it.Before(func() {
exporter.Buildpacks = []buildpack.GroupElement{{ID: "bad.buildpack.id", API: api.Buildpack.Latest().String()}}
fakeAppImage.AddPreviousLayer("bad-layer", "")
opts.OrigMetadata = platform.LayersMetadata{
Buildpacks: []buildpack.LayersMetadata{{
ID: "bad.buildpack.id",
Layers: map[string]buildpack.LayerMetadata{"bad-layer": {SHA: "bad-layer"}},
}},
}
})
it("should error", func() {
_, err := exporter.Export(opts)
h.AssertNotNil(t, err)
expected := "failed to parse metadata for layers '[bad.buildpack.id:bad-layer]'"
h.AssertStringContains(t, err.Error(), expected)
h.AssertEq(t, len(fakeAppImage.ReusedLayers()), 0)
})
})
it("adds new launch layers", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "buildpack.id:new-launch-layer")
assertAddLayerLog(t, logHandler, "buildpack.id:new-launch-layer")
})
it("adds new launch layers from a second buildpack", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "other.buildpack.id:new-launch-layer")
assertAddLayerLog(t, logHandler, "other.buildpack.id:new-launch-layer")
})
it("only adds expected layers", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
// expects 4 layers
// 1. app layer
// 2. config layer
// 3-4. buildpack layers
h.AssertEq(t, fakeAppImage.NumberOfAddedLayers(), 4)
})
it("only reuses expected layers", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
// expects 4 layers
// 1. launcher layer
// 2. process-types layer
// 3-4. buildpack layers
// 5. BOM layer
h.AssertEq(t, len(fakeAppImage.ReusedLayers()), 5)
})
it("saves lifecycle metadata with layer info", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.lifecycle.metadata")
h.AssertNil(t, err)
var meta platform.LayersMetadata
if err := json.Unmarshal([]byte(metadataJSON), &meta); err != nil {
t.Fatalf("badly formatted metadata: %s", err)
}
t.Log("adds run image metadata to label")
h.AssertEq(t, meta.RunImage.TopLayer, "some-top-layer-sha")
h.AssertEq(t, meta.RunImage.Reference, "run-image-reference")
t.Log("adds layer shas to metadata label")
h.AssertEq(t, meta.App[0].SHA, "app-digest")
h.AssertEq(t, meta.Config.SHA, "config-digest")
h.AssertEq(t, meta.Launcher.SHA, "launcher-digest")
h.AssertEq(t, meta.ProcessTypes.SHA, "process-types-digest")
h.AssertEq(t, meta.Buildpacks[0].ID, "buildpack.id")
h.AssertEq(t, meta.Buildpacks[0].Version, "1.2.3")
h.AssertEq(t, meta.Buildpacks[0].Layers["launch-layer-no-local-dir"].SHA, "launch-layer-no-local-dir-digest")
h.AssertEq(t, meta.Buildpacks[0].Layers["new-launch-layer"].SHA, "new-launch-layer-digest")
h.AssertEq(t, meta.Buildpacks[1].ID, "other.buildpack.id")
h.AssertEq(t, meta.Buildpacks[1].Version, "4.5.6")
h.AssertEq(t, meta.Buildpacks[1].Layers["new-launch-layer"].SHA, "new-launch-layer-digest")
t.Log("adds buildpack layer metadata to label")
h.AssertEq(t, meta.Buildpacks[0].Layers["launch-layer-no-local-dir"].Data, map[string]interface{}{
"mykey": "updated launch-layer-no-local-dir val",
})
h.AssertEq(t, meta.Buildpacks[0].Layers["new-launch-layer"].Data, map[string]interface{}{
"somekey": "someval",
})
h.AssertEq(t, meta.Buildpacks[1].Layers["local-reusable-layer"].Data, map[string]interface{}{
"mykey": "updated locally reusable layer metadata val",
})
})
when("run image metadata", func() {
it("saves run image metadata to the runImage key", func() {
opts.RunImageForExport = platform.RunImageForExport{
Image: "some/run",
Mirrors: []string{"registry.example.com/some/run", "other.example.com/some/run"},
}
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.lifecycle.metadata")
h.AssertNil(t, err)
var meta platform.LayersMetadata
if err := json.Unmarshal([]byte(metadataJSON), &meta); err != nil {
t.Fatalf("badly formatted metadata: %s", err)
}
h.AssertNil(t, err)
h.AssertEq(t, meta.RunImage.Image, "some/run")
h.AssertEq(t, meta.RunImage.Mirrors, []string{"registry.example.com/some/run", "other.example.com/some/run"})
h.AssertEq(t, meta.Stack, (*platform.StackMetadata)(nil))
})
when("platform api < 0.12", func() {
platformAPI = api.MustParse("0.11")
it("saves run image metadata to the stack key", func() {
opts.Stack = platform.StackMetadata{
RunImage: platform.RunImageForExport{
Image: "some/run",
Mirrors: []string{"registry.example.com/some/run", "other.example.com/some/run"},
},
}
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.lifecycle.metadata")
h.AssertNil(t, err)
var meta platform.LayersMetadata
if err := json.Unmarshal([]byte(metadataJSON), &meta); err != nil {
t.Fatalf("badly formatted metadata: %s", err)
}
h.AssertNil(t, err)
h.AssertEq(t, meta.Stack.RunImage.Image, "some/run")
h.AssertEq(t, meta.Stack.RunImage.Mirrors, []string{"registry.example.com/some/run", "other.example.com/some/run"})
h.AssertEq(t, meta.RunImage.Image, "")
h.AssertEq(t, meta.RunImage.Mirrors, []string(nil))
})
})
})
when("build metadata label", func() {
it("contains the expected information", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.build.metadata")
h.AssertNil(t, err)
t.Log("bom is omitted")
t.Log("command is array")
expectedJSON := `{
"buildpacks": [
{
"id": "buildpack.id",
"version": "1.2.3",
"homepage": "buildpack homepage"
},
{
"id": "other.buildpack.id",
"version": "4.5.6",
"homepage": "other buildpack homepage"
}
],
"launcher": {
"version": "1.2.3",
"source": {
"git": {
"repository": "github.com/buildpacks/lifecycle",
"commit": "asdf1234"
}
}
},
"processes": [
{
"type": "some-process-type",
"direct": true,
"command": ["/some/command"],
"args": ["some", "command", "args"],
"buildpackID": "buildpack.id"
}
]
}
`
h.AssertJSONEq(t, expectedJSON, metadataJSON)
})
when("platform api < 0.9", func() {
platformAPI = api.MustParse("0.8")
when("metadata.toml is missing bom and has empty process list", func() {
it.Before(func() {
err := os.WriteFile(filepath.Join(opts.LayersDir, "config", "metadata.toml"), []byte(`
processes = []
[[buildpacks]]
id = "buildpack.id"
version = "1.2.3"
[[buildpacks]]
id = "other.buildpack.id"
version = "4.5.6"
`),
os.ModePerm,
)
h.AssertNil(t, err)
})
it("bom is null and processes is an empty array", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.build.metadata")
h.AssertNil(t, err)
expectedJSON := `
{
"bom": null,
"buildpacks": [
{
"id": "buildpack.id",
"version": "1.2.3"
},
{
"id": "other.buildpack.id",
"version": "4.5.6"
}
],
"launcher": {
"version": "1.2.3",
"source": {
"git": {
"repository": "github.com/buildpacks/lifecycle",
"commit": "asdf1234"
}
}
},
"processes": []
}
`
h.AssertJSONEq(t, expectedJSON, metadataJSON)
})
})
it("contains the expected information", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.build.metadata")
h.AssertNil(t, err)
t.Log("command is string")
expectedJSON := `{
"bom": [
{
"name": "Spring Auto-reconfiguration",
"version": "2.7.0",
"buildpack": {
"id": "buildpack.id",
"version": "1.2.3"
},
"metadata": {
"licenses": [
{
"type": "Apache-2.0"
}
],
"sha256": "0d524877db7344ec34620f7e46254053568292f5ce514f74e3a0e9b2dbfc338b",
"stacks": [
"io.buildpacks.stacks.bionic",
"org.cloudfoundry.stacks.cflinuxfs3"
],
"uri": "https://example.com"
}
}
],
"buildpacks": [
{
"id": "buildpack.id",
"version": "1.2.3",
"homepage": "buildpack homepage"
},
{
"id": "other.buildpack.id",
"version": "4.5.6",
"homepage": "other buildpack homepage"
}
],
"launcher": {
"version": "1.2.3",
"source": {
"git": {
"repository": "github.com/buildpacks/lifecycle",
"commit": "asdf1234"
}
}
},
"processes": [
{
"type": "some-process-type",
"direct": true,
"command": "/some/command",
"args": ["some", "command", "args"],
"buildpackID": "buildpack.id"
}
]
}
`
h.AssertJSONEq(t, expectedJSON, metadataJSON)
})
})
})
when("there is project metadata", func() {
it("saves metadata with project info", func() {
opts.Project = platform.ProjectMetadata{
Source: &platform.ProjectSource{
Type: "git",
Version: map[string]interface{}{
"commit": "abcd1234",
},
Metadata: map[string]interface{}{
"repository": "github.com/buildpack/lifecycle",
"branch": "master",
},
}}
_, err := exporter.Export(opts)
h.AssertNil(t, err)
projectJSON, err := fakeAppImage.Label("io.buildpacks.project.metadata")
h.AssertNil(t, err)
var projectMD platform.ProjectMetadata
if err := json.Unmarshal([]byte(projectJSON), &projectMD); err != nil {
t.Fatalf("badly formatted metadata: %s", err)
}
t.Log("adds project metadata to label")
h.AssertEq(t, projectMD, opts.Project)
})
})
it("sets CNB_LAYERS_DIR", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := fakeAppImage.Env("CNB_LAYERS_DIR")
h.AssertNil(t, err)
h.AssertEq(t, val, opts.LayersDir)
})
it("sets CNB_APP_DIR", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := opts.WorkingImage.Env("CNB_APP_DIR")
h.AssertNil(t, err)
h.AssertEq(t, val, opts.AppDir)
})
it("sets CNB_PLATFORM_API", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := opts.WorkingImage.Env("CNB_PLATFORM_API")
h.AssertNil(t, err)
h.AssertEq(t, val, api.Platform.Latest().String())
})
it("sets CNB_DEPRECATION_MODE=quiet", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := opts.WorkingImage.Env("CNB_DEPRECATION_MODE")
h.AssertNil(t, err)
h.AssertEq(t, val, "quiet")
})
when("PATH", func() {
it.Before(func() {
h.AssertNil(t, fakeAppImage.SetEnv("PATH", "some-path"))
})
when("platform API >= 0.4", func() {
it("prepends the process and lifecycle dirs to PATH", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := opts.WorkingImage.Env("PATH")
h.AssertNil(t, err)
if runtime.GOOS == "windows" {
h.AssertEq(t, val, `c:\cnb\process;c:\cnb\lifecycle;some-path`)
} else {
h.AssertEq(t, val, `/cnb/process:/cnb/lifecycle:some-path`)
}
})
})
when("platform API < 0.4", func() {
it.Before(func() {
exporter.PlatformAPI = api.MustParse("0.3")
})
it("doesn't prepend the process dir", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := opts.WorkingImage.Env("PATH")
h.AssertNil(t, err)
h.AssertEq(t, val, "some-path")
})
})
})
when("working directory", func() {
when("platform API > 0.5", func() {
it("sets WorkingDir", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := fakeAppImage.WorkingDir()
h.AssertNil(t, err)
h.AssertEq(t, val, opts.AppDir)
})
})
when("platform API <= 0.5", func() {
platformAPI = api.MustParse("0.5")
it("doesn't set WorkingDir", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := fakeAppImage.WorkingDir()
h.AssertNil(t, err)
h.AssertEq(t, val, "")
})
})
})
it("sets empty CMD", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
val, err := fakeAppImage.Cmd()
h.AssertNil(t, err)
h.AssertEq(t, val, []string(nil))
})
it("saves run image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertEq(t, fakeAppImage.IsSaved(), true)
})
it("outputs saving message", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertLogEntry(t, logHandler, fmt.Sprintf("Saving %s...", fakeAppImage.Name()))
})
it("outputs image names", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertLogEntry(t, logHandler, `*** Images (some-image-i):`)
assertLogEntry(t, logHandler, fakeAppImage.Name())
assertLogEntry(t, logHandler, opts.AdditionalNames[0])
assertLogEntry(t, logHandler, opts.AdditionalNames[1])
})
when("one of the additional names fails", func() {
it("outputs identifier and image name with error", func() {
failingName := "not.a.tag@reference"
opts.AdditionalNames = append(opts.AdditionalNames, failingName)
_, err := exporter.Export(opts)
h.AssertError(t, err, fmt.Sprintf("failed to write image to the following tags: [%s:", failingName))
assertLogEntry(t, logHandler, `*** Images (some-image-i):`)
assertLogEntry(t, logHandler, fakeAppImage.Name())
assertLogEntry(t, logHandler, opts.AdditionalNames[0])
assertLogEntry(t, logHandler, opts.AdditionalNames[1])
assertLogEntry(t, logHandler, fmt.Sprintf("%s - could not parse reference", failingName))
})
})
when("previous image metadata is missing buildpack for reused layer", func() {
it.Before(func() {
opts.OrigMetadata = platform.LayersMetadata{
Buildpacks: []buildpack.LayersMetadata{{}},
}
})
it("returns an error", func() {
_, err := exporter.Export(opts)
h.AssertError(
t,
err,
"cannot reuse 'buildpack.id:launch-layer-no-local-dir', previous image has no metadata for layer 'buildpack.id:launch-layer-no-local-dir'",
)
})
})
when("previous image metadata is missing reused layer", func() {
it.Before(func() {
opts.OrigMetadata = platform.LayersMetadata{
Buildpacks: []buildpack.LayersMetadata{{
ID: "buildpack.id",
Layers: map[string]buildpack.LayerMetadata{},
}},
}
})
it("returns an error", func() {
_, err := exporter.Export(opts)
h.AssertError(
t,
err,
"cannot reuse 'buildpack.id:launch-layer-no-local-dir', previous image has no metadata for layer 'buildpack.id:launch-layer-no-local-dir'",
)
})
})
it("saves the image for all provided AdditionalNames", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, fakeAppImage.SavedNames(), append(opts.AdditionalNames, fakeAppImage.Name())...)
})
it("adds all names to the report", func() {
report, err := exporter.Export(opts)
h.AssertNil(t, err)
h.AssertContains(t, report.Image.Tags, append(opts.AdditionalNames, fakeAppImage.Name())...)
})
it("adds buildpack-provided labels to the image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
label, err := fakeAppImage.Label("some.label.key")
h.AssertNil(t, err)
h.AssertEq(t, label, "some-label-value")
label, err = fakeAppImage.Label("other.label.key")
h.AssertNil(t, err)
h.AssertEq(t, label, "other-label-value")
})
})
when("previous image doesn't exist", func() {
var (
nonExistingOriginalImage *fakes.Image
)
it.Before(func() {
var err error
h.RecursiveCopy(t, filepath.Join("testdata", "exporter", "previous-image-not-exist", "layers"), opts.LayersDir)
opts.AppDir, err = filepath.Abs(filepath.Join("testdata", "exporter", "previous-image-not-exist", "layers", "app"))
h.AssertNil(t, err)
nonExistingOriginalImage = fakes.NewImage("app/original-image", "", nil)
h.AssertNil(t, nonExistingOriginalImage.Delete())
})
it.After(func() {
h.AssertNil(t, nonExistingOriginalImage.Cleanup())
})
when("there are slices", func() {
it.Before(func() {
opts.LayersDir = filepath.Join("testdata", "exporter", "app-slices", "layers")
layerFactory.EXPECT().SliceLayers(
opts.AppDir,
[]layers.Slice{
{Paths: []string{"static/**/*.txt", "static/**/*.svg"}},
{Paths: []string{"static/misc/resources/**/*.csv", "static/misc/resources/**/*.tps"}},
},
).Return([]layers.Layer{
{ID: "slice-1", Digest: "slice-1-digest"},
{ID: "slice-2", Digest: "slice-2-digest"},
{ID: "slice-3", Digest: "slice-3-digest"},
}, nil)
})
it("exports slice layers", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertLogEntry(t, logHandler, "Adding 3/3 app layer(s)")
})
})
when("structured SBOM", func() {
when("there is a 'launch=true' layer with a bom.<ext> file", func() {
it("creates a bom layer on Run image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "launch.sbom")
assertAddLayerLog(t, logHandler, "buildpacksio/lifecycle:launch.sbom")
var result struct {
BOM struct {
SHA string `json:"sha"`
} `json:"sbom"`
}
data, err := fakeAppImage.Label("io.buildpacks.lifecycle.metadata")
h.AssertNil(t, err)
h.AssertNil(t, json.Unmarshal([]byte(data), &result))
h.AssertEq(t, result.BOM.SHA, "launch.sbom-digest")
})
})
})
it("creates app layer on run image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "app")
assertLogEntry(t, logHandler, "Adding 1/1 app layer(s)")
})
it("creates config layer on Run image", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "config")
assertAddLayerLog(t, logHandler, "buildpacksio/lifecycle:config")
})
it("creates a launcher layer", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "launcher")
assertAddLayerLog(t, logHandler, "launcher")
})
when("platform API >= 0.4", func() {
it("creates process-types layer", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "process-types")
assertAddLayerLog(t, logHandler, "process-types")
})
})
when("platform API < 0.4", func() {
it("doesn't create process-types layer", func() {
exporter.PlatformAPI = api.MustParse("0.3")
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertDoesNotHaveLayer(t, fakeAppImage, "process-types")
})
})
it("adds launch layers", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
assertHasLayer(t, fakeAppImage, "buildpack.id:layer1")
assertAddLayerLog(t, logHandler, "buildpack.id:layer1")
assertHasLayer(t, fakeAppImage, "buildpack.id:layer2")
assertAddLayerLog(t, logHandler, "buildpack.id:layer2")
})
it("only creates expected layers", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
// expects 6 layers
// 1. app layer
// 2. launcher layer
// 3. config layer
// 4. process-types layer
// 5-6. buildpack layers
// 7. BOM layer
h.AssertEq(t, fakeAppImage.NumberOfAddedLayers(), 7)
})
it("saves metadata with layer info", func() {
_, err := exporter.Export(opts)
h.AssertNil(t, err)
metadataJSON, err := fakeAppImage.Label("io.buildpacks.lifecycle.metadata")
h.AssertNil(t, err)
var meta platform.LayersMetadata
if err := json.Unmarshal([]byte(metadataJSON), &meta); err != nil {
t.Fatalf("badly formatted metadata: %s", err)
}