diff options
Diffstat (limited to 'migrate/v1/migratev1_test.go')
| -rw-r--r-- | migrate/v1/migratev1_test.go | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/migrate/v1/migratev1_test.go b/migrate/v1/migratev1_test.go new file mode 100644 index 0000000..ef4ac27 --- /dev/null +++ b/migrate/v1/migratev1_test.go @@ -0,0 +1,448 @@ +package v1 + +import ( + "crypto/rand" + "encoding/hex" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "reflect" + "runtime" + "testing" + + "github.com/docker/distribution/reference" + "github.com/docker/docker/distribution/metadata" + "github.com/docker/docker/image" + "github.com/docker/docker/layer" + "github.com/docker/docker/pkg/ioutils" + "github.com/opencontainers/go-digest" +) + +func TestMigrateRefs(t *testing.T) { + tmpdir, err := ioutil.TempDir("", "migrate-tags") + if err != nil { + t.Fatal(err) + } + defer os.RemoveAll(tmpdir) + + ioutil.WriteFile(filepath.Join(tmpdir, "repositories-generic"), []byte(`{"Repositories":{"busybox":{"latest":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108","sha256:16a2a52884c2a9481ed267c2d46483eac7693b813a63132368ab098a71303f8a":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108"},"registry":{"2":"5d165b8e4b203685301c815e95663231691d383fd5e3d3185d1ce3f8dddead3d","latest":"8d5547a9f329b1d3f93198cd661fb5117e5a96b721c5cf9a2c389e7dd4877128"}}}`), 0600) + + ta := &mockTagAdder{} + err = migrateRefs(tmpdir, "generic", ta, map[string]image.ID{ + "5d165b8e4b203685301c815e95663231691d383fd5e3d3185d1ce3f8dddead3d": image.ID("sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"), + "b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108": image.ID("sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9"), + "abcdef3434c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108": image.ID("sha256:56434342345ae68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"), + }) + if err != nil { + t.Fatal(err) + } + + expected := map[string]string{ + "docker.io/library/busybox:latest": "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9", + "docker.io/library/busybox@sha256:16a2a52884c2a9481ed267c2d46483eac7693b813a63132368ab098a71303f8a": "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9", + "docker.io/library/registry:2": "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae", + } + + if !reflect.DeepEqual(expected, ta.refs) { + t.Fatalf("Invalid migrated tags: expected %q, got %q", expected, ta.refs) + } + + // second migration is no-op + ioutil.WriteFile(filepath.Join(tmpdir, "repositories-generic"), []byte(`{"Repositories":{"busybox":{"latest":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108"`), 0600) + err = migrateRefs(tmpdir, "generic", ta, map[string]image.ID{ + "b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108": image.ID("sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9"), + }) + if err != nil { + t.Fatal(err) + } + if !reflect.DeepEqual(expected, ta.refs) { + t.Fatalf("Invalid migrated tags: expected %q, got %q", expected, ta.refs) + } +} + +func TestMigrateContainers(t *testing.T) { + // TODO Windows: Figure out why this is failing + if runtime.GOOS == "windows" { + t.Skip("Failing on Windows") + } + if runtime.GOARCH != "amd64" { + t.Skip("Test tailored to amd64 architecture") + } + tmpdir, err := ioutil.TempDir("", "migrate-containers") + if err != nil { + t.Fatal(err) + } + defer os.RemoveAll(tmpdir) + + err = addContainer(tmpdir, `{"State":{"Running":false,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":0,"ExitCode":0,"Error":"","StartedAt":"2015-11-10T21:42:40.604267436Z","FinishedAt":"2015-11-10T21:42:41.869265487Z"},"ID":"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c","Created":"2015-11-10T21:42:40.433831551Z","Path":"sh","Args":[],"Config":{"Hostname":"f780ee3f80e6","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":null,"Cmd":["sh"],"Image":"busybox","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"Image":"2c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093","NetworkSettings":{"Bridge":"","EndpointID":"","Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"HairpinMode":false,"IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"MacAddress":"","NetworkID":"","PortMapping":null,"Ports":null,"SandboxKey":"","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null},"ResolvConfPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/resolv.conf","HostnamePath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hostname","HostsPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hosts","LogPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c-json.log","Name":"/determined_euclid","Driver":"overlay","ExecDriver":"native-0.2","MountLabel":"","ProcessLabel":"","RestartCount":0,"UpdateDns":false,"HasBeenStartedBefore":false,"MountPoints":{},"Volumes":{},"VolumesRW":{},"AppArmorProfile":""}`) + if err != nil { + t.Fatal(err) + } + + // container with invalid image + err = addContainer(tmpdir, `{"State":{"Running":false,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":0,"ExitCode":0,"Error":"","StartedAt":"2015-11-10T21:42:40.604267436Z","FinishedAt":"2015-11-10T21:42:41.869265487Z"},"ID":"e780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c","Created":"2015-11-10T21:42:40.433831551Z","Path":"sh","Args":[],"Config":{"Hostname":"f780ee3f80e6","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":null,"Cmd":["sh"],"Image":"busybox","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"Image":"4c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093","NetworkSettings":{"Bridge":"","EndpointID":"","Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"HairpinMode":false,"IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"MacAddress":"","NetworkID":"","PortMapping":null,"Ports":null,"SandboxKey":"","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null},"ResolvConfPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/resolv.conf","HostnamePath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hostname","HostsPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hosts","LogPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c-json.log","Name":"/determined_euclid","Driver":"overlay","ExecDriver":"native-0.2","MountLabel":"","ProcessLabel":"","RestartCount":0,"UpdateDns":false,"HasBeenStartedBefore":false,"MountPoints":{},"Volumes":{},"VolumesRW":{},"AppArmorProfile":""}`) + if err != nil { + t.Fatal(err) + } + + ls := &mockMounter{} + + ifs, err := image.NewFSStoreBackend(filepath.Join(tmpdir, "imagedb")) + if err != nil { + t.Fatal(err) + } + + is, err := image.NewImageStore(ifs, runtime.GOOS, ls) + if err != nil { + t.Fatal(err) + } + + imgID, err := is.Create([]byte(`{"architecture":"amd64","config":{"AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Cmd":["sh"],"Entrypoint":null,"Env":null,"Hostname":"23304fc829f9","Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Labels":null,"OnBuild":null,"OpenStdin":false,"StdinOnce":false,"Tty":false,"Volumes":null,"WorkingDir":"","Domainname":"","User":""},"container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config":{"AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Entrypoint":null,"Env":null,"Hostname":"23304fc829f9","Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Labels":null,"OnBuild":null,"OpenStdin":false,"StdinOnce":false,"Tty":false,"Volumes":null,"WorkingDir":"","Domainname":"","User":""},"created":"2015-10-31T22:22:55.613815829Z","docker_version":"1.8.2","history":[{"created":"2015-10-31T22:22:54.690851953Z","created_by":"/bin/sh -c #(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"},{"created":"2015-10-31T22:22:55.613815829Z","created_by":"/bin/sh -c #(nop) CMD [\"sh\"]"}],"os":"linux","rootfs":{"type":"layers","diff_ids":["sha256:c6f988f4874bb0add23a778f753c65efe992244e148a1d2ec2a8b664fb66bbd1","sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"]}}`)) + if err != nil { + t.Fatal(err) + } + + err = migrateContainers(tmpdir, ls, is, map[string]image.ID{ + "2c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093": imgID, + }) + if err != nil { + t.Fatal(err) + } + + expected := []mountInfo{{ + "f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c", + "f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c", + "sha256:c3191d32a37d7159b2e30830937d2e30268ad6c375a773a8994911a3aba9b93f", + }} + if !reflect.DeepEqual(expected, ls.mounts) { + t.Fatalf("invalid mounts: expected %q, got %q", expected, ls.mounts) + } + + if actual, expected := ls.count, 0; actual != expected { + t.Fatalf("invalid active mounts: expected %d, got %d", expected, actual) + } + + config2, err := ioutil.ReadFile(filepath.Join(tmpdir, "containers", "f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c", "config.v2.json")) + if err != nil { + t.Fatal(err) + } + var config struct{ Image string } + err = json.Unmarshal(config2, &config) + if err != nil { + t.Fatal(err) + } + + if actual, expected := config.Image, string(imgID); actual != expected { + t.Fatalf("invalid image pointer in migrated config: expected %q, got %q", expected, actual) + } + +} + +func TestMigrateImages(t *testing.T) { + // TODO Windows: Figure out why this is failing + if runtime.GOOS == "windows" { + t.Skip("Failing on Windows") + } + if runtime.GOARCH != "amd64" { + t.Skip("Test tailored to amd64 architecture") + } + tmpdir, err := ioutil.TempDir("", "migrate-images") + if err != nil { + t.Fatal(err) + } + defer os.RemoveAll(tmpdir) + + // busybox from 1.9 + id1, err := addImage(tmpdir, `{"architecture":"amd64","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"23304fc829f9b9349416f6eb1afec162907eba3a328f51d53a17f8986f865d65","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"],"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"created":"2015-10-31T22:22:54.690851953Z","docker_version":"1.8.2","layer_id":"sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57","os":"linux"}`, "", "") + if err != nil { + t.Fatal(err) + } + + id2, err := addImage(tmpdir, `{"architecture":"amd64","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"created":"2015-10-31T22:22:55.613815829Z","docker_version":"1.8.2","layer_id":"sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4","os":"linux","parent_id":"sha256:039b63dd2cbaa10d6015ea574392530571ed8d7b174090f032211285a71881d0"}`, id1, "") + if err != nil { + t.Fatal(err) + } + + ls := &mockRegistrar{} + + ifs, err := image.NewFSStoreBackend(filepath.Join(tmpdir, "imagedb")) + if err != nil { + t.Fatal(err) + } + + is, err := image.NewImageStore(ifs, runtime.GOOS, ls) + if err != nil { + t.Fatal(err) + } + + ms, err := metadata.NewFSMetadataStore(filepath.Join(tmpdir, "distribution"), runtime.GOOS) + if err != nil { + t.Fatal(err) + } + mappings := make(map[string]image.ID) + + err = migrateImages(tmpdir, ls, is, ms, mappings) + if err != nil { + t.Fatal(err) + } + + expected := map[string]image.ID{ + id1: image.ID("sha256:ca406eaf9c26898414ff5b7b3a023c33310759d6203be0663dbf1b3a712f432d"), + id2: image.ID("sha256:a488bec94bb96b26a968f913d25ef7d8d204d727ca328b52b4b059c7d03260b6"), + } + + if !reflect.DeepEqual(mappings, expected) { + t.Fatalf("invalid image mappings: expected %q, got %q", expected, mappings) + } + + if actual, expected := ls.count, 2; actual != expected { + t.Fatalf("invalid register count: expected %q, got %q", expected, actual) + } + ls.count = 0 + + // next images are busybox from 1.8.2 + _, err = addImage(tmpdir, `{"id":"17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2","parent":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","created":"2015-10-31T22:22:55.613815829Z","container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"docker_version":"1.8.2","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux","Size":0}`, "", "sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4") + if err != nil { + t.Fatal(err) + } + + _, err = addImage(tmpdir, `{"id":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","created":"2015-10-31T22:22:54.690851953Z","container":"23304fc829f9b9349416f6eb1afec162907eba3a328f51d53a17f8986f865d65","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"],"Image":"","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"docker_version":"1.8.2","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux","Size":1108935}`, "", "sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57") + if err != nil { + t.Fatal(err) + } + + err = migrateImages(tmpdir, ls, is, ms, mappings) + if err != nil { + t.Fatal(err) + } + + expected["d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498"] = image.ID("sha256:c091bb33854e57e6902b74c08719856d30b5593c7db6143b2b48376b8a588395") + expected["17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2"] = image.ID("sha256:d963020e755ff2715b936065949472c1f8a6300144b922992a1a421999e71f07") + + if actual, expected := ls.count, 2; actual != expected { + t.Fatalf("invalid register count: expected %q, got %q", expected, actual) + } + + v2MetadataService := metadata.NewV2MetadataService(ms) + receivedMetadata, err := v2MetadataService.GetMetadata(layer.EmptyLayer.DiffID()) + if err != nil { + t.Fatal(err) + } + + expectedMetadata := []metadata.V2Metadata{ + {Digest: digest.Digest("sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57")}, + {Digest: digest.Digest("sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4")}, + } + + if !reflect.DeepEqual(expectedMetadata, receivedMetadata) { + t.Fatalf("invalid metadata: expected %q, got %q", expectedMetadata, receivedMetadata) + } + +} + +func TestMigrateUnsupported(t *testing.T) { + tmpdir, err := ioutil.TempDir("", "migrate-empty") + if err != nil { + t.Fatal(err) + } + defer os.RemoveAll(tmpdir) + + err = os.MkdirAll(filepath.Join(tmpdir, "graph"), 0700) + if err != nil { + t.Fatal(err) + } + + err = Migrate(tmpdir, "generic", nil, nil, nil, nil) + if err != errUnsupported { + t.Fatalf("expected unsupported error, got %q", err) + } +} + +func TestMigrateEmptyDir(t *testing.T) { + tmpdir, err := ioutil.TempDir("", "migrate-empty") + if err != nil { + t.Fatal(err) + } + defer os.RemoveAll(tmpdir) + + err = Migrate(tmpdir, "generic", nil, nil, nil, nil) + if err != nil { + t.Fatal(err) + } +} + +func addImage(dest, jsonConfig, parent, checksum string) (string, error) { + var config struct{ ID string } + if err := json.Unmarshal([]byte(jsonConfig), &config); err != nil { + return "", err + } + if config.ID == "" { + b := make([]byte, 32) + rand.Read(b) + config.ID = hex.EncodeToString(b) + } + contDir := filepath.Join(dest, "graph", config.ID) + if err := os.MkdirAll(contDir, 0700); err != nil { + return "", err + } + if err := ioutil.WriteFile(filepath.Join(contDir, "json"), []byte(jsonConfig), 0600); err != nil { + return "", err + } + if checksum != "" { + if err := ioutil.WriteFile(filepath.Join(contDir, "checksum"), []byte(checksum), 0600); err != nil { + return "", err + } + } + if err := ioutil.WriteFile(filepath.Join(contDir, ".migration-diffid"), []byte(layer.EmptyLayer.DiffID()), 0600); err != nil { + return "", err + } + if err := ioutil.WriteFile(filepath.Join(contDir, ".migration-size"), []byte("0"), 0600); err != nil { + return "", err + } + if parent != "" { + if err := ioutil.WriteFile(filepath.Join(contDir, "parent"), []byte(parent), 0600); err != nil { + return "", err + } + } + if checksum != "" { + if err := ioutil.WriteFile(filepath.Join(contDir, "checksum"), []byte(checksum), 0600); err != nil { + return "", err + } + } + return config.ID, nil +} + +func addContainer(dest, jsonConfig string) error { + var config struct{ ID string } + if err := json.Unmarshal([]byte(jsonConfig), &config); err != nil { + return err + } + contDir := filepath.Join(dest, "containers", config.ID) + if err := os.MkdirAll(contDir, 0700); err != nil { + return err + } + if err := ioutil.WriteFile(filepath.Join(contDir, "config.json"), []byte(jsonConfig), 0600); err != nil { + return err + } + return nil +} + +type mockTagAdder struct { + refs map[string]string +} + +func (t *mockTagAdder) AddTag(ref reference.Named, id digest.Digest, force bool) error { + if t.refs == nil { + t.refs = make(map[string]string) + } + t.refs[ref.String()] = id.String() + return nil +} +func (t *mockTagAdder) AddDigest(ref reference.Canonical, id digest.Digest, force bool) error { + return t.AddTag(ref, id, force) +} + +type mockRegistrar struct { + layers map[layer.ChainID]*mockLayer + count int +} + +func (r *mockRegistrar) RegisterByGraphID(graphID string, parent layer.ChainID, diffID layer.DiffID, tarDataFile string, size int64) (layer.Layer, error) { + r.count++ + l := &mockLayer{} + if parent != "" { + p, exists := r.layers[parent] + if !exists { + return nil, fmt.Errorf("invalid parent %q", parent) + } + l.parent = p + l.diffIDs = append(l.diffIDs, p.diffIDs...) + } + l.diffIDs = append(l.diffIDs, diffID) + if r.layers == nil { + r.layers = make(map[layer.ChainID]*mockLayer) + } + r.layers[l.ChainID()] = l + return l, nil +} +func (r *mockRegistrar) Release(l layer.Layer) ([]layer.Metadata, error) { + return nil, nil +} +func (r *mockRegistrar) Get(layer.ChainID) (layer.Layer, error) { + return nil, nil +} + +type mountInfo struct { + name, graphID, parent string +} +type mockMounter struct { + mounts []mountInfo + count int +} + +func (r *mockMounter) CreateRWLayerByGraphID(name string, graphID string, parent layer.ChainID) error { + r.mounts = append(r.mounts, mountInfo{name, graphID, string(parent)}) + return nil +} +func (r *mockMounter) Unmount(string) error { + r.count-- + return nil +} +func (r *mockMounter) Get(layer.ChainID) (layer.Layer, error) { + return nil, nil +} + +func (r *mockMounter) Release(layer.Layer) ([]layer.Metadata, error) { + return nil, nil +} + +type mockLayer struct { + diffIDs []layer.DiffID + parent *mockLayer +} + +func (l *mockLayer) TarStream() (io.ReadCloser, error) { + return nil, nil +} + +func (ml *mockLayer) TarSeekStream() (ioutils.ReadSeekCloser, error) { + return nil, fmt.Errorf("not implemented") +} + +func (l *mockLayer) TarStreamFrom(layer.ChainID) (io.ReadCloser, error) { + return nil, nil +} + +func (l *mockLayer) ChainID() layer.ChainID { + return layer.CreateChainID(l.diffIDs) +} + +func (l *mockLayer) DiffID() layer.DiffID { + return l.diffIDs[len(l.diffIDs)-1] +} + +func (l *mockLayer) Parent() layer.Layer { + if l.parent == nil { + return nil + } + return l.parent +} + +func (l *mockLayer) Size() (int64, error) { + return 0, nil +} + +func (l *mockLayer) DiffSize() (int64, error) { + return 0, nil +} + +func (l *mockLayer) Platform() layer.Platform { + return "" +} + +func (l *mockLayer) Metadata() (map[string]string, error) { + return nil, nil +} |