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Move the inspect command to "image inspect"
The inspect command needed a bunch of code that was only present in the "internal/commands" package. The patch is big but it's only moving code around: * cnab.go was split into multiple files: * credentials.go -> all things credentials * driver/docker.go -> mainly for the driver.Prepare that all the commands use * registry.go -> has the method to get insecure registries from engine Signed-off-by: Djordje Lukic <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package cnab | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/deislabs/cnab-go/bundle" | ||
| "github.com/docker/app/internal" | ||
| "github.com/docker/app/internal/log" | ||
| "github.com/docker/app/internal/packager" | ||
| "github.com/docker/app/internal/store" | ||
| appstore "github.com/docker/app/internal/store" | ||
| "github.com/docker/cli/cli/command" | ||
| "github.com/docker/cnab-to-oci/remotes" | ||
| "github.com/docker/distribution/reference" | ||
| ) | ||
|
|
||
| type nameKind uint | ||
|
|
||
| const ( | ||
| _ nameKind = iota | ||
| nameKindEmpty | ||
| nameKindFile | ||
| nameKindDir | ||
| nameKindReference | ||
| ) | ||
|
|
||
| func getAppNameKind(name string) (string, nameKind) { | ||
| if name == "" { | ||
| return name, nameKindEmpty | ||
| } | ||
| // name can be a bundle.json or bundle.cnab file, or a dockerapp directory | ||
| st, err := os.Stat(name) | ||
| if os.IsNotExist(err) { | ||
| // try with .dockerapp extension | ||
| st, err = os.Stat(name + internal.AppExtension) | ||
| if err == nil { | ||
| name += internal.AppExtension | ||
| } | ||
| } | ||
| if err != nil { | ||
| return name, nameKindReference | ||
| } | ||
| if st.IsDir() { | ||
| return name, nameKindDir | ||
| } | ||
| return name, nameKindFile | ||
| } | ||
|
|
||
| func extractAndLoadAppBasedBundle(dockerCli command.Cli, name string) (*bundle.Bundle, string, error) { | ||
| app, err := packager.Extract(name) | ||
| if err != nil { | ||
| return nil, "", err | ||
| } | ||
| defer app.Cleanup() | ||
| bndl, err := packager.MakeBundleFromApp(dockerCli, app, nil) | ||
| return bndl, "", err | ||
| } | ||
|
|
||
| func loadBundleFromFile(filename string) (*bundle.Bundle, error) { | ||
| b := &bundle.Bundle{} | ||
| data, err := ioutil.ReadFile(filename) | ||
| if err != nil { | ||
| return b, err | ||
| } | ||
| return bundle.Unmarshal(data) | ||
| } | ||
|
|
||
| // ResolveBundle looks for a CNAB bundle which can be in a Docker App Package format or | ||
| // a bundle stored locally or in the bundle store. It returns a built or found bundle, | ||
| // a reference to the bundle if it is found in the bundlestore, and an error. | ||
| func ResolveBundle(dockerCli command.Cli, bundleStore appstore.BundleStore, name string) (*bundle.Bundle, string, error) { | ||
| // resolution logic: | ||
| // - if there is a docker-app package in working directory, or an http:// / https:// prefix, use packager.Extract result | ||
| // - the name has a .json or .cnab extension and refers to an existing file or web resource: load the bundle | ||
| // - name matches a bundle name:version stored in the bundle store: use it | ||
| // - pull the bundle from the registry and add it to the bundle store | ||
| name, kind := getAppNameKind(name) | ||
| switch kind { | ||
| case nameKindFile: | ||
| if strings.HasSuffix(name, internal.AppExtension) { | ||
| return extractAndLoadAppBasedBundle(dockerCli, name) | ||
| } | ||
| bndl, err := loadBundleFromFile(name) | ||
| return bndl, "", err | ||
| case nameKindDir, nameKindEmpty: | ||
| return extractAndLoadAppBasedBundle(dockerCli, name) | ||
| case nameKindReference: | ||
| bndl, tagRef, err := GetBundle(dockerCli, bundleStore, name) | ||
| if err != nil { | ||
| return nil, "", err | ||
| } | ||
| return bndl, tagRef.String(), err | ||
| } | ||
| return nil, "", fmt.Errorf("could not resolve bundle %q", name) | ||
| } | ||
|
|
||
| // GetBundle searches for the bundle locally and tries to pull it if not found | ||
| func GetBundle(dockerCli command.Cli, bundleStore appstore.BundleStore, name string) (*bundle.Bundle, reference.Reference, error) { | ||
| ref, err := store.StringToRef(name) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| bndl, err := bundleStore.Read(ref) | ||
| if err != nil { | ||
| fmt.Fprintf(dockerCli.Err(), "Unable to find application image %q locally\n", reference.FamiliarString(ref)) | ||
|
|
||
| fmt.Fprintf(dockerCli.Out(), "Pulling from registry...\n") | ||
| if named, ok := ref.(reference.Named); ok { | ||
| bndl, err = PullBundle(dockerCli, bundleStore, named) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return bndl, ref, nil | ||
| } | ||
|
|
||
| // PullBundle pulls the bundle and stores it into the bundle store | ||
| func PullBundle(dockerCli command.Cli, bundleStore appstore.BundleStore, tagRef reference.Named) (*bundle.Bundle, error) { | ||
| insecureRegistries, err := internal.InsecureRegistriesFromEngine(dockerCli) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("could not retrieve insecure registries: %v", err) | ||
| } | ||
|
|
||
| bndl, err := remotes.Pull(log.WithLogContext(context.Background()), reference.TagNameOnly(tagRef), remotes.CreateResolver(dockerCli.ConfigFile(), insecureRegistries...)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if _, err := bundleStore.Store(tagRef, bndl); err != nil { | ||
| return nil, err | ||
| } | ||
| return bndl, nil | ||
| } |
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