feat: add pushed tags to metadata (oras-project#1346)

Signed-off-by: Billy Zha <[email protected]>

cmd/oras/internal/display/handler.go

@@ -33,7 +33,7 @@ import (
 )
 
 // NewPushHandler returns status and metadata handlers for push command.
-func NewPushHandler(format string, tty *os.File, out io.Writer, verbose bool) (status.PushHandler, metadata.PushHandler) {
+func NewPushHandler(out io.Writer, format string, tty *os.File, verbose bool) (status.PushHandler, metadata.PushHandler) {
 	var statusHandler status.PushHandler
 	if tty != nil {
 		statusHandler = status.NewTTYPushHandler(tty)
@@ -56,7 +56,7 @@ func NewPushHandler(format string, tty *os.File, out io.Writer, verbose bool) (s
 }
 
 // NewAttachHandler returns status and metadata handlers for attach command.
-func NewAttachHandler(format string, tty *os.File, out io.Writer, verbose bool) (status.AttachHandler, metadata.AttachHandler) {
+func NewAttachHandler(out io.Writer, format string, tty *os.File, verbose bool) (status.AttachHandler, metadata.AttachHandler) {
 	var statusHandler status.AttachHandler
 	if tty != nil {
 		statusHandler = status.NewTTYAttachHandler(tty)
@@ -79,7 +79,7 @@ func NewAttachHandler(format string, tty *os.File, out io.Writer, verbose bool)
 }
 
 // NewPullHandler returns status and metadata handlers for pull command.
-func NewPullHandler(format string, path string, tty *os.File, out io.Writer, verbose bool) (status.PullHandler, metadata.PullHandler) {
+func NewPullHandler(out io.Writer, format string, path string, tty *os.File, verbose bool) (status.PullHandler, metadata.PullHandler) {
 	var statusHandler status.PullHandler
 	if tty != nil {
 		statusHandler = status.NewTTYPullHandler(tty)

cmd/oras/internal/display/metadata/json/attach.go

@@ -39,5 +39,5 @@ func NewAttachHandler(out io.Writer) metadata.AttachHandler {
 
 // OnCompleted is called when the attach command is completed.
 func (ah *AttachHandler) OnCompleted(opts *option.Target, root, subject ocispec.Descriptor) error {
-	return utils.PrintPrettyJSON(ah.out, model.NewPush(root, opts.Path))
+	return utils.PrintPrettyJSON(ah.out, model.NewAttach(root, opts.Path))
 }

cmd/oras/internal/display/metadata/json/push.go

@@ -23,12 +23,14 @@ import (
 	"oras.land/oras/cmd/oras/internal/display/metadata/model"
 	"oras.land/oras/cmd/oras/internal/display/utils"
 	"oras.land/oras/cmd/oras/internal/option"
+	"oras.land/oras/internal/contentutil"
 )
 
 // PushHandler handles JSON metadata output for push events.
 type PushHandler struct {
-	path string
-	out  io.Writer
+	path   string
+	out    io.Writer
+	tagged model.Tagged
 }
 
 // NewPushHandler creates a new handler for push events.
@@ -40,16 +42,20 @@ func NewPushHandler(out io.Writer) metadata.PushHandler {
 
 // OnTagged implements metadata.TagHandler.
 func (ph *PushHandler) OnTagged(desc ocispec.Descriptor, tag string) error {
+	ph.tagged.AddTag(tag)
 	return nil
 }
 
 // OnCopied is called after files are copied.
 func (ph *PushHandler) OnCopied(opts *option.Target) error {
+	if opts.RawReference != "" && !contentutil.IsDigest(opts.Reference) {
+		ph.tagged.AddTag(opts.Reference)
+	}
 	ph.path = opts.Path
 	return nil
 }
 
 // OnCompleted is called after the push is completed.
 func (ph *PushHandler) OnCompleted(root ocispec.Descriptor) error {
-	return utils.PrintPrettyJSON(ph.out, model.NewPush(root, ph.path))
+	return utils.PrintPrettyJSON(ph.out, model.NewPush(root, ph.path, ph.tagged.Tags()))
 }

cmd/oras/internal/display/metadata/model/attach.go

@@ -0,0 +1,28 @@
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package model
+
+import ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+
+// attach contains metadata formatted by oras attach.
+type attach struct {
+	Descriptor
+}
+
+// NewAttach returns a metadata getter for attach command.
+func NewAttach(desc ocispec.Descriptor, path string) any {
+	return attach{FromDescriptor(path, desc)}
+}

cmd/oras/internal/display/metadata/model/descriptor.go

@@ -21,13 +21,13 @@ import (
 
 // DigestReference is a reference to an artifact with digest.
 type DigestReference struct {
-	Ref string `json:"ref"`
+	Reference string `json:"reference"`
 }
 
 // NewDigestReference creates a new digest reference.
 func NewDigestReference(name string, digest string) DigestReference {
 	return DigestReference{
-		Ref: name + "@" + digest,
+		Reference: name + "@" + digest,
 	}
 }
 

cmd/oras/internal/display/metadata/model/pull.go

@@ -63,7 +63,7 @@ type pull struct {
 func NewPull(digestReference string, files []File) any {
 	return pull{
 		DigestReference: DigestReference{
-			Ref: digestReference,
+			Reference: digestReference,
 		},
 		Files: files,
 	}

cmd/oras/internal/display/metadata/model/push.go

@@ -15,14 +15,24 @@ limitations under the License.
 
 package model
 
-import ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+import (
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+)
 
 // push contains metadata formatted by oras push.
 type push struct {
 	Descriptor
+	ReferenceAsTags []string `json:"referenceAsTags"`
 }
 
 // NewPush returns a metadata getter for push command.
-func NewPush(desc ocispec.Descriptor, path string) any {
-	return push{FromDescriptor(path, desc)}
+func NewPush(desc ocispec.Descriptor, path string, tags []string) any {
+	var refAsTags []string
+	for _, tag := range tags {
+		refAsTags = append(refAsTags, path+":"+tag)
+	}
+	return push{
+		Descriptor:      FromDescriptor(path, desc),
+		ReferenceAsTags: refAsTags,
+	}
 }

cmd/oras/internal/display/metadata/model/tag.go

@@ -0,0 +1,43 @@
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package model
+
+import (
+	"slices"
+	"sync"
+)
+
+// Tagged contains metadata formatted by oras Tagged.
+type Tagged struct {
+	tags []string
+	lock sync.RWMutex
+}
+
+// AddTag adds a tag to the metadata.
+func (tag *Tagged) AddTag(t string) {
+	tag.lock.Lock()
+	defer tag.lock.Unlock()
+
+	tag.tags = append(tag.tags, t)
+}
+
+// Tags returns the tags.
+func (tag *Tagged) Tags() []string {
+	tag.lock.RLock()
+	defer tag.lock.RUnlock()
+	slices.Sort(tag.tags)
+	return tag.tags
+}

cmd/oras/internal/display/metadata/template/attach.go

@@ -40,5 +40,5 @@ func NewAttachHandler(out io.Writer, template string) metadata.AttachHandler {
 
 // OnCompleted formats the metadata of attach command.
 func (ah *AttachHandler) OnCompleted(opts *option.Target, root, subject ocispec.Descriptor) error {
-	return parseAndWrite(ah.out, model.NewPush(root, opts.Path), ah.template)
+	return parseAndWrite(ah.out, model.NewAttach(root, opts.Path), ah.template)
 }

cmd/oras/internal/display/metadata/template/push.go

@@ -22,12 +22,14 @@ import (
 	"oras.land/oras/cmd/oras/internal/display/metadata"
 	"oras.land/oras/cmd/oras/internal/display/metadata/model"
 	"oras.land/oras/cmd/oras/internal/option"
+	"oras.land/oras/internal/contentutil"
 )
 
 // PushHandler handles go-template metadata output for push events.
 type PushHandler struct {
 	template string
 	path     string
+	tagged   model.Tagged
 	out      io.Writer
 }
 
@@ -41,16 +43,20 @@ func NewPushHandler(out io.Writer, template string) metadata.PushHandler {
 
 // OnTagged implements metadata.TagHandler.
 func (ph *PushHandler) OnTagged(desc ocispec.Descriptor, tag string) error {
+	ph.tagged.AddTag(tag)
 	return nil
 }
 
 // OnStarted is called after files are copied.
 func (ph *PushHandler) OnCopied(opts *option.Target) error {
+	if opts.RawReference != "" && !contentutil.IsDigest(opts.Reference) {
+		ph.tagged.AddTag(opts.Reference)
+	}
 	ph.path = opts.Path
 	return nil
 }
 
 // OnCompleted is called after the push is completed.
 func (ph *PushHandler) OnCompleted(root ocispec.Descriptor) error {
-	return parseAndWrite(ph.out, model.NewPush(root, ph.path), ph.template)
+	return parseAndWrite(ph.out, model.NewPush(root, ph.path, ph.tagged.Tags()), ph.template)
 }

cmd/oras/root/attach.go

@@ -119,7 +119,7 @@ func runAttach(cmd *cobra.Command, opts *attachOptions) error {
 			Recommendation: `To attach to an existing artifact, please provide files via argument or annotations via flag "--annotation". Run "oras attach -h" for more options and examples`,
 		}
 	}
-	displayStatus, displayMetadata := display.NewAttachHandler(opts.Template, opts.TTY, cmd.OutOrStdout(), opts.Verbose)
+	displayStatus, displayMetadata := display.NewAttachHandler(cmd.OutOrStdout(), opts.Template, opts.TTY, opts.Verbose)
 
 	// prepare manifest
 	store, err := file.New("")

cmd/oras/root/discover.go

@@ -96,11 +96,11 @@ Example - Discover referrers of the manifest tagged 'v1' in an OCI image layout
 
 	cmd.Flags().StringVarP(&opts.artifactType, "artifact-type", "", "", "artifact type")
 	cmd.Flags().StringVarP(&opts.Template, "output", "o", "tree", "[Deprecated] format in which to display referrers (table, json, or tree). tree format will also show indirect referrers")
-	cmd.Flags().StringVarP(&opts.Template, "format", "", "tree", `[Experimental] Format output using a custom template:
+	cmd.Flags().StringVarP(&opts.Template, "format", "", "", `[Experimental] Format output using a custom template:
 'tree':       Get referrers recursively and print in tree format (default)
 'table':      Get direct referrers and output in table format
 'json':       Get direct referrers and output in JSON format
-'$TEMPLATE':  Print direct referrers using the given Go template.`)
+'$TEMPLATE':  Print direct referrers using the given Go template`)
 	opts.EnableDistributionSpecFlag()
 	option.ApplyFlags(&opts, cmd.Flags())
 	return oerrors.Command(cmd, &opts.Target)

cmd/oras/root/pull.go

@@ -135,7 +135,7 @@ func runPull(cmd *cobra.Command, opts *pullOptions) error {
 	dst.AllowPathTraversalOnWrite = opts.PathTraversal
 	dst.DisableOverwrite = opts.KeepOldFiles
 
-	statusHandler, metadataHandler := display.NewPullHandler(opts.Template, opts.Path, opts.TTY, cmd.OutOrStdout(), opts.Verbose)
+	statusHandler, metadataHandler := display.NewPullHandler(cmd.OutOrStdout(), opts.Template, opts.Path, opts.TTY, opts.Verbose)
 	desc, err := doPull(ctx, src, dst, copyOptions, metadataHandler, statusHandler, opts)
 	if err != nil {
 		if errors.Is(err, file.ErrPathTraversalDisallowed) {

cmd/oras/root/push.go

@@ -155,7 +155,7 @@ func runPush(cmd *cobra.Command, opts *pushOptions) error {
 	if err != nil {
 		return err
 	}
-	displayStatus, displayMetadata := display.NewPushHandler(opts.Template, opts.TTY, cmd.OutOrStdout(), opts.Verbose)
+	displayStatus, displayMetadata := display.NewPushHandler(cmd.OutOrStdout(), opts.Template, opts.TTY, opts.Verbose)
 
 	// prepare pack
 	packOpts := oras.PackManifestOptions{

cmd/oras/root/repo/tags.go

@@ -25,6 +25,7 @@ import (
 	"oras.land/oras/cmd/oras/internal/command"
 	oerrors "oras.land/oras/cmd/oras/internal/errors"
 	"oras.land/oras/cmd/oras/internal/option"
+	"oras.land/oras/internal/contentutil"
 )
 
 type showTagsOptions struct {
@@ -87,8 +88,7 @@ func showTags(cmd *cobra.Command, opts *showTagsOptions) error {
 	}
 	filter := ""
 	if opts.Reference != "" {
-		_, err := digest.Parse(opts.Reference)
-		if err == nil {
+		if contentutil.IsDigest(opts.Reference) {
 			filter = opts.Reference
 		} else {
 			desc, err := finder.Resolve(ctx, opts.Reference)

internal/contentutil/reference.go

@@ -0,0 +1,24 @@
+/*
+Copyright The ORAS Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package contentutil
+
+import "github.com/opencontainers/go-digest"
+
+// IsDigest checks if the given string is a valid digest.
+func IsDigest(tagOrDigest string) bool {
+	_, err := digest.Parse(tagOrDigest)
+	return err == nil
+}