56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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reference "github.com/distribution/reference"
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imagedigest "github.com/opencontainers/go-digest"
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)
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// ParseImageReferences parses a list of arbitrary image references and returns
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// the repotags and repodigests
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func ParseImageReferences(refs []string) ([]string, []string) {
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var tags, digests []string
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for _, ref := range refs {
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parsed, err := reference.ParseAnyReference(ref)
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if err != nil {
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continue
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}
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if _, ok := parsed.(reference.Canonical); ok {
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digests = append(digests, parsed.String())
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} else if _, ok := parsed.(reference.Tagged); ok {
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tags = append(tags, parsed.String())
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}
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}
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return tags, digests
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}
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// GetRepoDigestAndTag returns image repoDigest and repoTag of the named image reference.
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func GetRepoDigestAndTag(namedRef reference.Named, digest imagedigest.Digest, schema1 bool) (string, string) {
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var repoTag, repoDigest string
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if _, ok := namedRef.(reference.NamedTagged); ok {
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repoTag = namedRef.String()
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}
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if _, ok := namedRef.(reference.Canonical); ok {
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repoDigest = namedRef.String()
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} else if !schema1 {
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// digest is not actual repo digest for schema1 image.
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repoDigest = namedRef.Name() + "@" + digest.String()
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}
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return repoDigest, repoTag
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}
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