github.com/GoogleContainerTools/skaffold@v1.39.18/pkg/skaffold/tag/sha256.go (about) 1 /* 2 Copyright 2019 The Skaffold Authors 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package tag 18 19 import ( 20 "context" 21 22 "github.com/GoogleContainerTools/skaffold/pkg/skaffold/docker" 23 "github.com/GoogleContainerTools/skaffold/pkg/skaffold/schema/latest" 24 ) 25 26 // ChecksumTagger tags an image by the sha256 of the image tarball 27 type ChecksumTagger struct{} 28 29 // GenerateTag returns either the current tag or `latest`. 30 func (t *ChecksumTagger) GenerateTag(ctx context.Context, image latest.Artifact) (string, error) { 31 parsed, err := docker.ParseReference(image.ImageName) 32 if err != nil { 33 return "", err 34 } 35 36 if parsed.Tag == "" { 37 // No supplied tag, so use "latest". 38 return "latest", nil 39 } 40 41 // imageName already has a tag 42 return "", nil 43 }