kubernetes parsers 源码
kubernetes parsers 代码
文件路径：/pkg/util/parsers/parsers.go
/*
Copyright 2015 The Kubernetes 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 parsers
import (
"fmt"
// Import the crypto sha256 algorithm for the docker image parser to work
_ "crypto/sha256"
// Import the crypto/sha512 algorithm for the docker image parser to work with 384 and 512 sha hashes
_ "crypto/sha512"
dockerref "github.com/docker/distribution/reference"
)
// ParseImageName parses a docker image string into three parts: repo, tag and digest.
// If both tag and digest are empty, a default image tag will be returned.
func ParseImageName(image string) (string, string, string, error) {
named, err := dockerref.ParseNormalizedNamed(image)
if err != nil {
return "", "", "", fmt.Errorf("couldn't parse image name: %v", err)
}
repoToPull := named.Name()
var tag, digest string
tagged, ok := named.(dockerref.Tagged)
if ok {
tag = tagged.Tag()
}
digested, ok := named.(dockerref.Digested)
if ok {
digest = digested.Digest().String()
}
// If no tag was specified, use the default "latest".
if len(tag) == 0 && len(digest) == 0 {
tag = "latest"
}
return repoToPull, tag, digest, nil
}
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