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cuisongliu
146fac739f
* refactor(master): add store to interface * default add buildah vendor * add buildah * refactor(master): golint * refactor(master): golint
90 lines
2.3 KiB
Go
90 lines
2.3 KiB
Go
// Copyright © 2021 sealos.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package registry
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import (
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"fmt"
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"strings"
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)
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//this package contains some utils to handle docker image name
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const (
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legacyDefaultDomain = "index.docker.io"
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defaultDomain = "docker.io"
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officialRepoName = "library"
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defaultTag = "latest"
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)
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// docker image name struct
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type Named struct {
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domain string //eg. docker.io
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repo string //eg. library/ubuntu
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tag string //eg. latest
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}
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func (n Named) FullName() string {
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return n.domain + "/" + n.repo + ":" + n.tag
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}
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func (n Named) Domain() string {
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return n.domain
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}
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func (n Named) Repo() string {
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return n.repo
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}
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func (n Named) Tag() string {
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return n.tag
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}
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func splitDockerDomain(name string) (domain, remainder string) {
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i := strings.IndexRune(name, '/')
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if i == -1 || (!strings.ContainsAny(name[:i], ".:") && name[:i] != "localhost" && strings.ToLower(name[:i]) == name[:i]) {
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domain, remainder = defaultDomain, name
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} else {
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domain, remainder = name[:i], name[i+1:]
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}
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if domain == legacyDefaultDomain {
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domain = defaultDomain
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}
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if domain == defaultDomain && !strings.ContainsRune(remainder, '/') {
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remainder = officialRepoName + "/" + remainder
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}
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return
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}
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func ParseNormalizedNamed(s string) (Named, error) {
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domain, remainder := splitDockerDomain(s)
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var remoteName, tag string
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if tagSep := strings.IndexRune(remainder, ':'); tagSep > -1 {
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tag = remainder[tagSep+1:]
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remoteName = remainder[:tagSep]
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} else {
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tag = defaultTag
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remoteName = remainder
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}
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if strings.ToLower(remoteName) != remoteName {
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return Named{}, fmt.Errorf("invalid reference format: repository name (%s) must be lowercase", remoteName)
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}
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named := Named{
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domain: domain,
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repo: remoteName,
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tag: tag,
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}
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return named, nil
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}
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