110 lines
3.2 KiB
Go
110 lines
3.2 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors All rights reserved.
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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 update
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import (
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"context"
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"fmt"
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"strings"
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"golang.org/x/mod/semver"
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"github.com/google/go-github/v69/github"
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)
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const (
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// ghListPerPage uses max value (100) for PerPage to avoid hitting the rate limits.
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// (ref: https://pkg.go.dev/github.com/google/go-github/github#hdr-Rate_Limiting)
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ghListPerPage = 100
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// ghSearchLimit limits the number of searched items to be <= N * ghListPerPage.
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ghSearchLimit = 300
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)
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type Release struct {
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Tag string
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Commit string
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}
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// GHReleases returns greatest current stable release and greatest latest rc or beta pre-release from GitHub owner/repo repository, and any error occurred.
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// If latest pre-release version is lower than the current stable release, then it will return current stable release for both.
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func GHReleases(ctx context.Context, owner, repo string) (stable, latest, edge Release, err error) {
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ghc := github.NewClient(nil)
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// walk through the paginated list of up to ghSearchLimit newest releases
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opts := &github.ListOptions{PerPage: ghListPerPage}
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for (opts.Page+1)*ghListPerPage <= ghSearchLimit {
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rls, resp, err := ghc.Repositories.ListTags(ctx, owner, repo, opts)
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if err != nil {
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return stable, latest, edge, err
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}
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for _, rl := range rls {
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ver := rl.GetName()
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commit := rl.GetCommit().GetSHA()
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if !semver.IsValid(ver) {
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ver = fmt.Sprintf("v%s", ver)
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if !semver.IsValid(ver) {
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continue
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}
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}
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// check if ver version is release (ie, 'v1.19.2') or pre-release (ie, 'v1.19.3-rc.0' or 'v1.19.0-beta.2')
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prerls := semver.Prerelease(ver)
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if prerls == "" {
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if semver.Compare(ver, stable.Tag) == 1 {
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stable.Tag = ver
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stable.Commit = commit
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}
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} else if strings.HasPrefix(prerls, "-rc") || strings.HasPrefix(prerls, "-beta") {
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if semver.Compare(ver, latest.Tag) == 1 {
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latest.Tag = ver
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latest.Commit = commit
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}
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} else if strings.Contains(prerls, "-alpha") {
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if semver.Compare(ver, edge.Tag) == 1 {
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edge.Tag = ver
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edge.Commit = commit
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}
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}
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// make sure that latest >= stable
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if semver.Compare(latest.Tag, stable.Tag) == -1 {
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latest.Tag = stable.Tag
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latest.Commit = stable.Commit
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}
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// make sure that edge >= latest
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if semver.Compare(edge.Tag, latest.Tag) == -1 {
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edge.Tag = latest.Tag
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edge.Commit = latest.Commit
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}
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}
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if resp.NextPage == 0 {
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break
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}
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opts.Page = resp.NextPage
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}
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return stable, latest, edge, nil
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}
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func StableVersion(ctx context.Context, owner, repo string) (string, error) {
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stable, _, _, err := GHReleases(ctx, owner, repo)
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if err != nil || !semver.IsValid(stable.Tag) {
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return "", err
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}
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return stable.Tag, nil
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}
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