317 lines
8.3 KiB
Go
317 lines
8.3 KiB
Go
// Copyright (c) 2021 The Srpmproc Authors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package srpmproc
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"path/filepath"
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"sort"
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"strings"
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"time"
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"github.com/go-git/go-billy/v5/memfs"
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"github.com/go-git/go-git/v5"
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"github.com/go-git/go-git/v5/config"
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"github.com/go-git/go-git/v5/plumbing"
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"github.com/go-git/go-git/v5/plumbing/object"
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"github.com/go-git/go-git/v5/storage/memory"
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"github.com/rocky-linux/srpmproc/pkg/data"
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)
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type remoteTarget struct {
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remote string
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when time.Time
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}
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type remoteTargetSlice []remoteTarget
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func (p remoteTargetSlice) Len() int {
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return len(p)
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}
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func (p remoteTargetSlice) Less(i, j int) bool {
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return p[i].when.Before(p[j].when)
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}
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func (p remoteTargetSlice) Swap(i, j int) {
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p[i], p[j] = p[j], p[i]
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}
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type GitMode struct{}
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func (g *GitMode) RetrieveSource(pd *data.ProcessData) *data.ModeData {
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repo, err := git.Init(memory.NewStorage(), memfs.New())
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if err != nil {
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log.Fatalf("could not init git Repo: %v", err)
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}
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w, err := repo.Worktree()
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if err != nil {
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log.Fatalf("could not get Worktree: %v", err)
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}
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refspec := config.RefSpec("+refs/heads/*:refs/remotes/*")
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remote, err := repo.CreateRemote(&config.RemoteConfig{
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Name: "upstream",
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URLs: []string{fmt.Sprintf("%s.git", pd.RpmLocation)},
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Fetch: []config.RefSpec{refspec},
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})
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if err != nil {
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log.Fatalf("could not create remote: %v", err)
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}
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err = remote.Fetch(&git.FetchOptions{
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RefSpecs: []config.RefSpec{refspec},
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Tags: git.AllTags,
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Force: true,
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})
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if err != nil {
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log.Fatalf("could not fetch upstream: %v", err)
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}
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var branches remoteTargetSlice
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latestTags := map[string]*remoteTarget{}
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tagAdd := func(tag *object.Tag) error {
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if strings.HasPrefix(tag.Name, fmt.Sprintf("imports/%s%d", pd.ImportBranchPrefix, pd.Version)) {
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refSpec := fmt.Sprintf("refs/tags/%s", tag.Name)
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if tagImportRegex.MatchString(refSpec) {
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match := tagImportRegex.FindStringSubmatch(refSpec)
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exists := latestTags[match[2]]
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if exists != nil && exists.when.After(tag.Tagger.When) {
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return nil
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}
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latestTags[match[2]] = &remoteTarget{
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remote: refSpec,
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when: tag.Tagger.When,
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}
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}
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}
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return nil
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}
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tagIter, err := repo.TagObjects()
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if err != nil {
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log.Fatalf("could not get tag objects: %v", err)
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}
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_ = tagIter.ForEach(tagAdd)
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list, err := remote.List(&git.ListOptions{})
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if err != nil {
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log.Fatalf("could not list upstream: %v", err)
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}
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for _, ref := range list {
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if ref.Hash().IsZero() {
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continue
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}
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commit, err := repo.CommitObject(ref.Hash())
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if err != nil {
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continue
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}
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_ = tagAdd(&object.Tag{
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Name: strings.TrimPrefix(string(ref.Name()), "refs/tags/"),
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Tagger: commit.Committer,
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})
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}
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for _, branch := range latestTags {
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log.Printf("tag: %s", strings.TrimPrefix(branch.remote, "refs/tags/"))
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branches = append(branches, *branch)
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}
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sort.Sort(branches)
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var sortedBranches []string
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for _, branch := range branches {
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sortedBranches = append(sortedBranches, branch.remote)
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}
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return &data.ModeData{
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Repo: repo,
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Worktree: w,
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RpmFile: createPackageFile(filepath.Base(pd.RpmLocation)),
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FileWrites: nil,
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Branches: sortedBranches,
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}
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}
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func (g *GitMode) WriteSource(pd *data.ProcessData, md *data.ModeData) {
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remote, err := md.Repo.Remote("upstream")
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if err != nil {
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log.Fatalf("could not get upstream remote: %v", err)
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}
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var refspec config.RefSpec
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var branchName string
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if strings.HasPrefix(md.TagBranch, "refs/heads") {
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refspec = config.RefSpec(fmt.Sprintf("+%s:%s", md.TagBranch, md.TagBranch))
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branchName = strings.TrimPrefix(md.TagBranch, "refs/heads/")
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} else {
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match := tagImportRegex.FindStringSubmatch(md.TagBranch)
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branchName = match[2]
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refspec = config.RefSpec(fmt.Sprintf("+refs/heads/%s:%s", branchName, md.TagBranch))
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}
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log.Printf("checking out upstream refspec %s", refspec)
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err = remote.Fetch(&git.FetchOptions{
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RemoteName: "upstream",
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RefSpecs: []config.RefSpec{refspec},
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Tags: git.AllTags,
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Force: true,
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})
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if err != nil && err != git.NoErrAlreadyUpToDate {
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log.Fatalf("could not fetch upstream: %v", err)
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}
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err = md.Worktree.Checkout(&git.CheckoutOptions{
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Branch: plumbing.ReferenceName(md.TagBranch),
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Force: true,
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})
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if err != nil {
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log.Fatalf("could not checkout source from git: %v", err)
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}
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_, err = md.Worktree.Add(".")
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if err != nil {
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log.Fatalf("could not add Worktree: %v", err)
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}
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metadataFile, err := md.Worktree.Filesystem.Open(fmt.Sprintf(".%s.metadata", md.RpmFile.Name()))
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if err != nil {
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log.Printf("warn: could not open metadata file, so skipping: %v", err)
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return
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}
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fileBytes, err := ioutil.ReadAll(metadataFile)
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if err != nil {
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log.Fatalf("could not read metadata file: %v", err)
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}
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client := &http.Client{
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Transport: &http.Transport{
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DisableCompression: false,
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},
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}
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fileContent := strings.Split(string(fileBytes), "\n")
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for _, line := range fileContent {
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if strings.TrimSpace(line) == "" {
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continue
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}
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lineInfo := strings.SplitN(line, " ", 2)
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hash := strings.TrimSpace(lineInfo[0])
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path := strings.TrimSpace(lineInfo[1])
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var body []byte
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if md.BlobCache[hash] != nil {
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body = md.BlobCache[hash]
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log.Printf("retrieving %s from cache", hash)
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} else {
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fromBlobStorage := pd.BlobStorage.Read(hash)
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if fromBlobStorage != nil && !pd.NoStorageDownload {
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body = fromBlobStorage
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log.Printf("downloading %s from blob storage", hash)
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} else {
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url := fmt.Sprintf("https://git.centos.org/sources/%s/%s/%s", md.RpmFile.Name(), branchName, hash)
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log.Printf("downloading %s", url)
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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log.Fatalf("could not create new http request: %v", err)
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}
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req.Header.Set("Accept-Encoding", "*")
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resp, err := client.Do(req)
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if err != nil {
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log.Fatalf("could not download dist-git file: %v", err)
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}
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body, err = ioutil.ReadAll(resp.Body)
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if err != nil {
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log.Fatalf("could not read the whole dist-git file: %v", err)
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}
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err = resp.Body.Close()
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if err != nil {
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log.Fatalf("could not close body handle: %v", err)
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}
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}
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md.BlobCache[hash] = body
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}
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f, err := md.Worktree.Filesystem.Create(path)
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if err != nil {
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log.Fatalf("could not open file pointer: %v", err)
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}
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hasher := data.CompareHash(body, hash)
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if hasher == nil {
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log.Fatal("checksum in metadata does not match dist-git file")
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}
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md.SourcesToIgnore = append(md.SourcesToIgnore, &data.IgnoredSource{
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Name: path,
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HashFunction: hasher,
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})
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_, err = f.Write(body)
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if err != nil {
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log.Fatalf("could not copy dist-git file to in-tree: %v", err)
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}
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_ = f.Close()
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}
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}
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func (g *GitMode) PostProcess(md *data.ModeData) {
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for _, source := range md.SourcesToIgnore {
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_, err := md.Worktree.Filesystem.Stat(source.Name)
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if err == nil {
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err := md.Worktree.Filesystem.Remove(source.Name)
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if err != nil {
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log.Fatalf("could not remove dist-git file: %v", err)
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}
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}
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}
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_, err := md.Worktree.Add(".")
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if err != nil {
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log.Fatalf("could not add git sources: %v", err)
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}
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}
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func (g *GitMode) ImportName(_ *data.ProcessData, md *data.ModeData) string {
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if tagImportRegex.MatchString(md.TagBranch) {
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match := tagImportRegex.FindStringSubmatch(md.TagBranch)
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return match[3]
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}
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return strings.Replace(strings.TrimPrefix(md.TagBranch, "refs/heads/"), "%", "_", -1)
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}
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