mirror of
https://github.com/go-gitea/gitea
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One of the biggest reasons for slow repository browsing is that we wait until last commit information has been generated for all files in the repository. This PR proposes deferring this generation to a new POST endpoint that does the look up outside of the main page request. Signed-off-by: Andrew Thornton <art27@cantab.net>
172 lines
4.5 KiB
Go
172 lines
4.5 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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//go:build !gogit
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// +build !gogit
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package git
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import (
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"context"
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"fmt"
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"io"
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"path"
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"sort"
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"code.gitea.io/gitea/modules/log"
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)
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// GetCommitsInfo gets information of all commits that are corresponding to these entries
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func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath string, cache *LastCommitCache) ([]CommitInfo, *Commit, error) {
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entryPaths := make([]string, len(tes)+1)
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// Get the commit for the treePath itself
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entryPaths[0] = ""
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for i, entry := range tes {
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entryPaths[i+1] = entry.Name()
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}
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var err error
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var revs map[string]*Commit
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if cache != nil {
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var unHitPaths []string
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revs, unHitPaths, err = getLastCommitForPathsByCache(ctx, commit.ID.String(), treePath, entryPaths, cache)
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if err != nil {
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return nil, nil, err
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}
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if len(unHitPaths) > 0 {
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sort.Strings(unHitPaths)
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commits, err := GetLastCommitForPaths(ctx, cache, commit, treePath, unHitPaths)
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if err != nil {
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return nil, nil, err
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}
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for pth, found := range commits {
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revs[pth] = found
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}
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}
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} else {
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sort.Strings(entryPaths)
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revs, err = GetLastCommitForPaths(ctx, nil, commit, treePath, entryPaths)
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}
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if err != nil {
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return nil, nil, err
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}
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commitsInfo := make([]CommitInfo, len(tes))
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for i, entry := range tes {
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commitsInfo[i] = CommitInfo{
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Entry: entry,
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}
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// Check if we have found a commit for this entry in time
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if entryCommit, ok := revs[entry.Name()]; ok {
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commitsInfo[i].Commit = entryCommit
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} else {
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log.Debug("missing commit for %s", entry.Name())
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}
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// If the entry if a submodule add a submodule file for this
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if entry.IsSubModule() {
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subModuleURL := ""
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var fullPath string
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if len(treePath) > 0 {
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fullPath = treePath + "/" + entry.Name()
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} else {
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fullPath = entry.Name()
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}
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if subModule, err := commit.GetSubModule(fullPath); err != nil {
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return nil, nil, err
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} else if subModule != nil {
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subModuleURL = subModule.URL
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}
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subModuleFile := NewSubModuleFile(commitsInfo[i].Commit, subModuleURL, entry.ID.String())
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commitsInfo[i].SubModuleFile = subModuleFile
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}
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}
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// Retrieve the commit for the treePath itself (see above). We basically
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// get it for free during the tree traversal and it's used for listing
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// pages to display information about newest commit for a given path.
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var treeCommit *Commit
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var ok bool
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if treePath == "" {
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treeCommit = commit
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} else if treeCommit, ok = revs[""]; ok {
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treeCommit.repo = commit.repo
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}
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return commitsInfo, treeCommit, nil
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}
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func getLastCommitForPathsByCache(ctx context.Context, commitID, treePath string, paths []string, cache *LastCommitCache) (map[string]*Commit, []string, error) {
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wr, rd, cancel := cache.repo.CatFileBatch()
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defer cancel()
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var unHitEntryPaths []string
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var results = make(map[string]*Commit)
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for _, p := range paths {
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lastCommit, err := cache.Get(commitID, path.Join(treePath, p), wr, rd)
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if err != nil {
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return nil, nil, err
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}
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if lastCommit != nil {
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results[p] = lastCommit.(*Commit)
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continue
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}
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unHitEntryPaths = append(unHitEntryPaths, p)
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}
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return results, unHitEntryPaths, nil
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}
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// GetLastCommitForPaths returns last commit information
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func GetLastCommitForPaths(ctx context.Context, cache *LastCommitCache, commit *Commit, treePath string, paths []string) (map[string]*Commit, error) {
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// We read backwards from the commit to obtain all of the commits
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revs, err := WalkGitLog(ctx, cache, commit.repo, commit, treePath, paths...)
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if err != nil {
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return nil, err
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}
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batchStdinWriter, batchReader, cancel := commit.repo.CatFileBatch()
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defer cancel()
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commitsMap := map[string]*Commit{}
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commitsMap[commit.ID.String()] = commit
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commitCommits := map[string]*Commit{}
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for path, commitID := range revs {
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c, ok := commitsMap[commitID]
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if ok {
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commitCommits[path] = c
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continue
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}
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if len(commitID) == 0 {
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continue
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}
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_, err := batchStdinWriter.Write([]byte(commitID + "\n"))
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if err != nil {
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return nil, err
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}
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_, typ, size, err := ReadBatchLine(batchReader)
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if err != nil {
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return nil, err
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}
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if typ != "commit" {
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return nil, fmt.Errorf("unexpected type: %s for commit id: %s", typ, commitID)
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}
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c, err = CommitFromReader(commit.repo, MustIDFromString(string(commitID)), io.LimitReader(batchReader, int64(size)))
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if err != nil {
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return nil, err
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}
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if _, err := batchReader.Discard(1); err != nil {
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return nil, err
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}
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commitCommits[path] = c
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}
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return commitCommits, nil
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}
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