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Slightly simplify LastCommitCache (#20444)

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The LastCommitCache code is a little complex and there is unnecessary
duplication between the gogit and nogogit variants.

This PR adds the LastCommitCache as a field to the git.Repository and
pre-creates it in the ReferencesGit helpers etc. There has been some
simplification and unification of the variant code.

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2022-07-25 16:39:42 +01:00 • committed by GitHub
parent 690272d2e2
commit a2cfcdb91a
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 177 additions and 182 deletions
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21
modules/git/commit_info_nogogit.go
View file

@ -17,7 +17,7 @@ import (
)
// GetCommitsInfo gets information of all commits that are corresponding to these entries
func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath string, cache *LastCommitCache) ([]CommitInfo, *Commit, error) {
func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath string) ([]CommitInfo, *Commit, error) {
entryPaths := make([]string, len(tes)+1)
// Get the commit for the treePath itself
entryPaths[0] = ""
@ -28,15 +28,15 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath
var err error
var revs map[string]*Commit
if cache != nil {
if commit.repo.LastCommitCache != nil {
var unHitPaths []string
revs, unHitPaths, err = getLastCommitForPathsByCache(ctx, commit.ID.String(), treePath, entryPaths, cache)
revs, unHitPaths, err = getLastCommitForPathsByCache(ctx, commit.ID.String(), treePath, entryPaths, commit.repo.LastCommitCache)
if err != nil {
return nil, nil, err
}
if len(unHitPaths) > 0 {
sort.Strings(unHitPaths)
commits, err := GetLastCommitForPaths(ctx, cache, commit, treePath, unHitPaths)
commits, err := GetLastCommitForPaths(ctx, commit, treePath, unHitPaths)
if err != nil {
return nil, nil, err
}
@ -47,7 +47,7 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath
}
} else {
sort.Strings(entryPaths)
revs, err = GetLastCommitForPaths(ctx, nil, commit, treePath, entryPaths)
revs, err = GetLastCommitForPaths(ctx, commit, treePath, entryPaths)
}
if err != nil {
return nil, nil, err
@ -99,18 +99,15 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, commit *Commit, treePath
}
func getLastCommitForPathsByCache(ctx context.Context, commitID, treePath string, paths []string, cache *LastCommitCache) (map[string]*Commit, []string, error) {
wr, rd, cancel := cache.repo.CatFileBatch(ctx)
defer cancel()
var unHitEntryPaths []string
results := make(map[string]*Commit)
for _, p := range paths {
lastCommit, err := cache.Get(commitID, path.Join(treePath, p), wr, rd)
lastCommit, err := cache.Get(commitID, path.Join(treePath, p))
if err != nil {
return nil, nil, err
}
if lastCommit != nil {
results[p] = lastCommit.(*Commit)
results[p] = lastCommit
continue
}
@ -121,9 +118,9 @@ func getLastCommitForPathsByCache(ctx context.Context, commitID, treePath string
}
// GetLastCommitForPaths returns last commit information
func GetLastCommitForPaths(ctx context.Context, cache *LastCommitCache, commit *Commit, treePath string, paths []string) (map[string]*Commit, error) {
func GetLastCommitForPaths(ctx context.Context, commit *Commit, treePath string, paths []string) (map[string]*Commit, error) {
// We read backwards from the commit to obtain all of the commits
revs, err := WalkGitLog(ctx, cache, commit.repo, commit, treePath, paths...)
revs, err := WalkGitLog(ctx, commit.repo, commit, treePath, paths...)
if err != nil {
return nil, err
}