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Merge pull request '[ENHANCEMENT] Improve caching of contributor stats' (#4367) from gusted/contributors-stats-cache into forgejo

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Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4367
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
This commit is contained in:
Earl Warren 2024-07-06 20:12:35 +00:00
commit bf0c9837cc
3 changed files with 18 additions and 17 deletions
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1
release-notes/9.0.0/4367.md Normal file
View file

@ -0,0 +1 @@
The caching of contributor stats was improved (the data used by `/<user>/<repo>/activity/recent-commits`) to use the configured cache TTL from the config (`[cache].ITEM_TTL`) instead of a hardcoded TTL of ten minutes. The computation of this operation is computationally heavy and makes a lot of requests to the database and Git on repositories with a lot of commits. It should be cached for longer than what was previously hardcoded, ten minutes.

20
services/repository/contributors_graph.go
View file

@ -22,15 +22,13 @@ import (
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
"gitea.com/go-chi/cache"
)
const (
contributorStatsCacheKey = "GetContributorStats/%s/%s"
contributorStatsCacheTimeout int64 = 60 * 10
)
const contributorStatsCacheKey = "GetContributorStats/%s/%s"
var (
ErrAwaitGeneration = errors.New("generation took longer than ")
@ -211,8 +209,7 @@ func generateContributorStats(genDone chan struct{}, cache cache.Cache, cacheKey
gitRepo, closer, err := gitrepo.RepositoryFromContextOrOpen(ctx, repo)
if err != nil {
err := fmt.Errorf("OpenRepository: %w", err)
_ = cache.Put(cacheKey, err, contributorStatsCacheTimeout)
log.Error("OpenRepository[repo=%q]: %v", repo.FullName(), err)
return
}
defer closer.Close()
@ -222,13 +219,11 @@ func generateContributorStats(genDone chan struct{}, cache cache.Cache, cacheKey
}
extendedCommitStats, err := getExtendedCommitStats(gitRepo, revision)
if err != nil {
err := fmt.Errorf("ExtendedCommitStats: %w", err)
_ = cache.Put(cacheKey, err, contributorStatsCacheTimeout)
log.Error("getExtendedCommitStats[repo=%q revision=%q]: %v", repo.FullName(), revision, err)
return
}
if len(extendedCommitStats) == 0 {
err := fmt.Errorf("no commit stats returned for revision '%s'", revision)
_ = cache.Put(cacheKey, err, contributorStatsCacheTimeout)
log.Error("No commit stats were returned [repo=%q revision=%q]", repo.FullName(), revision)
return
}
@ -312,14 +307,13 @@ func generateContributorStats(genDone chan struct{}, cache cache.Cache, cacheKey
data, err := json.Marshal(contributorsCommitStats)
if err != nil {
err := fmt.Errorf("couldn't marshal the data: %w", err)
_ = cache.Put(cacheKey, err, contributorStatsCacheTimeout)
log.Error("json.Marshal[repo=%q revision=%q]: %v", repo.FullName(), revision, err)
return
}
// Store the data as an string, to make it uniform what data type is returned
// from caches.
_ = cache.Put(cacheKey, string(data), contributorStatsCacheTimeout)
_ = cache.Put(cacheKey, string(data), setting.CacheService.TTLSeconds())
generateLock.Delete(cacheKey)
if genDone != nil {
genDone <- struct{}{}

14
services/repository/contributors_graph_test.go
View file

@ -6,12 +6,14 @@ package repository
import (
"slices"
"testing"
"time"
"code.gitea.io/gitea/models/db"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unittest"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/test"
"gitea.com/go-chi/cache"
"github.com/stretchr/testify/assert"
@ -27,10 +29,14 @@ func TestRepository_ContributorsGraph(t *testing.T) {
})
assert.NoError(t, err)
lc, cleanup := test.NewLogChecker(log.DEFAULT, log.INFO)
lc.StopMark(`getExtendedCommitStats[repo="user2/repo2" revision="404ref"]: object does not exist [id: 404ref, rel_path: ]`)
defer cleanup()
generateContributorStats(nil, mockCache, "key", repo, "404ref")
err, isErr := mockCache.Get("key").(error)
assert.True(t, isErr)
assert.ErrorAs(t, err, &git.ErrNotExist{})
assert.False(t, mockCache.IsExist("key"))
_, stopped := lc.Check(100 * time.Millisecond)
assert.True(t, stopped)
generateContributorStats(nil, mockCache, "key2", repo, "master")
dataString, isData := mockCache.Get("key2").(string)