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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repository
import (
"context"
"fmt"
"time"
"code.gitea.io/gitea/models/db"
git_model "code.gitea.io/gitea/models/git"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/lfs"
"code.gitea.io/gitea/modules/log"
"xorm.io/builder"
)
func GarbageCollectLFSMetaObjects(ctx context.Context, logger log.Logger, autofix bool) error {
log.Trace("Doing: GarbageCollectLFSMetaObjects")
if err := db.Iterate(
ctx,
builder.And(builder.Gt{"id": 0}),
func(ctx context.Context, repo *repo_model.Repository) error {
return GarbageCollectLFSMetaObjectsForRepo(ctx, repo, logger, autofix)
},
); err != nil {
return err
}
log.Trace("Finished: GarbageCollectLFSMetaObjects")
return nil
}
func GarbageCollectLFSMetaObjectsForRepo(ctx context.Context, repo *repo_model.Repository, logger log.Logger, autofix bool) error {
if logger != nil {
logger.Info("Checking %-v", repo)
}
total, orphaned, collected, deleted := 0, 0, 0, 0
if logger != nil {
defer func() {
if orphaned == 0 {
logger.Info("Found %d total LFSMetaObjects in %-v", total, repo)
} else if !autofix {
logger.Info("Found %d/%d orphaned LFSMetaObjects in %-v", orphaned, total, repo)
} else {
logger.Info("Collected %d/%d orphaned/%d total LFSMetaObjects in %-v. %d removed from storage.", collected, orphaned, total, repo, deleted)
}
}()
}
gitRepo, err := git.OpenRepository(ctx, repo.RepoPath())
if err != nil {
log.Error("Unable to open git repository %-v: %v", repo, err)
return err
}
defer gitRepo.Close()
store := lfs.NewContentStore()
return git_model.IterateLFSMetaObjectsForRepo(ctx, repo.ID, func(ctx context.Context, metaObject *git_model.LFSMetaObject, count int64) error {
total++
pointerSha := git.ComputeBlobHash([]byte(metaObject.Pointer.StringContent()))
if gitRepo.IsObjectExist(pointerSha.String()) {
return nil
}
orphaned++
if !autofix {
return nil
}
// Non-existent pointer file
_, err = git_model.RemoveLFSMetaObjectByOidFn(ctx, repo.ID, metaObject.Oid, func(count int64) error {
if count > 0 {
return nil
}
if err := store.Delete(metaObject.RelativePath()); err != nil {
log.Error("Unable to remove lfs metaobject %s from store: %v", metaObject.Oid, err)
}
deleted++
return nil
})
if err != nil {
return fmt.Errorf("unable to remove meta-object %s in %s: %w", metaObject.Oid, repo.FullName(), err)
}
collected++
return nil
}, &git_model.IterateLFSMetaObjectsForRepoOptions{
// Only attempt to garbage collect lfs meta objects older than a week as the order of git lfs upload
// and git object upload is not necessarily guaranteed. It's possible to imagine a situation whereby
// an LFS object is uploaded but the git branch is not uploaded immediately, or there are some rapid
// changes in new branches that might lead to lfs objects becoming temporarily unassociated with git
// objects.
//
// It is likely that a week is potentially excessive but it should definitely be enough that any
// unassociated LFS object is genuinely unassociated.
OlderThan: time.Now().Add(-24 * 7 * time.Hour),
})
}
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