Kyle Isom
562b69e875
GC engine (internal/gc/): Collector.Run() implements the two-phase algorithm — Phase 1 finds unreferenced blobs and deletes DB rows in a single transaction, Phase 2 deletes blob files from storage. Registry-wide mutex blocks concurrent GC runs. Collector.Reconcile() scans filesystem for orphaned files with no DB row (crash recovery). Wired into admin_gc.go: POST /v1/gc now launches the real collector in a goroutine with gc_started/gc_completed audit events. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
44 lines
974 B
Go
44 lines
974 B
Go
package storage
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import (
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"fmt"
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"os"
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"path/filepath"
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)
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// ListBlobDigests scans the layers directory and returns all blob digests
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// found on disk. Used by GC reconciliation to find orphaned files.
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func (s *Store) ListBlobDigests() ([]string, error) {
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sha256Dir := filepath.Join(s.layersPath, "sha256")
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prefixEntries, err := os.ReadDir(sha256Dir)
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if err != nil {
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if os.IsNotExist(err) {
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return nil, nil
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}
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return nil, fmt.Errorf("storage: list prefix dirs: %w", err)
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}
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var digests []string
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for _, prefix := range prefixEntries {
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if !prefix.IsDir() || len(prefix.Name()) != 2 {
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continue
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}
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prefixPath := filepath.Join(sha256Dir, prefix.Name())
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blobEntries, err := os.ReadDir(prefixPath)
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if err != nil {
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continue
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}
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for _, blob := range blobEntries {
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if blob.IsDir() {
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continue
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}
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digest := "sha256:" + blob.Name()
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if validateDigest(digest) == nil {
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digests = append(digests, digest)
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}
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}
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}
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return digests, nil
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}
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