package writecache import ( "context" "fmt" "math" "os" "git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree" storagelog "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/log" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util" "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client" oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id" "go.etcd.io/bbolt" "go.uber.org/zap" ) // store represents persistent storage with in-memory LRU cache // for flushed items on top of it. type store struct { db *bbolt.DB } const dbName = "small.bolt" func (c *cache) openStore(readOnly bool) error { err := util.MkdirAllX(c.path, os.ModePerm) if err != nil { return err } c.db, err = OpenDB(c.path, readOnly, c.openFile) if err != nil { return fmt.Errorf("could not open database: %w", err) } c.db.MaxBatchSize = c.maxBatchSize c.db.MaxBatchDelay = c.maxBatchDelay if !readOnly { err = c.db.Update(func(tx *bbolt.Tx) error { _, err := tx.CreateBucketIfNotExists(defaultBucket) return err }) if err != nil { return fmt.Errorf("could not create default bucket: %w", err) } } c.fsTree = fstree.New( fstree.WithPath(c.path), fstree.WithPerm(os.ModePerm), fstree.WithDepth(1), fstree.WithDirNameLen(1), fstree.WithNoSync(c.noSync), fstree.WithFileCounter(&c.objCounters), ) if err := c.fsTree.Open(readOnly); err != nil { return fmt.Errorf("could not open FSTree: %w", err) } if err := c.fsTree.Init(); err != nil { return fmt.Errorf("could not init FSTree: %w", err) } return nil } func (c *cache) deleteFromDB(key string) { var recordDeleted bool err := c.db.Batch(func(tx *bbolt.Tx) error { b := tx.Bucket(defaultBucket) key := []byte(key) recordDeleted = b.Get(key) != nil return b.Delete(key) }) if err == nil { c.metrics.Evict(StorageTypeDB) storagelog.Write(c.log, storagelog.AddressField(key), storagelog.StorageTypeField(wcStorageType), storagelog.OpField("db DELETE"), ) if recordDeleted { c.objCounters.cDB.Add(math.MaxUint64) c.estimateCacheSize() } } else { c.log.Error(logs.WritecacheCantRemoveObjectsFromTheDatabase, zap.Error(err)) } } func (c *cache) deleteFromDisk(ctx context.Context, addr oid.Address) { _, err := c.fsTree.Delete(ctx, common.DeletePrm{Address: addr}) if err != nil && !client.IsErrObjectNotFound(err) { c.log.Error(logs.WritecacheCantRemoveObjectFromWritecache, zap.Error(err)) } else if err == nil { storagelog.Write(c.log, storagelog.AddressField(addr.EncodeToString()), storagelog.StorageTypeField(wcStorageType), storagelog.OpField("fstree DELETE"), ) c.metrics.Evict(StorageTypeFSTree) // counter changed by fstree c.estimateCacheSize() } }