forked from TrueCloudLab/frostfs-node
127 lines
3 KiB
Go
127 lines
3 KiB
Go
package writecache
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import (
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"errors"
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"fmt"
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"os"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
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storagelog "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/log"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
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apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
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oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
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"go.etcd.io/bbolt"
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"go.uber.org/zap"
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)
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// store represents persistent storage with in-memory LRU cache
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// for flushed items on top of it.
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type store struct {
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db *bbolt.DB
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}
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const dbName = "small.bolt"
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func (c *cache) openStore(readOnly bool) error {
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err := util.MkdirAllX(c.path, os.ModePerm)
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if err != nil {
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return err
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}
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c.db, err = OpenDB(c.path, readOnly, c.openFile)
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if err != nil {
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return fmt.Errorf("could not open database: %w", err)
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}
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c.db.MaxBatchSize = c.maxBatchSize
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c.db.MaxBatchDelay = c.maxBatchDelay
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if !readOnly {
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err = c.db.Update(func(tx *bbolt.Tx) error {
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_, err := tx.CreateBucketIfNotExists(defaultBucket)
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return err
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})
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if err != nil {
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return fmt.Errorf("could not create default bucket: %w", err)
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}
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}
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c.fsTree = fstree.New(
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fstree.WithPath(c.path),
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fstree.WithPerm(os.ModePerm),
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fstree.WithDepth(1),
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fstree.WithDirNameLen(1),
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fstree.WithNoSync(c.noSync))
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if err := c.fsTree.Open(readOnly); err != nil {
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return fmt.Errorf("could not open FSTree: %w", err)
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}
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return nil
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}
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func (c *cache) deleteFromDB(keys []string) []string {
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if len(keys) == 0 {
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return keys
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}
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var errorIndex int
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err := c.db.Batch(func(tx *bbolt.Tx) error {
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b := tx.Bucket(defaultBucket)
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for errorIndex = range keys {
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if err := b.Delete([]byte(keys[errorIndex])); err != nil {
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return err
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}
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}
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return nil
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})
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for i := 0; i < errorIndex; i++ {
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c.objCounters.DecDB()
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storagelog.Write(c.log,
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storagelog.AddressField(keys[i]),
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storagelog.StorageTypeField(wcStorageType),
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storagelog.OpField("db DELETE"),
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)
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}
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if err != nil {
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c.log.Error("can't remove objects from the database", zap.Error(err))
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}
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copy(keys, keys[errorIndex:])
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return keys[:len(keys)-errorIndex]
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}
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func (c *cache) deleteFromDisk(keys []string) []string {
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if len(keys) == 0 {
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return keys
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}
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var copyIndex int
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var addr oid.Address
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for i := range keys {
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if err := addr.DecodeString(keys[i]); err != nil {
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c.log.Error("can't parse address", zap.String("address", keys[i]))
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continue
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}
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_, err := c.fsTree.Delete(common.DeletePrm{Address: addr})
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if err != nil && !errors.As(err, new(apistatus.ObjectNotFound)) {
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c.log.Error("can't remove object from write-cache", zap.Error(err))
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// Save the key for the next iteration.
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keys[copyIndex] = keys[i]
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copyIndex++
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continue
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} else if err == nil {
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storagelog.Write(c.log,
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storagelog.AddressField(keys[i]),
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storagelog.StorageTypeField(wcStorageType),
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storagelog.OpField("fstree DELETE"),
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)
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c.objCounters.DecFS()
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}
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}
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return keys[:copyIndex]
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}
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