120 lines
3.1 KiB
Go
120 lines
3.1 KiB
Go
package writecache
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import (
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"context"
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"fmt"
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"math"
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"os"
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"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
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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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"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
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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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fstree.WithFileCounter(&c.objCounters),
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)
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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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if err := c.fsTree.Init(); err != nil {
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return fmt.Errorf("could not init 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(key string, batched bool) {
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var recordDeleted bool
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var err error
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if batched {
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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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key := []byte(key)
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recordDeleted = b.Get(key) != nil
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return b.Delete(key)
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})
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} else {
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err = c.db.Update(func(tx *bbolt.Tx) error {
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b := tx.Bucket(defaultBucket)
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key := []byte(key)
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recordDeleted = b.Get(key) != nil
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return b.Delete(key)
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})
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}
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if err == nil {
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c.metrics.Evict(StorageTypeDB)
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storagelog.Write(c.log,
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storagelog.AddressField(key),
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storagelog.StorageTypeField(wcStorageType),
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storagelog.OpField("db DELETE"),
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)
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if recordDeleted {
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c.objCounters.cDB.Add(math.MaxUint64)
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c.estimateCacheSize()
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}
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} else {
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c.log.Error(logs.WritecacheCantRemoveObjectsFromTheDatabase, zap.Error(err))
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}
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}
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func (c *cache) deleteFromDisk(ctx context.Context, addr oid.Address) {
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_, err := c.fsTree.Delete(ctx, common.DeletePrm{Address: addr})
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if err != nil && !client.IsErrObjectNotFound(err) {
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c.log.Error(logs.WritecacheCantRemoveObjectFromWritecache, zap.Error(err))
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} else if err == nil {
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storagelog.Write(c.log,
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storagelog.AddressField(addr.EncodeToString()),
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storagelog.StorageTypeField(wcStorageType),
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storagelog.OpField("fstree DELETE"),
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)
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c.metrics.Evict(StorageTypeFSTree)
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// counter changed by fstree
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c.estimateCacheSize()
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}
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}
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