forked from TrueCloudLab/frostfs-node
91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
package writecachebadger
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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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"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
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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/local_object_storage/writecache"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
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cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
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oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
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"github.com/dgraph-io/badger/v4"
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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 *badger.DB
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}
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type internalKey [len(cid.ID{}) + len(oid.ID{})]byte
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func (k internalKey) address() oid.Address {
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var addr oid.Address
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var cnr cid.ID
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var obj oid.ID
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copy(cnr[:], k[:len(cnr)])
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copy(obj[:], k[len(cnr):])
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addr.SetContainer(cnr)
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addr.SetObject(obj)
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return addr
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}
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func addr2key(addr oid.Address) internalKey {
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var key internalKey
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cnr, obj := addr.Container(), addr.Object()
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copy(key[:len(cnr)], cnr[:])
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copy(key[len(cnr):], obj[:])
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return key
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}
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const dbName = "small.badger"
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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(filepath.Join(c.path, dbName), readOnly, c.log)
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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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return nil
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}
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func (c *cache) deleteFromDB(keys []internalKey) []internalKey {
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if len(keys) == 0 {
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return keys
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}
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wb := c.db.NewWriteBatch()
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var errorIndex int
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for errorIndex = range keys {
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if err := wb.Delete(keys[errorIndex][:]); err != nil {
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break
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}
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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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c.metrics.Evict(writecache.StorageTypeDB)
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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 := wb.Flush(); err != nil {
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c.log.Error(logs.WritecacheCantRemoveObjectsFromTheDatabase, 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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