Exemple #1
0
func (s *FileStore) storeLog(l *Log) error {
	err := s.w.StoreLog(l)
	if err == nil {
		return nil
	} else if err != errTableNeedFlush {
		return err
	}

	var r *tableReader
	r, err = s.w.Flush()

	if err != nil {
		log.Fatalf("write table flush error %s, can not store!!!", err.Error())

		s.w.Close()

		return err
	}

	s.rm.Lock()
	s.rs = append(s.rs, r)
	s.rm.Unlock()

	err = s.w.StoreLog(l)

	return err
}
Exemple #2
0
func (t *tableWriter) close() {
	if t.meta != nil {
		if err := t.meta.Close(); err != nil {
			log.Fatalf("close log meta error %s", err.Error())
		}
		t.meta = nil
	}

	if t.data != nil {
		if _, err := t.data.Write(magic); err != nil {
			log.Fatalf("write magic error %s", err.Error())
		}

		if err := t.data.Close(); err != nil {
			log.Fatalf("close log data error %s", err.Error())
		}
		t.data = nil
	}
}
Exemple #3
0
func (l *Ledis) handleCommit(g commitDataGetter, c commiter) error {
	l.commitLock.Lock()

	var err error
	if l.r != nil {
		var rl *rpl.Log
		if rl, err = l.r.Log(g.Data()); err != nil {
			l.commitLock.Unlock()

			log.Fatalf("write wal error %s", err.Error())
			return err
		}

		l.propagate(rl)

		if err = c.Commit(); err != nil {
			l.commitLock.Unlock()

			log.Fatalf("commit error %s", err.Error())
			l.noticeReplication()
			return err
		}

		if err = l.r.UpdateCommitID(rl.ID); err != nil {
			l.commitLock.Unlock()

			log.Fatalf("update commit id error %s", err.Error())
			l.noticeReplication()
			return err
		}
	} else {
		err = c.Commit()
	}

	l.commitLock.Unlock()

	return err
}
Exemple #4
0
func (l *Ledis) flushAll() error {
	it := l.ldb.NewIterator()
	defer it.Close()

	it.SeekToFirst()

	w := l.ldb.NewWriteBatch()
	defer w.Rollback()

	n := 0
	for ; it.Valid(); it.Next() {
		n++
		if n == 10000 {
			if err := w.Commit(); err != nil {
				log.Fatalf("flush all commit error: %s", err.Error())
				return err
			}
			n = 0
		}
		w.Delete(it.RawKey())
	}

	if err := w.Commit(); err != nil {
		log.Fatalf("flush all commit error: %s", err.Error())
		return err
	}

	if l.r != nil {
		if err := l.r.Clear(); err != nil {
			log.Fatalf("flush all replication clear error: %s", err.Error())
			return err
		}
	}

	return nil
}
Exemple #5
0
func (db *DB) lSetMeta(ek []byte, headSeq int32, tailSeq int32) int32 {
	t := db.listBatch

	var size int32 = tailSeq - headSeq + 1
	if size < 0 {
		//	todo : log error + panic
		log.Fatalf("invalid meta sequence range [%d, %d]", headSeq, tailSeq)
	} else if size == 0 {
		t.Delete(ek)
	} else {
		buf := make([]byte, 8)

		binary.LittleEndian.PutUint32(buf[0:4], uint32(headSeq))
		binary.LittleEndian.PutUint32(buf[4:8], uint32(tailSeq))

		t.Put(ek, buf)
	}

	return size
}