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
}
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
}
}
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
}
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
}
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
}