/
storage.go
70 lines (65 loc) · 2.05 KB
/
storage.go
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/*
* Copyright (c) 2019-2021. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package raft
import (
"io"
"go.etcd.io/etcd/etcdserver/etcdserverpb"
"go.etcd.io/etcd/pkg/pbutil"
"go.etcd.io/etcd/pkg/types"
"go.etcd.io/etcd/raft/raftpb"
"go.etcd.io/etcd/wal"
"go.etcd.io/etcd/wal/walpb"
"go.uber.org/zap"
)
func readWAL(lg *zap.Logger, waldir string, snap walpb.Snapshot, unsafeNoFsync bool) (w *wal.WAL, id, cid types.ID, st raftpb.HardState, ents []raftpb.Entry) {
var (
err error
wmetadata []byte
)
repaired := false
for {
if w, err = wal.Open(lg, waldir, snap); err != nil {
lg.Fatal("failed to open WAL", zap.Error(err))
}
//if unsafeNoFsync {
// w.SetUnsafeNoFsync()
//}
if wmetadata, st, ents, err = w.ReadAll(); err != nil {
w.Close()
// we can only repair ErrUnexpectedEOF and we never repair twice.
if repaired || err != io.ErrUnexpectedEOF {
lg.Fatal("failed to read WAL, cannot be repaired", zap.Error(err))
}
if !wal.Repair(lg, waldir) {
lg.Fatal("failed to repair WAL", zap.Error(err))
} else {
lg.Info("repaired WAL", zap.Error(err))
repaired = true
}
continue
}
break
}
var metadata etcdserverpb.Metadata
pbutil.MustUnmarshal(&metadata, wmetadata)
id = types.ID(metadata.NodeID)
cid = types.ID(metadata.ClusterID)
return w, id, cid, st, ents
}