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// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package wal
import (
"bytes"
"io/ioutil"
"os"
"go.etcd.io/etcd/raft/v3/raftpb"
"go.etcd.io/etcd/server/v3/storage/wal/walpb"
"go.uber.org/zap"
)
func FuzzWalCreate(data []byte) int {
p, err := ioutil.TempDir("/tmp", "waltest")
if err != nil {
return -1
}
defer os.RemoveAll(p)
w, err := Create(zap.NewExample(), p, data)
if err != nil {
return 0
}
if err = w.SaveSnapshot(walpb.Snapshot{}); err != nil {
return 0
}
if err = w.Save(raftpb.HardState{}, []raftpb.Entry{{Index: 0}}); err != nil {
return 0
}
w.Close()
neww, err := Open(zap.NewExample(), p, walpb.Snapshot{})
if err != nil {
return 0
}
defer neww.Close()
metadata, _, _, err := neww.ReadAll()
if err != nil {
return 0
}
if !bytes.Equal(data, metadata) {
panic("data and metadata are not equal, but they should be")
}
return 1
}
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