92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package wal
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import (
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"io"
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"io/ioutil"
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"os"
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"testing"
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"github.com/coreos/etcd/raft/raftpb"
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"github.com/coreos/etcd/wal/walpb"
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)
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func TestRepair(t *testing.T) {
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p, err := ioutil.TempDir(os.TempDir(), "waltest")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(p)
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// create WAL
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w, err := Create(p, nil)
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defer w.Close()
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if err != nil {
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t.Fatal(err)
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}
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n := 10
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for i := 1; i <= n; i++ {
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es := []raftpb.Entry{{Index: uint64(i)}}
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if err = w.Save(raftpb.HardState{}, es); err != nil {
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t.Fatal(err)
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}
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}
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w.Close()
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// break the wal.
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f, err := openLast(p)
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if err != nil {
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t.Fatal(err)
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}
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offset, err := f.Seek(-4, os.SEEK_END)
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if err != nil {
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t.Fatal(err)
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}
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err = f.Truncate(offset)
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if err != nil {
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t.Fatal(err)
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}
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// verify we have broke the wal
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w, err = Open(p, walpb.Snapshot{})
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if err != nil {
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t.Fatal(err)
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}
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_, _, _, err = w.ReadAll()
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if err != io.ErrUnexpectedEOF {
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t.Fatalf("err = %v, want %v", err, io.ErrUnexpectedEOF)
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}
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w.Close()
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// repair the wal
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ok := Repair(p)
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if !ok {
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t.Fatalf("fix = %t, want %t", ok, true)
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}
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w, err = Open(p, walpb.Snapshot{})
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if err != nil {
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t.Fatal(err)
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}
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_, _, ents, err := w.ReadAll()
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if err != nil {
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t.Fatalf("err = %v, want %v", err, nil)
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}
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if len(ents) != n-1 {
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t.Fatalf("len(ents) = %d, want %d", len(ents), n-1)
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}
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}
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