mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
525 lines
12 KiB
Go
525 lines
12 KiB
Go
// Copyright 2015 CoreOS, Inc.
|
|
//
|
|
// 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"
|
|
"path"
|
|
"reflect"
|
|
"testing"
|
|
|
|
"github.com/coreos/etcd/pkg/pbutil"
|
|
"github.com/coreos/etcd/raft/raftpb"
|
|
"github.com/coreos/etcd/wal/walpb"
|
|
)
|
|
|
|
func TestNew(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
|
|
w, err := Create(p, []byte("somedata"))
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
if g := path.Base(w.f.Name()); g != walName(0, 0) {
|
|
t.Errorf("name = %+v, want %+v", g, walName(0, 0))
|
|
}
|
|
defer w.Close()
|
|
gd, err := ioutil.ReadFile(w.f.Name())
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
|
|
var wb bytes.Buffer
|
|
e := newEncoder(&wb, 0)
|
|
err = e.encode(&walpb.Record{Type: crcType, Crc: 0})
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
err = e.encode(&walpb.Record{Type: metadataType, Data: []byte("somedata")})
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
r := &walpb.Record{
|
|
Type: snapshotType,
|
|
Data: pbutil.MustMarshal(&walpb.Snapshot{}),
|
|
}
|
|
if err = e.encode(r); err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
e.flush()
|
|
if !reflect.DeepEqual(gd, wb.Bytes()) {
|
|
t.Errorf("data = %v, want %v", gd, wb.Bytes())
|
|
}
|
|
}
|
|
|
|
func TestNewForInitedDir(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
|
|
os.Create(path.Join(p, walName(0, 0)))
|
|
if _, err = Create(p, nil); err == nil || err != os.ErrExist {
|
|
t.Errorf("err = %v, want %v", err, os.ErrExist)
|
|
}
|
|
}
|
|
|
|
func TestOpenAtIndex(t *testing.T) {
|
|
dir, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
f, err := os.Create(path.Join(dir, walName(0, 0)))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
f.Close()
|
|
|
|
w, err := Open(dir, walpb.Snapshot{})
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
if g := path.Base(w.f.Name()); g != walName(0, 0) {
|
|
t.Errorf("name = %+v, want %+v", g, walName(0, 0))
|
|
}
|
|
if w.seq != 0 {
|
|
t.Errorf("seq = %d, want %d", w.seq, 0)
|
|
}
|
|
w.Close()
|
|
|
|
wname := walName(2, 10)
|
|
f, err = os.Create(path.Join(dir, wname))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
f.Close()
|
|
|
|
w, err = Open(dir, walpb.Snapshot{Index: 5})
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
if g := path.Base(w.f.Name()); g != wname {
|
|
t.Errorf("name = %+v, want %+v", g, wname)
|
|
}
|
|
if w.seq != 2 {
|
|
t.Errorf("seq = %d, want %d", w.seq, 2)
|
|
}
|
|
w.Close()
|
|
|
|
emptydir, err := ioutil.TempDir(os.TempDir(), "waltestempty")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(emptydir)
|
|
if _, err = Open(emptydir, walpb.Snapshot{}); err != ErrFileNotFound {
|
|
t.Errorf("err = %v, want %v", err, ErrFileNotFound)
|
|
}
|
|
}
|
|
|
|
// TODO: split it into smaller tests for better readability
|
|
func TestCut(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
|
|
w, err := Create(p, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer w.Close()
|
|
|
|
state := raftpb.HardState{Term: 1}
|
|
// TODO(unihorn): remove this when cut can operate on an empty file
|
|
if err := w.Save(state, []raftpb.Entry{{}}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := w.cut(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
wname := walName(1, 1)
|
|
if g := path.Base(w.f.Name()); g != wname {
|
|
t.Errorf("name = %s, want %s", g, wname)
|
|
}
|
|
|
|
es := []raftpb.Entry{{Index: 1, Term: 1, Data: []byte{1}}}
|
|
if err := w.Save(raftpb.HardState{}, es); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := w.cut(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
snap := walpb.Snapshot{Index: 2, Term: 1}
|
|
if err := w.SaveSnapshot(snap); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
wname = walName(2, 2)
|
|
if g := path.Base(w.f.Name()); g != wname {
|
|
t.Errorf("name = %s, want %s", g, wname)
|
|
}
|
|
|
|
// check the state in the last WAL
|
|
// We do check before closing the WAL to ensure that Cut syncs the data
|
|
// into the disk.
|
|
f, err := os.Open(path.Join(p, wname))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
nw := &WAL{
|
|
decoder: newDecoder(f),
|
|
start: snap,
|
|
}
|
|
_, gst, _, err := nw.ReadAll()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !reflect.DeepEqual(gst, state) {
|
|
t.Errorf("state = %+v, want %+v", gst, state)
|
|
}
|
|
}
|
|
|
|
func TestRecover(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
|
|
w, err := Create(p, []byte("metadata"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := w.SaveSnapshot(walpb.Snapshot{}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
ents := []raftpb.Entry{{Index: 1, Term: 1, Data: []byte{1}}, {Index: 2, Term: 2, Data: []byte{2}}}
|
|
if err = w.Save(raftpb.HardState{}, ents); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
sts := []raftpb.HardState{{Term: 1, Vote: 1, Commit: 1}, {Term: 2, Vote: 2, Commit: 2}}
|
|
for _, s := range sts {
|
|
if err = w.Save(s, nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
w.Close()
|
|
|
|
if w, err = Open(p, walpb.Snapshot{}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
metadata, state, entries, err := w.ReadAll()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if !reflect.DeepEqual(metadata, []byte("metadata")) {
|
|
t.Errorf("metadata = %s, want %s", metadata, "metadata")
|
|
}
|
|
if !reflect.DeepEqual(entries, ents) {
|
|
t.Errorf("ents = %+v, want %+v", entries, ents)
|
|
}
|
|
// only the latest state is recorded
|
|
s := sts[len(sts)-1]
|
|
if !reflect.DeepEqual(state, s) {
|
|
t.Errorf("state = %+v, want %+v", state, s)
|
|
}
|
|
w.Close()
|
|
}
|
|
|
|
func TestSearchIndex(t *testing.T) {
|
|
tests := []struct {
|
|
names []string
|
|
index uint64
|
|
widx int
|
|
wok bool
|
|
}{
|
|
{
|
|
[]string{
|
|
"0000000000000000-0000000000000000.wal",
|
|
"0000000000000001-0000000000001000.wal",
|
|
"0000000000000002-0000000000002000.wal",
|
|
},
|
|
0x1000, 1, true,
|
|
},
|
|
{
|
|
[]string{
|
|
"0000000000000001-0000000000004000.wal",
|
|
"0000000000000002-0000000000003000.wal",
|
|
"0000000000000003-0000000000005000.wal",
|
|
},
|
|
0x4000, 1, true,
|
|
},
|
|
{
|
|
[]string{
|
|
"0000000000000001-0000000000002000.wal",
|
|
"0000000000000002-0000000000003000.wal",
|
|
"0000000000000003-0000000000005000.wal",
|
|
},
|
|
0x1000, -1, false,
|
|
},
|
|
}
|
|
for i, tt := range tests {
|
|
idx, ok := searchIndex(tt.names, tt.index)
|
|
if idx != tt.widx {
|
|
t.Errorf("#%d: idx = %d, want %d", i, idx, tt.widx)
|
|
}
|
|
if ok != tt.wok {
|
|
t.Errorf("#%d: ok = %v, want %v", i, ok, tt.wok)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestScanWalName(t *testing.T) {
|
|
tests := []struct {
|
|
str string
|
|
wseq, windex uint64
|
|
wok bool
|
|
}{
|
|
{"0000000000000000-0000000000000000.wal", 0, 0, true},
|
|
{"0000000000000000.wal", 0, 0, false},
|
|
{"0000000000000000-0000000000000000.snap", 0, 0, false},
|
|
}
|
|
for i, tt := range tests {
|
|
s, index, err := parseWalName(tt.str)
|
|
if g := err == nil; g != tt.wok {
|
|
t.Errorf("#%d: ok = %v, want %v", i, g, tt.wok)
|
|
}
|
|
if s != tt.wseq {
|
|
t.Errorf("#%d: seq = %d, want %d", i, s, tt.wseq)
|
|
}
|
|
if index != tt.windex {
|
|
t.Errorf("#%d: index = %d, want %d", i, index, tt.windex)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestRecoverAfterCut(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
|
|
md, err := Create(p, []byte("metadata"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
for i := 0; i < 10; i++ {
|
|
if err = md.SaveSnapshot(walpb.Snapshot{Index: uint64(i)}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
es := []raftpb.Entry{{Index: uint64(i)}}
|
|
if err = md.Save(raftpb.HardState{}, es); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err = md.cut(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
md.Close()
|
|
|
|
if err := os.Remove(path.Join(p, walName(4, 4))); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
for i := 0; i < 10; i++ {
|
|
w, err := Open(p, walpb.Snapshot{Index: uint64(i)})
|
|
if err != nil {
|
|
if i <= 4 {
|
|
if err != ErrFileNotFound {
|
|
t.Errorf("#%d: err = %v, want %v", i, err, ErrFileNotFound)
|
|
}
|
|
} else {
|
|
t.Errorf("#%d: err = %v, want nil", i, err)
|
|
}
|
|
continue
|
|
}
|
|
metadata, _, entries, err := w.ReadAll()
|
|
if err != nil {
|
|
t.Errorf("#%d: err = %v, want nil", i, err)
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(metadata, []byte("metadata")) {
|
|
t.Errorf("#%d: metadata = %s, want %s", i, metadata, "metadata")
|
|
}
|
|
for j, e := range entries {
|
|
if e.Index != uint64(j+i+1) {
|
|
t.Errorf("#%d: ents[%d].Index = %+v, want %+v", i, j, e.Index, j+i+1)
|
|
}
|
|
}
|
|
w.Close()
|
|
}
|
|
}
|
|
|
|
func TestOpenAtUncommittedIndex(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
|
|
w, err := Create(p, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := w.SaveSnapshot(walpb.Snapshot{}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := w.Save(raftpb.HardState{}, []raftpb.Entry{{Index: 0}}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
w.Close()
|
|
|
|
w, err = Open(p, walpb.Snapshot{})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// commit up to index 0, try to read index 1
|
|
if _, _, _, err := w.ReadAll(); err != nil {
|
|
t.Errorf("err = %v, want nil", err)
|
|
}
|
|
w.Close()
|
|
}
|
|
|
|
// TestOpenNotInUse tests that OpenNotInUse can load all files that are
|
|
// not in use at that point.
|
|
// The tests creates WAL directory, and cut out multiple WAL files. Then
|
|
// it releases the lock of part of data, and excepts that OpenNotInUse
|
|
// can read out all unlocked data.
|
|
func TestOpenNotInUse(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
// create WAL
|
|
w, err := Create(p, nil)
|
|
defer w.Close()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// make 10 seperate files
|
|
for i := 0; i < 10; i++ {
|
|
es := []raftpb.Entry{{Index: uint64(i)}}
|
|
if err = w.Save(raftpb.HardState{}, es); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err = w.cut(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
// release the lock to 5
|
|
unlockIndex := uint64(5)
|
|
w.ReleaseLockTo(unlockIndex)
|
|
|
|
// 1,2,3 are avaliable.
|
|
w2, err := OpenNotInUse(p, walpb.Snapshot{})
|
|
defer w2.Close()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
_, _, ents, err := w2.ReadAll()
|
|
if err != nil {
|
|
t.Fatalf("err = %v, want nil", err)
|
|
}
|
|
if g := ents[len(ents)-1].Index; g != unlockIndex-2 {
|
|
t.Errorf("last index read = %d, want %d", g, unlockIndex-2)
|
|
}
|
|
}
|
|
|
|
func TestSaveEmpty(t *testing.T) {
|
|
var buf bytes.Buffer
|
|
var est raftpb.HardState
|
|
w := WAL{
|
|
encoder: newEncoder(&buf, 0),
|
|
}
|
|
if err := w.saveState(&est); err != nil {
|
|
t.Errorf("err = %v, want nil", err)
|
|
}
|
|
if len(buf.Bytes()) != 0 {
|
|
t.Errorf("buf.Bytes = %d, want 0", len(buf.Bytes()))
|
|
}
|
|
}
|
|
|
|
func TestReleaseLockTo(t *testing.T) {
|
|
p, err := ioutil.TempDir(os.TempDir(), "waltest")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(p)
|
|
// create WAL
|
|
w, err := Create(p, nil)
|
|
defer w.Close()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// make 10 seperate files
|
|
for i := 0; i < 10; i++ {
|
|
es := []raftpb.Entry{{Index: uint64(i)}}
|
|
if err = w.Save(raftpb.HardState{}, es); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err = w.cut(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
// release the lock to 5
|
|
unlockIndex := uint64(5)
|
|
w.ReleaseLockTo(unlockIndex)
|
|
|
|
// expected remaining are 4,5,6,7,8,9,10
|
|
if len(w.locks) != 7 {
|
|
t.Errorf("len(w.locks) = %d, want %d", len(w.locks), 7)
|
|
}
|
|
for i, l := range w.locks {
|
|
_, lockIndex, err := parseWalName(path.Base(l.Name()))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if lockIndex != uint64(i+4) {
|
|
t.Errorf("#%d: lockindex = %d, want %d", i, lockIndex, uint64(i+4))
|
|
}
|
|
}
|
|
|
|
// release the lock to 15
|
|
unlockIndex = uint64(15)
|
|
w.ReleaseLockTo(unlockIndex)
|
|
|
|
// expected remaining is 10
|
|
if len(w.locks) != 1 {
|
|
t.Errorf("len(w.locks) = %d, want %d", len(w.locks), 1)
|
|
}
|
|
_, lockIndex, err := parseWalName(path.Base(w.locks[0].Name()))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if lockIndex != uint64(10) {
|
|
t.Errorf("lockindex = %d, want %d", lockIndex, 10)
|
|
}
|
|
}
|