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wal: add walName function; cleanup test

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This commit is contained in:
Xiang Li 2014-09-14 15:45:26 -07:00
parent cec1956b8f
commit 1d09c25f5f
3 changed files with 21 additions and 23 deletions
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4
wal/util.go
View File

@ -83,6 +83,10 @@ func parseWalName(str string) (seq, index int64, err error) {
return
}
func walName(seq, index int64) string {
return fmt.Sprintf("%016x-%016x.wal", seq, index)
}
func max(a, b int64) int64 {
if a > b {
return a

4
wal/wal.go
View File

@ -76,7 +76,7 @@ func Create(dirpath string) (*WAL, error) {
return nil, err
}
p := path.Join(dirpath, fmt.Sprintf("%016x-%016x.wal", 0, 0))
p := path.Join(dirpath, walName(0, 0))
f, err := os.OpenFile(p, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0600)
if err != nil {
return nil, err
@ -207,7 +207,7 @@ func (w *WAL) Cut() error {
log.Printf("wal.cut index=%d", w.enti+1)
// create a new wal file with name sequence + 1
fpath := path.Join(w.dir, fmt.Sprintf("%016x-%016x.wal", w.seq+1, w.enti+1))
fpath := path.Join(w.dir, walName(w.seq+1, w.enti+1))
f, err := os.OpenFile(fpath, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0600)
if err != nil {
return err

36
wal/wal_test.go
View File

@ -18,7 +18,6 @@ package wal
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path"
@ -31,8 +30,6 @@ import (
var (
infoData = []byte("\b\xef\xfd\x02")
infoRecord = append([]byte("\x0e\x00\x00\x00\x00\x00\x00\x00\b\x01\x10\x99\xb5\xe4\xd0\x03\x1a\x04"), infoData...)
firstWalName = "0000000000000000-0000000000000000.wal"
)
func TestNew(t *testing.T) {
@ -46,8 +43,8 @@ func TestNew(t *testing.T) {
if err != nil {
t.Fatalf("err = %v, want nil", err)
}
if g := path.Base(w.f.Name()); g != firstWalName {
t.Errorf("name = %+v, want %+v", g, firstWalName)
if g := path.Base(w.f.Name()); g != walName(0, 0) {
t.Errorf("name = %+v, want %+v", g, walName(0, 0))
}
w.Close()
}
@ -59,7 +56,7 @@ func TestNewForInitedDir(t *testing.T) {
}
defer os.RemoveAll(p)
os.Create(path.Join(p, firstWalName))
os.Create(path.Join(p, walName(0, 0)))
if _, err = Create(p); err == nil || err != os.ErrExist {
t.Errorf("err = %v, want %v", err, os.ErrExist)
}
@ -72,13 +69,7 @@ func TestOpenAtIndex(t *testing.T) {
}
defer os.RemoveAll(dir)
f, err := os.Create(path.Join(dir, firstWalName))
if err != nil {
t.Fatal(err)
}
f.Close()
writef := fmt.Sprintf("%016x-%016x.wal", 1, 4)
f, err = os.Create(path.Join(dir, writef))
f, err := os.Create(path.Join(dir, walName(0, 0)))
if err != nil {
t.Fatal(err)
}
@ -88,15 +79,15 @@ func TestOpenAtIndex(t *testing.T) {
if err != nil {
t.Fatalf("err = %v, want nil", err)
}
if g := path.Base(w.f.Name()); g != writef {
t.Errorf("name = %+v, want %+v", g, writef)
if g := path.Base(w.f.Name()); g != walName(0, 0) {
t.Errorf("name = %+v, want %+v", g, walName(0, 0))
}
if w.seq != 1 {
t.Errorf("seq = %d, want %d", w.seq, 1)
if w.seq != 0 {
t.Errorf("seq = %d, want %d", w.seq, 0)
}
w.Close()
wname := fmt.Sprintf("%016x-%016x.wal", 2, 10)
wname := walName(2, 10)
f, err = os.Create(path.Join(dir, wname))
if err != nil {
t.Fatal(err)
@ -110,6 +101,9 @@ func TestOpenAtIndex(t *testing.T) {
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")
@ -142,7 +136,7 @@ func TestCut(t *testing.T) {
if err := w.Cut(); err != nil {
t.Fatal(err)
}
wname := fmt.Sprintf("%016x-%016x.wal", 1, 1)
wname := walName(1, 1)
if g := path.Base(w.f.Name()); g != wname {
t.Errorf("name = %s, want %s", g, wname)
}
@ -154,7 +148,7 @@ func TestCut(t *testing.T) {
if err := w.Cut(); err != nil {
t.Fatal(err)
}
wname = fmt.Sprintf("%016x-%016x.wal", 2, 2)
wname = walName(2, 2)
if g := path.Base(w.f.Name()); g != wname {
t.Errorf("name = %s, want %s", g, wname)
}
@ -313,7 +307,7 @@ func TestRecoverAfterCut(t *testing.T) {
}
w.Close()
if err := os.Remove(path.Join(p, "0000000000000004-0000000000000004.wal")); err != nil {
if err := os.Remove(path.Join(p, walName(4, 4))); err != nil {
t.Fatal(err)
}