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wal: add first level logging

release-2.0
Yicheng Qin 2014-08-03 09:51:10 -07:00
parent 969b529b08
commit 2d870fa65b
1 changed files with 9 additions and 0 deletions
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9
wal/wal.go
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@ -22,6 +22,7 @@ import (
"encoding/binary"
"fmt"
"io"
"log"
"os"
"github.com/coreos/etcd/raft"
@ -44,6 +45,7 @@ func newWAL(f *os.File) *WAL {
}
func New(path string) (*WAL, error) {
log.Printf("path=%s wal.new", path)
f, err := os.Open(path)
if err == nil {
f.Close()
@ -57,6 +59,7 @@ func New(path string) (*WAL, error) {
}
func Open(path string) (*WAL, error) {
log.Printf("path=%s wal.open", path)
f, err := os.OpenFile(path, os.O_RDWR, 0)
if err != nil {
return nil, err
@ -65,6 +68,7 @@ func Open(path string) (*WAL, error) {
}
func (w *WAL) Sync() error {
log.Printf("path=%s wal.sync", w.f.Name())
if err := w.bw.Flush(); err != nil {
return err
}
@ -72,6 +76,7 @@ func (w *WAL) Sync() error {
}
func (w *WAL) Close() {
log.Printf("path=%s wal.close", w.f.Name())
if w.f != nil {
w.Sync()
w.f.Close()
@ -79,6 +84,7 @@ func (w *WAL) Close() {
}
func (w *WAL) SaveInfo(id int64) error {
log.Printf("path=%s wal.saveInfo id=%d", w.f.Name(), id)
if err := w.checkAtHead(); err != nil {
return err
}
@ -91,6 +97,7 @@ func (w *WAL) SaveInfo(id int64) error {
}
func (w *WAL) SaveEntry(e *raft.Entry) error {
log.Printf("path=%s wal.saveEntry ent=\"%+v\"", w.f.Name(), e)
b, err := e.Marshal()
if err != nil {
panic(err)
@ -99,6 +106,7 @@ func (w *WAL) SaveEntry(e *raft.Entry) error {
}
func (w *WAL) SaveState(s *raft.State) error {
log.Printf("path=%s wal.saveState state=\"%+v\"", w.f.Name(), s)
w.buf.Reset()
err := binary.Write(w.buf, binary.LittleEndian, s)
if err != nil {
@ -125,6 +133,7 @@ type Node struct {
}
func (w *WAL) LoadNode() (*Node, error) {
log.Printf("path=%s wal.loadNode", w.f.Name())
if err := w.checkAtHead(); err != nil {
return nil, err
}