本文整理匯總了Golang中github.com/coreos/etcd/snap/snappb.Snapshot類的典型用法代碼示例。如果您正苦於以下問題：Golang Snapshot類的具體用法？Golang Snapshot怎麽用？Golang Snapshot使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了Snapshot類的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: save
func (s *Snapshotter) save(snapshot *raftpb.Snapshot) error {
start := time.Now()
fname := fmt.Sprintf("%016x-%016x%s", snapshot.Metadata.Term, snapshot.Metadata.Index, snapSuffix)
b := pbutil.MustMarshal(snapshot)
crc := crc32.Update(0, crcTable, b)
snap := snappb.Snapshot{Crc: crc, Data: b}
d, err := snap.Marshal()
if err != nil {
return err
} else {
marshallingDurations.Observe(float64(time.Since(start)) / float64(time.Second))
}
err = pioutil.WriteAndSyncFile(path.Join(s.dir, fname), d, 0666)
if err == nil {
saveDurations.Observe(float64(time.Since(start)) / float64(time.Second))
} else {
err1 := os.Remove(path.Join(s.dir, fname))
if err1 != nil {
plog.Errorf("failed to remove broken snapshot file %s", path.Join(s.dir, fname))
}
}
return err
}示例2: Read
// Read reads the snapshot named by snapname and returns the snapshot.
func Read(snapname string) (*raftpb.Snapshot, error) {
b, err := ioutil.ReadFile(snapname)
if err != nil {
log.Printf("snap: snapshotter cannot read file %v: %v", snapname, err)
return nil, err
}
var serializedSnap snappb.Snapshot
if err = serializedSnap.Unmarshal(b); err != nil {
log.Printf("snap: corrupted snapshot file %v: %v", snapname, err)
return nil, err
}
if len(serializedSnap.Data) == 0 || serializedSnap.Crc == 0 {
log.Printf("snap: unexpected empty snapshot")
return nil, ErrEmptySnapshot
}
crc := crc32.Update(0, crcTable, serializedSnap.Data)
if crc != serializedSnap.Crc {
log.Printf("snap: corrupted snapshot file %v: crc mismatch", snapname)
return nil, ErrCRCMismatch
}
var snap raftpb.Snapshot
if err = snap.Unmarshal(serializedSnap.Data); err != nil {
log.Printf("snap: corrupted snapshot file %v: %v", snapname, err)
return nil, err
}
return &snap, nil
}示例3: save
func (s *Snapshotter) save(snapshot *raftpb.Snapshot) error {
fname := fmt.Sprintf("%016x-%016x%s", snapshot.Metadata.Term, snapshot.Metadata.Index, snapSuffix)
b := pbutil.MustMarshal(snapshot)
crc := crc32.Update(0, crcTable, b)
snap := snappb.Snapshot{Crc: crc, Data: b}
d, err := snap.Marshal()
if err != nil {
return err
}
return ioutil.WriteFile(path.Join(s.dir, fname), d, 0666)
}示例4: save
func (s *Snapshotter) save(snapshot *raftpb.Snapshot) error {
start := time.Now()
fname := fmt.Sprintf("%016x-%016x%s", snapshot.Metadata.Term, snapshot.Metadata.Index, snapSuffix)
b := pbutil.MustMarshal(snapshot)
crc := crc32.Update(0, crcTable, b)
snap := snappb.Snapshot{Crc: crc, Data: b}
d, err := snap.Marshal()
if err != nil {
return err
}
err = ioutil.WriteFile(path.Join(s.dir, fname), d, 0666)
if err == nil {
saveDurations.Observe(float64(time.Since(start).Nanoseconds() / int64(time.Microsecond)))
}
return err
}示例5: loadSnap
func loadSnap(dir, name string) (*raftpb.Snapshot, error) {
var err error
var b []byte
fpath := path.Join(dir, name)
defer func() {
if err != nil {
renameBroken(fpath)
}
}()
b, err = ioutil.ReadFile(fpath)
if err != nil {
log.Printf("snap: snapshotter cannot read file %v: %v", name, err)
return nil, err
}
var serializedSnap snappb.Snapshot
if err = serializedSnap.Unmarshal(b); err != nil {
log.Printf("snap: corrupted snapshot file %v: %v", name, err)
return nil, err
}
if len(serializedSnap.Data) == 0 || serializedSnap.Crc == 0 {
log.Printf("snap: unexpected empty snapshot")
return nil, ErrEmptySnapshot
}
crc := crc32.Update(0, crcTable, serializedSnap.Data)
if crc != serializedSnap.Crc {
log.Printf("snap: corrupted snapshot file %v: crc mismatch", name)
return nil, ErrCRCMismatch
}
var snap raftpb.Snapshot
if err = snap.Unmarshal(serializedSnap.Data); err != nil {
log.Printf("snap: corrupted snapshot file %v: %v", name, err)
return nil, err
}
return &snap, nil
}