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filer: setOrLoadFilerStoreSignature

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This commit is contained in:
Chris Lu 2020-09-05 14:08:59 -07:00
parent ca5d8e0d45
commit 71b0e256c7
1 changed files with 22 additions and 1 deletions
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23
weed/filer/filer.go
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@ -19,6 +19,7 @@ import (
const (
LogFlushInterval = time.Minute
PaginationSize = 1024 * 256
FilerStoreId = "filer.store.id"
)
var (
@ -48,7 +49,6 @@ func NewFiler(masters []string, grpcDialOption grpc.DialOption,
MasterClient: wdclient.NewMasterClient(grpcDialOption, "filer", filerHost, filerGrpcPort, masters),
fileIdDeletionQueue: util.NewUnboundedQueue(),
GrpcDialOption: grpcDialOption,
Signature: util.RandomInt32(),
}
f.LocalMetaLogBuffer = log_buffer.NewLogBuffer(LogFlushInterval, f.logFlushFunc, notifyFn)
f.metaLogCollection = collection
@ -72,6 +72,27 @@ func (f *Filer) AggregateFromPeers(self string, filers []string) {
func (f *Filer) SetStore(store FilerStore) {
f.Store = NewFilerStoreWrapper(store)
f.setOrLoadFilerStoreSignature(store)
}
func (f *Filer) setOrLoadFilerStoreSignature(store FilerStore) {
storeIdBytes, err := store.KvGet(context.Background(), []byte(FilerStoreId))
if err == ErrKvNotFound || err == nil && len(storeIdBytes) == 0 {
f.Signature = util.RandomInt32()
storeIdBytes = make([]byte, 4)
util.Uint32toBytes(storeIdBytes, uint32(f.Signature))
if err = store.KvPut(context.Background(), []byte(FilerStoreId), storeIdBytes); err != nil {
glog.Fatalf("set %s=%d : %v", FilerStoreId, f.Signature, err)
}
glog.V(0).Infof("create %s to %d", FilerStoreId, f.Signature)
} else if err == nil && len(storeIdBytes) == 4 {
f.Signature = int32(util.BytesToUint32(storeIdBytes))
glog.V(0).Infof("existing %s = %d", FilerStoreId, f.Signature)
} else {
glog.Fatalf("read %v=%v : %v", FilerStoreId, string(storeIdBytes), err)
}
}
func (f *Filer) GetStore() (store FilerStore) {