gsh-digital-services/seaweedFS
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add signatures to messages to avoid double processing

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This commit is contained in:
Chris Lu
2020-08-28 23:48:48 -07:00
parent 63ad1abcce
commit ca658a97c5
29 changed files with 331 additions and 214 deletions
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12
weed/server/filer_grpc_server_sub_meta.go
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@@ -24,7 +24,7 @@ func (fs *FilerServer) SubscribeMetadata(req *filer_pb.SubscribeMetadataRequest,
lastReadTime := time.Unix(0, req.SinceNs)
glog.V(0).Infof(" %v starts to subscribe %s from %+v", clientName, req.PathPrefix, lastReadTime)
eachEventNotificationFn := eachEventNotificationFn(req, stream, clientName)
eachEventNotificationFn := eachEventNotificationFn(req, stream, clientName, req.Signature)
eachLogEntryFn := eachLogEntryFn(eachEventNotificationFn)
@@ -59,7 +59,7 @@ func (fs *FilerServer) SubscribeLocalMetadata(req *filer_pb.SubscribeMetadataReq
lastReadTime := time.Unix(0, req.SinceNs)
glog.V(0).Infof(" %v local subscribe %s from %+v", clientName, req.PathPrefix, lastReadTime)
eachEventNotificationFn := eachEventNotificationFn(req, stream, clientName)
eachEventNotificationFn := eachEventNotificationFn(req, stream, clientName, req.Signature)
eachLogEntryFn := eachLogEntryFn(eachEventNotificationFn)
@@ -104,9 +104,15 @@ func eachLogEntryFn(eachEventNotificationFn func(dirPath string, eventNotificati
}
}
func eachEventNotificationFn(req *filer_pb.SubscribeMetadataRequest, stream filer_pb.SeaweedFiler_SubscribeMetadataServer, clientName string) func(dirPath string, eventNotification *filer_pb.EventNotification, tsNs int64) error {
func eachEventNotificationFn(req *filer_pb.SubscribeMetadataRequest, stream filer_pb.SeaweedFiler_SubscribeMetadataServer, clientName string, clientSignature int32) func(dirPath string, eventNotification *filer_pb.EventNotification, tsNs int64) error {
return func(dirPath string, eventNotification *filer_pb.EventNotification, tsNs int64) error {
for _, sig := range eventNotification.Signatures {
if sig == clientSignature && clientSignature != 0 {
return nil
}
}
// get complete path to the file or directory
var entryName string
if eventNotification.OldEntry != nil {