add filer notification

weed/server/filer_grpc_server.go

@@ -173,6 +173,10 @@ func (fs *FilerServer) UpdateEntry(ctx context.Context, req *filer_pb.UpdateEntr
 
 	}
 
+	if filer2.EqualEntry(entry, newEntry) {
+		return &filer_pb.UpdateEntryResponse{}, err
+	}
+
 	if err = fs.filer.UpdateEntry(newEntry); err == nil {
 		for _, garbage := range unusedChunks {
 			glog.V(0).Infof("deleting %s old chunk: %v, [%d, %d)", fullpath, garbage.FileId, garbage.Offset, garbage.Offset+int64(garbage.Size))
@@ -184,6 +188,8 @@ func (fs *FilerServer) UpdateEntry(ctx context.Context, req *filer_pb.UpdateEntr
 		}
 	}
 
+	fs.filer.NotifyUpdateEvent(entry, newEntry)
+
 	return &filer_pb.UpdateEntryResponse{}, err
 }
 

weed/server/filer_server.go

@@ -8,9 +8,12 @@ import (
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/mysql"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/postgres"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/redis"
+	_ "github.com/chrislusf/seaweedfs/weed/msgqueue/kafka"
+	_ "github.com/chrislusf/seaweedfs/weed/msgqueue/log"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"net/http"
+	"github.com/chrislusf/seaweedfs/weed/msgqueue"
 )
 
 type FilerOption struct {
@@ -23,6 +26,7 @@ type FilerOption struct {
 	SecretKey          string
 	DirListingLimit    int
 	DataCenter         string
+	EnableNotification bool
 }
 
 type FilerServer struct {
@@ -46,6 +50,10 @@ func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption)
 
 	fs.filer.LoadConfiguration()
 
+	if fs.option.EnableNotification {
+		msgqueue.LoadConfiguration()
+	}
+
 	defaultMux.HandleFunc("/favicon.ico", faviconHandler)
 	defaultMux.HandleFunc("/", fs.filerHandler)
 	if defaultMux != readonlyMux {