support follow additional path prefixes

4 files changed, 232 insertions, 207 deletions

diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index bb461936c..7b1838565 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -313,6 +313,7 @@ message SubscribeMetadataRequest {
     string path_prefix = 2;
     int64 since_ns = 3;
     int32 signature = 4;
+    repeated string path_prefixes = 6;
 }
 message SubscribeMetadataResponse {
     string directory = 1;
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index bb461936c..7b1838565 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -313,6 +313,7 @@ message SubscribeMetadataRequest {
     string path_prefix = 2;
     int64 since_ns = 3;
     int32 signature = 4;
+    repeated string path_prefixes = 6;
 }
 message SubscribeMetadataResponse {
     string directory = 1;
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index 3d0197a64..240338384 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -2521,10 +2521,11 @@ type SubscribeMetadataRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	ClientName string `protobuf:"bytes,1,opt,name=client_name,json=clientName,proto3" json:"client_name,omitempty"`
-	PathPrefix string `protobuf:"bytes,2,opt,name=path_prefix,json=pathPrefix,proto3" json:"path_prefix,omitempty"`
-	SinceNs    int64  `protobuf:"varint,3,opt,name=since_ns,json=sinceNs,proto3" json:"since_ns,omitempty"`
-	Signature  int32  `protobuf:"varint,4,opt,name=signature,proto3" json:"signature,omitempty"`
+	ClientName   string   `protobuf:"bytes,1,opt,name=client_name,json=clientName,proto3" json:"client_name,omitempty"`
+	PathPrefix   string   `protobuf:"bytes,2,opt,name=path_prefix,json=pathPrefix,proto3" json:"path_prefix,omitempty"`
+	SinceNs      int64    `protobuf:"varint,3,opt,name=since_ns,json=sinceNs,proto3" json:"since_ns,omitempty"`
+	Signature    int32    `protobuf:"varint,4,opt,name=signature,proto3" json:"signature,omitempty"`
+	PathPrefixes []string `protobuf:"bytes,6,rep,name=path_prefixes,json=pathPrefixes,proto3" json:"path_prefixes,omitempty"`
 }
 
 func (x *SubscribeMetadataRequest) Reset() {
@@ -2587,6 +2588,13 @@ func (x *SubscribeMetadataRequest) GetSignature() int32 {
 	return 0
 }
 
+func (x *SubscribeMetadataRequest) GetPathPrefixes() []string {
+	if x != nil {
+		return x.PathPrefixes
+	}
+	return nil
+}
+
 type SubscribeMetadataResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3782,7 +3790,7 @@ var file_filer_proto_rawDesc = []byte{
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@@ -3792,204 +3800,206 @@ var file_filer_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/weed/server/filer_grpc_server_sub_meta.go b/weed/server/filer_grpc_server_sub_meta.go
index 3fdac1b26..c7ba71e1c 100644
--- a/weed/server/filer_grpc_server_sub_meta.go
+++ b/weed/server/filer_grpc_server_sub_meta.go
@@ -201,14 +201,18 @@ func (fs *FilerServer) eachEventNotificationFn(req *filer_pb.SubscribeMetadataRe
 			return nil
 		}
 
-		if !strings.HasPrefix(fullpath, req.PathPrefix) {
-			if eventNotification.NewParentPath != "" {
-				newFullPath := util.Join(eventNotification.NewParentPath, entryName)
-				if !strings.HasPrefix(newFullPath, req.PathPrefix) {
+		if hasPrefixIn(fullpath, req.PathPrefixes) {
+			// good
+		}else {
+			if !strings.HasPrefix(fullpath, req.PathPrefix) {
+				if eventNotification.NewParentPath != "" {
+					newFullPath := util.Join(eventNotification.NewParentPath, entryName)
+					if !strings.HasPrefix(newFullPath, req.PathPrefix) {
+						return nil
+					}
+				} else {
 					return nil
 				}
-			} else {
-				return nil
 			}
 		}
 
@@ -227,6 +231,15 @@ func (fs *FilerServer) eachEventNotificationFn(req *filer_pb.SubscribeMetadataRe
 	}
 }
 
+func hasPrefixIn(text string, prefixes []string) bool {
+	for _, p := range prefixes {
+		if strings.HasPrefix(text, p) {
+			return true
+		}
+	}
+	return false
+}
+
 func (fs *FilerServer) addClient(clientType string, clientAddress string) (clientName string) {
 	clientName = clientType + "@" + clientAddress
 	glog.V(0).Infof("+ listener %v", clientName)