[client] Add UI client event notifications (#3207)

client/proto/daemon.proto

@@ -59,6 +59,10 @@ service DaemonService {
   rpc SetNetworkMapPersistence(SetNetworkMapPersistenceRequest) returns (SetNetworkMapPersistenceResponse) {}
 
   rpc TracePacket(TracePacketRequest) returns (TracePacketResponse) {}
+
+  rpc SubscribeEvents(SubscribeRequest) returns (stream SystemEvent) {}
+
+  rpc GetEvents(GetEventsRequest) returns (GetEventsResponse) {}
 }
 
 
@@ -116,6 +120,8 @@ message LoginRequest {
   optional bool disable_firewall = 23;
 
   optional bool block_lan_access = 24;
+
+  optional bool disable_notifications = 25;
 }
 
 message LoginResponse {
@@ -181,6 +187,8 @@ message GetConfigResponse {
   bool rosenpassEnabled = 11;
 
   bool rosenpassPermissive = 12;
+
+  bool disable_notifications = 13;
 }
 
 // PeerState contains the latest state of a peer
@@ -251,6 +259,8 @@ message FullStatus {
   repeated PeerState peers = 4;
   repeated RelayState relays = 5;
   repeated NSGroupState dns_servers = 6;
+
+  repeated SystemEvent events = 7;
 }
 
 message ListNetworksRequest {
@@ -391,3 +401,35 @@ message TracePacketResponse {
   repeated TraceStage stages = 1;
   bool final_disposition = 2;
 }
+
+message SubscribeRequest{}
+
+message SystemEvent {
+  enum Severity {
+    INFO = 0;
+    WARNING = 1;
+    ERROR = 2;
+    CRITICAL = 3;
+  }
+
+  enum Category {
+    NETWORK = 0;
+    DNS = 1;
+    AUTHENTICATION = 2;
+    CONNECTIVITY = 3;
+  }
+
+  string id = 1;
+  Severity severity = 2;
+  Category category = 3;
+  string message = 4;
+  string userMessage = 5;
+  google.protobuf.Timestamp timestamp = 6;
+  map<string, string> metadata = 7;
+}
+
+message GetEventsRequest {}
+
+message GetEventsResponse {
+  repeated SystemEvent events = 1;
+}

client/proto/daemon_grpc.pb.go

@@ -52,6 +52,8 @@ type DaemonServiceClient interface {
 	// SetNetworkMapPersistence enables or disables network map persistence
 	SetNetworkMapPersistence(ctx context.Context, in *SetNetworkMapPersistenceRequest, opts ...grpc.CallOption) (*SetNetworkMapPersistenceResponse, error)
 	TracePacket(ctx context.Context, in *TracePacketRequest, opts ...grpc.CallOption) (*TracePacketResponse, error)
+	SubscribeEvents(ctx context.Context, in *SubscribeRequest, opts ...grpc.CallOption) (DaemonService_SubscribeEventsClient, error)
+	GetEvents(ctx context.Context, in *GetEventsRequest, opts ...grpc.CallOption) (*GetEventsResponse, error)
 }
 
 type daemonServiceClient struct {
@@ -215,6 +217,47 @@ func (c *daemonServiceClient) TracePacket(ctx context.Context, in *TracePacketRe
 	return out, nil
 }
 
+func (c *daemonServiceClient) SubscribeEvents(ctx context.Context, in *SubscribeRequest, opts ...grpc.CallOption) (DaemonService_SubscribeEventsClient, error) {
+	stream, err := c.cc.NewStream(ctx, &DaemonService_ServiceDesc.Streams[0], "/daemon.DaemonService/SubscribeEvents", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &daemonServiceSubscribeEventsClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type DaemonService_SubscribeEventsClient interface {
+	Recv() (*SystemEvent, error)
+	grpc.ClientStream
+}
+
+type daemonServiceSubscribeEventsClient struct {
+	grpc.ClientStream
+}
+
+func (x *daemonServiceSubscribeEventsClient) Recv() (*SystemEvent, error) {
+	m := new(SystemEvent)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *daemonServiceClient) GetEvents(ctx context.Context, in *GetEventsRequest, opts ...grpc.CallOption) (*GetEventsResponse, error) {
+	out := new(GetEventsResponse)
+	err := c.cc.Invoke(ctx, "/daemon.DaemonService/GetEvents", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // DaemonServiceServer is the server API for DaemonService service.
 // All implementations must embed UnimplementedDaemonServiceServer
 // for forward compatibility
@@ -253,6 +296,8 @@ type DaemonServiceServer interface {
 	// SetNetworkMapPersistence enables or disables network map persistence
 	SetNetworkMapPersistence(context.Context, *SetNetworkMapPersistenceRequest) (*SetNetworkMapPersistenceResponse, error)
 	TracePacket(context.Context, *TracePacketRequest) (*TracePacketResponse, error)
+	SubscribeEvents(*SubscribeRequest, DaemonService_SubscribeEventsServer) error
+	GetEvents(context.Context, *GetEventsRequest) (*GetEventsResponse, error)
 	mustEmbedUnimplementedDaemonServiceServer()
 }
 
@@ -311,6 +356,12 @@ func (UnimplementedDaemonServiceServer) SetNetworkMapPersistence(context.Context
 func (UnimplementedDaemonServiceServer) TracePacket(context.Context, *TracePacketRequest) (*TracePacketResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method TracePacket not implemented")
 }
+func (UnimplementedDaemonServiceServer) SubscribeEvents(*SubscribeRequest, DaemonService_SubscribeEventsServer) error {
+	return status.Errorf(codes.Unimplemented, "method SubscribeEvents not implemented")
+}
+func (UnimplementedDaemonServiceServer) GetEvents(context.Context, *GetEventsRequest) (*GetEventsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetEvents not implemented")
+}
 func (UnimplementedDaemonServiceServer) mustEmbedUnimplementedDaemonServiceServer() {}
 
 // UnsafeDaemonServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -630,6 +681,45 @@ func _DaemonService_TracePacket_Handler(srv interface{}, ctx context.Context, de
 	return interceptor(ctx, in, info, handler)
 }
 
+func _DaemonService_SubscribeEvents_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(SubscribeRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(DaemonServiceServer).SubscribeEvents(m, &daemonServiceSubscribeEventsServer{stream})
+}
+
+type DaemonService_SubscribeEventsServer interface {
+	Send(*SystemEvent) error
+	grpc.ServerStream
+}
+
+type daemonServiceSubscribeEventsServer struct {
+	grpc.ServerStream
+}
+
+func (x *daemonServiceSubscribeEventsServer) Send(m *SystemEvent) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _DaemonService_GetEvents_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetEventsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DaemonServiceServer).GetEvents(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/daemon.DaemonService/GetEvents",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DaemonServiceServer).GetEvents(ctx, req.(*GetEventsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // DaemonService_ServiceDesc is the grpc.ServiceDesc for DaemonService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -705,7 +795,17 @@ var DaemonService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "TracePacket",
 			Handler:    _DaemonService_TracePacket_Handler,
 		},
+		{
+			MethodName: "GetEvents",
+			Handler:    _DaemonService_GetEvents_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "SubscribeEvents",
+			Handler:       _DaemonService_SubscribeEvents_Handler,
+			ServerStreams: true,
+		},
 	},
-	Streams:  []grpc.StreamDesc{},
 	Metadata: "daemon.proto",
 }