snapshot of https://github.com/livekit/livekit.git @ 08c5433449c106943231037d0b892895f6e92d3b (2026-09-15)

pkg/service/signal_test.go

@@ -0,0 +1,156 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package service_test
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"google.golang.org/protobuf/proto"
+
+	"github.com/livekit/livekit-server/pkg/config"
+	"github.com/livekit/livekit-server/pkg/routing"
+	"github.com/livekit/livekit-server/pkg/service"
+	"github.com/livekit/livekit-server/pkg/service/servicefakes"
+	"github.com/livekit/livekit-server/pkg/telemetry/prometheus"
+	"github.com/livekit/protocol/livekit"
+	"github.com/livekit/protocol/logger"
+	"github.com/livekit/protocol/utils/protojson"
+	"github.com/livekit/psrpc"
+)
+
+func init() {
+	prometheus.Init("node", livekit.NodeType_CONTROLLER)
+}
+
+func TestSignal(t *testing.T) {
+	cfg := config.SignalRelayConfig{
+		RetryTimeout:     30 * time.Second,
+		MinRetryInterval: 500 * time.Millisecond,
+		MaxRetryInterval: 5 * time.Second,
+		StreamBufferSize: 1000,
+	}
+
+	t.Run("messages are delivered", func(t *testing.T) {
+		bus := psrpc.NewLocalMessageBus()
+
+		reqMessageIn := &livekit.SignalRequest{
+			Message: &livekit.SignalRequest_Ping{Ping: 123},
+		}
+		resMessageIn := &livekit.SignalResponse{
+			Message: &livekit.SignalResponse_Pong{Pong: 321},
+		}
+
+		var reqMessageOut proto.Message
+		var resErr error
+		done := make(chan struct{})
+
+		client, err := routing.NewSignalClient(livekit.NodeID("node0"), bus, cfg)
+		require.NoError(t, err)
+
+		handler := &servicefakes.FakeSessionHandler{
+			LoggerStub: func(context.Context) logger.Logger { return logger.GetLogger() },
+			HandleSessionStub: func(
+				ctx context.Context,
+				pi routing.ParticipantInit,
+				connectionID livekit.ConnectionID,
+				requestSource routing.MessageSource,
+				responseSink routing.MessageSink,
+			) error {
+				go func() {
+					reqMessageOut = <-requestSource.ReadChan()
+					resErr = responseSink.WriteMessage(resMessageIn)
+					responseSink.Close()
+					close(done)
+				}()
+				return nil
+			},
+		}
+		server, err := service.NewSignalServer(livekit.NodeID("node1"), "region", bus, cfg, handler)
+		require.NoError(t, err)
+
+		err = server.Start()
+		require.NoError(t, err)
+
+		_, reqSink, resSource, err := client.StartParticipantSignal(
+			context.Background(),
+			livekit.RoomName("room1"),
+			routing.ParticipantInit{},
+			livekit.NodeID("node1"),
+		)
+		require.NoError(t, err)
+
+		err = reqSink.WriteMessage(reqMessageIn)
+		require.NoError(t, err)
+
+		<-done
+		require.True(t, proto.Equal(reqMessageIn, reqMessageOut), "req message should match %s %s", protojson.Format(reqMessageIn), protojson.Format(reqMessageOut))
+		require.NoError(t, resErr)
+
+		resMessageOut := <-resSource.ReadChan()
+		require.True(t, proto.Equal(resMessageIn, resMessageOut), "res message should match %s %s", protojson.Format(resMessageIn), protojson.Format(resMessageOut))
+	})
+
+	t.Run("messages are delivered when session handler fails", func(t *testing.T) {
+		bus := psrpc.NewLocalMessageBus()
+
+		resMessageIn := &livekit.SignalResponse{
+			Message: &livekit.SignalResponse_Pong{Pong: 321},
+		}
+
+		var resErr error
+		done := make(chan struct{})
+
+		client, err := routing.NewSignalClient(livekit.NodeID("node0"), bus, cfg)
+		require.NoError(t, err)
+
+		handler := &servicefakes.FakeSessionHandler{
+			LoggerStub: func(context.Context) logger.Logger { return logger.GetLogger() },
+			HandleSessionStub: func(
+				ctx context.Context,
+				pi routing.ParticipantInit,
+				connectionID livekit.ConnectionID,
+				requestSource routing.MessageSource,
+				responseSink routing.MessageSink,
+			) error {
+				defer close(done)
+				resErr = responseSink.WriteMessage(resMessageIn)
+				return errors.New("start session failed")
+			},
+		}
+		server, err := service.NewSignalServer(livekit.NodeID("node1"), "region", bus, cfg, handler)
+		require.NoError(t, err)
+
+		err = server.Start()
+		require.NoError(t, err)
+
+		_, _, resSource, err := client.StartParticipantSignal(
+			context.Background(),
+			livekit.RoomName("room1"),
+			routing.ParticipantInit{},
+			livekit.NodeID("node1"),
+		)
+		require.NoError(t, err)
+
+		<-done
+		require.NoError(t, resErr)
+
+		resMessageOut := <-resSource.ReadChan()
+		require.True(t, proto.Equal(resMessageIn, resMessageOut), "res message should match %s %s", protojson.Format(resMessageIn), protojson.Format(resMessageOut))
+	})
+}