| /* |
| * |
| * Copyright 2021 gRPC authors. |
| * |
| * 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. |
| * |
| */ |
| |
| // Binary server is the server used for xDS interop tests. |
| package main |
| |
| import ( |
| "context" |
| "flag" |
| "fmt" |
| "log" |
| "net" |
| "os" |
| |
| "google.golang.org/grpc" |
| "google.golang.org/grpc/admin" |
| "google.golang.org/grpc/credentials/insecure" |
| "google.golang.org/grpc/grpclog" |
| "google.golang.org/grpc/health" |
| "google.golang.org/grpc/metadata" |
| "google.golang.org/grpc/reflection" |
| "google.golang.org/grpc/xds" |
| |
| xdscreds "google.golang.org/grpc/credentials/xds" |
| healthpb "google.golang.org/grpc/health/grpc_health_v1" |
| testgrpc "google.golang.org/grpc/interop/grpc_testing" |
| testpb "google.golang.org/grpc/interop/grpc_testing" |
| ) |
| |
| var ( |
| port = flag.Int("port", 8080, "Listening port for test service") |
| maintenancePort = flag.Int("maintenance_port", 8081, "Listening port for maintenance services like health, reflection, channelz etc when -secure_mode is true. When -secure_mode is false, all these services will be registered on -port") |
| serverID = flag.String("server_id", "go_server", "Server ID included in response") |
| secureMode = flag.Bool("secure_mode", false, "If true, retrieve security configuration from the management server. Else, use insecure credentials.") |
| |
| logger = grpclog.Component("interop") |
| ) |
| |
| func getHostname() string { |
| hostname, err := os.Hostname() |
| if err != nil { |
| log.Fatalf("failed to get hostname: %v", err) |
| } |
| return hostname |
| } |
| |
| // testServiceImpl provides an implementation of the TestService defined in |
| // grpc.testing package. |
| type testServiceImpl struct { |
| testgrpc.UnimplementedTestServiceServer |
| hostname string |
| } |
| |
| func (s *testServiceImpl) EmptyCall(ctx context.Context, _ *testpb.Empty) (*testpb.Empty, error) { |
| grpc.SetHeader(ctx, metadata.Pairs("hostname", s.hostname)) |
| return &testpb.Empty{}, nil |
| } |
| |
| func (s *testServiceImpl) UnaryCall(ctx context.Context, in *testpb.SimpleRequest) (*testpb.SimpleResponse, error) { |
| grpc.SetHeader(ctx, metadata.Pairs("hostname", s.hostname)) |
| return &testpb.SimpleResponse{ServerId: *serverID, Hostname: s.hostname}, nil |
| } |
| |
| // xdsUpdateHealthServiceImpl provides an implementation of the |
| // XdsUpdateHealthService defined in grpc.testing package. |
| type xdsUpdateHealthServiceImpl struct { |
| testgrpc.UnimplementedXdsUpdateHealthServiceServer |
| healthServer *health.Server |
| } |
| |
| func (x *xdsUpdateHealthServiceImpl) SetServing(_ context.Context, _ *testpb.Empty) (*testpb.Empty, error) { |
| x.healthServer.SetServingStatus("", healthpb.HealthCheckResponse_SERVING) |
| return &testpb.Empty{}, nil |
| |
| } |
| |
| func (x *xdsUpdateHealthServiceImpl) SetNotServing(_ context.Context, _ *testpb.Empty) (*testpb.Empty, error) { |
| x.healthServer.SetServingStatus("", healthpb.HealthCheckResponse_NOT_SERVING) |
| return &testpb.Empty{}, nil |
| } |
| |
| func xdsServingModeCallback(addr net.Addr, args xds.ServingModeChangeArgs) { |
| logger.Infof("Serving mode for xDS server at %s changed to %s", addr.String(), args.Mode) |
| if args.Err != nil { |
| logger.Infof("ServingModeCallback returned error: %v", args.Err) |
| } |
| } |
| |
| func main() { |
| flag.Parse() |
| |
| if *secureMode && *port == *maintenancePort { |
| logger.Fatal("-port and -maintenance_port must be different when -secure_mode is set") |
| } |
| |
| testService := &testServiceImpl{hostname: getHostname()} |
| healthServer := health.NewServer() |
| updateHealthService := &xdsUpdateHealthServiceImpl{healthServer: healthServer} |
| |
| // If -secure_mode is not set, expose all services on -port with a regular |
| // gRPC server. |
| if !*secureMode { |
| lis, err := net.Listen("tcp4", fmt.Sprintf(":%d", *port)) |
| if err != nil { |
| logger.Fatalf("net.Listen(%s) failed: %v", fmt.Sprintf(":%d", *port), err) |
| } |
| |
| server := grpc.NewServer() |
| testgrpc.RegisterTestServiceServer(server, testService) |
| healthServer.SetServingStatus("", healthpb.HealthCheckResponse_SERVING) |
| healthpb.RegisterHealthServer(server, healthServer) |
| testgrpc.RegisterXdsUpdateHealthServiceServer(server, updateHealthService) |
| reflection.Register(server) |
| cleanup, err := admin.Register(server) |
| if err != nil { |
| logger.Fatalf("Failed to register admin services: %v", err) |
| } |
| defer cleanup() |
| if err := server.Serve(lis); err != nil { |
| logger.Errorf("Serve() failed: %v", err) |
| } |
| return |
| } |
| |
| // Create a listener on -port to expose the test service. |
| testLis, err := net.Listen("tcp4", fmt.Sprintf(":%d", *port)) |
| if err != nil { |
| logger.Fatalf("net.Listen(%s) failed: %v", fmt.Sprintf(":%d", *port), err) |
| } |
| |
| // Create server-side xDS credentials with a plaintext fallback. |
| creds, err := xdscreds.NewServerCredentials(xdscreds.ServerOptions{FallbackCreds: insecure.NewCredentials()}) |
| if err != nil { |
| logger.Fatalf("Failed to create xDS credentials: %v", err) |
| } |
| |
| // Create an xDS enabled gRPC server, register the test service |
| // implementation and start serving. |
| testServer := xds.NewGRPCServer(grpc.Creds(creds), xds.ServingModeCallback(xdsServingModeCallback)) |
| testgrpc.RegisterTestServiceServer(testServer, testService) |
| go func() { |
| if err := testServer.Serve(testLis); err != nil { |
| logger.Errorf("test server Serve() failed: %v", err) |
| } |
| }() |
| defer testServer.Stop() |
| |
| // Create a listener on -maintenance_port to expose other services. |
| maintenanceLis, err := net.Listen("tcp4", fmt.Sprintf(":%d", *maintenancePort)) |
| if err != nil { |
| logger.Fatalf("net.Listen(%s) failed: %v", fmt.Sprintf(":%d", *maintenancePort), err) |
| } |
| |
| // Create a regular gRPC server and register the maintenance services on |
| // it and start serving. |
| maintenanceServer := grpc.NewServer() |
| healthServer.SetServingStatus("", healthpb.HealthCheckResponse_SERVING) |
| healthpb.RegisterHealthServer(maintenanceServer, healthServer) |
| testgrpc.RegisterXdsUpdateHealthServiceServer(maintenanceServer, updateHealthService) |
| reflection.Register(maintenanceServer) |
| cleanup, err := admin.Register(maintenanceServer) |
| if err != nil { |
| logger.Fatalf("Failed to register admin services: %v", err) |
| } |
| defer cleanup() |
| if err := maintenanceServer.Serve(maintenanceLis); err != nil { |
| logger.Errorf("maintenance server Serve() failed: %v", err) |
| } |
| } |