| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.runners.dataflow.worker.fn; |
| |
| import static org.junit.Assert.assertNotNull; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.verifyNoMoreInteractions; |
| |
| import java.net.InetAddress; |
| import java.net.ServerSocket; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.beam.model.fnexecution.v1.BeamFnApi; |
| import org.apache.beam.model.fnexecution.v1.BeamFnControlGrpc; |
| import org.apache.beam.model.pipeline.v1.Endpoints; |
| import org.apache.beam.runners.dataflow.worker.fn.stream.ServerStreamObserverFactory; |
| import org.apache.beam.runners.fnexecution.GrpcContextHeaderAccessorProvider; |
| import org.apache.beam.runners.fnexecution.ServerFactory; |
| import org.apache.beam.runners.fnexecution.control.FnApiControlClient; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.vendor.grpc.v1p13p1.io.grpc.ManagedChannelBuilder; |
| import org.apache.beam.vendor.grpc.v1p13p1.io.grpc.Server; |
| import org.apache.beam.vendor.grpc.v1p13p1.io.grpc.stub.StreamObserver; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableList; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.net.HostAndPort; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| |
| /** Tests for {@link BeamFnControlService}. */ |
| @RunWith(JUnit4.class) |
| public class BeamFnControlServiceTest { |
| @Mock private StreamObserver<BeamFnApi.InstructionRequest> requestObserver; |
| @Mock private StreamObserver<BeamFnApi.InstructionRequest> anotherRequestObserver; |
| |
| @Before |
| public void setUp() { |
| MockitoAnnotations.initMocks(this); |
| } |
| |
| private Endpoints.ApiServiceDescriptor findOpenPort() throws Exception { |
| InetAddress address = InetAddress.getLoopbackAddress(); |
| try (ServerSocket socket = new ServerSocket(0, -1, address)) { |
| return Endpoints.ApiServiceDescriptor.newBuilder() |
| .setUrl(HostAndPort.fromParts(address.getHostAddress(), socket.getLocalPort()).toString()) |
| .build(); |
| } |
| } |
| |
| @Test |
| public void testClientConnecting() throws Exception { |
| PipelineOptions options = PipelineOptionsFactory.create(); |
| Endpoints.ApiServiceDescriptor descriptor = findOpenPort(); |
| BeamFnControlService service = |
| new BeamFnControlService( |
| descriptor, |
| ServerStreamObserverFactory.fromOptions(options)::from, |
| GrpcContextHeaderAccessorProvider.getHeaderAccessor()); |
| Server server = ServerFactory.createDefault().create(ImmutableList.of(service), descriptor); |
| String url = service.getApiServiceDescriptor().getUrl(); |
| BeamFnControlGrpc.BeamFnControlStub clientStub = |
| BeamFnControlGrpc.newStub(ManagedChannelBuilder.forTarget(url).usePlaintext(true).build()); |
| |
| // Connect from the client. |
| clientStub.control(requestObserver); |
| try (FnApiControlClient client = service.get()) { |
| assertNotNull(client); |
| } |
| server.shutdown(); |
| server.awaitTermination(1, TimeUnit.SECONDS); |
| server.shutdownNow(); |
| Thread.sleep(1000); // Wait for stub to close stream. |
| |
| verify(requestObserver).onCompleted(); |
| verifyNoMoreInteractions(requestObserver); |
| } |
| |
| @Test |
| public void testMultipleClientsConnecting() throws Exception { |
| PipelineOptions options = PipelineOptionsFactory.create(); |
| Endpoints.ApiServiceDescriptor descriptor = findOpenPort(); |
| BeamFnControlService service = |
| new BeamFnControlService( |
| descriptor, |
| ServerStreamObserverFactory.fromOptions(options)::from, |
| GrpcContextHeaderAccessorProvider.getHeaderAccessor()); |
| Server server = ServerFactory.createDefault().create(ImmutableList.of(service), descriptor); |
| |
| String url = service.getApiServiceDescriptor().getUrl(); |
| BeamFnControlGrpc.BeamFnControlStub clientStub = |
| BeamFnControlGrpc.newStub(ManagedChannelBuilder.forTarget(url).usePlaintext(true).build()); |
| BeamFnControlGrpc.BeamFnControlStub anotherClientStub = |
| BeamFnControlGrpc.newStub(ManagedChannelBuilder.forTarget(url).usePlaintext(true).build()); |
| |
| // Connect from the client. |
| clientStub.control(requestObserver); |
| |
| // Connect again from the client. |
| anotherClientStub.control(anotherRequestObserver); |
| |
| try (FnApiControlClient client = service.get()) { |
| assertNotNull(client); |
| try (FnApiControlClient anotherClient = service.get()) { |
| assertNotNull(anotherClient); |
| } |
| } |
| |
| server.shutdown(); |
| server.awaitTermination(1, TimeUnit.SECONDS); |
| server.shutdownNow(); |
| Thread.sleep(1000); // Wait for stub to close stream. |
| |
| verify(requestObserver).onCompleted(); |
| verifyNoMoreInteractions(requestObserver); |
| verify(anotherRequestObserver).onCompleted(); |
| verifyNoMoreInteractions(anotherRequestObserver); |
| } |
| } |