content: /*
   * 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.windmill.client.grpc;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.instanceOf;
  import static org.hamcrest.Matchers.not;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertSame;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  import org.apache.beam.runners.dataflow.options.DataflowWorkerHarnessOptions;
  import org.apache.beam.runners.dataflow.worker.streaming.config.StreamingGlobalConfig;
  import org.apache.beam.runners.dataflow.worker.windmill.CloudWindmillServiceV1Alpha1Grpc.CloudWindmillServiceV1Alpha1Stub;
  import org.apache.beam.runners.dataflow.worker.windmill.Windmill.UserWorkerRunnerV1Settings;
  import org.apache.beam.runners.dataflow.worker.windmill.client.grpc.stubs.IsolationChannel;
  import org.apache.beam.runners.dataflow.worker.windmill.client.grpc.stubs.WindmillStubFactoryFactoryImpl;
  import org.apache.beam.sdk.options.PipelineOptionsFactory;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableSet;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.net.HostAndPort;
  import org.hamcrest.Matcher;
  import org.junit.Test;
  import org.junit.experimental.runners.Enclosed;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  import org.junit.runners.Parameterized;
  import org.junit.runners.Parameterized.Parameter;
  import org.junit.runners.Parameterized.Parameters;
  
  @RunWith(Enclosed.class)
  public class GrpcDispatcherClientTest {
  
    @RunWith(JUnit4.class)
    public static class RespectsJobSettingTest {
  
      @Test
      public void createsNewStubWhenIsolatedChannelsConfigIsChanged() {
        DataflowWorkerHarnessOptions options =
            PipelineOptionsFactory.as(DataflowWorkerHarnessOptions.class);
        GrpcDispatcherClient dispatcherClient =
            GrpcDispatcherClient.create(options, new WindmillStubFactoryFactoryImpl(options));
        // Create first time with Isolated channels disabled
        dispatcherClient.onJobConfig(getGlobalConfig(/*useWindmillIsolatedChannels=*/ false));
        CloudWindmillServiceV1Alpha1Stub stub1 = dispatcherClient.getWindmillServiceStub();
        CloudWindmillServiceV1Alpha1Stub stub2 = dispatcherClient.getWindmillServiceStub();
        assertSame(stub2, stub1);
        assertThat(stub1.getChannel(), not(instanceOf(IsolationChannel.class)));
  
        // Enable Isolated channels
        dispatcherClient.onJobConfig(getGlobalConfig(/*useWindmillIsolatedChannels=*/ true));
        CloudWindmillServiceV1Alpha1Stub stub3 = dispatcherClient.getWindmillServiceStub();
        assertNotSame(stub3, stub1);
  
        assertThat(stub3.getChannel(), instanceOf(IsolationChannel.class));
        CloudWindmillServiceV1Alpha1Stub stub4 = dispatcherClient.getWindmillServiceStub();
        assertSame(stub3, stub4);
  
        // Disable Isolated channels
        dispatcherClient.onJobConfig(getGlobalConfig(/*useWindmillIsolatedChannels=*/ false));
        CloudWindmillServiceV1Alpha1Stub stub5 = dispatcherClient.getWindmillServiceStub();
        assertNotSame(stub4, stub5);
        assertThat(stub5.getChannel(), not(instanceOf(IsolationChannel.class)));
      }
    }
  
    @RunWith(Parameterized.class)
    public static class RespectsPipelineOptionsTest {
  
      @Parameters
      public static Collection<Object[]> data() {
        List<Object[]> list = new ArrayList<>();
        for (Boolean pipelineOption : new Boolean[] {true, false}) {
          list.add(new Object[] {pipelineOption});
        }
        return list;
      }
  
      @Parameter(0)
      public Boolean pipelineOption;
  
      @Test
      public void ignoresIsolatedChannelsConfigWithPipelineOption() {
        DataflowWorkerHarnessOptions options =
            PipelineOptionsFactory.as(DataflowWorkerHarnessOptions.class);
        options.setUseWindmillIsolatedChannels(pipelineOption);
        GrpcDispatcherClient dispatcherClient =
            GrpcDispatcherClient.create(options, new WindmillStubFactoryFactoryImpl(options));
        Matcher<Object> classMatcher =
            pipelineOption
                ? instanceOf(IsolationChannel.class)
                : not(instanceOf(IsolationChannel.class));
  
        // Job setting disabled, PipelineOption enabled
        dispatcherClient.onJobConfig(getGlobalConfig(/*useWindmillIsolatedChannels=*/ false));
        CloudWindmillServiceV1Alpha1Stub stub1 = dispatcherClient.getWindmillServiceStub();
        CloudWindmillServiceV1Alpha1Stub stub2 = dispatcherClient.getWindmillServiceStub();
        assertSame(stub2, stub1);
        assertThat(stub1.getChannel(), classMatcher);
  
        // Job setting enabled
        dispatcherClient.onJobConfig(getGlobalConfig(/*useWindmillIsolatedChannels=*/ true));
        CloudWindmillServiceV1Alpha1Stub stub3 = dispatcherClient.getWindmillServiceStub();
        assertSame(stub3, stub1);
  
        CloudWindmillServiceV1Alpha1Stub stub4 = dispatcherClient.getWindmillServiceStub();
        assertSame(stub3, stub4);
  
        // Job setting disabled
        dispatcherClient.onJobConfig(getGlobalConfig(/*useWindmillIsolatedChannels=*/ false));
        CloudWindmillServiceV1Alpha1Stub stub5 = dispatcherClient.getWindmillServiceStub();
        assertSame(stub4, stub5);
      }
    }
  
    static StreamingGlobalConfig getGlobalConfig(boolean useWindmillIsolatedChannels) {
      return StreamingGlobalConfig.builder()
          .setWindmillServiceEndpoints(ImmutableSet.of(HostAndPort.fromString("windmill:1234")))
          .setUserWorkerJobSettings(
              UserWorkerRunnerV1Settings.newBuilder()
                  .setUseWindmillIsolatedChannels(useWindmillIsolatedChannels)
                  .build())
          .build();
    }
  }
  