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.fnexecution.environment;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.equalTo;
  import static org.hamcrest.Matchers.is;
  import static org.mockito.ArgumentMatchers.anyList;
  import static org.mockito.ArgumentMatchers.anyMap;
  import static org.mockito.ArgumentMatchers.anyString;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import java.io.IOException;
  import java.util.Collections;
  import org.apache.beam.model.pipeline.v1.Endpoints.ApiServiceDescriptor;
  import org.apache.beam.model.pipeline.v1.RunnerApi.Environment;
  import org.apache.beam.runners.fnexecution.control.InstructionRequestHandler;
  import org.apache.beam.runners.fnexecution.provisioning.StaticGrpcProvisionService;
  import org.apache.beam.sdk.fn.IdGenerator;
  import org.apache.beam.sdk.fn.IdGenerators;
  import org.apache.beam.sdk.fn.server.GrpcFnServer;
  import org.apache.beam.sdk.options.PipelineOptionsFactory;
  import org.apache.beam.sdk.options.RemoteEnvironmentOptions;
  import org.apache.beam.sdk.util.construction.Environments;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.Timeout;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  import org.mockito.Mock;
  import org.mockito.Mockito;
  import org.mockito.MockitoAnnotations;
  
  /** Tests for {@link ProcessEnvironmentFactory}. */
  @RunWith(JUnit4.class)
  public class ProcessEnvironmentFactoryTest {
    @Rule public transient Timeout globalTimeout = Timeout.seconds(600);
    private static final ApiServiceDescriptor SERVICE_DESCRIPTOR =
        ApiServiceDescriptor.newBuilder().setUrl("service-url").build();
    private static final String COMMAND = "my-command";
    private static final Environment ENVIRONMENT =
        Environments.createProcessEnvironment("", "", COMMAND, Collections.emptyMap());
  
    private static final InspectibleIdGenerator ID_GENERATOR = new InspectibleIdGenerator();
  
    @Mock private ProcessManager processManager;
  
    @Mock private GrpcFnServer<StaticGrpcProvisionService> provisioningServiceServer;
  
    @Mock private InstructionRequestHandler client;
    private ProcessEnvironmentFactory factory;
  
    @Before
    public void initMocks() throws IOException {
      MockitoAnnotations.initMocks(this);
  
      when(processManager.startProcess(anyString(), anyString(), anyList(), anyMap()))
          .thenReturn(Mockito.mock(ProcessManager.RunningProcess.class));
      when(provisioningServiceServer.getApiServiceDescriptor()).thenReturn(SERVICE_DESCRIPTOR);
      factory =
          ProcessEnvironmentFactory.create(
              processManager,
              provisioningServiceServer,
              (workerId, timeout) -> client,
              ID_GENERATOR,
              PipelineOptionsFactory.as(RemoteEnvironmentOptions.class));
    }
  
    @Test
    public void createsCorrectEnvironment() throws Exception {
      RemoteEnvironment handle = factory.createEnvironment(ENVIRONMENT, "workerId");
      assertThat(handle.getInstructionRequestHandler(), is(client));
      assertThat(handle.getEnvironment(), equalTo(ENVIRONMENT));
      Mockito.verify(processManager).startProcess(eq("workerId"), anyString(), anyList(), anyMap());
    }
  
    @Test
    public void destroysCorrectContainer() throws Exception {
      RemoteEnvironment handle = factory.createEnvironment(ENVIRONMENT, "workerId");
      handle.close();
      verify(processManager).stopProcess("workerId");
    }
  
    @Test
    public void createsMultipleEnvironments() throws Exception {
      Environment fooEnv =
          Environments.createProcessEnvironment("", "", "foo", Collections.emptyMap());
      RemoteEnvironment fooHandle = factory.createEnvironment(fooEnv, "workerId");
      assertThat(fooHandle.getEnvironment(), is(equalTo(fooEnv)));
  
      Environment barEnv =
          Environments.createProcessEnvironment("", "", "bar", Collections.emptyMap());
      RemoteEnvironment barHandle = factory.createEnvironment(barEnv, "workerId");
      assertThat(barHandle.getEnvironment(), is(equalTo(barEnv)));
    }
  
    private static class InspectibleIdGenerator implements IdGenerator {
  
      private IdGenerator generator = IdGenerators.incrementingLongs();
      String currentId;
  
      @Override
      public String getId() {
        currentId = generator.getId();
        return currentId;
      }
    }
  }
  