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.activemq.artemis.tests.integration.server;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.lang.reflect.Field;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ScheduledThreadPoolExecutor;
  import java.util.concurrent.ThreadPoolExecutor;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.ServiceRegistry;
  import org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl;
  import org.apache.activemq.artemis.core.server.impl.ServiceRegistryImpl;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.apache.activemq.artemis.utils.ActiveMQThreadFactory;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class SuppliedThreadPoolTest extends ActiveMQTestBase {
  
     private ActiveMQServer server;
  
     private ServiceRegistry serviceRegistry;
  
     @BeforeEach
     public void setup() throws Exception {
        serviceRegistry = new ServiceRegistryImpl();
        serviceRegistry.setExecutorService(Executors.newFixedThreadPool(1, ActiveMQThreadFactory.defaultThreadFactory(getClass().getName())));
        serviceRegistry.setIOExecutorService(Executors.newFixedThreadPool(5, ActiveMQThreadFactory.defaultThreadFactory(getClass().getName())));
        serviceRegistry.setScheduledExecutorService(Executors.newScheduledThreadPool(1, ActiveMQThreadFactory.defaultThreadFactory(getClass().getName())));
        server = new ActiveMQServerImpl(createBasicConfig(), null, null, null, serviceRegistry);
        server.start();
        server.waitForActivation(100, TimeUnit.MILLISECONDS);
     }
  
     @Override
     @AfterEach
     public void tearDown() throws Exception {
        if (server.isActive()) {
           server.stop();
        }
        serviceRegistry.getExecutorService().shutdown();
        serviceRegistry.getScheduledExecutorService().shutdown();
        serviceRegistry.getIOExecutorService().shutdown();
        super.tearDown();
     }
  
     @Test
     public void testSuppliedThreadPoolsAreCorrectlySet() throws Exception {
        assertEquals(serviceRegistry.getScheduledExecutorService(), server.getScheduledPool());
  
        // To check the Executor is what we expect we must reflectively inspect the OrderedExecutorFactory.
        Field field = server.getExecutorFactory().getClass().getDeclaredField("parent");
        field.setAccessible(true);
        assertEquals(serviceRegistry.getExecutorService(), field.get(server.getExecutorFactory()));
     }
  
     @Test
     public void testServerDoesNotShutdownSuppliedThreadPoolsOnStop() throws Exception {
        server.stop();
  
        ScheduledExecutorService scheduledExecutorService = server.getScheduledPool();
  
        Field field = server.getExecutorFactory().getClass().getDeclaredField("parent");
        field.setAccessible(true);
        ExecutorService threadPool = (ExecutorService) field.get(server.getExecutorFactory());
  
        // Ensure that references to the supplied Thread Pools still exist after shutdown.
        assertNotNull(threadPool);
        assertNotNull(scheduledExecutorService);
  
        // Ensure that ActiveMQ Artemis does not shutdown supplied thread pools.
        assertFalse(threadPool.isShutdown());
        assertFalse(scheduledExecutorService.isShutdown());
     }
  
     @Test
     public void testCanRestartWithSuppliedThreadPool() throws Exception {
        server.stop();
        server.start();
        server.waitForActivation(100, TimeUnit.MILLISECONDS);
        testSuppliedThreadPoolsAreCorrectlySet();
     }
  
     @Test
     public void testJobsGetScheduledToSuppliedThreadPool() throws Exception {
        server.stop();
  
        ScheduledThreadPoolExecutor scheduledExecutorService = (ScheduledThreadPoolExecutor) server.getScheduledPool();
  
        Field field = server.getExecutorFactory().getClass().getDeclaredField("parent");
        field.setAccessible(true);
        ThreadPoolExecutor threadPool = (ThreadPoolExecutor) field.get(server.getExecutorFactory());
  
        // Check jobs are getting scheduled and executed.
        assertTrue(threadPool.getCompletedTaskCount() > 0);
        assertTrue(scheduledExecutorService.getTaskCount() > 0);
     }
  }
  