components/camel-spring/src/test/java/org/apache/camel/spring/config/CustomThreadPoolFactoryTest.java

/*
 * 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.camel.spring.config;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;

import org.apache.camel.CamelContext;
import org.apache.camel.spring.SpringRunWithTestSupport;
import org.apache.camel.support.DefaultThreadPoolFactory;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;

@ContextConfiguration
public class CustomThreadPoolFactoryTest extends SpringRunWithTestSupport {

    @Autowired
    protected CamelContext context;

    @Test
    public void testCustomThreadPoolFactory() throws Exception {
        context.getExecutorServiceManager().newSingleThreadExecutor(this, "foo");

        MyCustomThreadPoolFactory factory = assertIsInstanceOf(MyCustomThreadPoolFactory.class, context.getExecutorServiceManager().getThreadPoolFactory());
        assertTrue("Should use custom thread pool factory", factory.isInvoked());
    }

    public static class MyCustomThreadPoolFactory extends DefaultThreadPoolFactory {

        private volatile boolean invoked;

        @Override
        public ExecutorService newCachedThreadPool(ThreadFactory threadFactory) {
            invoked = true;
            return super.newCachedThreadPool(threadFactory);
        }

        @Override
        public ExecutorService newThreadPool(int corePoolSize, int maxPoolSize, long keepAliveTime, TimeUnit timeUnit, int maxQueueSize, 
                                             boolean allowCoreThreadTimeOut, RejectedExecutionHandler rejectedExecutionHandler, ThreadFactory threadFactory) throws IllegalArgumentException {
            invoked = true;
            return super.newThreadPool(corePoolSize, maxPoolSize, keepAliveTime, timeUnit, maxQueueSize, allowCoreThreadTimeOut, rejectedExecutionHandler, threadFactory);
        }

        public boolean isInvoked() {
            return invoked;
        }
    }


}