/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed 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.springframework.integration.jms.request_reply;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicInteger;

import org.junit.Rule;
import org.junit.Test;

import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.integration.gateway.RequestReplyExchanger;
import org.springframework.integration.jms.config.ActiveMqTestUtils;
import org.springframework.integration.test.support.LongRunningIntegrationTest;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.util.StopWatch;
/**
 * @author Oleg Zhurakousky
 * @author Gary Russell
 */
public class MiscellaneousTests {

	@Rule
	public LongRunningIntegrationTest longRunning = new LongRunningIntegrationTest();

	/**
	 * Asserts that receive-timeout is honored even if
	 * requests (once in process), takes less then receive-timeout value
	 * when requests are queued up (e.g., single consumer receiver)
	 */
	@Test
	public void testTimeoutHonoringWhenRequestsQueuedUp() throws Exception {
		ActiveMqTestUtils.prepare();
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("honor-timeout.xml", this.getClass());
		final RequestReplyExchanger gateway = context.getBean(RequestReplyExchanger.class);
		final CountDownLatch latch = new CountDownLatch(3);
		final AtomicInteger replies = new AtomicInteger();
		StopWatch stopWatch = new StopWatch();
		stopWatch.start();
		for (int i = 0; i < 3; i++) {
			this.exchange(latch, gateway, replies);
		}
		latch.await();
		stopWatch.stop();
		assertTrue(stopWatch.getTotalTimeMillis() <= 18000);
		assertEquals(1, replies.get());
		context.close();
	}


	private void exchange(final CountDownLatch latch, final RequestReplyExchanger gateway, final AtomicInteger replies) {
		new Thread(() -> {
			try {
				gateway.exchange(new GenericMessage<String>(""));
				replies.incrementAndGet();
			}
			catch (Exception e) {
				//ignore
			}
			latch.countDown();
		}).start();
	}
}