/*
 * 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.ip.tcp;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * @author Gary Russell
 * @since 2.0
 */
@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class InterceptedSharedConnectionTests {

	@Autowired
	AbstractApplicationContext ctx;

	@Autowired
	@Qualifier("inboundServer")
	TcpReceivingChannelAdapter listener;

	private static Level existingLogLevel;

	// temporary hooks to investigate CI failures
	@BeforeClass
	public static void setup() {
		existingLogLevel = LogManager.getLogger("org.springframework.integration").getLevel();
		LogManager.getLogger("org.springframework.integration").setLevel(Level.DEBUG);
	}

	@AfterClass
	public static void tearDown() {
		LogManager.getLogger("org.springframework.integration").setLevel(existingLogLevel);
	}

	/**
	 * Tests a loopback. The client-side outbound adapter sends a message over
	 * a connection from the client connection factory; the server side
	 * receives the message, puts in on a channel which is the input channel
	 * for the outbound adapter that's sharing the connections. The response
	 * comes back to an inbound adapter that is sharing the client's
	 * connection and we verify we get the echo back as expected.
	 *
	 * @throws Exception
	 */
	@Test
	public void test1() throws Exception {
		int n = 0;
		while (!listener.isListening()) {
			Thread.sleep(100);
			if (n++ > 100) {
				fail("Failed to listen");
			}
		}
		for (int i = 0; i < 5; i++) {
			MessageChannel input = ctx.getBean("input", MessageChannel.class);
			input.send(MessageBuilder.withPayload("Test").build());
			QueueChannel replies = ctx.getBean("replies", QueueChannel.class);
			Message<?> message = replies.receive(10000);
			assertNotNull(message);
			assertEquals("Test", message.getPayload());
		}
	}

}