/**
 * 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.component.disruptor;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

import org.apache.camel.ProducerTemplate;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.impl.DefaultProducerTemplate;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.Test;

/**
 * @version
 */
public class DisruptorConcurrentTest extends CamelTestSupport {
    @Test
    public void testDisruptorConcurrentInOnly() throws Exception {
        final MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(20);

        // should at least take 3 sec
        mock.setMinimumResultWaitTime(3000);

        for (int i = 0; i < 20; i++) {
            template.sendBody("disruptor:foo", "Message " + i);
        }

        assertMockEndpointsSatisfied();
    }

    @Test
    public void testDisruptorConcurrentInOnlyWithAsync() throws Exception {
        final MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(20);

        // should at least take 3 sec
        mock.setMinimumResultWaitTime(3000);

        for (int i = 0; i < 20; i++) {
            template.asyncSendBody("disruptor:foo", "Message " + i);
        }

        assertMockEndpointsSatisfied();
    }

    @Test
    public void testDisruptorConcurrentInOut() throws Exception {
        final MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(20);
        mock.allMessages().body().startsWith("Bye");

        // should at least take 3 sec
        mock.setMinimumResultWaitTime(3000);

        final ExecutorService executors = Executors.newFixedThreadPool(10);
        final List<Object> replies = new ArrayList<Object>(20);
        for (int i = 0; i < 20; i++) {
            final int num = i;
            final Object out = executors.submit(new Callable<Object>() {
                @Override
                public Object call() throws Exception {
                    return template.requestBody("disruptor:bar", "Message " + num);
                }
            });
            replies.add(out);
        }

        assertMockEndpointsSatisfied();

        assertEquals(20, replies.size());
        executors.shutdownNow();
    }

    @Test
    public void testDisruptorConcurrentInOutWithAsync() throws Exception {
        final MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(20);
        mock.allMessages().body().startsWith("Bye");

        // should at least take 3 sec
        mock.setMinimumResultWaitTime(3000);

        // use our own template that has a higher thread pool than default camel that uses 5
        final ExecutorService executor = Executors.newFixedThreadPool(10);
        final ProducerTemplate pt = new DefaultProducerTemplate(context, executor);
        // must start the template
        pt.start();

        final List<Future<Object>> replies = new ArrayList<Future<Object>>(20);
        for (int i = 0; i < 20; i++) {
            final Future<Object> out = pt.asyncRequestBody("disruptor:bar", "Message " + i);
            replies.add(out);
        }

        assertMockEndpointsSatisfied();

        assertEquals(20, replies.size());
        for (int i = 0; i < 20; i++) {
            final String out = (String)replies.get(i).get();
            assertTrue(out.startsWith("Bye"));
        }
        pt.stop();
        executor.shutdownNow();
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("disruptor:foo?concurrentConsumers=10").to("mock:before").delay(2000).to("mock:result");

                from("disruptor:bar?concurrentConsumers=10").to("mock:before").delay(2000)
                        .transform(body().prepend("Bye ")).to("mock:result");
            }
        };
    }
}