/*
 * Copyright (C) Scott Cranton, Jakub Korab, and Christian Posta
 * https://github.com/CamelCookbook
 *
 * 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.camelcookbook.parallelprocessing.threadsdsl;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;

import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.spi.Synchronization;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.Test;

/**
 * Test class that exercises InOut messaging that uses the threads DSL.
 */
public class ThreadsDslInOutTest extends CamelTestSupport {

    @Override
    public RouteBuilder createRouteBuilder() {
        return new ThreadsDslInOutRoute();
    }

    @Test
    public void testParallelConsumption() throws InterruptedException, ExecutionException {
        final int messageCount = 10;

        final MockEndpoint mockOut = getMockEndpoint("mock:out");
        mockOut.setExpectedMessageCount(messageCount);
        mockOut.setResultWaitTime(5000);

        for (int i = 0; i < messageCount; i++) {
            Future<Object> future = template.asyncRequestBody("direct:in", "Message[" + i + "]");
            // here we ask the Future to return to us the response set by the thread assigned by the
            // threads() DSL
            String response = (String) future.get();
            assertEquals("Processed", response);
        }

        assertMockEndpointsSatisfied();
    }

    @Test
    public void testParallelConsumptionCallback() throws InterruptedException, ExecutionException {
        final int messageCount = 10;

        final MockEndpoint mockOut = getMockEndpoint("mock:out");
        mockOut.setExpectedMessageCount(messageCount);
        mockOut.setResultWaitTime(5000);

        for (int i = 0; i < messageCount; i++) {
            Future<Object> future = template.asyncCallbackRequestBody("direct:in", "Message[" + i + "]",
                new Synchronization() {
                    @Override
                    public void onComplete(Exchange exchange) {
                        final Message response = exchange.hasOut() ? exchange.getOut() : exchange.getIn();
                        assertEquals("Processed", response.getBody(String.class));
                    }

                    @Override
                    public void onFailure(Exchange exchange) {
                        fail();
                    }
                });
        }

        assertMockEndpointsSatisfied();
    }
}