/**
* 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.processor;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.apache.camel.AsyncCallback;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.model.LoggingLevel;
import org.apache.camel.util.AsyncProcessorHelper;
/**
* Test to ensure that async processing inside the DLC endpoint does not break message handling
* -> https://issues.apache.org/activemq/browse/CAMEL-2605
*
* @version $Revision: 761633 $
*/
public class DeadLetterChannelAsyncTest extends ContextTestSupport {
private static final int COUNT = 1;
private final CountDownLatch sent = new CountDownLatch(COUNT);
private final CountDownLatch handled = new CountDownLatch(COUNT);
private final Executor executor = Executors.newFixedThreadPool(2);
public void testAsyncDlcHandling() throws Exception {
executor.execute(new Runnable() {
public void run() {
sendBody("direct:start", "Desperately need processing...");
sent.countDown();
}
});
assertTrue("Call to sendBody should have ended successfully",
sent.await(2, TimeUnit.SECONDS));
assertTrue("Error should have been handled asynchronously",
handled.await(2, TimeUnit.SECONDS));
}
protected RouteBuilder createRouteBuilder() {
return new RouteBuilder() {
public void configure() {
errorHandler(deadLetterChannel("direct:dlc").maximumRedeliveries(0));
from("direct:start").process(new Processor() {
public void process(Exchange exchange) throws Exception {
throw new RuntimeException("Let's see what the DLC can do about me...");
}
});
from("direct:dlc").process(new AsyncProcessor() {
public boolean process(Exchange exchange, final AsyncCallback callback) {
executor.execute(new Runnable() {
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// ignoring this, we don't mind if we get woken up early
}
handled.countDown();
callback.done(false);
}
});
return false;
}
public void process(Exchange exchange) throws Exception {
AsyncProcessorHelper.process(this, exchange);
}
});
}
};
}
}