/**
* 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.impl;
import org.apache.camel.Consumer;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Endpoint;
import org.apache.camel.PollingConsumerPollStrategy;
public class ScheduledPollConsumerTest extends ContextTestSupport {
private static boolean rollback;
private static int counter;
private static String event = "";
public void testExceptionOnPollAndCanStartAgain() throws Exception {
final Exception expectedException = new Exception("Hello, I should be thrown on shutdown only!");
MockScheduledPollConsumer consumer = new MockScheduledPollConsumer(expectedException);
consumer.setPollStrategy(new PollingConsumerPollStrategy() {
public void begin(Consumer consumer, Endpoint endpoint) {
}
public void commit(Consumer consumer, Endpoint endpoint) {
}
public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
if (e == expectedException) {
rollback = true;
}
return false;
}
});
consumer.start();
// poll that throws an exception
consumer.run();
consumer.stop();
assertEquals("Should have rollback", true, rollback);
// prepare for 2nd run but this time it should not thrown an exception on poll
rollback = false;
consumer.setExceptionToThrowOnPoll(null);
// start it again and we should be able to run
consumer.start();
consumer.run();
// should be able to stop with no problem
consumer.stop();
assertEquals("Should not have rollback", false, rollback);
}
public void testRetryAtMostThreeTimes() throws Exception {
counter = 0;
event = "";
final Exception expectedException = new Exception("Hello, I should be thrown on shutdown only!");
MockScheduledPollConsumer consumer = new MockScheduledPollConsumer(expectedException);
consumer.setPollStrategy(new PollingConsumerPollStrategy() {
public void begin(Consumer consumer, Endpoint endpoint) {
}
public void commit(Consumer consumer, Endpoint endpoint) {
event += "commit";
}
public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
event += "rollback";
counter++;
if (retryCounter < 3) {
return true;
}
return false;
}
});
consumer.setUseFixedDelay(true);
consumer.setDelay(60000);
consumer.start();
// poll that throws an exception
consumer.run();
consumer.stop();
// 3 retries + 1 last failed attempt when we give up
assertEquals(4, counter);
assertEquals("rollbackrollbackrollbackrollback", event);
}
public void testNoExceptionOnPoll() throws Exception {
MockScheduledPollConsumer consumer = new MockScheduledPollConsumer(null);
consumer.start();
consumer.run();
consumer.stop();
}
}