/**
* 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.falcon.rerun.handler;
import org.apache.falcon.FalconException;
import org.apache.falcon.aspect.GenericAlert;
import org.apache.falcon.entity.v0.Entity;
import org.apache.falcon.entity.v0.Frequency;
import org.apache.falcon.entity.v0.process.PolicyType;
import org.apache.falcon.entity.v0.process.Retry;
import org.apache.falcon.rerun.event.RetryEvent;
import org.apache.falcon.rerun.policy.AbstractRerunPolicy;
import org.apache.falcon.rerun.policy.RerunPolicyFactory;
import org.apache.falcon.rerun.queue.DelayedQueue;
/**
* An implementation of retry handler that kicks off retries until the
* configured attempts are exhausted.
*
* @param <M>
*/
public class RetryHandler<M extends DelayedQueue<RetryEvent>> extends
AbstractRerunHandler<RetryEvent, M> {
@Override
//SUSPEND CHECKSTYLE CHECK ParameterNumberCheck
public void handleRerun(String clusterName, String entityType, String entityName, String nominalTime,
String runId, String wfId, String workflowUser, long msgReceivedTime) {
try {
Entity entity = getEntity(entityType, entityName);
Retry retry = getRetry(entity);
if (retry == null) {
LOG.warn("Retry not configured for entity:" + entityType + "("
+ entity.getName() + "), ignoring failed retries");
return;
}
int attempts = retry.getAttempts();
Frequency delay = retry.getDelay();
PolicyType policy = retry.getPolicy();
int intRunId = Integer.parseInt(runId);
if (attempts > intRunId) {
AbstractRerunPolicy rerunPolicy = RerunPolicyFactory.getRetryPolicy(policy);
long delayTime = rerunPolicy.getDelay(delay, Integer.parseInt(runId));
RetryEvent event = new RetryEvent(clusterName, wfId,
msgReceivedTime, delayTime, entityType, entityName,
nominalTime, intRunId, attempts, 0, workflowUser);
offerToQueue(event);
} else {
LOG.warn("All retry attempt failed out of configured: "
+ attempts + " attempt for entity instance::"
+ entityName + ":" + nominalTime + " And WorkflowId: "
+ wfId);
GenericAlert.alertRetryFailed(entityType, entityName,
nominalTime, wfId, workflowUser, runId,
"All retry attempt failed out of configured: "
+ attempts + " attempt for entity instance::");
}
} catch (FalconException e) {
LOG.error("Error during retry of entity instance " + entityName + ":" + nominalTime, e);
GenericAlert.alertRetryFailed(entityType, entityName, nominalTime,
wfId, workflowUser, runId, e.getMessage());
}
}
//RESUME CHECKSTYLE CHECK ParameterNumberCheck
@Override
public void init(M aDelayQueue) throws FalconException {
super.init(aDelayQueue);
Thread daemon = new Thread(new RetryConsumer(this));
daemon.setName("RetryHandler");
daemon.setDaemon(true);
daemon.start();
LOG.info("RetryHandler thread started.");
}
}