/**
* 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.workflow;
import org.apache.falcon.entity.ClusterHelper;
import org.apache.falcon.logging.JobLogMover;
import org.apache.falcon.messaging.JMSMessageProducer;
import org.apache.falcon.workflow.util.OozieActionConfigurationHelper;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Utility called by oozie workflow engine post workflow execution in parent workflow.
*/
public class FalconPostProcessing extends Configured implements Tool {
private static final Logger LOG = LoggerFactory.getLogger(FalconPostProcessing.class);
public static void main(String[] args) throws Exception {
Configuration conf = OozieActionConfigurationHelper.createActionConf();
ToolRunner.run(conf, new FalconPostProcessing(), args);
}
@Override
public int run(String[] args) throws Exception {
WorkflowExecutionContext context = WorkflowExecutionContext.create(args,
WorkflowExecutionContext.Type.POST_PROCESSING, getConf());
LOG.info("Post workflow execution context created {}", context);
// serialize the context to HDFS under logs dir before sending the message
context.serialize();
String userBrokerUrl = context.getValue(WorkflowExecutionArgs.USER_BRKR_URL);
boolean userNotificationEnabled = Boolean.parseBoolean(context.
getValue(WorkflowExecutionArgs.USER_JMS_NOTIFICATION_ENABLED, "true"));
if (userBrokerUrl != null && !userBrokerUrl.equals(ClusterHelper.NO_USER_BROKER_URL)
&& userNotificationEnabled) {
LOG.info("Sending user message {} ", context);
invokeUserMessageProducer(context);
}
// JobLogMover doesn't throw exception, a failed log mover will not fail the user workflow
LOG.info("Moving logs {}", context);
new JobLogMover().moveLog(context);
return 0;
}
private void invokeUserMessageProducer(WorkflowExecutionContext context) throws Exception {
JMSMessageProducer jmsMessageProducer = JMSMessageProducer.builder(context)
.type(JMSMessageProducer.MessageType.USER)
.build();
jmsMessageProducer.sendMessage(WorkflowExecutionContext.USER_MESSAGE_ARGS);
}
}