Java tutorial
/** * 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.messaging; import org.apache.activemq.ActiveMQConnectionFactory; import org.apache.activemq.broker.BrokerService; import org.apache.falcon.workflow.WorkflowExecutionArgs; import org.apache.falcon.workflow.WorkflowExecutionContext; import org.apache.commons.lang3.StringUtils; import org.testng.Assert; import org.testng.annotations.AfterClass; import org.testng.annotations.BeforeClass; import org.testng.annotations.Test; import javax.jms.Connection; import javax.jms.ConnectionFactory; import javax.jms.Destination; import javax.jms.JMSException; import javax.jms.MapMessage; import javax.jms.MessageConsumer; import javax.jms.Session; import java.util.concurrent.CountDownLatch; /** * Test for process message producer. */ public class ProcessProducerTest { private String[] args; private static final String BROKER_URL = "vm://localhost?broker.useJmx=false&broker.persistent=true"; private static final String BROKER_IMPL_CLASS = "org.apache.activemq.ActiveMQConnectionFactory"; private static final String ENTITY_NAME = "process1"; private BrokerService broker; private volatile AssertionError error; private CountDownLatch latch = new CountDownLatch(1); private String[] outputFeedNames = { "click-logs", "raw-logs" }; private String[] outputFeedPaths = { "/click-logs/10/05/05/00/20", "/raw-logs/10/05/05/00/20" }; @BeforeClass public void setup() throws Exception { args = new String[] { "-" + WorkflowExecutionArgs.ENTITY_NAME.getName(), ENTITY_NAME, "-" + WorkflowExecutionArgs.OUTPUT_FEED_NAMES.getName(), StringUtils.join(outputFeedNames, ","), "-" + WorkflowExecutionArgs.OUTPUT_FEED_PATHS.getName(), StringUtils.join(outputFeedPaths, ","), "-" + WorkflowExecutionArgs.WORKFLOW_ID.getName(), "workflow-01-00", "-" + WorkflowExecutionArgs.WORKFLOW_USER.getName(), "falcon", "-" + WorkflowExecutionArgs.RUN_ID.getName(), "1", "-" + WorkflowExecutionArgs.NOMINAL_TIME.getName(), "2011-01-01-01-00", "-" + WorkflowExecutionArgs.TIMESTAMP.getName(), "2012-01-01-01-00", "-" + WorkflowExecutionArgs.BRKR_URL.getName(), BROKER_URL, "-" + WorkflowExecutionArgs.BRKR_IMPL_CLASS.getName(), BROKER_IMPL_CLASS, "-" + WorkflowExecutionArgs.USER_BRKR_URL.getName(), BROKER_URL, "-" + WorkflowExecutionArgs.USER_BRKR_IMPL_CLASS.getName(), BROKER_IMPL_CLASS, "-" + WorkflowExecutionArgs.ENTITY_TYPE.getName(), "process", "-" + WorkflowExecutionArgs.OPERATION.getName(), "GENERATE", "-" + WorkflowExecutionArgs.LOG_FILE.getName(), "/logFile", "-" + WorkflowExecutionArgs.LOG_DIR.getName(), "/falcon/feed/agg-logs/", "-" + WorkflowExecutionArgs.STATUS.getName(), "SUCCEEDED", "-" + WorkflowExecutionArgs.BRKR_TTL.getName(), "10", "-" + WorkflowExecutionArgs.CLUSTER_NAME.getName(), "corp", }; broker = new BrokerService(); broker.addConnector(BROKER_URL); broker.setDataDirectory("target/activemq"); broker.setBrokerName("localhost"); broker.setSchedulerSupport(true); broker.start(); } @AfterClass public void tearDown() throws Exception { broker.deleteAllMessages(); broker.stop(); } @Test public void testProcessMessageCreator() throws Exception { Thread t = new Thread() { @Override public void run() { try { consumer(); } catch (AssertionError e) { error = e; } catch (JMSException ignore) { error = null; } } }; t.start(); latch.await(); WorkflowExecutionContext context = WorkflowExecutionContext.create(args, WorkflowExecutionContext.Type.POST_PROCESSING); JMSMessageProducer jmsMessageProducer = JMSMessageProducer.builder(context) .type(JMSMessageProducer.MessageType.USER).build(); jmsMessageProducer.sendMessage(); t.join(); if (error != null) { throw error; } } private void consumer() throws JMSException { ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(BROKER_URL); Connection connection = connectionFactory.createConnection(); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); Destination destination = session.createTopic(getTopicName()); MessageConsumer consumer = session.createConsumer(destination); latch.countDown(); for (int index = 0; index < outputFeedNames.length; ++index) { MapMessage m = (MapMessage) consumer.receive(); System.out.println("Consumed: " + m.toString()); assertMessage(m); Assert.assertEquals(m.getString(WorkflowExecutionArgs.OUTPUT_FEED_NAMES.getName()), outputFeedNames[index]); Assert.assertEquals(m.getString(WorkflowExecutionArgs.OUTPUT_FEED_PATHS.getName()), outputFeedPaths[index]); } connection.close(); } private String getTopicName() { return JMSMessageProducer.FALCON_TOPIC_PREFIX + ENTITY_NAME; } private void assertMessage(MapMessage m) throws JMSException { Assert.assertEquals(m.getString(WorkflowExecutionArgs.ENTITY_NAME.getName()), ENTITY_NAME); Assert.assertEquals(m.getString(WorkflowExecutionArgs.WORKFLOW_ID.getName()), "workflow-01-00"); Assert.assertEquals(m.getString(WorkflowExecutionArgs.WORKFLOW_USER.getName()), "falcon"); Assert.assertEquals(m.getString(WorkflowExecutionArgs.RUN_ID.getName()), "1"); Assert.assertEquals(m.getString(WorkflowExecutionArgs.NOMINAL_TIME.getName()), "2011-01-01-01-00"); Assert.assertEquals(m.getString(WorkflowExecutionArgs.TIMESTAMP.getName()), "2012-01-01-01-00"); Assert.assertEquals(m.getString(WorkflowExecutionArgs.STATUS.getName()), "SUCCEEDED"); } }