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.activemq.camel; import java.sql.ResultSet; import java.sql.SQLException; import javax.jms.Connection; import javax.jms.Message; import javax.jms.MessageConsumer; import javax.jms.MessageProducer; import javax.jms.Session; import javax.jms.TextMessage; import javax.transaction.TransactionManager; import org.apache.activemq.ActiveMQConnectionFactory; import org.apache.activemq.broker.BrokerService; import org.apache.activemq.broker.region.policy.SharedDeadLetterStrategy; import org.apache.activemq.command.ActiveMQQueue; import org.apache.activemq.util.Wait; import org.apache.camel.Exchange; import org.apache.camel.component.jms.JmsMessage; import org.apache.camel.test.spring.CamelSpringTestSupport; import org.apache.commons.dbcp2.BasicDataSource; import org.junit.Test; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.context.support.AbstractXmlApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.transaction.jta.JtaTransactionManager; /** * shows rollback and redelivery dlq respected with external tm */ public class JmsJdbcXARollbackTest extends CamelSpringTestSupport { private static final Logger LOG = LoggerFactory.getLogger(JmsJdbcXARollbackTest.class); BrokerService broker = null; int messageCount; public java.sql.Connection initDb() throws Exception { String createStatement = "CREATE TABLE SCP_INPUT_MESSAGES (" + "id int NOT NULL GENERATED ALWAYS AS IDENTITY, " + "messageId varchar(96) NOT NULL, " + "messageCorrelationId varchar(96) NOT NULL, " + "messageContent varchar(2048) NOT NULL, " + "PRIMARY KEY (id) )"; java.sql.Connection conn = getJDBCConnection(); try { conn.createStatement().execute(createStatement); } catch (SQLException alreadyExists) { log.info("ex on create tables", alreadyExists); } try { conn.createStatement().execute("DELETE FROM SCP_INPUT_MESSAGES"); } catch (SQLException ex) { log.info("ex on create delete all", ex); } return conn; } private java.sql.Connection getJDBCConnection() throws Exception { BasicDataSource dataSource = getMandatoryBean(BasicDataSource.class, "managedDataSourceWithRecovery"); return dataSource.getConnection(); } private int dumpDb(java.sql.Connection jdbcConn) throws Exception { int count = 0; ResultSet resultSet = jdbcConn.createStatement().executeQuery("SELECT * FROM SCP_INPUT_MESSAGES"); while (resultSet.next()) { count++; log.info("message - seq:" + resultSet.getInt(1) + ", id: " + resultSet.getString(2) + ", corr: " + resultSet.getString(3) + ", content: " + resultSet.getString(4)); } return count; } @Test public void testConsumeRollback() throws Exception { java.sql.Connection jdbcConn = initDb(); initTMRef(); sendJMSMessageToKickOffRoute(); // should go to dlq eventually Wait.waitFor(new Wait.Condition() { @Override public boolean isSatisified() throws Exception { return consumedFrom(SharedDeadLetterStrategy.DEFAULT_DEAD_LETTER_QUEUE_NAME); } }); assertEquals("message in db, commit to db worked", 0, dumpDb(jdbcConn)); assertFalse("Nothing to to out q", consumedFrom("scp_transacted_out")); } private boolean consumedFrom(String qName) throws Exception { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("vm://testXA"); factory.setWatchTopicAdvisories(false); Connection connection = factory.createConnection(); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); MessageConsumer consumer = session.createConsumer(new ActiveMQQueue(qName)); Message message = consumer.receive(500); LOG.info("Got from queue:{} {}", qName, message); connection.close(); return message != null; } static TransactionManager[] transactionManager = new TransactionManager[1]; private void initTMRef() { transactionManager[0] = getMandatoryBean(JtaTransactionManager.class, "jtaTransactionManager") .getTransactionManager(); } private void sendJMSMessageToKickOffRoute() throws Exception { ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("vm://testXA"); factory.setWatchTopicAdvisories(false); Connection connection = factory.createConnection(); connection.start(); Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); MessageProducer producer = session.createProducer(new ActiveMQQueue("scp_transacted")); TextMessage message = session.createTextMessage("Some Text, messageCount:" + messageCount++); message.setJMSCorrelationID("pleaseCorrelate"); producer.send(message); connection.close(); } private BrokerService createBroker(boolean deleteAllMessages) throws Exception { BrokerService brokerService = new BrokerService(); brokerService.setDeleteAllMessagesOnStartup(deleteAllMessages); brokerService.setBrokerName("testXA"); brokerService.setAdvisorySupport(false); brokerService.setUseJmx(false); brokerService.setDataDirectory("target/data"); brokerService.addConnector("tcp://0.0.0.0:61616"); return brokerService; } @SuppressWarnings("unchecked") @Override protected AbstractXmlApplicationContext createApplicationContext() { deleteDirectory("target/data/howl"); // make broker available to recovery processing on app context start try { broker = createBroker(true); broker.start(); } catch (Exception e) { throw new RuntimeException("Failed to start broker", e); } return new ClassPathXmlApplicationContext("org/apache/activemq/camel/jmsXajdbcRollback.xml"); } public static class MarkRollbackOnly { public String enrich(Exchange exchange) throws Exception { LOG.info("Got exchange: " + exchange); LOG.info("Got message: " + ((JmsMessage) exchange.getIn()).getJmsMessage()); LOG.info("Current tx: " + transactionManager[0].getTransaction()); LOG.info("Marking rollback only..."); transactionManager[0].getTransaction().setRollbackOnly(); return "Some Text"; } } }