/** use auto acknowledge which automatically has the client say OK */ public void doReceiveAuto() { if (doSetup()) { try { queueConnection = queueConnectionFactory.createQueueConnection(); QueueSession queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); QueueReceiver queueReceiver = queueSession.createReceiver(queue); queueConnection.start(); while (true) { Message m = queueReceiver.receive(1); if (m != null) { if (m instanceof TextMessage) { TextMessage message = (TextMessage) m; log.debug("Reading message:==> " + message.getText()); } else { break; } } } } catch (JMSException e) { log.error("Listen Exception occurred: " + e.toString()); } finally { doCleanup(); } } }
@Test public void noMatchingRoutes() throws JMSException { String expected = "'no matching route'"; QueueReceiver qr = messageManager.createQueueReceiver("queue/DLQ"); clear(qr); plainEvent.fire(expected); Message m = qr.receive(3000); qr.close(); Assert.assertNull("Unexpectedly received a message", m); }
public static Message queueReceiver(QueueConnection cnn, String queueName, long timeout) throws JMSException { QueueSession session = cnn.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); Queue queue = session.createQueue(queueName); QueueReceiver receiver = session.createReceiver(queue); Message msg = receiver.receive(timeout); if (msg != null) msg.acknowledge(); receiver.close(); session.close(); return msg; }
@Test public void forwardSimpleEvent_via_single_route_config() throws JMSException { String expected = "'configured via Route'"; QueueReceiver qr = messageManager.createQueueReceiver("queue/DLQ"); clear(qr); event_viaSingleRouteConfig.fire(expected); Message m = qr.receive(3000); qr.close(); Assert.assertTrue(m != null); Assert.assertTrue(m instanceof TextMessage); Assert.assertEquals(expected, ((TextMessage) m).getText()); }
public static void drainQueue(QueueConnection cnn, String queue) throws Exception { QueueSession session = cnn.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); Queue q = session.createQueue(queue); QueueReceiver receiver = session.createReceiver(q); // Add a delay so that activeMQ can fetch messages from the broker // Thread.sleep(5000); Message msg = null; while ((msg = receiver.receive(1000)) != null) { System.out.println("Removing message: " + msg); msg.acknowledge(); } receiver.close(); session.close(); }
/** * Wait for 'count' messages on controlQueue before continuing. Called by a publisher to make sure * that subscribers have started before it begins publishing messages. * * <p>If controlQueue doesn't exist, the method throws an exception. * * @param prefix prefix (publisher or subscriber) to be displayed * @param controlQueueName name of control queue * @param count number of messages to receive */ public static void receiveSynchronizeMessages(String prefix, String controlQueueName, int count) throws Exception { QueueConnectionFactory queueConnectionFactory = null; QueueConnection queueConnection = null; QueueSession queueSession = null; Queue controlQueue = null; QueueReceiver queueReceiver = null; try { queueConnectionFactory = SampleUtilities.getQueueConnectionFactory(); queueConnection = queueConnectionFactory.createQueueConnection(); queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); controlQueue = getQueue(controlQueueName, queueSession); queueConnection.start(); } catch (Exception e) { System.out.println("Connection problem: " + e.toString()); if (queueConnection != null) { try { queueConnection.close(); } catch (JMSException ee) { } } throw e; } try { System.out.println( prefix + "Receiving synchronize messages from " + controlQueueName + "; count = " + count); queueReceiver = queueSession.createReceiver(controlQueue); while (count > 0) { queueReceiver.receive(); count--; System.out.println(prefix + "Received synchronize message; expect " + count + " more"); } } catch (JMSException e) { System.out.println("Exception occurred: " + e.toString()); throw e; } finally { if (queueConnection != null) { try { queueConnection.close(); } catch (JMSException e) { } } } }
public static void main(String[] args) { try { QueueConnectionFactory queueConnectionFactory; QueueConnection queueConnection; QueueSession queueSession; QueueReceiver queueReceiver; Queue queue; TextMessage msg; // JNDI InitialContextを作成します InitialContext ctx = new InitialContext(); // Connection FactoryとQueueをLook upします queueConnectionFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY); queue = (Queue) ctx.lookup(QUEUE); // コネクションを作成 queueConnection = queueConnectionFactory.createQueueConnection(); // セッションを作成 queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); // キューレシーバーを作成 queueReceiver = queueSession.createReceiver(queue); // メッセージの配送をスタート queueConnection.start(); // メッセージの受信 while (true) { Message m = queueReceiver.receive(1); if (m != null) { if (m instanceof TextMessage) { msg = (TextMessage) m; System.out.println(msg.getText()); } else { break; } } } // 接続を切断 queueReceiver.close(); queueSession.close(); queueConnection.close(); } catch (Exception e) { e.printStackTrace(); } }
/** manually say OK I'm ready to take the message on the client */ public void doReceiveAck() { if (doSetup()) { try { queueConnection = queueConnectionFactory.createQueueConnection(); QueueSession queueSession = queueConnection.createQueueSession(false, Session.CLIENT_ACKNOWLEDGE); QueueReceiver queueReceiver = queueSession.createReceiver(queue); queueConnection.start(); String info = null; while (true) { Message m = queueReceiver.receive(1); if (m != null) { if (m instanceof TextMessage) { TextMessage message = (TextMessage) m; info = message.getText(); if (info.indexOf("12") > -1) { log.debug("Skipping message:==> " + message.getText()); } else { log.debug("Reading message:==> " + message.getText()); message.acknowledge(); } } else { break; } } } } catch (JMSException e) { log.error("Listen Exception occurred: " + e.toString()); } finally { doCleanup(); } } }