| /** |
| * 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.usecases; |
| |
| import org.apache.activemq.ActiveMQConnectionFactory; |
| import org.apache.activemq.ActiveMQPrefetchPolicy; |
| import org.apache.activemq.TestSupport; |
| import org.apache.activemq.broker.BrokerService; |
| import org.apache.activemq.broker.region.Queue; |
| import org.apache.activemq.broker.region.policy.PolicyEntry; |
| import org.apache.activemq.broker.region.policy.PolicyMap; |
| import org.apache.activemq.command.ActiveMQQueue; |
| import org.apache.activemq.usage.SystemUsage; |
| import org.apache.activemq.util.DefaultTestAppender; |
| import org.apache.log4j.Appender; |
| import org.apache.log4j.Level; |
| import org.apache.log4j.spi.LoggingEvent; |
| |
| import javax.jms.*; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| public class UsageBlockedDispatchTest extends TestSupport { |
| |
| private static final int MESSAGES_COUNT = 100; |
| private static byte[] buf = new byte[2 * 1024]; |
| private BrokerService broker; |
| |
| protected long messageReceiveTimeout = 4000L; |
| |
| private String connectionUri; |
| |
| @Override |
| public void setUp() throws Exception { |
| |
| broker = createBroker(); |
| broker.setDataDirectory("target" + File.separator + "activemq-data"); |
| broker.setPersistent(true); |
| broker.setUseJmx(true); |
| broker.setAdvisorySupport(false); |
| broker.setDeleteAllMessagesOnStartup(true); |
| |
| SystemUsage sysUsage = broker.getSystemUsage(); |
| sysUsage.getMemoryUsage().setLimit(100*1024); |
| |
| PolicyEntry defaultPolicy = new PolicyEntry(); |
| defaultPolicy.setProducerFlowControl(false); |
| defaultPolicy.setCursorMemoryHighWaterMark(100); |
| defaultPolicy.setMemoryLimit(50*1024); |
| |
| PolicyMap policyMap = new PolicyMap(); |
| policyMap.setDefaultEntry(defaultPolicy); |
| broker.setDestinationPolicy(policyMap); |
| broker.setSystemUsage(sysUsage); |
| |
| broker.addConnector("tcp://localhost:0").setName("Default"); |
| broker.start(); |
| |
| connectionUri = broker.getTransportConnectors().get(0).getPublishableConnectString(); |
| } |
| |
| protected BrokerService createBroker() throws IOException { |
| BrokerService broker = new BrokerService(); |
| setDefaultPersistenceAdapter(broker); |
| return broker; |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| if (broker != null) { |
| broker.stop(); |
| } |
| } |
| |
| public void testFillMemToBlockConsumer() throws Exception { |
| |
| ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(connectionUri); |
| ActiveMQPrefetchPolicy prefetch = new ActiveMQPrefetchPolicy(); |
| prefetch.setTopicPrefetch(10); |
| factory.setPrefetchPolicy(prefetch); |
| |
| final Connection producerConnection = factory.createConnection(); |
| producerConnection.start(); |
| |
| Session producerSession = producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| MessageProducer producer = producerSession.createProducer(null); |
| BytesMessage message = producerSession.createBytesMessage(); |
| message.writeBytes(buf); |
| |
| int numFillers = 4; |
| ArrayList<ActiveMQQueue> fillers = new ArrayList<ActiveMQQueue>(); |
| for (int i=0; i<numFillers; i++) { |
| fillers.add(new ActiveMQQueue("Q" + i)); |
| } |
| |
| // fill cache and consume all memory |
| for (int idx = 0; idx < MESSAGES_COUNT; ++idx) { |
| for (ActiveMQQueue q : fillers) { |
| producer.send(q, message); |
| } |
| } |
| ActiveMQQueue willGetAPage = new ActiveMQQueue("Q" + numFillers++); |
| for (int idx = 0; idx < MESSAGES_COUNT; ++idx) { |
| producer.send(willGetAPage, message); |
| } |
| |
| ActiveMQQueue shouldBeStuckForDispatch = new ActiveMQQueue("Q" + numFillers); |
| for (int idx = 0; idx < MESSAGES_COUNT; ++idx) { |
| producer.send(shouldBeStuckForDispatch, message); |
| } |
| |
| Connection consumerConnection = factory.createConnection(); |
| consumerConnection.start(); |
| |
| Session consumerSession = consumerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| MessageConsumer consumer = consumerSession.createConsumer(willGetAPage); |
| |
| consumer.receive(messageReceiveTimeout); |
| |
| final AtomicBoolean gotExpectedLogEvent = new AtomicBoolean(false); |
| Appender appender = new DefaultTestAppender() { |
| |
| @Override |
| public void doAppend(LoggingEvent event) { |
| if (event.getLevel() == Level.WARN && event.getRenderedMessage().contains("cursor blocked")) { |
| gotExpectedLogEvent.set(true); |
| } |
| } |
| }; |
| |
| try { |
| org.apache.log4j.Logger.getLogger(Queue.class).addAppender(appender); |
| |
| MessageConsumer noDispatchConsumer = consumerSession.createConsumer(shouldBeStuckForDispatch); |
| |
| Message m = noDispatchConsumer.receive(messageReceiveTimeout); |
| assertNull("did not get a message", m); |
| |
| assertTrue("Got the new warning about the blocked cursor", gotExpectedLogEvent.get()); |
| } finally { |
| org.apache.log4j.Logger.getLogger(Queue.class).removeAppender(appender); |
| org.apache.log4j.Logger.getRootLogger().removeAppender(appender); |
| } |
| } |
| } |