[hornetq-commits] JBoss hornetq SVN: r10013 - in trunk/examples/jms: stop-server-failover and 7 other directories.

Author: ataylor Date: 2010-12-08 04:53:15 -0500 (Wed, 08 Dec 2010) New Revision: 10013 Added: trunk/examples/jms/stop-server-failover/ trunk/examples/jms/stop-server-failover/build.bat trunk/examples/jms/stop-server-failover/build.sh trunk/examples/jms/stop-server-failover/build.xml trunk/examples/jms/stop-server-failover/readme.html trunk/examples/jms/stop-server-failover/server0/ trunk/examples/jms/stop-server-failover/server0/client-jndi.properties trunk/examples/jms/stop-server-failover/server0/hornetq-beans.xml trunk/examples/jms/stop-server-failover/server0/hornetq-configuration.xml trunk/examples/jms/stop-server-failover/server0/hornetq-jms.xml trunk/examples/jms/stop-server-failover/server0/hornetq-users.xml trunk/examples/jms/stop-server-failover/server1/ trunk/examples/jms/stop-server-failover/server1/client-jndi.properties trunk/examples/jms/stop-server-failover/server1/hornetq-beans.xml trunk/examples/jms/stop-server-failover/server1/hornetq-configuration.xml trunk/examples/jms/stop-server-failover/server1/hornetq-jms.xml trunk/examples/jms/stop-server-failover/server1/hornetq-users.xml trunk/examples/jms/stop-server-failover/src/ trunk/examples/jms/stop-server-failover/src/org/ trunk/examples/jms/stop-server-failover/src/org/hornetq/ trunk/examples/jms/stop-server-failover/src/org/hornetq/jms/ trunk/examples/jms/stop-server-failover/src/org/hornetq/jms/example/ trunk/examples/jms/stop-server-failover/src/org/hornetq/jms/example/StopServerFailoverExample.java Log: added failover demonstrating forcing failover Added: trunk/examples/jms/stop-server-failover/build.bat =================================================================== --- trunk/examples/jms/stop-server-failover/build.bat (rev 0) +++ trunk/examples/jms/stop-server-failover/build.bat 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,13 @@ +@echo off + +set "OVERRIDE_ANT_HOME=..\..\..\tools\ant" + +if exist "..\..\..\src\bin\build.bat" ( + rem running from TRUNK + call ..\..\..\src\bin\build.bat %* +) else ( + rem running from the distro + call ..\..\..\bin\build.bat %* +) + +set "OVERRIDE_ANT_HOME=" Added: trunk/examples/jms/stop-server-failover/build.sh =================================================================== --- trunk/examples/jms/stop-server-failover/build.sh (rev 0) +++ trunk/examples/jms/stop-server-failover/build.sh 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,15 @@ +#!/bin/sh + +OVERRIDE_ANT_HOME=../../../tools/ant +export OVERRIDE_ANT_HOME + +if [ -f "../../../src/bin/build.sh" ]; then + # running from TRUNK + ../../../src/bin/build.sh "$@" +else + # running from the distro + ../../../bin/build.sh "$@" +fi + + + Property changes on: trunk/examples/jms/stop-server-failover/build.sh ___________________________________________________________________ Name: svn:executable + * Added: trunk/examples/jms/stop-server-failover/build.xml =================================================================== --- trunk/examples/jms/stop-server-failover/build.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/build.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,41 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!-- + ~ Copyright 2009 Red Hat, Inc. + ~ Red Hat 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. + --> + +<!DOCTYPE project [ + <!ENTITY libraries SYSTEM "../../../thirdparty/libraries.ent"> + ]> + +<project default="run" name="HornetQ JMS Non-transaction Failover Example"> + + <import file="../../common/build.xml"/> + + <target name="run" depends="delete-files"> + <antcall target="runExample"> + <param name="example.classname" value="org.hornetq.jms.example.StopServerFailoverExample"/> + <param name="hornetq.example.beans.file" value="server0 server1"/> + </antcall> + </target> + + <target name="runRemote" depends="delete-files"> + <antcall target="runExample"> + <param name="example.classname" value="org.hornetq.jms.example.StopServerFailoverExample"/> + <param name="hornetq.example.runServer" value="false"/> + </antcall> + </target> + + <target name="delete-files" depends="clean"> + <delete file="./server0/KILL_ME"/> + </target> + +</project> Added: trunk/examples/jms/stop-server-failover/readme.html =================================================================== --- trunk/examples/jms/stop-server-failover/readme.html (rev 0) +++ trunk/examples/jms/stop-server-failover/readme.html 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,136 @@ +<html> + <head> + <title>HornetQ JMS Failover Without Transactions Example</title> + <link rel="stylesheet" type="text/css" href="../../common/common.css" /> + <link rel="stylesheet" type="text/css" href="../../common/prettify.css" /> + <script type="text/javascript" src="../../common/prettify.js"></script> + </head> + <body onload="prettyPrint()"> + <h1>JMS Failover Without Transactions Example</h1> + + <p>This example demonstrates two servers coupled as a live-backup pair for high availability (HA), and a client + connection failing over from live to backup when the live server is crashed.</p> + <p>Failover behavior differs wether the JMS session is transacted or not.</p> + <p>When a <em>non-transacted</em> JMS session is used, once and only once delivery is not guaranteed + and it is possible some messages will be lost or delivered twice, depending when the failover to the backup server occurs.</p> + <p>It is up to the client to deal with such cases. To ensure once and only once delivery, the client must + use transacted JMS sessions (as shown in the example for <a href="../transaction-failover/readme.html">failover with transactions</a>).</p> + <p>For more information on HornetQ failover and HA, and clustering in general, please see the clustering + section of the user manual.</p> + + <h2>Example step-by-step</h2> + <p><i>To run the example, simply type <code>./build.sh</code> (or <code>build.bat</code> on windows) from this directory</i></p> + <p>In this example, the live server is server 1, and the backup server is server 0</p> + <p>The connection will initially be created to server1, server 1 will crash, and the client will carry on + seamlessly on server 0, the backup server.</p> + <ol> + <li>Get an initial context for looking up JNDI from server #1.</li> + <pre class="prettyprint"> + initialContext = getContext(1); + </pre> + + <li>Look up the JMS resources from JNDI on server #1.</li> + <pre class="prettyprint"> + Queue queue = (Queue)initialContext.lookup("/queue/exampleQueue"); + ConnectionFactory connectionFactory = (ConnectionFactory)initialContext.lookup("/ConnectionFactory"); + </pre> + + <li>Create a JMS Connection</li> + <pre class="prettyprint"> + connection = connectionFactory.createConnection(); + </pre> + + <li>Create a JMS <em>non-transacted</em> Session with client acknowledgement</li> + <pre class="prettyprint"> + Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE); + </pre> + + <li>Start the connection to ensure delivery occurs</li> + <pre class="prettyprint"> + connection.start(); + </pre> + + <li>Create a JMS MessageProducer and MessageConsumer</li> + <pre class="prettyprint"> + MessageProducer producer = session.createProducer(queue); + MessageConsumer consumer = session.createConsumer(queue); + </pre> + + <li>Send some messages to server #1</li> + <pre class="prettyprint"> + for (int i = 0; i &lt; numMessages; i++) + { + TextMessage message = session.createTextMessage("This is text message " + i); + producer.send(message); + System.out.println("Sent message: " + message.getText()); + } + </pre> + + <li>Receive and acknowledge half of the sent messages</li> + <pre class="prettyprint"> + TextMessage message0 = null; + for (int i = 0; i &lt; numMessages / 2; i++) + { + message0 = (TextMessage)consumer.receive(5000); + System.out.println("Got message: " + message0.getText()); + } + message0.acknowledge(); + </pre> + + <li>Receive the second half of the sent messages but <em>do not acknowledge them yet</em></li> + <pre class="prettyprint"> + for (int i = numMessages / 2; i &lt; numMessages; i++) + { + message0 = (TextMessage)consumer.receive(5000); + System.out.println("Got message: " + message0.getText()); + } + </pre> + + <li>Crash server #1, the live server, and wait a little while to make sure it has really crashed.</li> + <pre class="prettyprint"> + killServer(1); + Thread.sleep(2000); + </pre> + + <li>Acknowledging the second half of the sent messages will fail as failover to the backup server has occured</li> + <pre class="prettyprint"> + try + { + message0.acknowledge(); + } + catch (JMSException e) + { + System.err.println("Got exception while acknowledging message: " + e.getMessage()); + } + </pre> + + <li>Consume again the second half of the messages againg. Note that they are not considered as redelivered</li> + <pre class="prettyprint"> + for (int i = numMessages / 2; i &lt; numMessages; i++) + { + message0 = (TextMessage)consumer.receive(5000); + System.out.printf("Got message: %s (redelivered?: %s)\n", message0.getText(), message0.getJMSRedelivered()); + } + message0.acknowledge(); + </pre> + + <li>And finally, <strong>always</strong> remember to close your resources after use, in a <code>finally</code> block. Closing a JMS connection will automatically close all of its sessions, consumers, producer and browser objects</li> + + <pre class="prettyprint"> + finally + { + if (connection != null) + { + connection.close(); + } + + if (initialContext != null) + { + initialContext.close(); + } + } + </pre> + + </ol> + </body> +</html> Added: trunk/examples/jms/stop-server-failover/server0/client-jndi.properties =================================================================== --- trunk/examples/jms/stop-server-failover/server0/client-jndi.properties (rev 0) +++ trunk/examples/jms/stop-server-failover/server0/client-jndi.properties 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,3 @@ +java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory +java.naming.provider.url=jnp://localhost:1099 +java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces Added: trunk/examples/jms/stop-server-failover/server0/hornetq-beans.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server0/hornetq-beans.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server0/hornetq-beans.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,72 @@ +<?xml version="1.0" encoding="UTF-8"?> + +<!-- + ~ Copyright 2009 Red Hat, Inc. + ~ Red Hat 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. + --> + +<deployment xmlns="urn:jboss:bean-deployer:2.0"> + + <bean name="Naming" class="org.jnp.server.NamingBeanImpl"/> + + <!-- JNDI server. Disable this if you don't want JNDI --> + <bean name="JNDIServer" class="org.jnp.server.Main"> + <property name="namingInfo"> + <inject bean="Naming"/> + </property> + <property name="port">1099</property> + <property name="bindAddress">localhost</property> + <property name="rmiPort">1098</property> + <property name="rmiBindAddress">localhost</property> + </bean> + + <!-- MBean server --> + <bean name="MBeanServer" class="javax.management.MBeanServer"> + <constructor factoryClass="java.lang.management.ManagementFactory" + factoryMethod="getPlatformMBeanServer"/> + </bean> + + <!-- The core configuration --> + <bean name="Configuration" class="org.hornetq.core.config.impl.FileConfiguration"/> + + <!-- The security manager --> + <bean name="HornetQSecurityManager" class="org.hornetq.spi.core.security.HornetQSecurityManagerImpl"> + <start ignored="true"/> + <stop ignored="true"/> + </bean> + + <!-- The core server --> + <bean name="HornetQServer" class="org.hornetq.core.server.impl.HornetQServerImpl"> + <constructor> + <parameter> + <inject bean="Configuration"/> + </parameter> + <parameter> + <inject bean="MBeanServer"/> + </parameter> + <parameter> + <inject bean="HornetQSecurityManager"/> + </parameter> + </constructor> + <start ignored="true"/> + <stop ignored="true"/> + </bean> + + <!-- The JMS server --> + <bean name="JMSServerManager" class="org.hornetq.jms.server.impl.JMSServerManagerImpl"> + <constructor> + <parameter> + <inject bean="HornetQServer"/> + </parameter> + </constructor> + </bean> + +</deployment> Added: trunk/examples/jms/stop-server-failover/server0/hornetq-configuration.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server0/hornetq-configuration.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server0/hornetq-configuration.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,67 @@ +<configuration xmlns="urn:hornetq" + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" + xsi:schemaLocation="urn:hornetq /schema/hornetq-configuration.xsd"> + + <clustered>true</clustered> + + <!--we kill the server process so don't need this set to true--> + <failover-on-shutdown>false</failover-on-shutdown> + + <shared-store>true</shared-store> + + <!-- Connectors --> + + <connectors> + <connector name="netty-connector"> + <factory-class>org.hornetq.core.remoting.impl.netty.NettyConnectorFactory</factory-class> + <param key="port" value="5445"/> + </connector> + </connectors> + + <!-- Acceptors --> + <acceptors> + <acceptor name="netty-acceptor"> + <factory-class>org.hornetq.core.remoting.impl.netty.NettyAcceptorFactory</factory-class> + <param key="port" value="5445"/> + </acceptor> + </acceptors> + + <broadcast-groups> + <broadcast-group name="bg-group1"> + <group-address>231.7.7.7</group-address> + <group-port>9876</group-port> + <broadcast-period>1000</broadcast-period> + <connector-ref>netty-connector</connector-ref> + </broadcast-group> + </broadcast-groups> + + <discovery-groups> + <discovery-group name="dg-group1"> + <group-address>231.7.7.7</group-address> + <group-port>9876</group-port> + <refresh-timeout>60000</refresh-timeout> + </discovery-group> + </discovery-groups> + + <cluster-connections> + <cluster-connection name="my-cluster"> + <address>jms</address> + <connector-ref>netty-connector</connector-ref> + <discovery-group-ref discovery-group-name="dg-group1"/> + </cluster-connection> + </cluster-connections> + <!-- Other config --> + + <security-settings> + <!--security for example queue--> + <security-setting match="jms.queue.exampleQueue"> + <permission type="createDurableQueue" roles="guest"/> + <permission type="deleteDurableQueue" roles="guest"/> + <permission type="createNonDurableQueue" roles="guest"/> + <permission type="deleteNonDurableQueue" roles="guest"/> + <permission type="consume" roles="guest"/> + <permission type="send" roles="guest"/> + </security-setting> + </security-settings> + +</configuration> Added: trunk/examples/jms/stop-server-failover/server0/hornetq-jms.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server0/hornetq-jms.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server0/hornetq-jms.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,32 @@ +<configuration xmlns="urn:hornetq" + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" + xsi:schemaLocation="urn:hornetq /schema/hornetq-jms.xsd"> + <!--the connection factory used by the example--> + <connection-factory name="ConnectionFactory"> + <connectors> + <connector-ref connector-name="netty-connector"/> + </connectors> + + <entries> + <entry name="ConnectionFactory"/> + </entries> + + <ha>true</ha> + <!-- Pause 1 second between connect attempts --> + <retry-interval>1000</retry-interval> + + <!-- Multiply subsequent reconnect pauses by this multiplier. This can be used to + implement an exponential back-off. For our purposes we just set to 1.0 so each reconnect + pause is the same length --> + <retry-interval-multiplier>1.0</retry-interval-multiplier> + + <!-- Try reconnecting an unlimited number of times (-1 means "unlimited") --> + <reconnect-attempts>-1</reconnect-attempts> + </connection-factory> + + <!--the queue used by the example--> + <queue name="exampleQueue"> + <entry name="/queue/exampleQueue"/> + </queue> + +</configuration> Added: trunk/examples/jms/stop-server-failover/server0/hornetq-users.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server0/hornetq-users.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server0/hornetq-users.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,7 @@ +<configuration xmlns="urn:hornetq" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" + xsi:schemaLocation="urn:hornetq /schema/hornetq-users.xsd"> + <!-- the default user. this is used where username is null--> + <defaultuser name="guest" password="guest"> + <role name="guest"/> + </defaultuser> +</configuration> \ No newline at end of file Added: trunk/examples/jms/stop-server-failover/server1/client-jndi.properties =================================================================== --- trunk/examples/jms/stop-server-failover/server1/client-jndi.properties (rev 0) +++ trunk/examples/jms/stop-server-failover/server1/client-jndi.properties 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,3 @@ +java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory +java.naming.provider.url=jnp://localhost:2099 +java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces Added: trunk/examples/jms/stop-server-failover/server1/hornetq-beans.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server1/hornetq-beans.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server1/hornetq-beans.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,72 @@ +<?xml version="1.0" encoding="UTF-8"?> + +<!-- + ~ Copyright 2009 Red Hat, Inc. + ~ Red Hat 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. + --> + +<deployment xmlns="urn:jboss:bean-deployer:2.0"> + + <bean name="Naming" class="org.jnp.server.NamingBeanImpl"/> + + <!-- JNDI server. Disable this if you don't want JNDI --> + <bean name="JNDIServer" class="org.jnp.server.Main"> + <property name="namingInfo"> + <inject bean="Naming"/> + </property> + <property name="port">2099</property> + <property name="bindAddress">localhost</property> + <property name="rmiPort">2098</property> + <property name="rmiBindAddress">localhost</property> + </bean> + + <!-- MBean server --> + <bean name="MBeanServer" class="javax.management.MBeanServer"> + <constructor factoryClass="java.lang.management.ManagementFactory" + factoryMethod="getPlatformMBeanServer"/> + </bean> + + <!-- The core configuration --> + <bean name="Configuration" class="org.hornetq.core.config.impl.FileConfiguration"/> + + <!-- The security manager --> + <bean name="HornetQSecurityManager" class="org.hornetq.spi.core.security.HornetQSecurityManagerImpl"> + <start ignored="true"/> + <stop ignored="true"/> + </bean> + + <!-- The core server --> + <bean name="HornetQServer" class="org.hornetq.core.server.impl.HornetQServerImpl"> + <constructor> + <parameter> + <inject bean="Configuration"/> + </parameter> + <parameter> + <inject bean="MBeanServer"/> + </parameter> + <parameter> + <inject bean="HornetQSecurityManager"/> + </parameter> + </constructor> + <start ignored="true"/> + <stop ignored="true"/> + </bean> + + <!-- The JMS server --> + <bean name="JMSServerManager" class="org.hornetq.jms.server.impl.JMSServerManagerImpl"> + <constructor> + <parameter> + <inject bean="HornetQServer"/> + </parameter> + </constructor> + </bean> + +</deployment> Added: trunk/examples/jms/stop-server-failover/server1/hornetq-configuration.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server1/hornetq-configuration.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server1/hornetq-configuration.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,75 @@ +<configuration xmlns="urn:hornetq" + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" + xsi:schemaLocation="urn:hornetq ../../../src/schema/hornetq-configuration.xsd"> + + <clustered>true</clustered> + + <backup>true</backup> + + <!--we kill the server process so don't need this set to true--> + <failover-on-shutdown>false</failover-on-shutdown> + + <shared-store>true</shared-store> + + <!-- Connectors --> + + <connectors> + <connector name="netty-connector"> + <factory-class>org.hornetq.core.remoting.impl.netty.NettyConnectorFactory</factory-class> + <param key="port" value="5446"/> + </connector> + </connectors> + + <!-- Acceptors --> + <acceptors> + <acceptor name="netty-acceptor"> + <factory-class>org.hornetq.core.remoting.impl.netty.NettyAcceptorFactory</factory-class> + <param key="port" value="5446"/> + </acceptor> + </acceptors> + + <broadcast-groups> + <broadcast-group name="bg-group1"> + <group-address>231.7.7.7</group-address> + <group-port>9876</group-port> + <broadcast-period>1000</broadcast-period> + <connector-ref>netty-connector</connector-ref> + </broadcast-group> + </broadcast-groups> + + <discovery-groups> + <discovery-group name="dg-group1"> + <group-address>231.7.7.7</group-address> + <group-port>9876</group-port> + <refresh-timeout>60000</refresh-timeout> + </discovery-group> + </discovery-groups> + + <cluster-connections> + <cluster-connection name="my-cluster"> + <address>jms</address> + <connector-ref>netty-connector</connector-ref> + <discovery-group-ref discovery-group-name="dg-group1"/> + </cluster-connection> + </cluster-connections> + + <large-messages-directory>../server0/data/large-messages</large-messages-directory> + <bindings-directory>../server0/data/bindings</bindings-directory> + <journal-directory>../server0/data/journal</journal-directory> + <paging-directory>../server0/data/paging</paging-directory> + + <!-- Other config --> + + <security-settings> + <!--security for example queue--> + <security-setting match="jms.queue.exampleQueue"> + <permission type="createDurableQueue" roles="guest"/> + <permission type="deleteDurableQueue" roles="guest"/> + <permission type="createNonDurableQueue" roles="guest"/> + <permission type="deleteNonDurableQueue" roles="guest"/> + <permission type="consume" roles="guest"/> + <permission type="send" roles="guest"/> + </security-setting> + </security-settings> + +</configuration> Added: trunk/examples/jms/stop-server-failover/server1/hornetq-jms.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server1/hornetq-jms.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server1/hornetq-jms.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,32 @@ +<configuration xmlns="urn:hornetq" + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" + xsi:schemaLocation="urn:hornetq /schema/hornetq-jms.xsd"> + <!--the connection factory used by the example--> + <connection-factory name="ConnectionFactory"> + <connectors> + <connector-ref connector-name="netty-connector"/> + </connectors> + + <entries> + <entry name="ConnectionFactory"/> + </entries> + + <ha>true</ha> + <!-- Pause 1 second between connect attempts --> + <retry-interval>1000</retry-interval> + + <!-- Multiply subsequent reconnect pauses by this multiplier. This can be used to + implement an exponential back-off. For our purposes we just set to 1.0 so each reconnect + pause is the same length --> + <retry-interval-multiplier>1.0</retry-interval-multiplier> + + <!-- Try reconnecting an unlimited number of times (-1 means "unlimited") --> + <reconnect-attempts>-1</reconnect-attempts> + </connection-factory> + + <!--the queue used by the example--> + <queue name="exampleQueue"> + <entry name="/queue/exampleQueue"/> + </queue> + +</configuration> Added: trunk/examples/jms/stop-server-failover/server1/hornetq-users.xml =================================================================== --- trunk/examples/jms/stop-server-failover/server1/hornetq-users.xml (rev 0) +++ trunk/examples/jms/stop-server-failover/server1/hornetq-users.xml 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,7 @@ +<configuration xmlns="urn:hornetq" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" + xsi:schemaLocation="urn:hornetq /schema/hornetq-users.xsd"> + <!-- the default user. this is used where username is null--> + <defaultuser name="guest" password="guest"> + <role name="guest"/> + </defaultuser> +</configuration> \ No newline at end of file Added: trunk/examples/jms/stop-server-failover/src/org/hornetq/jms/example/StopServerFailoverExample.java =================================================================== --- trunk/examples/jms/stop-server-failover/src/org/hornetq/jms/example/StopServerFailoverExample.java (rev 0) +++ trunk/examples/jms/stop-server-failover/src/org/hornetq/jms/example/StopServerFailoverExample.java 2010-12-08 09:53:15 UTC (rev 10013) @@ -0,0 +1,131 @@ +/* + * Copyright 2009 Red Hat, Inc. + * Red Hat 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.hornetq.jms.example; + +import org.hornetq.common.example.HornetQExample; + +import javax.jms.*; +import javax.naming.InitialContext; + +/** + * A simple example that demonstrates failover of the JMS connection from one node to another + * when the live server crashes using a JMS <em>non-transacted</em> session. + * + * @author <a href="mailto:jmesnil@redhat.com">Jeff Mesnil</a> + */ +public class StopServerFailoverExample extends HornetQExample +{ + public static void main(final String[] args) + { + new StopServerFailoverExample().run(args); + } + + @Override + public boolean runExample() throws Exception + { + final int numMessages = 10; + + Connection connection = null; + + InitialContext initialContext = null; + + try + { + // Step 1. Get an initial context for looking up JNDI from the server #1 + initialContext = getContext(0); + + // Step 2. Look up the JMS resources from JNDI + Queue queue = (Queue)initialContext.lookup("/queue/exampleQueue"); + ConnectionFactory connectionFactory = (ConnectionFactory)initialContext.lookup("/ConnectionFactory"); + + // Step 3. Create a JMS Connection + connection = connectionFactory.createConnection(); + + // Step 4. Create a *non-transacted* JMS Session with client acknwoledgement + Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE); + + // Step 5. Start the connection to ensure delivery occurs + connection.start(); + + // Step 6. Create a JMS MessageProducer and a MessageConsumer + MessageProducer producer = session.createProducer(queue); + MessageConsumer consumer = session.createConsumer(queue); + + // Step 7. Send some messages to server #1, the live server + for (int i = 0; i < numMessages; i++) + { + TextMessage message = session.createTextMessage("This is text message " + i); + producer.send(message); + System.out.println("Sent message: " + message.getText()); + } + + // Step 8. Receive and acknowledge half of the sent messages + TextMessage message0 = null; + for (int i = 0; i < numMessages / 2; i++) + { + message0 = (TextMessage)consumer.receive(5000); + System.out.println("Got message: " + message0.getText()); + } + message0.acknowledge(); + + // Step 9. Receive the 2nd half of the sent messages but *do not* acknowledge them yet + for (int i = numMessages / 2; i < numMessages; i++) + { + message0 = (TextMessage)consumer.receive(5000); + System.out.println("Got message: " + message0.getText()); + } + + // Step 10. Crash server #1, the live server, and wait a little while to make sure + // it has really crashed + Thread.sleep(2000); + System.out.println("stop the server by logging into jconsole"); + System.in.read(); + + // Step 11. Acknowledging the 2nd half of the sent messages will fail as failover to the + // backup server has occured + try + { + message0.acknowledge(); + } + catch (JMSException e) + { + System.err.println("Got exception while acknowledging message: " + e.getMessage()); + } + + // Step 12. Consume again the 2nd half of the messages again. Note that they are not considered as redelivered. + for (int i = numMessages / 2; i < numMessages; i++) + { + message0 = (TextMessage)consumer.receive(5000); + System.out.printf("Got message: %s (redelivered?: %s)\n", message0.getText(), message0.getJMSRedelivered()); + } + message0.acknowledge(); + + return true; + } + finally + { + // Step 13. Be sure to close our resources! + + if (connection != null) + { + connection.close(); + } + + if (initialContext != null) + { + initialContext.close(); + } + } + } + +}