HornetQ connecting to a JMS server - jms

Question

I am currently trying to create a JMS client for a JMS Server both using HornetQ. I did not code the server and I don't know much about hoy it works, I only know how to connect to it: no username, no password and the address is jnp://x.y.z.t:1099 .
I am trying to connect to the server without using JNDI and I am having some trouble. In fact I have found this example: http://anonsvn.jboss.org/repos/hornetq/trunk/examples/jms/instantiate-connection-factory/
and I don't know what do I need to change in the XML files and in the code to make it work.
I had this code, with JNDI:
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A simple polymorphic JMS producer which can work with Queues or Topics which
* uses JNDI to lookup the JMS connection factory and destination
*
*
*/
public final class SimpleProducer {
private static final Logger LOG = LoggerFactory.getLogger(SimpleProducer.class);
private SimpleProducer() {
}
/**
* #param args the destination name to send to and optionally, the number of
* messages to send
*/
public static void main(String[] args) {
Context jndiContext = null;
ConnectionFactory connectionFactory = null;
Connection connection = null;
Session session = null;
Destination destination = null;
MessageProducer producer = null;
String destinationName = null;
final int numMsgs;
if ((args.length < 1) || (args.length > 2)) {
LOG.info("Usage: java SimpleProducer <destination-name> [<number-of-messages>]");
System.exit(1);
}
destinationName = args[0];
LOG.info("Destination name is " + destinationName);
if (args.length == 2) {
numMsgs = (new Integer(args[1])).intValue();
} else {
numMsgs = 1;
}
/*
* Create a JNDI API InitialContext object
*/
try {
jndiContext = new InitialContext();
} catch (NamingException e) {
LOG.info("Could not create JNDI API context: " + e.toString());
System.exit(1);
}
/*
* Look up connection factory and destination.
*/
try {
connectionFactory = (ConnectionFactory)jndiContext.lookup("ConnectionFactory");
destination = (Destination)jndiContext.lookup(destinationName);
} catch (NamingException e) {
LOG.info("JNDI API lookup failed: " + e);
System.exit(1);
}
/*
* Create connection. Create session from connection; false means
* session is not transacted. Create sender and text message. Send
* messages, varying text slightly. Send end-of-messages message.
* Finally, close connection.
*/
try {
connection = connectionFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
producer = session.createProducer(destination);
TextMessage message = session.createTextMessage();
for (int i = 0; i < numMsgs; i++) {
message.setText("This is message " + (i + 1));
LOG.info("Sending message: " + message.getText());
producer.send(message);
}
/*
* Send a non-text control message indicating end of messages.
*/
producer.send(session.createMessage());
} catch (JMSException e) {
LOG.info("Exception occurred: " + e);
} finally {
if (connection != null) {
try {
connection.close();
} catch (JMSException e) {
}
}
}
}
}
with this jndi.properties file:
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url = jnp://x.y.z.t:1099
and everything worked fine. But now I need to do the same thing without JNDI.
The example I gave above (http://anonsvn.jboss.org/repos/hornetq/trunk/examples/jms/instantiate-connection-factory/) shoutd work, but I don't know what to change in the config to make it work, I have never used a JMS client this way, so I'm completelly lost!
These are the config files I'm talking about:
http://anonsvn.jboss.org/repos/hornetq/trunk/examples/jms/instantiate-connection-factory/server0/ . I coulnd't find on the net to what the files correpsond, I'm confused.
Also, the Java code is here:
http://anonsvn.jboss.org/repos/hornetq/trunk/examples/jms/instantiate-connection-factory/src/org/hornetq/jms/example/InstantiateConnectionFactoryExample.java
Thank you in advance
----- EDIT
This is the last vesion of my code:
import java.util.HashMap;
import java.util.Map;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.hornetq.api.core.TransportConfiguration;
import org.hornetq.api.jms.HornetQJMSClient;
import org.hornetq.api.jms.JMSFactoryType;
import org.hornetq.common.example.HornetQExample;
import org.hornetq.core.remoting.impl.netty.NettyConnectorFactory;
import org.hornetq.core.remoting.impl.netty.TransportConstants;
import org.hornetq.jms.client.HornetQConnectionFactory;
public class Snippet extends HornetQExample
{
public static void main(final String[] args)
{
new Snippet().run(args);
}
#Override
public boolean runExample() throws Exception
{
Connection connection = null;
try
{
// Step 1. Directly instantiate the JMS Queue object.
Queue queue = HornetQJMSClient.createQueue("exampleQueue");
// Step 2. Instantiate the TransportConfiguration object which contains the knowledge of what transport to use,
// The server port etc.
Map<String, Object> connectionParams = new HashMap<String, Object>();
connectionParams.put(TransportConstants.PORT_PROP_NAME, 5446);
//My server's port:
//connectionParams.put(TransportConstants.PORT_PROP_NAME, 1099);
TransportConfiguration transportConfiguration = new TransportConfiguration(NettyConnectorFactory.class.getName(),
connectionParams);
// Step 3 Directly instantiate the JMS ConnectionFactory object using that TransportConfiguration
HornetQConnectionFactory cf = HornetQJMSClient.createConnectionFactoryWithoutHA(JMSFactoryType.CF, transportConfiguration);
// Step 4.Create a JMS Connection
connection = cf.createConnection();
// Step 5. Create a JMS Session
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
// Step 6. Create a JMS Message Producer
MessageProducer producer = session.createProducer(queue);
// Step 7. Create a Text Message
TextMessage message = session.createTextMessage("This is a text message");
System.out.println("Sent message: " + message.getText());
// Step 8. Send the Message
producer.send(message);
// Step 9. Create a JMS Message Consumer
MessageConsumer messageConsumer = session.createConsumer(queue);
// Step 10. Start the Connection
connection.start();
// Step 11. Receive the message
TextMessage messageReceived = (TextMessage)messageConsumer.receive(5000);
System.out.println("Received message: " + messageReceived.getText());
return true;
}
finally
{
if (connection != null)
{
connection.close();
}
}
}
}
This is my hornetq-beans.xml (I disable JNDI)
<?xml version="1.0" encoding="UTF-8"?>
<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="bindAddress">jnp://X.Y.Z.T</property>
<property name="rmiPort">1098</property>
<!-- <property name="rmiBindAddress">localhost</property>
<property name="bindAddress">jnp://X.Y.Z.T</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>
and my hornetq-jms.xml (same as in the example)
<configuration xmlns="urn:hornetq"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:hornetq /schema/hornetq-jms.xsd">
<!--the queue used by the example-->
<queue name="exampleQueue">
<entry name="/queue/exampleQueue"/>
</queue>
</configuration>
hornetq-users.xml (There is no need to have users to connect to the JMS server, so I commented it):
<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>
My hornetq-configuratio.xml: I am not sur whether I have to put jnp:// in the connectors and acceptors or not. Actually I don't really get much of this....
<configuration xmlns="urn:hornetq"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:hornetq /schema/hornetq-configuration.xsd">
<!-- Connectors -->
<connectors>
<connector name="netty-connector">
<factory-class>org.hornetq.core.remoting.impl.netty.NettyConnectorFactory</factory-class>
<param key="host" value="jnp://X.Y.Z.T"/>
<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="host" value="jnp://X.Y.Z.T"/>
<param key="port" value="5445"/>
</acceptor>
</acceptors>
<!-- 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>
What I get with this code is:
HornetQException[errorCode=2 message=Cannot connect to server(s). Tried with all available servers.]
at org.hornetq.core.client.impl.ServerLocatorImpl.createSessionFactory(ServerLocatorImpl.java:619)
at org.hornetq.jms.client.HornetQConnectionFactory.createConnectionInternal(HornetQConnectionFactory.java:601)
I am using version 2.2.2, by the way ;)

Answer 1

If you want to use HornetQ's native client, look at these documents
http://docs.jboss.org/hornetq/2.2.2.Final/user-manual/en/html_single/#d0e1611
This will likely also help, with direct connections
http://docs.jboss.org/hornetq/2.2.2.Final/user-manual/en/html_single/#d0e2387
You'll want to use their local core client examples.