如何在 HornetQ 2.2.5 核心客户端中持久化队列? [英] How to make a queue persisted in HornetQ 2.2.5 core client?
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问题描述
我想在核心 hornetQ 客户端中创建持久队列.问题是当我停止服务器时,队列和数据将被破坏.如何使队列持久化?我的代码是:
I want to make persisted queue in core hornetQ client. The problem is when I stop the server the queue and the data will be destroyed. How to make a queue persisted? My code is:
import java.util.Date;
import org.hornetq.api.core.TransportConfiguration;
import org.hornetq.api.core.client.ClientConsumer;
import org.hornetq.api.core.client.ClientMessage;
import org.hornetq.api.core.client.ClientProducer;
import org.hornetq.api.core.client.ClientSession;
import org.hornetq.api.core.client.ClientSessionFactory;
import org.hornetq.api.core.client.HornetQClient;
import org.hornetq.api.core.client.ServerLocator;
import org.hornetq.core.config.Configuration;
import org.hornetq.core.config.impl.ConfigurationImpl;
import org.hornetq.core.remoting.impl.invm.InVMAcceptorFactory;
import org.hornetq.core.remoting.impl.invm.InVMConnectorFactory;
import org.hornetq.core.server.HornetQServer;
import org.hornetq.core.server.HornetQServers;
public class EmbeddedExample
{
public static void main(final String[] args)
{
try
{
// Step 1. Create the Configuration, and set the properties accordingly
Configuration configuration = new ConfigurationImpl();
configuration.setPersistenceEnabled(false);
configuration.setSecurityEnabled(false);
configuration.getAcceptorConfigurations().add(new TransportConfiguration(InVMAcceptorFactory.class.getName()));
// Step 2. Create and start the server
HornetQServer server = HornetQServers.newHornetQServer(configuration);
server.start();
// Step 3. As we are not using a JNDI environment we instantiate the objects directly
ServerLocator serverLocator = HornetQClient.createServerLocatorWithoutHA(new TransportConfiguration(InVMConnectorFactory.class.getName()));
ClientSessionFactory sf = serverLocator.createSessionFactory();
// Step 4. Create a core queue
ClientSession coreSession = sf.createSession(false, false, false);
final String queueName = "queue.exampleQueue";
coreSession.createQueue(queueName, queueName, true);
coreSession.close();
ClientSession session = null;
try
{
// Step 5. Create the session, and producer
session = sf.createSession();
ClientProducer producer = session.createProducer(queueName);
// Step 6. Create and send a message
ClientMessage message = session.createMessage(true);
final String propName = "myprop";
message.putStringProperty(propName, "Hello sent at " + new Date());
System.out.println("Producer:");
System.out.println("StartDate: "+new Date());
for (int i = 0; i < 100000; i++)
{
message = session.createMessage(true); // move it
message.putStringProperty(propName, "Message: " + i);
producer.send(message);
}
System.out.println("EndDate: "+new Date());
// Step 7. Create the message consumer and start the connection
ClientConsumer messageConsumer = session.createConsumer(queueName);
session.start();
// Step 8. Receive the message.
System.out.println("Consumer:");
System.out.println("StartDate: "+new Date());
//for (int i = 0; i <= 100000; i++)
int i=0;
while(true)
{
i++;
if(i == 10000){
i=0;
session.start();
System.out.println("EndDate: "+new Date());
}
ClientMessage messageReceived = messageConsumer.receive(5000);
if (messageReceived!=null) messageReceived.acknowledge();
//System.out.println(messageReceived.getStringProperty(propName));
}
}
finally
{
// Step 9. Be sure to close our resources!
if (sf != null)
{
sf.close();
}
// Step 10. Stop the server
server.stop();
}
}
catch (Exception e)
{
e.printStackTrace();
System.exit(-1);
}
}
}
推荐答案
如果禁用持久性,则不会有持久性:
If you disable persistence, you won't have persistence:
Configuration configuration = new ConfigurationImpl();
configuration.setPersistenceEnabled(true); <<<< Make this true
UnsatisfiedLinkError 可能是因为您选择了 AIO,并且在 LD_LIBRARY_PATH 上没有本机库,要么设置了 Journal,要么使本机库在 Linux 系统中可用.
The UnsatisfiedLinkError is probably because you select AIO and didn't have the native library on the LD_LIBRARY_PATH, either set Journal or make the native library available in a Linux system.
configuration.setJournalType(JournalType.NIO);
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