Adding example of usage for activemq-cpp - will be displayed on the wiki

git-svn-id: https://svn.apache.org/repos/asf/incubator/activemq/trunk@419587 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nathan Christopher Mittler 2006-07-06 15:41:15 +00:00
parent a48afebe70
commit ec77ecd315
1 changed files with 243 additions and 0 deletions

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// START SNIPPET: demo
#include <activemq/concurrent/Thread.h>
#include <activemq/concurrent/Runnable.h>
#include <activemq/core/ActiveMQConnectionFactory.h>
#include <cms/Connection.h>
#include <cms/Session.h>
#include <cms/TextMessage.h>
#include <cms/ExceptionListener.h>
#include <cms/MessageListener.h>
#include <stdlib.h>
using namespace activemq::core;
using namespace activemq::concurrent;
using namespace cms;
using namespace std;
class HelloWorldProducer : public Runnable {
private:
Connection* connection;
Session* session;
Destination* destination;
MessageProducer* producer;
int numMessages;
public:
HelloWorldProducer( int numMessages ){
connection = NULL;
session = NULL;
destination = NULL;
producer = NULL;
this->numMessages = numMessages;
}
virtual ~HelloWorldProducer(){
cleanup();
}
virtual void run() {
try {
// Create a ConnectionFactory
ActiveMQConnectionFactory* connectionFactory = new ActiveMQConnectionFactory("127.0.0.1:61613");
// Create a Connection
connection = connectionFactory->createConnection();
connection->start();
// Create a Session
session = connection->createSession( Session::AutoAcknowledge );
// Create the destination (Topic or Queue)
destination = session->createQueue("TEST.FOO");
// Create a MessageProducer from the Session to the Topic or Queue
producer = session->createProducer(*destination);
producer->setDeliveryMode( Message::NONPERSISTANT);
// Stringify the thread id
char threadIdStr[100];
itoa( Thread::getId(), threadIdStr, 10 );
// Create a messages
string text = (string)"Hello world! from thread " + threadIdStr;
for( int ix=0; ix<numMessages; ++ix ){
TextMessage* message = session->createTextMessage( text );
// Tell the producer to send the message
printf( "Sent message from thread %s\n", threadIdStr );
producer->send(*message);
delete message;
}
}catch (CMSException& e) {
e.printStackTrace();
}
}
private:
void cleanup(){
// Close open resources.
try{
if( session != NULL ) session->close();
if( connection != NULL ) connection->close();
}catch (CMSException& e) {}
// Destroy resources.
try{
if( destination != NULL ) delete destination;
}catch (CMSException& e) {}
destination = NULL;
try{
if( producer != NULL ) delete producer;
}catch (CMSException& e) {}
producer = NULL;
try{
if( session != NULL ) delete session;
}catch (CMSException& e) {}
session = NULL;
try{
if( connection != NULL ) delete connection;
}catch (CMSException& e) {}
connection = NULL;
}
};
class HelloWorldConsumer : public ExceptionListener,
public MessageListener,
public Runnable {
private:
Connection* connection;
Session* session;
Destination* destination;
MessageConsumer* consumer;
long waitMillis;
public:
HelloWorldConsumer( long waitMillis ){
connection = NULL;
session = NULL;
destination = NULL;
consumer = NULL;
this->waitMillis = waitMillis;
}
virtual ~HelloWorldConsumer(){
cleanup();
}
virtual void run() {
try {
// Create a ConnectionFactory
ActiveMQConnectionFactory* connectionFactory = new ActiveMQConnectionFactory("127.0.0.1:61613");
// Create a Connection
connection = connectionFactory->createConnection();
delete connectionFactory;
connection->start();
connection->setExceptionListener(this);
// Create a Session
session = connection->createSession( Session::AutoAcknowledge );
// Create the destination (Topic or Queue)
destination = session->createQueue("TEST.FOO");
// Create a MessageConsumer from the Session to the Topic or Queue
consumer = session->createConsumer(*destination);
consumer->setMessageListener( this );
// Sleep while asynchronous messages come in.
Thread::sleep( waitMillis );
} catch (CMSException& e) {
e.printStackTrace();
}
}
virtual void onMessage( const Message& message ){
try
{
const TextMessage& textMessage = dynamic_cast<const TextMessage&>(message);
string text = textMessage.getText();
printf( "Received: %s\n", text.c_str() );
}
catch( std::bad_cast& ex )
{
printf( "Received something other than a text Message\n" );
}
}
virtual void onException( const CMSException& ex ) {
printf("JMS Exception occured. Shutting down client.\n");
}
private:
void cleanup(){
// Close open resources.
try{
if( session != NULL ) session->close();
if( connection != NULL ) connection->close();
}catch (CMSException& e) {}
// Destroy resources.
try{
if( destination != NULL ) delete destination;
}catch (CMSException& e) {}
destination = NULL;
try{
if( consumer != NULL ) delete consumer;
}catch (CMSException& e) {}
consumer = NULL;
try{
if( session != NULL ) delete session;
}catch (CMSException& e) {}
session = NULL;
try{
if( connection != NULL ) delete connection;
}catch (CMSException& e) {}
connection = NULL;
}
};
void main(int argc, char* argv[]) {
HelloWorldProducer producer( 1000 );
HelloWorldConsumer consumer( 5000 );
// Start the consumer thread.
Thread consumerThread( &consumer );
consumerThread.start();
// Start the producer thread.
Thread producerThread( &producer );
producerThread.start();
// Wait for the threads to complete.
producerThread.join();
consumerThread.join();
}
// END SNIPPET: demo