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RabbitMQ Java Consumer app best practice for Ubuntu linux deployment

I'm studing how RabbitMQ works with Java, it is almost clear how Producer works and how to implement the Consumer, but I'm still not sure how to deploy the Consumer application to server with a correct threading handling.
Let's say I have a web-application that has to sent some transaction email as producer, this application will push in the queue the messages and it is managed by a container, like Tomcat, that increase/descrease threads to serve multiple requests.
What is the best practice to deployt the consumer application?
I have read many tutorials and the RabbitMQ commands are well explained, usually this is the code (from official RabbitMq Hello World):
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DeliverCallback;
import java.nio.charset.StandardCharsets;
public class Recv {
private final static String QUEUE_NAME = "hello";
public static void main(String[] argv) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
DeliverCallback deliverCallback = (consumerTag, delivery) -> {
String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
System.out.println(" [x] Received '" + message + "'");
};
channel.basicConsume(QUEUE_NAME, true, deliverCallback, consumerTag -> { });
}
}
However it is not clear to me how I should run this application in my server (sure I can start it by command line!) and how am I sure the process will not crash for some reason?
Should I put the channel opening commands in a loop inside a try/catch to be sure it will not exit?
Am I'm in charge of handling thread pool opening/increasing?
Does exists something for this purpose?

MQ - Get Multi Instance MQ Manager Connection List

In a Java client app we are connecting to a multi-instance MQ Manager as follows:
java.net.URL ccdt = new URL("file:./config/qmgrs/MQMGR/AMQCLCHL.TAB");
MQQueueManager mqQueueManager = new MQQueueManager("*MQMGR", ccdt);
We can then for example enquire about the current depth of a queue as follows:
int openOptions = CMQC.MQOO_INQUIRE;
MQQueue mqQueue = mqQueueManager.accessQueue("A.QUEUE.NAME", openOptions);
System.out.println("queue depth:" + mqQueue.getCurrentDepth());
Question is, using the same MQQueueManager object, how can we get the list of multi-instance MQ Managers' addresses and ports. Or any other info about the manager itself...
We can see there is the following sort of thing available:
String nameList = mqQueueManager.getAttributeString(MQConstants.MQCA_NAMELIST_NAME, MQConstants.MQ_NAMELIST_NAME_LENGTH);
But when we call the above command, we get:
com.ibm.mq.MQException: MQJE001: Completion Code '2', Reason '2067'.
We are not sure if this is because the client code is not configured correctly or, if it is because the connection that we are using does not have sufficient permissions to get information about the manager?

You will have to use MQ PCF classes to query queue manager attributes. There is sample PCF_WalkThroughQueueManagerAttributes.java shipped with MQ that displays all attributes of queue manager. Here is small sample that lists local queues of a queue manager.
private void runPCFTest() {
try {
PCFAgent agent = new PCFAgent(connect());
PCFParameter[] parameters = { new MQCFST (MQConstants.MQCA_Q_NAME, "*"),
new MQCFIN (MQConstants.MQIA_Q_TYPE, MQConstants.MQQT_LOCAL)};
MQMessage[] responses = agent.send(CMQCFC.MQCMD_INQUIRE_Q_NAMES, parameters);
MQCFH cfh = new MQCFH(responses[0]);
for (int i = 0; i < cfh.getParameterCount(); i++) {
System.out.println (PCFParameter.nextParameter (responses [0]));
}
}catch(Exception ex) {
System.out.println(ex);
}
}
#SuppressWarnings({ "unchecked", "rawtypes" })
private MQQueueManager connect() throws MQException {
Hashtable props = new Hashtable();
props.put(MQConstants.HOST_NAME_PROPERTY, "localhost");
props.put(MQConstants.PORT_PROPERTY, 1414);
props.put(MQConstants.CHANNEL_PROPERTY, "MFT_CHN");
props.put(MQConstants.USER_ID_PROPERTY, "user1");
props.put(MQConstants.PASSWORD_PROPERTY, "passw0rd");
props.put(MQConstants.USE_MQCSP_AUTHENTICATION_PROPERTY, true);
return new MQQueueManager("MQM", props);
}
But why do you want to query connection information, host, port etc?

If I understand your question correctly, you want to know all of the hostnames (or IP addresses) and Port numbers of the servers where the MI queue manager may reside. Correct?
This information is in your CCDT file. When you (or MQAdmin) created your CCDT entry for the CLNTCONN (client-side channel), you would have issued a like:
DEFINE CHANNEL(TEST.CHL) CHLTYPE(CLNTCONN) TRPTYPE(TCP) CONNAME('ipaddr1(1414), ipaddr2(1414)') QMNAME(QM1)
Hence, the CONNAME parameter has the information and that is what the MQ client library uses to connect to the remote queue manager. First it will try 'ipaddr1(1414)' and if it fails then it will try 'ipaddr2(1414)'.

How to get client connection information in HiveMQ Client? (MQTT)

I'm writing a main class that will create a few clients and test them subscribing and publishing. I'd like to display information of the clients connection, like the data & time connected, clientId, clientIP used to connect, whether they connected gracefully or not. I'm new to using tools like Logger so I'm not sure how I would do this. I left a link to the HiveMQ community edition (broker) and the client. I'd like to display this information in my main class in the HiveMQ client project but there a log file in the community edition called event.log which contains exactly the kind of information I want to display. I left an image below.
HiveMQ:
https://github.com/hivemq/hivemq-community-edition
https://github.com/hivemq/hivemq-mqtt-client
There is an event.log file in hivemq-community-edition that has the kind of information I'd like to display. It was generated when I build the project as a Gradle project so it won't be found unless you imported into Eclipse and built in with Gradle so I left a screenshot of what it looks like.
Code in my Main class in HiveMQ Client:
package com.main;
import java.util.UUID;
import com.hivemq.client.mqtt.MqttGlobalPublishFilter;
import com.hivemq.client.mqtt.datatypes.MqttQos;
import com.hivemq.client.mqtt.mqtt5.Mqtt5BlockingClient;
import com.hivemq.client.mqtt.mqtt5.Mqtt5BlockingClient.Mqtt5Publishes;
import com.hivemq.client.mqtt.mqtt5.Mqtt5Client;
import com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish;
import java.util.logging.Logger;
import java.util.NoSuchElementException;
import java.util.logging.Level;
import java.util.concurrent.TimeUnit;
public class Main {
private static final Logger LOGGER = Logger.getLogger(Main.class.getName()); // Creates a logger instance
public static void main(String[] args) {
Mqtt5BlockingClient client1 = Mqtt5Client.builder()
.identifier(UUID.randomUUID().toString()) // the unique identifier of the MQTT client. The ID is randomly generated between
.serverHost("localhost") // the host name or IP address of the MQTT server. Kept it 0.0.0.0 for testing. localhost is default if not specified.
.serverPort(1883) // specifies the port of the server
.buildBlocking(); // creates the client builder
client1.connect(); // connects the client
System.out.println("Client1 Connected");
System.out.println(client1.toString());
String testmessage = "How is it going!";
byte[] messagebytesend = testmessage.getBytes(); // stores a message as a byte array to be used in the payload
try {
Mqtt5Publishes publishes = client1.publishes(MqttGlobalPublishFilter.ALL); // creates a "publishes" instance thats used to queue incoming messages
client1.subscribeWith() // creates a subscription
.topicFilter("test1/#") // filters to receive messages only on this topic (# = Multilevel wild card, + = single level wild card)
.qos(MqttQos.AT_LEAST_ONCE) // Sets the QoS to 2 (At least once)
.send();
System.out.println("The client1 has subscribed");
client1.publishWith() // publishes the message to the subscribed topic
.topic("test/pancakes/topic") // publishes to the specified topic
.qos(MqttQos.AT_LEAST_ONCE)
.payload(messagebytesend) // the contents of the message
.send();
System.out.println("The client1 has published");
Mqtt5Publish receivedMessage = publishes.receive(5,TimeUnit.SECONDS).get(); // receives the message using the "publishes" instance waiting up to 5 seconds // .get() returns the object if available or throws a NoSuchElementException
byte[] tempdata = receivedMessage.getPayloadAsBytes(); // converts the "Optional" type message to a byte array
System.out.println();
String getdata = new String(tempdata); // converts the byte array to a String
System.out.println(getdata);
}
catch (InterruptedException e) { // Catches interruptions in the thread
LOGGER.log(Level.SEVERE, "The thread was interrupted while waiting for a message to be received", e);
}
catch (NoSuchElementException e){
System.out.println("There are no received messages"); // Handles when a publish instance has no messages
}
client1.disconnect();
System.out.println("Client1 Disconnected");
}
}

You can obtain information about the client with the method getConfig e.g.
Mqtt5ClientConfig config = client.getConfig();
config.getClientIdentifier();
To get the information of the current connection use getConnectionConfig e.g.
Optional<Mqtt5ClientConnectionConfig> connectionConfig = config.getConnectionConfig();
if (connectionConfig.isPresent()) {
MqttClientTransportConfig transportConfig = connectionConfig.get().getTransportConfig();
}
You can also use listeners which are notified when the client is connected or disconnected e.g.
Mqtt5Client.builder()
.addConnectedListener(context -> System.out.println("connected"))
.addDisconnectedListener(context -> System.out.println("disconnected"))
...

How can I Send/Receive a message from Azure Service Bus from Qpid JMS (qpid-jms-client-0.11.1.jar)?

I am currently researching how to connect to Azure Service Bus using Qpid JMS (qpid-jms-client-0.11.1.jar).
I have created a Demo Java application SimpleSenderReceiver which connects to an already configured Azure Service Bus using the following guide (#link1).
This code seems to work using a "very" old version om the Qpid JMS client (version 0.32). I am now trying to get it to work with the latest stable version of Qpid JMS (qpid-jms-client-0.11.1.jar), And so far I have not been successful.
Going through the documentation #link2 of Qpid JMS 0.11.1, you can see that the way that the in the properties file the property connectionfactory is different to that in version 0.32.
How can i setup a correct connection amqp connection string in the
properties file?
How can I setup de Qpid JMS - Azure Service Bus Demo to work with the latest Qpid stable version?
I keep running in the following problem:
731 [AmqpProvider:(1):[amqps://example-bus.servicebus.windows.net?transport.connectTimeout=60000]] INFO org.apache.qpid.jms.sasl.SaslMechanismFinder - Best match for SASL auth was: SASL-PLAIN
javax.jms.JMSException: Idle timeout value specified in connection OPEN ('30000 ms') is not supported. Minimum idle timeout is '60000' ms. TrackingId:238849ced1em4cd3a093261372f4fc1e_G21, SystemTracker:gateway6, Timestamp:10/27/2016 8:16:23 AM [condition = amqp:internal-error]
at org.apache.qpid.jms.provider.amqp.AmqpSupport.convertToException(AmqpSupport.java:150)
at org.apache.qpid.jms.provider.amqp.AmqpSupport.convertToException(AmqpSupport.java:105)
at org.apache.qpid.jms.provider.amqp.AmqpAbstractResource.remotelyClosed(AmqpAbstractResource.java:147)
at org.apache.qpid.jms.provider.amqp.AmqpAbstractResource.processRemoteClose(AmqpAbstractResource.java:251)
at org.apache.qpid.jms.provider.amqp.AmqpProvider.processUpdates(AmqpProvider.java:771)
at org.apache.qpid.jms.provider.amqp.AmqpProvider.access$1900(AmqpProvider.java:90)
at org.apache.qpid.jms.provider.amqp.AmqpProvider$17.run(AmqpProvider.java:699)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
I have the follwing properties file servicebus.properties:
# servicebus.properties - sample JNDI configuration
# Register a ConnectionFactory in JNDI using the form:
# connectionfactory.[jndi_name] = [ConnectionURL]
connectionfactory.myFactoryLookup = amqps://example-open-bus.servicebus.windows.net?jms.username=somePolicy&jms.password=aM2k3PaZY5jdIkmGKm7G%2FcH%2BUFQaFAgHIYc3dSsuiLI%3D&transport.connectTimeout=6000
# Register some queues in JNDI using the form
# queue.[jndi_name] = [physical_name]
# topic.[jndi_name] = [physical_name]
queue.myQueueLookup = queue1
I have the flowing class SimpleSenderReceiver.java:
package com.demo.AzureTest;
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Hashtable;
import java.util.Random;
public class SimpleSenderReceiver implements MessageListener {
private static boolean runReceiver = false;
private Connection connection;
private Session sendSession;
private Session receiveSession;
private MessageProducer sender;
private MessageConsumer receiver;
private static Random randomGenerator = new Random();
public SimpleSenderReceiver() throws Exception {
// Configure JNDI environment
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"org.apache.qpid.jms.jndi.JmsInitialContextFactory");
env.put(Context.PROVIDER_URL, "C://PATH//servicebus.properties");
Context context = new InitialContext(env);
// Look up ConnectionFactory and Queue
ConnectionFactory cf = (ConnectionFactory) context.lookup("myFactoryLookup");
System.out.println("lookup: " + context.lookup("myFactoryLookup"));
System.out.println("cf:"+cf);
Destination queue = (Destination) context.lookup("myQueueLookup");
System.out.println("queue:");
// Create Connection
connection = cf.createConnection();
System.out.println("connection :"+connection);
// // Create sender-side Session and MessageProducer
sendSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
System.out.println("Session open.");
sender = sendSession.createProducer(queue);
System.out.println(sender.getDestination());
System.out.println("sender:"+sender);
if (runReceiver) {
// Create receiver-side Session, MessageConsumer,and MessageListener
receiveSession = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
receiver = receiveSession.createConsumer(queue);
receiver.setMessageListener(this);
connection.start();
}
}
public static void main(String[] args) {
try {
if ((args.length > 0) && args[0].equalsIgnoreCase("sendonly")) {
runReceiver = false;
}
SimpleSenderReceiver simpleSenderReceiver = new SimpleSenderReceiver();
System.out.println("Press [enter] to send a message. Type 'exit' + [enter] to quit.");
BufferedReader commandLine = new java.io.BufferedReader(new InputStreamReader(System.in));
while (true) {
String s = commandLine.readLine();
if (s.equalsIgnoreCase("exit")) {
simpleSenderReceiver.close();
System.exit(0);
} else {
simpleSenderReceiver.sendMessage();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void sendMessage() throws JMSException {
TextMessage message = sendSession.createTextMessage();
message.setText("Hello from SIS Test AMQP message from Java JMSaaa");
long randomMessageID = randomGenerator.nextLong() >>>1;
message.setStringProperty("TenantId", "klant");
message.setStringProperty("EventType", "bericht");
message.setStringProperty("EventTypeVersion", "1.0");
message.setStringProperty("MessageType", "DocumentMessage");
message.setStringProperty("OperationType", "Create");
message.setStringProperty("SourceSystem", "sis_sender");
message.setStringProperty("EnterpriseKey", "sis_sender-klant-bericht");
message.setJMSMessageID("ID:" + randomMessageID);
sender.send(message);
System.out.println("Sent message with JMSMessageID = " + message.getJMSMessageID());
System.out.println("Sent message with Text = " + message.getText());
}
public void close() throws JMSException {
connection.close();
}
public void onMessage(Message message) {
try {
System.out.println("Received message with JMSMessageID = " + message.getJMSMessageID());
TextMessage txtmessage = (TextMessage) message;
System.out.println("Received message with Text = " + txtmessage.getText());
message.acknowledge();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Maven dependencies:
<dependencies>
<dependency>
<groupId>org.apache.qpid</groupId>
<artifactId>qpid-jms-client</artifactId>
<version>0.11.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.6.2</version>
</dependency>
</dependencies>
--- Update ---
I have since gotten a little further but still a bit stuck.
Update to the connectionfactory property:
connectionfactory.myFactoryLookup = connectionfactory.myFactoryLookup = amqps://example-open-bus.servicebus.windows.net?amqp.idleTimeout=150000&jms.username=somePolicy&jms.password=aM2k3PaZY5jdIkmGKm7G%2FcH%2BUFQaFAgHIYc3dSkuiLI%3D
I now am getting the following stacktrace:
842 [AmqpProvider:(1):[amqps://example-open-bus-bus.servicebus.windows.net]] INFO org.apache.qpid.jms.sasl.SaslMechanismFinder - Best match for SASL auth was: SASL-PLAIN
1014 [AmqpProvider:(1):[amqps://example-open-bus-bus.servicebus.windows.net]] INFO org.apache.qpid.jms.JmsConnection - Connection ID:543efe98-3ecc-485e-9f7f-3046c40db0cb:1 connected to remote Broker: amqps://example-open-bus-bus.servicebus.windows.net
1301 [AmqpProvider:(1):[amqps://example-open-bus-bus.servicebus.windows.net]] WARN org.apache.qpid.jms.provider.amqp.builders.AmqpResourceBuilder - Open of resource:(JmsProducerInfo { ID:546efe78-3ecc-485d-9f6f-3065c40db1ce:1:1:1, destination = klant }) failed: Attempted to perform an unauthorized operation. TrackingId:2950b1ed7a0d4e0a97b0k32b25434ac2_G10, SystemTracker:gateway6, Timestamp:10/27/2016 1:36:21 PM [condition = amqp:unauthorized-access]
Caught exception, exiting.
javax.jms.JMSSecurityException: Attempted to perform an unauthorized operation. TrackingId:2890b0ed9a0d4e0a97b1k32b25434ac2_G10, SystemTracker:gateway6, Timestamp:10/27/2016 1:36:21 PM [condition = amqp:unauthorized-access]
at org.apache.qpid.jms.provider.amqp.AmqpSupport.convertToException(AmqpSupport.java:129)
at org.apache.qpid.jms.provider.amqp.AmqpSupport.convertToException(AmqpSupport.java:105)
at org.apache.qpid.jms.provider.amqp.builders.AmqpResourceBuilder.handleClosed(AmqpResourceBuilder.java:167)
at org.apache.qpid.jms.provider.amqp.builders.AmqpResourceBuilder.processRemoteClose(AmqpResourceBuilder.java:113)
at org.apache.qpid.jms.provider.amqp.AmqpProvider.processUpdates(AmqpProvider.java:795)
at org.apache.qpid.jms.provider.amqp.AmqpProvider.access$1900(AmqpProvider.java:90)
at org.apache.qpid.jms.provider.amqp.AmqpProvider$17.run(AmqpProvider.java:699)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

The newer client enables AMQP heartbeating/idle-timeout by default, while the older client did not. The client sets a default 60second timeout, and in turn this means it requests a 30sec (30000ms) idle-timeout value in its AMQP Open frame when connecting to the server, in accordance with the specifications defined behaviour (where peers advertise half their actual timeout to help avoid spurious timeouts).
ServiceBus is refusing the 30000ms Open frame value, and indicating it needs a value of at least 60000ms (or presumably also 0, which means it is disabled). To acheive this you will need to configure the client to have its timeout set to at least 120000ms, which will result in the required minimum 60000ms Open frame idle-timeout value ServiceBus is mandating (or again, perhaps disable the clients timeout handling by setting it to 0).
You can do this using the "amqp.idleTimeout" URI option, as per http://qpid.apache.org/releases/qpid-jms-0.11.1/docs/index.html#amqp-configuration-options
EDIT: I see you figured that out at the same time I was typing my answer.
The new exception is from ServiceBus saying you arent authorized to do something you are trying. It should be easy enough to catch the exception at its source and determine what.
Your URI seems fine (though I assume your username isnt actually 'somePolicy' and the double connectionfactory.myFactoryLookup = connectionfactory.myFactoryLookup = at the start is a c&p error). I haven't used the client with ServiceBus personally, but I've seen questions from various folks that have, so I'm not aware of a particular issue outright stopping them working together.

I ran into the same security issue referred to above and spent a while tracking it down so for anyone else my issue was caused by the key value specified in the user.password query param containing the + character.
There is usually an = on the end of the value which I encoded as %3D in the string and I encoded the + as %2B however if you put a breakpoint at the point the ConnectionFactory is instantiated and look at the password attribute you will see that the = is correctly unencoded but the + has been stripped and is a SPACE hence the unauthorized access issues.
My workaround was just to regenerate the primary key in Azure so it didn't have a + in it (yuk) but it worked. Possibly a bug in the AQPID libs.

Amqp client not connecting to activemq server.

I'm trying connect from a amqp client to a aqtivemq server with default settings. It always gives the error message saying connection refused. Then I tried it with a rabbitmq server instead of a activemq server and it works fine. I wonder whether activemq needs a linux library to communicate.
Activemq server versions used which does not connects: 5.4.2 / 5.10.0
Rabitmq version used: 3.3.5
rabitmq sample client code
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.Channel;
public class Cache {
private final static String QUEUE_NAME = "hello";
public static void main(String[] argv)
throws java.io.IOException {
//creating the connection factory
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
//Creating a connection to the server
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
//declaring a queuw
channel.queueDeclare(QUEUE_NAME, false, false, false, null);
String message = "Hello World!";
//publishing the queue the queue
channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
System.out.println(" [x] Sent '" + message + "'");
//closing the connection
channel.close();
connection.close();
}
}
Fails in the following line of code
//Creating a connection to the server
Connection connection = factory.newConnection();
How can I solve this issue ?

I found a similar issue and I fixed checking the exchange declared was equals to the channel used to publish, in this way:
#Test
public void test() throws KeyManagementException, NoSuchAlgorithmException, URISyntaxException, IOException {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("10.211.55.20");
factory.setPort(5672);
factory.setVirtualHost("/");
factory.setUsername("guest");
factory.setPassword("guest");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare("KipcastDirect", "direct",
true, /* durable */
true, /* autodelete */
null); /* */
byte[] messageBodyBytes = "Hello, world!".getBytes();
AMQP.BasicProperties.Builder basic = new AMQP.BasicProperties.Builder();
AMQP.BasicProperties minBasic = basic.build();
minBasic = basic.priority(0).deliveryMode(1).build();
channel.basicPublish("KipcastDirect", "KipcastRouting", minBasic, messageBodyBytes);
System.out.println(" [x] Sent ");
channel.close();
}
Please be carefoul: the URI (from and to) on Camel Spring DSL context and JUnit class must refer to same Exchange and Queue to prevent a reply-text=PRECONDITION_FAILED – parameters for queue ‘QUEUE’ in vhost ‘/’ not equivalen error or similar. To check the queues / exchanges configuration parameter use:
rabbitmqadmin -V / list queue
rabbitmqadmin -V test list exchanges
Take a look to this: http://www.andreagirardi.it/blog/camel-and-rabbitmq-finally-how-to/