How to Consume & Publish message from Amazon MQ in Nodejs?

Question

I need to use Amazon MQ to consume and publish message to queue using amqp protocol in Nodejs. I have already set up AWS MQ, define the broker and created a queue.

I have followed AWS Javascript SDk but still I am not able to find any method to consume and publish message to queue.

Can someone help me how to connect to AWS MQ using amqp protocol to consume and publish message to queue.

Thanks

Answer 1

I have used amqp10 npm module which works to consume and publish message to AWS MQ.

Below is the code :

  const AMQPClient = require('amqp10').Client;
  const Policy = require('amqp10').Policy;

1.To Consume message from AWS MQ :

      let client = new AMQPClient(Policy.Utils.RenewOnSettle(1, 1, 
Policy.ServiceBusQueue));
      let connectionString = 'your_connnection_string';
      client.connect(connectionString)
          .then(function() {
              console.log("Connected");
              return Promise.all([

client.createReceiver(configurationHolder.config.getMessageQueueName)
              ]);
          })
          .spread(function(receiver) {
                  receiver.on('errorReceived', function(rx_err) {
                      console.warn('===> RX ERROR: ', rx_err);
                      return err;
                  });
                  receiver.on('message', function(message) {
                      client.disconnect().then(function() {
                      console.log('disconnected, when we get the message from the queue);
                      return message.body;
                  });
              });
          })
          .error(function(e) {
                  console.warn('connection error: ', e);
                  return err;
              });

2. To Publish Message to AWS MQ :

   let client = new AMQPClient(Policy.merge({
       senderLinkPolicy: {
           callbackPolicy: Policy.Utils.SenderCallbackPolicies.OnSent
       }
   }, Policy.DefaultPolicy));
   
   
       client.connect(connectionString, {
               'saslMechanism': 'ANONYMOUS'
           })
           .then(function() {
               console.log("Connected");
               return Promise.all([
                   client.createSender(queueName)
               ]);
           })
           .spread(function(sender) {
               sender.on('errorReceived', function(tx_err) {
                   console.warn('===> TX ERROR: ', tx_err);
                   return err;
               });
               var options = {
                   annotations: {
                       'x-opt-partition-key': 'pk' + msgValue
                   }
               };
               return sender.send(JSON.stringify(msgValue), 
   options).then(function(state) {
                   client.disconnect().then(function() {
                       console.log('disconnected, when we saw the value we 
   inserted after publish to AWS MQ.');
                       return state;
                   });
               });
           })
           .error(function(e) {
               console.warn('connection error: ', e);
               return err;
           });
   

Thanks