= RabbitMQ Client for Vert.x

A Vert.x client allowing applications to interact with a RabbitMQ broker (AMQP 0.9.1)

**This service is experimental and the APIs are likely to change before settling down.**

== Getting Started

=== Maven

Add the following dependency to your maven project

[source,xml,subs="+attributes"]
----
<dependency>
  <groupId>io.vertx</groupId>
  <artifactId>vertx-rabbitmq-client</artifactId>
  <version>3.3.2</version>
</dependency>
----

=== Gradle

Add the following dependency to your gradle project

[source,groovy,subs="+attributes"]
----
dependencies {
  compile 'io.vertx:vertx-rabbitmq-client:3.3.2'
}
----

=== Create a client

You can create a client instance as follows:

[source,js]
----
var RabbitMQClient = require("vertx-rabbitmq-js/rabbit_mq_client");
var client = RabbitMQClient.create(vertx, config);

----

== Operations

The following are some examples of the operations supported by the RabbitMQService API.

Consult the javadoc/documentation for detailed information on all API methods.

=== Publish

Publish a message to a queue

[source,js]
----
var message = {
  "body" : "Hello RabbitMQ, from Vert.x !"
};
client.basicPublish("", "my.queue", message, function (pubResult, pubResult_err) {
  if (pubResult_err == null) {
    console.log("Message published !");
  } else {
    pubResult_err.printStackTrace();
  }
});

----

=== Consume

Consume messages from a queue

[source,js]
----
// Create the event bus handler which messages will be sent to
// Create the event bus handler which messages will be sent to
vertx.eventBus().consumer("my.address", function (msg) {
  var json = msg.body();
  console.log("Got message: " + json.body);
});

// Setup the link between rabbitmq consumer and event bus address
client.basicConsume("my.queue", "my.address", function (consumeResult, consumeResult_err) {
  if (consumeResult_err == null) {
    console.log("RabbitMQ consumer created !");
  } else {
    consumeResult_err.printStackTrace();
  }
});

----

=== Get

Will get a message from a queue

[source,js]
----
client.basicGet("my.queue", true, function (getResult, getResult_err) {
  if (getResult_err == null) {
    var msg = getResult;
    console.log("Got message: " + msg.body);
  } else {
    getResult_err.printStackTrace();
  }
});

----

=== Consume messages without auto-ack

[source,js]
----
// Create the event bus handler which messages will be sent to
vertx.eventBus().consumer("my.address", function (msg) {
  var json = msg.body();
  console.log("Got message: " + json.body);
  // ack
  client.basicAck(json.deliveryTag, false, function (asyncResult, asyncResult_err) {
  });
});

// Setup the link between rabbitmq consumer and event bus address
client.basicConsume("my.queue", "my.address", false, function (consumeResult, consumeResult_err) {
  if (consumeResult_err == null) {
    console.log("RabbitMQ consumer created !");
  } else {
    consumeResult_err.printStackTrace();
  }
});

----

== Running the tests

You will need to have RabbitMQ installed and running with default ports on localhost for this to work.
<a href="mailto:nscavell@redhat.com">Nick Scavelli</a>