= 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>3.3.0</version>
</dependency>
----

=== Gradle

Add the following dependency to your gradle project

[source,groovy,subs="+attributes"]
----
dependencies {
  compile 'io.vertx:vertx-rabbitmq-client:3.3.0'
}
----

=== Create a client

You can create a client instance as follows:

[source,java]
----
RabbitMQClient 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,java]
----
JsonObject message = new JsonObject().put("body", "Hello RabbitMQ, from Vert.x !");
client.basicPublish("", "my.queue", message, pubResult -> {
  if (pubResult.succeeded()) {
    System.out.println("Message published !");
  } else {
    pubResult.cause().printStackTrace();
  }
});
----

=== Consume

Consume messages from a queue

[source,java]
----
// Create the event bus handler which messages will be sent to
vertx.eventBus().consumer("my.address", msg -> {
  JsonObject json = (JsonObject) msg.body();
  System.out.println("Got message: " + json.getString("body"));
});

// Setup the link between rabbitmq consumer and event bus address
client.basicConsume("my.queue", "my.address", consumeResult -> {
  if (consumeResult.succeeded()) {
    System.out.println("RabbitMQ consumer created !");
  } else {
    consumeResult.cause().printStackTrace();
  }
});
----

=== Get

Will get a message from a queue

[source,java]
----
client.basicGet("my.queue", true, getResult -> {
  if (getResult.succeeded()) {
    JsonObject msg = getResult.result();
    System.out.println("Got message: " + msg.getString("body"));
  } else {
    getResult.cause().printStackTrace();
  }
});
----

=== Consume messages without auto-ack

[source,java]
----
vertx.eventBus().consumer("my.address", msg -> {
  JsonObject json = (JsonObject) msg.body();
  System.out.println("Got message: " + json.getString("body"));
  // ack
  client.basicAck(json.getLong("deliveryTag"), false, asyncResult -> {
  });
});

// Setup the link between rabbitmq consumer and event bus address
client.basicConsume("my.queue", "my.address", false, consumeResult -> {
  if (consumeResult.succeeded()) {
    System.out.println("RabbitMQ consumer created !");
  } else {
    consumeResult.cause().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>