The www.cloudamqp.com website is not exactly a PaaS cloud platform, but we need to introduce it to understand the next recipe.
CloudAMQP is a RabbitMQ service. You can use this service to avoid management and hardware costs. There are five plans available at http://www.cloudamqp.com/plans.html that you can choose from. The Little Lemur plan is free and is perfect for trying this service.
To try this recipe, you need to register an account on CloudAMQP; the registration is free.
- Register an account at https://customer.cloudamqp.com/login.
- Create a RabbitMQ instance; choose the Data center and the Plan:
- Go to the instance's details to see all your RabbitMQ connection parameters.
- Create a Java Maven program and add the following dependency:
<dependency> <groupId>com.rabbitmq</groupId> <artifactId>amqp-client</artifactId> <version>2.8.1</version> </dependency>
- Create a Java
Producerclass that creates and uses the queue calledmyorders_11. - Create a Java
Consumerclass that creates and uses the queue calledmyorders_11.
You can find the source code at Chapter11/Recipe01/.
After creating your account (step 1), you can start using a RabbitMQ instance.
CloudAMQP service, by default, runs on Amazon AWS, and you have to choose the AWS data center (as we have seen in the previous chapter).
Go to the Instance Details page to see your connection parameters:
In the source code example, we had created a producer and a consumer, bound to the queue myorders_11. The example sends a simple message to the queue, using the producer, and receives the message using the consumer.
Tip
To test this example, you can pass the CloudAMQP URL as a parameter in the following manner:
java -cp rabbitmq-client.jar:Recipe01-0.0.1-SNAPSHOT.jar rmqexample.Consumer amqp://oxxx:[email protected]/oibyfhxg
CloudAMQP is a very complete RabbitMQ service cloud. You can find all the clients and other cloud integrations at http://www.cloudamqp.com/docs.html.