ActiveMQ Plugin
grails-activemq is a plugin to embedded in a Grails application ActiveMQ for messaging. This release is very simple, in futures releases we provide mayor support for ActiveMQ advanced configuration.
This plugin can be used in conjuntion with jms plugin to develop MDP (Message Driven Pogos).
This plugin at the moment is not production ready. Use at your risk for rapid prototyping with JMS without installing anymore.
Code
Plugin code is located at GitHub: http://github.com/domix/grails-activemq/tree/master
If you wish to contribute, feel free to get a GitHub Account, fork the code, do your hacks and pull request.
Authors
Installation
grails install-plugin activemq
Recomended aditional configuration:
grails install-plugin jms
Configuration
Out of the box the plugin is fully configured to run in the local Grails application VM at port 61616. Be aware of port availability in your system. In a future release, we provide a configuration to change the port and other setting at convenience.
Out of the box Spring Beans
- jmsBroker: ActiveMQ itself
- connectionFactory: a Connection Factory to JMS Broker
- jmsTemplate: the Spring Template to send and receive messages
Mini Tutorial
Follow this simple steps:
- grails create-app demoActiveMQ
- cd demoActiveMQ
- grails install-plugin activemq
- grails install-plugin jms
- grails create-controller notification
- Edit NotificationController to this:
class NotificationController {
def index = {
def message = "Hi, this is a Hello World with JMS & ActiveMQ, " + new Date()
sendJMSMessage("queue.notification", message)
render message
}
}
- grails create-service onNotification
- Edit OnNotificationService to this:
class OnNotificationService {
boolean transactional = false
static expose = ['jms']
static destination = "queue.notification" def onMessage = {
println "GOT MESSAGE: $it"
}
}
- grails run-app
- Browse to: http://localhost:8080/demoActiveMQ/notification
- See result on console.
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