Hello!
Today, I had a brief chat with Kris about a potential AeroGear Notifier Client API...
The basic idea is to wrap messaging APIs (e.g. Stomp.js, Vertx's eventbus or Socket.io/Engine.io) behind a common client 'interface'.
Basically the AeroGear-Notifier should be able to connect to a messaging system in order to subscribe to a channel to reveice messages from that channel. The AG-Notifier is also able to publish messages to ANY channel. Of course,unsubscribe and disconnect are required too...
Sure... the above is not (YET) really a SPEC, but it's start.... the JS API of the AG-Notifier (DRAFT 0.0.1) could looks like this:
/** * Connects to a given URL. The callback is invoked after a connection has been established. In case of an error, an Error * object will be passed to the callback */ AeroGear.Notifier.connect(String url, function callback); /** * Tears down the connection. The callback is invoked after a connection has been closed. In case of an error, an * Error object will be passed to the callback */ AeroGear.Notifier.disconnect(function callback); /** * Subscribes to a channel. The callback function is invoked for every message, received on the given channel. */ AeroGear.Notifier.subscribe(String channel, function callback); /** * Removes the subscription of the given channel. */ AeroGear.Notifier.unsubscribe(String channel); /** * Publishes a message to a given channel */ AeroGear.Notifier.publish(String channel, Object message);Perhaps a STATE-MASHINE would be nice as well:
AeroGear.Notifier.CONNECTING = 0; AeroGear.Notifier.OPEN = 1; AeroGear.Notifier.CLOSING = 2; AeroGear.Notifier.CLOSED = 3;Implementation of the Adapters
The different adapter implementations will be done separately:ag-notifier-vertx.js...Thoughts ?
--
Matthias Wessendorf
blog: http://matthiaswessendorf.wordpress.com/
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