var myChannel = AeroGear.Notifier.addChannel(String channel);
myChannel.onMessage(data);
myChannel.publishMessage(data);


And maybe pushing the concept further, the notifier could hold "clients" which holds channels ...

On Thu, Feb 21, 2013 at 6:38 PM, Matthias Wessendorf <matzew@apache.org> wrote:

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/
sessions: http://www.slideshare.net/mwessendorf
twitter: http://twitter.com/mwessendorf

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