SimpleBus

Simple Service Bus implementation, for Node.js.

Installation

Via npm on Node:

npm install simplebus

Usage

Reference in your program:

var simplebus = require('simplebus');

Create a local message bus:

var bus = simplebus.createBus();

Create a local message bus with a fixed size message queue (recommended):

var bus = simplebus.createBus(1000);

Send a message to local bus:

bus.post("foo");
bus.post({ operation: 'sale', price: 100, quantity: 10 });

Subscribe to a message

// to all message
bus.subscribe(null, function (msg) { ... });
// to messages with property operation === 'sale'
bus.subscribe({ operation: 'sale' }, function(msg) { ... });
// to messages that satisfy a predicate
bus.subscribe(function (msg) { return msg.price < 100; }, function(msg) { ... });

Expose a bus as a server:

var server = simplebus.createServer(bus, port, [host]);
server.start();
///
server.stop();

Consume as a client:

var client = simplebus.createClient(port, [host]);
client.start(function () { // callback when connection is OK
	client.post("foo");
	client.subscribe(function (msg) { return msg.price > 100 }, function (msg) { .... });
});
///
client.stop();

Development

git clone git://github.com/ajlopez/SimpleBus.git
cd SimpleBus
npm install
npm test

Samples

• Market A distributed sample. Operator send buy or sale messages, subscriber listen to selected messages.

Versions

• 0.0.1: Published
• 0.0.2: Published, bus with maximum message queue size
• 0.0.3: Published, using SimpleRemote 0.0.5, updated engine range

Contribution

Feel free to file issues and submit pull requests — contributions are welcome.

If you submit a pull request, please be sure to add or update corresponding test cases, and ensure that npm test continues to pass.

(Thanks to JSON5 by aseemk. This file is based on that project README.md).