Orion

Orion is a pluggable framework for microservices.

Following "batteries included but removable" design philosophy. Providing sane default implementations, but everything is swappable. Comes with built in support for various transports and codecs.

Features

• Async communication: event driven architecture (pub/sub)
• Sync communication: request-response transport layer
• RPC: clean and simple interface to build services

Components

• Transport: provides an interface for sync request/response communication
• Codec: used for encoding and decoding messages before transporting across the wire
• Service: provides an interface to name your service and register request handlers
• Client: provides an interface to make requests to services

Built-in components

• Transports: NATS (default)
• Codecs: JSON (default), MessagePack

Example

Service:

const orion = require('@betit/orion');

const service = new orion.Service('calc');

service.handle('add', (req, reply) => {
  reply(null, parseInt(req.params.a) + parseInt(req.params.b));
});

service.listen(() => {
  console.log(`Service started: ${service}`);
});

Client:

const orion = require('@betit/orion');

const client = new orion.Client({ service: 'calc' });

client.call('add', { a: 3, b: 2 }, (err, res) => {
  console.log(err, res);
  client.close();
});

Check out the examples folder for more examples.

Development

$ docker run -p 4222:4222 -p 8222:8222 -d nats
$ npm install
$ npm test

License

MIT