postmaster-general
Dead-simple, ready-to-use, promise-based Node.js library, for microservice communication over AMQP using rabbot.
This library attempts to provide a simple, ready-to-go microservice message bus by setting defaults on the excellent rabbot library. If you have need of more fine-grained control, you may want to use rabbot directly.
Note: Version 2.0.0 of this library represents a big departure from version 1.0.0. Be sure to check out the examples to make sure you're migrating properly.
Install
npm install --save postmaster-generalUsage
The following snippet showcases basic usage.
const PostmasterGeneral = require('../postmaster-general');
const postmaster = new PostmasterGeneral('pub-sub');
// Start the Postmaster instance.
postmaster.addListener('action:get_greeting', function (message, done) {
console.log('[action:get_greeting] received');
return done(null, {
greeting: 'Hello, ' + message.name
});
})
// Add a listener callback.
.then(() => postmaster.start())
// Publish a fire-and-forget message.
.then(() => postmaster.publish('action:get_greeting', {name: 'Bob'}))
// Publish a message with a callback.
.then(() => postmaster.request('action:get_greeting', {name: 'Steve'}))
// Handle the callback.
.then((res) => {
console.log(res.greeting);
});
Wildcards
postmaster-general supports the default AMQP wildcards for topic routes.
License
Licensed under the MIT license.
