systemic-converse

A Systemic component that lets other systemic components converse in the direction opposite of their dependency or to multiple components at once.

🎆 Special thanks 🎆

Betisman, neodmy, hamsaaldrobi

A parting gift with many thanks for all your amazing efforts over the years. Hopefully we’ll ‘Converse’ many more times in the future!

Your friends from the Integrations team

teunmooij, hustler, john, nanotower, akoszoltangoracz, gianluca, sergio

Installation

$ npm install systemic-converse

Usage

Add the component to your system:

import System from 'systemic';
import initConverse from 'systemic-converse';

new System().add('converse', initConverse()).start((err, components) => {
  // Do stuff with components.converse
});

systemic-converse supports 2 patterns:

• Notifications:
  • a notification can be sent only once
  • subscribers can await the notification
  • subscribers can request the notification after it was already published
• Pub / sub:
  • mutliple notifications can be sent
  • subscribers provide a callback that gets called with each notification
  • subscribers only receive publications that are publisher after they registered their subscription

Notifications

Notify other components:

converse.signal({ data: 'Betisman has left the building' });

or with a named signal:

converse.signal('system-started', { data: 42 });

and in other components wait for a signal:

const timeoutMs = 15000;
await converse.await('system-started', timeoutMs);

Pub / Sub

Publish to other components:

converse.publish('leaving-party', 'The party has started');

and in other components subscribe to this publication:

const handler = (data, context) => {
  // ...
};
converse.subscribe('leaving-party', handler);

or unsubscribe when you're no longer interested:

converse.unsubscribe('leaving-party', handler);

Version history

v1.0

• Initial version