Monogamous

Only one instance of an app at a time.

Install

npm install monogamous

Usage (using Electron as an example)

Decorating main process entrypoint

//index.js
import monogamous from 'monogamous'
import main from './main' //main process app stuff
import app from 'app'

booter = monogamous({ sock: 'myapp'}, { other: 'args'})
/**
* this presumes your `app.on('ready')` is inside your boot method
*/
booter.on('boot', main.boot.bind(main))
booter.on('reboot', main.reboot.bind(main))
booter.on('error', function(err) { console.error('ops', err) })

booter.boot({ more: 'args'})

Inside main process entrypoint

//index.js
import monogamous from 'monogamous'
import main from './main' //main process app stuff
import app from 'app'

booter = monogamous({ sock: 'myapp'}, { other: 'args'})

booter.on('boot', main.boot.bind(main))
booter.on('reboot', main.reboot.bind(main))
booter.on('error', function(err) { console.error('ops', err) })

//electron's ready event gets it going
app.on('ready', booter.boot.bind(booter))

Events

• boot : raised if an instance is not running. Your app may start up pristine here
• reboot : another instance was attempted.
• end : a call to end() shutdown the instance server

boot and reboot events receive an merged arguments object merging the following inputs, in order of precedence:

• args passed to monogamous creation; eg monogamous({ sock: 'foo'}, {these:'arepassedthru'})
• process argv , hashed (using minimist)
• args passed to boot; eg mono.boot({ these:'arealsopassedthru'})

API

Monogamous Factory

//only the 'sock' property is required to name your socket
let booter = monogamous({ sock: 'keepitsimple' }, [other args...])

Instance Methods

• boot([args]) : {Function} tries to connect to sock;failure to connect means an instance is running
• end() : {Function} closes socket server