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cause

v0.10.4

Published

(web) automation framework

Downloads

4

Readme

’cause

an automation tool

why?

’cause

no, seriously. other tools exist — why reinvent the wheel?

  • ifttt is great, but too simple
  • yahoo! pipes doesn't let you create your own modules
  • huginn looks very promising, but I don't want to learn ruby
  • noflo didn't seem very accessible at the time I looked at it
  • I discovered node-red only after I had already begun working on ’cause
  • workflow is nice, but ios only

ultimately I did it to scratch my own itch.

theoretically you could use ’cause to do what tools like maid and controlplane do.

installation

requirements:

git clone https://github.com/freder/cause.git
cd cause
npm install && bower install
gulp build
mv config.js.example config.js

then edit config.js and fill in the XXXXXXXXXs.

run

node index.js

or, if you want to see debug messages:

DEBUG=cause:* node index.js

web frontend

as you start the tool, it ~~opens the web frontend in the browser~~ will tell you the URL you can access the web frontend with.

it currently only lists your active tasks and a visualization. the plan for the future is to make it possible to create and edit tasks using the web interface.

blocks

blocks are modular units — building blocks, so to speak. they receive the output of the previous block as their input, act upon it, and then in turn pass their output on to the next block. following the unix philosophy, blocks should only do one thing, but do it well.

based on its inherent logic, a ’cause block needs to decide if s.th. is worth reacting to or not. there are three different directions a block can pass its output on to:

  • if: s.th. changed / happened / fulfills a condition
  • else: the complement of if
  • always: always invoke the next block

you can think of it as an if / else statement with an extra always branch. each branch is optional and can have multiple following blocks connected to it.

a list of all available ’cause blocks on npm

writing your own blocks

check out cause-website-changed for a documented example.

if you create your own building blocks, make sure to share them as an npm package, and to add the cause-block tag / keyword.

tasks

tasks are defined as json files. example:

{
	"name": "adventure time",
	"interval": "every 2 hours",
	"steps": [
		{
			"id": "feed",
			"block": "feed",
			"description": "check if there are new adventure time episodes",
			"options": {
				"url": "http://www.watchcartoononline.com/anime/adventure-time/feed"
			},
			"flow": {
				"if": [
					"console",
					"email"
				]
			}
		},
		{
			"id": "console",
			"block": "log-console",
			"options": {
				"title": "new episodes",
				"message": "<%var episodes = input.map(function(ep) { return ep.title; })%>\n<%=format.list(episodes)%>"
			}
		},
		{
			"id": "email",
			"block": "email-notification",
			"options": {
				"title": "new adventure time episode(s)",
				"message": "<%_.each(input, function(ep) {%><a href=\"<%=ep.link%>\"><%=ep.title%></a><br><%})%>"
			}
		}
	]
}

cool examples / recipes