npm install lib-onionPipelining with early exit option. Similar to async.waterfall however with the ability to exit out of the waterfall at any point.
The key features are:
* The ability to exit out of the pipeline early, without error, by calling exit.
Clear debugging ability as to which service is being executed with DEBUG=onion:
* A dynamic number of arguments can flow down the pipeline, next and exit will just be appended to the end.
npm install lib-onionFrom there, define your pipeline:
``javascript
var Onion = require('lib-onion');
var onion = new Onion('my-onion');
onion.add(function(msg, next, exit) {
msg.touchedByService1 = true;
next(null, msg);
}, 'service1');
onion.add(function(msg, next, exit) {
console.log(msg.touchedbyservice1); // === true
exit(null, msg);
}, 'service2');
onion.add(function(msg, next, exit) {
console.log('Ill never get called in this example');
}, 'service3');
`
And finally, execute it:javascript``
onion.handle(yourInputObject, function(err, result) {
console.log(result); // === true
});
There are a bunch more examples in the tests/ folder.