enqueue

seamlessly queue up asynchronous function calls. supports concurrency and timeouts.

Installation

Node:

$ npm install enqueue

Browser (with Duo):

var enqueue = require('matthewmueller/enqueue');

Example

var superagent = require('superagent');
var enqueue = require('enqueue');

// execute 2 at a time, with a timeout
var options = {
  concurrency: 2,
  timeout: 1000,
  limit: 10
};

var fn = enqueue(function(url, done) {
  superagent.get(url, done);
}, options);

fn('http://lapwinglabs.com', function(err, res) { /* ... */ })
fn('http://gittask.com', function(err, res) { /* ... */ })

// delayed until one of the other two come back
fn('http://mat.io', function(err, res) { /* ... */ })

API

queue = enqueue(fn, [options])

Create a queue wrapper for fn. options include:

• concurrency (default: 1): specify how many jobs you'd like to run at once.
• timeout (default: false): specify how long a job stall run before it times out.
• limit (default: Infinity): limit how many jobs can be queued up at any given time. queue will return an Error if the limit has been reached.

queue(args..., [end])

Pass any number of args... into the queue with an optional end function.

Test

npm install
make test

License

(The MIT License)

Copyright (c) 2014 Matthew Mueller <[email protected]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.