93 lines
2.0 KiB
Markdown
93 lines
2.0 KiB
Markdown
[](http://travis-ci.org/franck34/qjobs)
|
|
|
|
**qjobs**
|
|
==================
|
|
***Efficient queue job manager module for nodejs.***
|
|
|
|
Features
|
|
--------------
|
|
* Concurrency limiter
|
|
* Dynamic queue, a job can be added while the queue is running
|
|
* Optional delay before continuing after max concurrency has been reached
|
|
* Support of pause/unpause
|
|
* Events emitter based: start, end, sleep, continu, jobStart, jobEnd
|
|
* Quick statistic function, so you can know where the queue is, at regular interval
|
|
|
|
For what it can be usefull ?
|
|
---------------------
|
|
Jobs which needs to run in parallels, but in a controled maner, example:
|
|
* Network scanners
|
|
* Parallels monitoring jobs
|
|
* Images/Videos related jobs
|
|
|
|
|
|
Compatibility :
|
|
------------------
|
|
* not tested with nodejs < 0.10
|
|
|
|
|
|
Examples
|
|
--------------------
|
|
|
|
(take a look at tests directory if you are looking for running samples)
|
|
|
|
|
|
```
|
|
var qjobs = new require('./qjobs');
|
|
|
|
// My non blocking main job
|
|
var myjob = function(args,next) {
|
|
setTimeout(function() {
|
|
console.log('Do something interesting here',args);
|
|
next();
|
|
},1000);
|
|
}
|
|
|
|
var q = new qjobs({maxConcurrency:10});
|
|
|
|
// Let's add 30 job to the queue
|
|
for (var i = 0; i<30; i++) {
|
|
q.add(myjob,[i,'test '+i]);
|
|
}
|
|
|
|
q.on('start',function() {
|
|
console.log('Starting ...');
|
|
});
|
|
|
|
q.on('end',function() {
|
|
console.log('... All jobs done');
|
|
});
|
|
|
|
q.on('jobStart',function(args) {
|
|
console.log('jobStart',args);
|
|
});
|
|
|
|
q.on('jobEnd',function(args) {
|
|
|
|
console.log('jobend',args);
|
|
|
|
// If i'm jobId 10, then make a pause of 5 sec
|
|
|
|
if (args._jobId == 10) {
|
|
q.pause(true);
|
|
setTimeout(function() {
|
|
q.pause(false);
|
|
},5000);
|
|
}
|
|
});
|
|
|
|
q.on('pause',function(since) {
|
|
console.log('in pause since '+since+' milliseconds');
|
|
});
|
|
|
|
q.on('unpause',function() {
|
|
console.log('pause end, continu ..');
|
|
});
|
|
|
|
q.run();
|
|
|
|
//q.abort() will empty jobs list
|
|
|
|
```
|
|
|