323 lines
8.7 KiB
JavaScript
323 lines
8.7 KiB
JavaScript
'use strict';
|
|
|
|
var express = require('express');
|
|
var router = express.Router();
|
|
var util = require('util');
|
|
var request = require('request');
|
|
var lxc = require('../lxc');
|
|
var doapi = require('../doapi')();
|
|
|
|
var workerSnapID = 'V1'
|
|
|
|
// console.log = function(){};
|
|
|
|
var label2runner = {};
|
|
var workers = [];
|
|
var isCheckingWorkers = false;
|
|
|
|
var workers = (function(){
|
|
var workers = [];
|
|
|
|
workers.currentCreatingMax = 2;
|
|
|
|
workers.currentCreating = 0;
|
|
|
|
workers.checkDroplet = function(id, time){
|
|
time = time || 10000;
|
|
|
|
return doapi.dropletInfo(id, function(data){
|
|
var worker = JSON.parse(data)['droplet'];
|
|
if(worker.status == 'active'){
|
|
console.log('Droplet is now active, starting runners in 20 seconds');
|
|
|
|
return setTimeout(function(worker){
|
|
console.log('Ready to start runners!');
|
|
workers.startRunners(workers.makeWorkerObj(worker), true);
|
|
workers.currentCreating--;
|
|
}, 20000, worker);
|
|
}else{
|
|
console.log('Worker not ready, check again in ', time, 'MS');
|
|
|
|
return setTimeout(function(){
|
|
workers.checkDroplet(id);
|
|
}, time);
|
|
}
|
|
});
|
|
};
|
|
|
|
workers.create = function(){
|
|
if(workers.currentCreating > workers.currentCreatingMax ) return false;
|
|
return doapi.dropletCreate({
|
|
name: 'clw'+workerSnapID+'-'+(Math.random()*100).toString().slice(-4),
|
|
image: '17575764'
|
|
}, function(data){
|
|
data = JSON.parse(data);
|
|
workers.currentCreating++;
|
|
setTimeout(function(dopletNewID){
|
|
return workers.checkDroplet(dopletNewID);
|
|
}, 70000, data.droplet.id);
|
|
return doapi.dropletSetTag('clworker', data.droplet.id, function(){});
|
|
});
|
|
|
|
};
|
|
|
|
workers.destroy = function(worker){
|
|
var worker = worker || workers.pop();
|
|
return doapi.dropletDestroy(worker.id, function(){});
|
|
};
|
|
|
|
workers.makeWorkerObj = function(worker){
|
|
worker.networks.v4.forEach(function(value){
|
|
worker[value.type+'IP'] = value.ip_address;
|
|
});
|
|
worker.availrunners = [];
|
|
worker.ip = worker.privateIP;
|
|
worker.usedrunner = 0;
|
|
worker.index = workers.length,
|
|
worker.getRunner = function(){
|
|
if(this.availrunners.length === 0) return false;
|
|
console.log('getting runner from ', worker.name, ' avail length ', this.availrunners.length);
|
|
var runner = this.availrunners.pop();
|
|
this.usedrunner++;
|
|
label2runner[runner.label] = runner;
|
|
|
|
return runner;
|
|
}
|
|
|
|
return worker;
|
|
};
|
|
|
|
workers.destroyOld = function(){
|
|
doapi.dropletsByTag('clworker', function(data){
|
|
data = JSON.parse(data);
|
|
data['droplets'].forEach(function(worker){
|
|
console.log('found old droplet, killing it');
|
|
doapi.dropletDestroy(worker.id, function(){});
|
|
});
|
|
});
|
|
};
|
|
|
|
workers.startRunners = function(worker, newWorker, stopPercent){
|
|
// console.log('starting runners on', worker.name, worker.ip)
|
|
stopPercent = stopPercent || 80;
|
|
ramPercentUsed(worker.ip, function(usedMemPercent){
|
|
if(usedMemPercent < stopPercent ){
|
|
var name = 'crunner-'+(Math.random()*100).toString().slice(-4);
|
|
return lxc.startEphemeral(name, 'crunner0', worker.ip, function(data){
|
|
if(!data.ip) return setTimeout(workers.startRunners(worker, newWorker),0);
|
|
console.log('started runner on', worker.name)
|
|
if(newWorker) worker = workers[workers.push(worker)-1]
|
|
|
|
worker.availrunners.push({
|
|
ip: data.ip,
|
|
name: name,
|
|
worker: worker,
|
|
label: worker.name + ':' + name
|
|
});
|
|
return setTimeout(workers.startRunners(worker, false ,stopPercent), 0);
|
|
});
|
|
}else{
|
|
console.log('using', String(usedMemPercent), 'percent memory, stopping runner creation!', worker.availrunners.length, 'created on ', worker.name);
|
|
}
|
|
});
|
|
};
|
|
|
|
workers.checkBalance = function(){
|
|
|
|
var minWorkers = 3;
|
|
console.log('checking balance');
|
|
|
|
if(workers.length < minWorkers){
|
|
console.log('less then 3 workers, starting a droplet');
|
|
for(var i=minWorkers-workers.length; i--;) workers.create();
|
|
return ;
|
|
}
|
|
if(workers[workers.length-3].usedrunner !== 0 && workers[workers.length-2].usedrunner !== 0 && workers[workers.length-1].usedrunner !== 0){
|
|
console.log('last 3 workers have no free runners, starting droplet');
|
|
return workers.create();
|
|
}
|
|
if(workers.length > minWorkers && workers[workers.length-3].usedrunner === 0 && workers[workers.length-2].usedrunner === 0 && workers[workers.length-1].usedrunner === 0){
|
|
console.log('Last 2 runners not used, killing last runner', workers.length);
|
|
return workers.destroy();
|
|
}
|
|
|
|
for(let worker of workers){
|
|
if(worker.length <= 3) break;
|
|
if(worker.availrunners.length === 0 && worker.usedrunner === 0){
|
|
console.log('found zombie worker, destroying')
|
|
workers.destroy(worker);
|
|
}
|
|
}
|
|
|
|
console.log('stopping workers balancing check');
|
|
};
|
|
|
|
return workers;
|
|
|
|
})();
|
|
|
|
var ramPercentUsed = function(ip, callback){
|
|
|
|
return lxc.exec(
|
|
"python3 -c \"a=`head /proc/meminfo|grep MemAvail|grep -Po '\\d+'`;t=`head /proc/meminfo|grep MemTotal|grep -Po '\\d+'`;print(round(((t-a)/t)*100, 2))\"",
|
|
ip,
|
|
callback
|
|
);
|
|
};
|
|
|
|
var runnerFree = function(runner){
|
|
lxc.stop(runner.name, runner.worker.ip);
|
|
runner.worker.usedrunner--;
|
|
if(runner.hasOwnProperty('timeout')){
|
|
clearTimeout(runner.timeout);
|
|
}
|
|
delete label2runner[runner.label];
|
|
|
|
workers.startRunners(runner.worker);
|
|
};
|
|
|
|
var lxcTimeout = function(runner, time){
|
|
time = time || 300000; // 5 minutes
|
|
|
|
if(runner.hasOwnProperty('timeout')){
|
|
clearTimeout(runner.timeout);
|
|
}
|
|
|
|
return runner.timeout = setTimeout(function(){
|
|
runnerFree(runner);
|
|
}, time);
|
|
};
|
|
|
|
var getAvailrunner = function(runner){
|
|
for(let worker of workers){
|
|
if(worker.availrunners.length === 0) continue;
|
|
if(runner && runner.worker.index <= worker.index) break;
|
|
if(runner) runnerFree(runner);
|
|
return worker.getRunner();
|
|
}
|
|
if(runner) return runner;
|
|
return null;
|
|
};
|
|
|
|
var run = function(req, res, runner, count){
|
|
count = count || 0;
|
|
console.log('run start', count, runner);
|
|
|
|
if(!runner){
|
|
console.log('no runner');
|
|
res.status(503);
|
|
return res.json({error: 'No runners, try again soon.'});
|
|
}
|
|
|
|
var httpOptions = {
|
|
url: 'http://' + runner.worker.ip,
|
|
headers: {
|
|
Host: runner.name
|
|
},
|
|
body: JSON.stringify({
|
|
code: req.body.code
|
|
})
|
|
};
|
|
console.log('run', runner);
|
|
|
|
|
|
return request.post(httpOptions, function(error, response, body){
|
|
// console.log('runner response:', arguments)
|
|
console.log('in request');
|
|
if(error || response.statusCode !== 200) return run(req, res, getAvailrunner(), ++count);
|
|
body = JSON.parse(body);
|
|
|
|
body['ip'] = runner.label;
|
|
lxcTimeout(runner);
|
|
return res.json(body);
|
|
|
|
});
|
|
};
|
|
|
|
setTimeout(function(){
|
|
console.log('Starting balance checking in 30 seconds')
|
|
setInterval(workers.checkBalance, 15000);
|
|
}, 180000);
|
|
|
|
workers.destroyOld();
|
|
workers.checkBalance();
|
|
|
|
// router.get('/start/:name', function(req, res, next){
|
|
// return lxc.start(req.params.name, function(data){
|
|
// if(!data){
|
|
// return res.json({
|
|
// status: 500,
|
|
// name: req.params.name,
|
|
// message: data
|
|
// });
|
|
// }else{
|
|
// res.json({});
|
|
// }
|
|
// });
|
|
// });
|
|
|
|
// router.get('/live/:template/:name', function(req, res, next){
|
|
// return lxc.startEphemeral(req.params.name, req.params.template, function (data) {
|
|
// console.log('live', arguments);
|
|
// return res.json(data);
|
|
// });
|
|
// });
|
|
|
|
// router.get('/clone/:template/:name', function(req, res, next){
|
|
// return lxc.clone(req.params.name, req.params.template, function(data){
|
|
// console.log('clone', arguments);
|
|
// if( data.match(/Created runner/) ){
|
|
// return res.json({status: 200});
|
|
// }else{
|
|
// return res.json({status: 500, message: data});
|
|
// }
|
|
// });
|
|
// });
|
|
|
|
// router.get('/destroy/:name', function(req, res, next){
|
|
// return lxc.destroy(req.params.name, function(data){
|
|
// console.log('destroy', arguments);
|
|
// if(data){
|
|
// return res.json({status: 500, message: data});
|
|
// }else{
|
|
// return res.json({status: 200});
|
|
// }
|
|
// });
|
|
// });
|
|
|
|
// router.get('/info/:name', function(req, res, next){
|
|
// return lxc.info(req.params.name, function(data){
|
|
// return res.json(data);
|
|
// });
|
|
// });
|
|
|
|
// router.get('/list', function(req, res, next) {
|
|
// return lxc.list(workers.clworker0.ip, function(data){
|
|
// return res.json(data);
|
|
// });
|
|
// });
|
|
|
|
router.get('/stop/:name', function(req, res, next){
|
|
return lxc.stop(req.params.name, function(data){
|
|
console.log('stop', arguments);
|
|
if(data){
|
|
return res.json({status: 500, name: req.params.name, message: data});
|
|
}else{
|
|
return res.json({status: 200});
|
|
}
|
|
});
|
|
});
|
|
|
|
router.get('/liststuff', function(req, res, next){
|
|
var obj = util.inspect(workers, {depth: 4});
|
|
res.send("<h1>Workers</h1><pre>"+obj+"</pre><h1>label2runner</h1><pre>"+util.inspect(label2runner)+'</pre><h1>DO calls</h1>'+doapi.calls);
|
|
});
|
|
|
|
router.post('/run/:ip?', function doRun(req, res, next){
|
|
console.log('hit runner route');
|
|
var runner = getAvailrunner(label2runner[req.params.ip]);
|
|
return run(req, res, runner);
|
|
});
|
|
|
|
module.exports = router;
|