-
Notifications
You must be signed in to change notification settings - Fork 6
/
app.js
55 lines (45 loc) · 1.6 KB
/
app.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
'use strict';
/* jshint node: true */
var logger = require('nlogger').logger(module);
var express = require('express');
var _ = require('underscore');
var config = require('./config');
var poller = require('./poller');
var app = module.exports = express.createServer();
var reports = {};
function reapOldReports() {
logger.info('starting reap cycle on reports: ', _.keys(reports).length);
_.each(_.keys(reports), function(key) {
var report = reports[key];
var age = Math.round(((new Date()).getTime() - report.reported)/1000);
if (age >= config.reapAge) {
logger.info('reaping stale report for: {}:{}', report.host, report.port);
delete reports[key];
}
});
}
poller.emitter.on('report', function(report) {
var key = report.host + ':' + report.port;
reports[key] = report;
});
app.configure(function() {
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(__dirname + '/pages', { maxAge: 60*60*1000 }));
app.use(express.static(__dirname + '/static', { maxAge: 3*24*60*60*1000 }));
app.use(express.compress());
});
app.configure(function(){
app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});
app.get('/reports', function(req, res) {
res.setHeader('Content-Type', 'application/json');
res.setHeader('Cache-Control', 'public, max-age=' + 10);
res.send(JSON.stringify(reports));
res.end();
});
logger.info('starting web UI on port: ', config.httpPort);
app.listen(config.httpPort);
poller.startPollingMasterServer();
setInterval(reapOldReports, config.reapInterval*1000);