Files
cloudron-box/crashnotifier.js
Girish Ramakrishnan c4c463cbc2 collect logs using a sudo script
docker logs can only be read by root
2015-08-08 19:04:59 -07:00

54 lines
1.8 KiB
JavaScript

#!/usr/bin/env node
'use strict';
// WARNING This is a supervisor eventlistener!
// The communication happens via stdin/stdout
// !! No console.log() allowed
// !! Do not set DEBUG
var assert = require('assert'),
mailer = require('./src/mailer.js'),
safe = require('safetydance'),
supervisor = require('supervisord-eventlistener'),
path = require('path'),
util = require('util');
var gLastNotifyTime = {};
var gCooldownTime = 1000 * 60 * 5; // 5 min
var COLLECT_LOGS_CMD = path.join(__dirname, 'src/scripts/collectlogs.sh');
function collectLogs(program, callback) {
assert.strictEqual(typeof program, 'string');
assert.strictEqual(typeof callback, 'function');
var logs = safe.child_process.execSync('sudo ' + COLLECT_LOGS_CMD + ' ' + program, { encoding: 'utf8' });
callback(null, logs);
}
supervisor.on('PROCESS_STATE_EXITED', function (headers, data) {
if (data.expected === '1') return console.error('Normal app %s exit', data.processname);
console.error('%s exited unexpectedly', data.processname);
collectLogs(data.processname, function (error, result) {
if (error) {
console.error('Failed to collect logs.', error);
result = util.format('Failed to collect logs.', error);
}
if (!gLastNotifyTime[data.processname] || gLastNotifyTime[data.processname] < Date.now() - gCooldownTime) {
console.error('Send mail.');
mailer.sendCrashNotification(data.processname, result);
gLastNotifyTime[data.processname] = Date.now();
} else {
console.error('Do not send mail, already sent one recently.');
}
});
});
mailer.initialize(function () {
supervisor.listen(process.stdin, process.stdout);
console.error('Crashnotifier listening...');
});