app.portBindings and newManifest.tcpPorts may be null

crashnotifier.js

@@ -0,0 +1,78 @@
+#!/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 supervisor = require('supervisord-eventlistener'),
+    assert = require('assert'),
+    exec = require('child_process').exec,
+    util = require('util'),
+    fs = require('fs'),
+    mailer = require('./src/mailer.js');
+
+var gLastNotifyTime = {};
+var gCooldownTime = 1000 * 60  * 5; // 5 min
+
+function collectLogs(program, callback) {
+    assert.strictEqual(typeof program, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    var logFilePath = util.format('/var/log/supervisor/%s.log', program);
+
+    if (!fs.existsSync(logFilePath)) return callback(new Error(util.format('Log file %s does not exist.', logFilePath)));
+
+    fs.readFile(logFilePath, 'utf-8', function (error, data) {
+        if (error) return callback(error);
+
+        var lines = data.split('\n');
+        var boxLogLines = lines.slice(-100);
+
+        exec('dmesg', function (error, stdout /*, stderr */) {
+            if (error) console.error(error);
+
+            var lines = stdout.split('\n');
+            var dmesgLogLines = lines.slice(-100);
+
+            var result = '';
+            result += program + '.log\n';
+            result += '-------------------------------------\n';
+            result += boxLogLines.join('\n');
+            result += '\n\n';
+            result += 'dmesg\n';
+            result += '-------------------------------------\n';
+            result += dmesgLogLines.join('\n');
+
+            callback(null, result);
+        });
+    });
+}
+
+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...');
+});