From 01212920ae4954dda339aec7e29d0eb69cfb27b1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Garc=C3=ADa=20Aubert?=
 <danielgarciaaubert@gmail.com>
Date: Tue, 26 Mar 2019 18:47:57 +0100
Subject: [PATCH] Draft

---
 app.js | 47 ++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 42 insertions(+), 5 deletions(-)

diff --git a/app.js b/app.js
index f4de15fe..6031a55d 100755
--- a/app.js
+++ b/app.js
@@ -14,7 +14,7 @@ var logError = console.error.bind(console);
 // jshint undef:true
 
 var nodejsVersion = process.versions.node;
-if (!semver.satisfies(nodejsVersion, '>=6.9.0')) {
+if (!semver.satisfies(nodejsVersion, '>=10.15.1')) {
     logError(`Node version ${nodejsVersion} is not supported, please use Node.js 6.9 or higher.`);
     process.exit(1);
 }
@@ -177,10 +177,6 @@ process.on('SIGHUP', function() {
     });
 });
 
-process.on('uncaughtException', function(err) {
-    global.logger.error('Uncaught exception: ' + err.stack);
-});
-
 if (global.gc) {
     var gcInterval = Number.isFinite(global.environment.gc_interval) ?
         global.environment.gc_interval :
@@ -231,3 +227,44 @@ function getGCTypeValue (type) {
 
     return value;
 }
+
+addHandlers(listener, logger, 45000);
+
+function addHandlers(listener, logger, killTimeout) {
+    process.on('uncaughtException', exitProcess(listener, logger, killTimeout));
+    process.on('unhandledRejection', exitProcess(listener, logger, killTimeout));
+    process.on('SIGINT', exitProcess(listener, logger, killTimeout));
+    process.on('SIGTERM', exitProcess(listener, logger, killTimeout));
+}
+
+function exitProcess (listener, logger, killTimeout) {
+    return function exitProcessFn (signal) {
+        scheduleForcedExit(killTimeout, logger);
+
+        let code = 0;
+
+        if (!['SIGINT', 'SIGTERM'].includes(signal)) {
+            const err = signal instanceof Error ? signal : new Error(signal);
+            signal = undefined;
+            code = 1;
+
+            logger.fatal(err);
+        } else {
+            logger.info(`Process has received signal: ${signal}`);
+        }
+
+        logger.info(`Process is going to exit with code: ${code}`);
+        listener.close(() => log4js.shutdown(() => process.exit(1)));
+    };
+}
+
+function scheduleForcedExit (killTimeout, logger) {
+    // Schedule exit if there is still ongoing work to deal with
+    const killTimer = setTimeout(() => {
+        logger.info('Process didn\'t close on time. Force exit');
+        process.exit(1);
+    }, killTimeout);
+
+    // Don't keep the process open just for this
+    killTimer.unref();
+}