Node Js Process Module

TaskServer/NodeJsProcess.js

@@ -0,0 +1,56 @@
+exports.newNodeJsProcess = function newNodeJsProcess() {
+
+    let thisObject = {
+        initialize: initialize
+    }
+
+    return thisObject;
+
+    function initialize() {
+
+        process.on('uncaughtException', function (err) {
+            console.log('[ERROR] Task Server -> server -> uncaughtException -> err.message = ' + err.message)
+            console.log('[ERROR] Task Server -> server -> uncaughtException -> err.stack = ' + err.stack)
+            console.log(err.stack)
+            global.EXIT_NODE_PROCESS()
+        })
+
+        process.on('unhandledRejection', (reason, p) => {
+            console.log('[ERROR] Task Server -> server -> unhandledRejection -> reason = ' + JSON.stringify(reason))
+            console.log('[ERROR] Task Server -> server -> unhandledRejection -> p = ' + JSON.stringify(p))
+            console.log(reason.stack)
+            global.EXIT_NODE_PROCESS()
+        })
+
+        process.on('exit', function (config) {
+
+            if (global.TASK_NODE !== undefined) {
+                /* We send an event signaling that the Task is being terminated. */
+                let key = global.TASK_NODE.name + '-' + global.TASK_NODE.type + '-' + global.TASK_NODE.id
+
+                global.EVENT_SERVER_CLIENT.raiseEvent(key, 'Stopped') // Meaning Task Stopped
+                global.EVENT_SERVER_CLIENT.finalize()
+                global.EVENT_SERVER_CLIENT = undefined
+            }
+
+            //console.log('[INFO] Task Server -> server -> process.on.exit -> About to exit -> config = ' + config)
+        })
+
+        /* Here we listen for the message to stop this Task / Process comming from the Task Manager, which is the paret of this node js process. */
+        process.on('message', message => {
+            if (message === 'Stop this Task') {
+
+                global.STOP_TASK_GRACEFULLY = true;
+
+                /*
+                There are some process that might no be able to end grafully, for example the ones schedulle to process information in a future day or month.
+                In order to be sure that the process will be terminated, we schedulle one forced exit in 2 minutes from now.
+                */
+                let key = global.TASK_NODE.name + '-' + global.TASK_NODE.type + '-' + global.TASK_NODE.id
+                console.log('[INFO] Task Server -> server -> process.on -> Stopping Task ' + key + '. Nodejs process will be exited in less than 1 minute.')
+                setTimeout(global.EXIT_NODE_PROCESS, 60000);
+            }
+        });
+
+    }
+}