send mail in case of missing events

dist/missingeventdetector.js

@@ -1,20 +1,45 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
+const nodemailer = require("nodemailer");
 const log = require("./log");
 const CallChain = require("./callchain");
 const Processor = require("./processor");
 const CHECK_PERIOD = 60; // seconds
+const SMTP_HOST = "localhost";
+const SMTP_PORT = 25;
+const SMTP_SENDER = "dispatcher@hottis.de";
+const SMTP_RECEIVER = "woho@hottis.de";
 class ClientEntry {
 }
 class MissingEventProcessor extends Processor.AProcessor {
     constructor() {
         super("MissingEventProcessor");
         this.clientMap = new Map();
+        this.smtp = nodemailer.createTransport({
+            host: SMTP_HOST,
+            port: SMTP_PORT,
+            secure: false
+        });
         this.timer = setInterval(() => {
             this.clientMap.forEach((value, key) => {
                 let currentTime = new Date().getTime();
                 let elapsedTime = currentTime - value.lastEvent;
                 log.info(`Checking ${key}, elapsed: ${elapsedTime / 1000}, avg. delay: ${value.avgDelay / 1000}`);
+                if ((value.avgDelay != 0) && (elapsedTime > (value.avgDelay * 3))) {
+                    let mail = {
+                        from: SMTP_SENDER,
+                        to: SMTP_RECEIVER,
+                        subject: `Missing Event Detected for ${key}`,
+                        text: `Missing Event Detected: ${key}, elapsed: ${elapsedTime / 1000}, avg. delay: ${value.avgDelay / 1000}`
+                    };
+                    this.smtp.sendMail(mail)
+                        .then((v) => {
+                        log.info(`Missing event info mail sent, ${v.response}`);
+                    })
+                        .catch((reason) => {
+                        log.error(`Failure when sending missing event info: ${reason}`);
+                    });
+                }
             });
         }, CHECK_PERIOD * 1000);
     }
@@ -30,8 +55,8 @@ class MissingEventProcessor extends Processor.AProcessor {
             clientEntry.count += 1;
             if (clientEntry.count >= 1) {
                 clientEntry.delaySum += clientEntry.delay;
-            }
                 clientEntry.avgDelay = clientEntry.delaySum / clientEntry.count;
+            }
             this.clientMap.set(client, clientEntry);
             log.info(`Entry for ${client} updated`);
         }

npm-debug.log

@@ -1,50 +0,0 @@
-0 info it worked if it ends with ok
-1 verbose cli [ '/usr/bin/nodejs',
-1 verbose cli   '/usr/bin/npm',
-1 verbose cli   'start',
-1 verbose cli   '--',
-1 verbose cli   '-c',
-1 verbose cli   'config.json' ]
-2 info using npm@3.10.10
-3 info using node@v6.11.2
-4 verbose run-script [ 'prestart', 'start', 'poststart' ]
-5 info lifecycle dispatcher@1.0.0~prestart: dispatcher@1.0.0
-6 silly lifecycle dispatcher@1.0.0~prestart: no script for prestart, continuing
-7 info lifecycle dispatcher@1.0.0~start: dispatcher@1.0.0
-8 verbose lifecycle dispatcher@1.0.0~start: unsafe-perm in lifecycle true
-9 verbose lifecycle dispatcher@1.0.0~start: PATH: /usr/lib/node_modules/npm/bin/node-gyp-bin:/home/wn/workspace-node/Dispatcher/node_modules/.bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/wn/.local/bin:/home/wn/bin:/opt/jdk/bin:/opt/apache-maven/bin:/home/wn/mos/bin
-10 verbose lifecycle dispatcher@1.0.0~start: CWD: /home/wn/workspace-node/Dispatcher
-11 silly lifecycle dispatcher@1.0.0~start: Args: [ '-c', 'node dist/main.js "-c" "config.json"' ]
-12 silly lifecycle dispatcher@1.0.0~start: Returned: code: 1  signal: null
-13 info lifecycle dispatcher@1.0.0~start: Failed to exec start script
-14 verbose stack Error: dispatcher@1.0.0 start: `node dist/main.js "-c" "config.json"`
-14 verbose stack Exit status 1
-14 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/lib/utils/lifecycle.js:255:16)
-14 verbose stack     at emitTwo (events.js:106:13)
-14 verbose stack     at EventEmitter.emit (events.js:191:7)
-14 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/lib/utils/spawn.js:40:14)
-14 verbose stack     at emitTwo (events.js:106:13)
-14 verbose stack     at ChildProcess.emit (events.js:191:7)
-14 verbose stack     at maybeClose (internal/child_process.js:891:16)
-14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
-15 verbose pkgid dispatcher@1.0.0
-16 verbose cwd /home/wn/workspace-node/Dispatcher
-17 error Linux 4.9.0-3-amd64
-18 error argv "/usr/bin/nodejs" "/usr/bin/npm" "start" "--" "-c" "config.json"
-19 error node v6.11.2
-20 error npm  v3.10.10
-21 error code ELIFECYCLE
-22 error dispatcher@1.0.0 start: `node dist/main.js "-c" "config.json"`
-22 error Exit status 1
-23 error Failed at the dispatcher@1.0.0 start script 'node dist/main.js "-c" "config.json"'.
-23 error Make sure you have the latest version of node.js and npm installed.
-23 error If you do, this is most likely a problem with the dispatcher package,
-23 error not with npm itself.
-23 error Tell the author that this fails on your system:
-23 error     node dist/main.js "-c" "config.json"
-23 error You can get information on how to open an issue for this project with:
-23 error     npm bugs dispatcher
-23 error Or if that isn't available, you can get their info via:
-23 error     npm owner ls dispatcher
-23 error There is likely additional logging output above.
-24 verbose exit [ 1, true ]

package.json

@@ -17,6 +17,7 @@
     "@types/mongodb": "^2.2.10",
     "@types/mqtt": "0.0.34",
     "@types/node": "^8.0.14",
+    "@types/nodemailer": "^3.1.2",
     "typescript": "^2.4.2"
   },
   "dependencies": {
@@ -24,6 +25,7 @@
     "command-line-args": "^4.0.7",
     "moment": "^2.18.1",
     "mongodb": "^2.2.31",
-    "mqtt": "^2.9.2"
+    "mqtt": "^2.9.2",
+    "nodemailer": "^4.0.1"
   }
 }

src/missingeventdetector.ts

@@ -1,9 +1,15 @@
+import * as nodemailer from 'nodemailer'
 import * as log from './log'
 import * as CallChain from './callchain'
 import * as Processor from './processor'
 
 
 const CHECK_PERIOD : number = 60  // seconds
+const SMTP_HOST : string = "localhost"
+const SMTP_PORT : number = 25
+const SMTP_SENDER : string = "dispatcher@hottis.de"
+const SMTP_RECEIVER : string = "woho@hottis.de"
+
 
 class ClientEntry {
     client : string
@@ -17,14 +23,40 @@ class ClientEntry {
 class MissingEventProcessor extends Processor.AProcessor {
     private timer : NodeJS.Timer
     private clientMap : Map<string, ClientEntry> = new Map<string, ClientEntry>()
+    private smtp : nodemailer.Transporter
+
 
     constructor() {
         super("MissingEventProcessor")
+
+        this.smtp = nodemailer.createTransport({
+            host: SMTP_HOST,
+            port: SMTP_PORT,
+            secure: false
+        });
+
         this.timer = setInterval(() => {
             this.clientMap.forEach((value : ClientEntry, key : string) : void => {
                 let currentTime : number = new Date().getTime()
                 let elapsedTime : number = currentTime - value.lastEvent
                 log.info(`Checking ${key}, elapsed: ${elapsedTime / 1000}, avg. delay: ${value.avgDelay / 1000}`)
+
+                if ((value.avgDelay != 0) && (elapsedTime > (value.avgDelay * 3))) {
+                    let mail : nodemailer.SendMailOptions = {
+                        from: SMTP_SENDER,
+                        to: SMTP_RECEIVER,
+                        subject: `Missing Event Detected for ${key}`,
+                        text: `Missing Event Detected: ${key}, elapsed: ${elapsedTime / 1000}, avg. delay: ${value.avgDelay / 1000}`
+                    };
+                
+                    this.smtp.sendMail(mail)
+                        .then((v : nodemailer.SentMessageInfo) => {
+                            log.info(`Missing event info mail sent, ${v.response}`)
+                        })
+                        .catch((reason : any) => {
+                            log.error(`Failure when sending missing event info: ${reason}`)
+                        })
+                }
             })
         }, CHECK_PERIOD * 1000)
     }