Notifications timezone #649 (#781)

* test offset for units

* add timeZone

* remove old code

* remove consolelogs

* fix

* fix2

* add error

* add redexp

* for patterns

* for anomaly

* dry

* types

* fix

* fix

* funcs to utils

* timezone -> time

server/src/config.ts

@@ -1,10 +1,11 @@
 import { getJsonDataSync } from './services/json_service';
 import { normalizeUrl } from './utils/url';
+import { parseTimeZone } from './utils/time';
 
 import * as path from 'path';
 import * as fs from 'fs';
 import * as os from 'os';
-
+import * as moment from 'moment';
 
 let configFile = path.join(__dirname, '../../config.json');
 let configExists = fs.existsSync(configFile);
@@ -50,6 +51,7 @@ export const HASTIC_WEBHOOK_URL = getConfigField('HASTIC_WEBHOOK_URL', null);
 export const HASTIC_WEBHOOK_TYPE = getConfigField('HASTIC_WEBHOOK_TYPE', 'application/json');
 export const HASTIC_WEBHOOK_SECRET = getConfigField('HASTIC_WEBHOOK_SECRET', null);
 export const HASTIC_WEBHOOK_IMAGE_ENABLED = getConfigField('HASTIC_WEBHOOK_IMAGE', false);
+export const TIMEZONE_UTC_OFFSET = getTimeZoneOffset();
 
 export const ANLYTICS_PING_INTERVAL = 500; // ms
 export const PACKAGE_VERSION = getPackageVersion();
@@ -145,3 +147,13 @@ function getDbConfig(connectionStr: string): DBConfig {
   };
   return config;
 }
+
+function getTimeZoneOffset(): number {
+  let configTimeZone = getConfigField('TIMEZONE_UTC_OFFSET', null);
+  if(configTimeZone !== null) {
+    return parseTimeZone(configTimeZone);
+  } else {
+    const serverUtcOffset = moment().utcOffset();
+    return serverUtcOffset;
+  }
+}

server/src/controllers/analytics_controller.ts

@@ -89,7 +89,7 @@ async function onPushDetect(detectionResult: DetectionResult): Promise<void> {
   const segments = await onDetect(detectionResult);
   if(!_.isEmpty(segments) && analyticUnit.alert) {
     try {
-      const segment = await Segment.findOne(_.last(segments))
+      const segment = await Segment.findOne(_.last(segments));
       alertService.receiveAlert(analyticUnit, segment);
     } catch(err) {
       console.error(`error while sending webhook: ${err.message}`);

server/src/services/alert_service.ts

@@ -2,6 +2,7 @@ import { sendNotification, MetaInfo, AnalyticMeta, WebhookType, Notification } f
 import * as AnalyticUnit from '../models/analytic_units';
 import { Segment } from '../models/segment_model';
 import { availableReporter } from '../utils/reporter';
+import { toTimeZone } from '../utils/time';
 import { ORG_ID, HASTIC_API_KEY, HASTIC_WEBHOOK_IMAGE_ENABLED } from '../config';
 
 import axios from 'axios';
@@ -77,12 +78,14 @@ export class Alert {
   }
 
   protected makeMessage(meta: AnalyticMeta): string {
+    const localTimeFrom = toTimeZone(meta.from);
+    const localTimeTo = toTimeZone(meta.to);
     return [
     `[${meta.analyticUnitType.toUpperCase()} ALERTING] ${meta.analyticUnitName}`,
     `URL: ${meta.grafanaUrl}`,
     ``,
-    `From: ${new Date(meta.from)}`,
-    `To: ${new Date(meta.to)}`,
+    `From: ${localTimeFrom}`,
+    `To: ${localTimeTo}`,
     `ID: ${meta.analyticUnitId}`,
     `Message: ${meta.message}`
     ].join('\n');
@@ -103,12 +106,14 @@ class PatternAlert extends Alert {
   }
 
   protected makeMessage(meta: AnalyticMeta): string {
+    const localTimeFrom = toTimeZone(meta.from);
+    const localTimeTo = toTimeZone(meta.to);
     return [
       `[PATTERN DETECTED] ${meta.analyticUnitName}`,
       `URL: ${meta.grafanaUrl}`,
       ``,
-      `From: ${new Date(meta.from)}`,
-      `To: ${new Date(meta.to)}`,
+      `From: ${localTimeFrom}`,
+      `To: ${localTimeTo}`,
       `ID: ${meta.analyticUnitId}`
     ].join('\n');
   }
@@ -141,11 +146,12 @@ class ThresholdAlert extends Alert {
   }
 
   protected makeMessage(meta: AnalyticMeta): string {
+    const localTimeFrom = toTimeZone(meta.from);
     let message = [
       `[THRESHOLD ALERTING] ${meta.analyticUnitName}`,
       `URL: ${meta.grafanaUrl}`,
       ``,
-      `Starts at: ${new Date(meta.from)}`,
+      `Starts at: ${localTimeFrom}`,
       `ID: ${meta.analyticUnitId}`
     ].join('\n');
 

server/src/services/notification_service.ts

@@ -1,5 +1,5 @@
 import * as AnalyticUnit from '../models/analytic_units';
-import { HASTIC_WEBHOOK_URL, HASTIC_WEBHOOK_TYPE, HASTIC_WEBHOOK_SECRET, HASTIC_INSTANCE_NAME } from '../config';
+import { HASTIC_WEBHOOK_URL, HASTIC_WEBHOOK_TYPE, HASTIC_INSTANCE_NAME } from '../config';
 
 import axios from 'axios';
 import * as querystring from 'querystring';

server/src/utils/time.ts

@@ -0,0 +1,26 @@
+import { TIMEZONE_UTC_OFFSET } from '../config';
+
+import * as _ from 'lodash';
+import * as moment from 'moment';
+
+const MINUTES_IN_HOUR = 60;
+
+export function parseTimeZone(timeZone: string): number {
+  const re = /\b-?\d{1,2}?:\d{2}\b/;
+  const correctFormat = re.test(timeZone);
+  if(!correctFormat) {
+    throw new Error(`Wrong timeZone format in config - "TIMEZONE_UTC_OFFSET": ${timeZone}`);
+  }
+  const time = _.split(timeZone, ':');
+  let minutesOffset = Math.abs(Number(time[0])) * MINUTES_IN_HOUR + Number(time[1]);
+  if(timeZone.indexOf('-') !== -1) {
+    minutesOffset = -1 * minutesOffset;
+  }
+  return minutesOffset;
+}
+
+export function toTimeZone(time: moment.MomentInput): string {
+  const utcTime = moment(time).utc();
+  const timeWithOffset = utcTime.utcOffset(TIMEZONE_UTC_OFFSET);
+  return timeWithOffset.format('ddd MMM DD YYYY HH:mm:ss');
+}