Handle sendWebhook errors (#306)

server/src/controllers/analytics_controller.ts

@@ -264,7 +264,11 @@ async function processDetectionResult(analyticUnitId: AnalyticUnit.AnalyticUnitI
   const analyticUnit = await AnalyticUnit.findById(analyticUnitId);
   if(analyticUnit.alert) {
     if(!_.isEmpty(segments)) {
-      sendWebhook(analyticUnit.name, _.last(segments));
+      try {
+        sendWebhook(analyticUnit.name, _.last(segments));
+      } catch(err) {
+        console.error(`Error while sending webhook: ${err.message}`);
+      }
     }
   }
   return {

server/src/services/notification_service.ts

@@ -7,10 +7,6 @@ import * as querystring from 'querystring';
 
 // TODO: send webhook with payload without dep to AnalyticUnit
 export async function sendWebhook(analyticUnitName: string, segment: Segment) {
-  if(HASTIC_WEBHOOK_URL === null) {
-    throw new Error(`Can't send alert, HASTIC_WEBHOOK_URL is undefined`);
-  }
-
   const alert = {
     analyticUnitName,
     from: segment.from,
@@ -19,6 +15,10 @@ export async function sendWebhook(analyticUnitName: string, segment: Segment) {
 
   console.log(`Sending alert: ${JSON.stringify(alert)}`);
 
+  if(HASTIC_WEBHOOK_URL === null) {
+    throw new Error(`Can't send alert, HASTIC_WEBHOOK_URL is undefined`);
+  }
+
   let payload;
   if(HASTIC_WEBHOOK_TYPE === 'application/json') {
     payload = JSON.stringify(alert);