Fix connection errors handling, fixes #236.

src/datasource-zabbix/zabbixAPI.service.js

@@ -41,12 +41,12 @@ function ZabbixAPIService($q, alertSrv, zabbixAPICoreService) {
     request(method, params) {
       var self = this;
 
-      return this.zabbixAPICore.request(this.url, method, params, this.requestOptions, this.auth)
+      return this.zabbixAPICore
-        .then(function(result) {
+        .request(this.url, method, params, this.requestOptions, this.auth)
+        .then((result) => {
           return result;
-        },
+        }, (error) => {
           // Handle API errors
-        function(error) {
           if (isNotAuthorized(error.data)) {
             return self.loginOnce().then(
               function() {
@@ -56,15 +56,18 @@ function ZabbixAPIService($q, alertSrv, zabbixAPICoreService) {
               function(error) {
                 self.alertAPIError(error.data);
               });
+          } else {
+            this.alertSrv.set("Connection Error", error.data, 'error', 5000);
           }
         });
     }
 
-    alertAPIError(message) {
+    alertAPIError(message, timeout = 5000) {
       this.alertSrv.set(
         "Zabbix API Error",
         message,
-        'error'
+        'error',
+        timeout
       );
     }
 

src/datasource-zabbix/zabbixAPICore.service.js

@@ -51,7 +51,8 @@ class ZabbixAPICoreService {
       requestOptions.headers.Authorization = options.basicAuth;
     }
 
-    this.backendSrv.datasourceRequest(requestOptions).then(function (response) {
+    this.backendSrv.datasourceRequest(requestOptions)
+      .then((response) => {
         // General connection issues
         if (!response.data) {
           deferred.reject(response);
@@ -63,7 +64,10 @@ class ZabbixAPICoreService {
         }
 
         deferred.resolve(response.data.result);
+      }, (error) => {
+        deferred.reject(error.err);
       });
+
     return deferred.promise;
   }