Better Elasticsearch error handling

public/controllers/blank-screen-controller.js

@@ -1,10 +1,11 @@
 const app = require('ui/modules').get('app/wazuh', []);
-
+import $ from 'jquery';
 // Logs controller
 app.controller('blankScreenController', function ($scope, $rootScope, errorHandler) {
-    $scope.error = '';
     if($rootScope.blankScreenError) {
-        $scope.error = errorHandler.handle($rootScope.blankScreenError,'',false,true);
+        $('#result').html(errorHandler.handle($rootScope.blankScreenError,'',false,true));
         delete $rootScope.blankScreenError;
+    } else {
+        $('#result').html('Something went wrong')
     }
 });

public/services/error-handler.js

@@ -46,6 +46,12 @@ app.service('errorHandler', function ( Notifier, appState, $location) {
 
         let text;
         switch (message) {
+            case 'kibana_index_pattern_error':
+                text = `There seem to be a problem with Wazuh app visualizations in Kibana, please reinstall the Wazuh app.`;
+                break;
+            case 'elasticsearch_down':
+                text = `Could not find .kibana index on Elasticsearch or maybe Elasticsearch is down.<br>Please check it and try again.`;
+                break;
             case 'no_elasticsearch':
                 text = `Could not connect with elasticsearch, maybe it's down.`;
                 break;

public/templates/error-handler/blank-screen.html

@@ -5,8 +5,8 @@
 
     <div class="checks-fail">
         <div class="health-check-error">
-            <div class="error-notify">Ups, something went wrong...</div>
-            {{ error }}<hr>            
+            <div class="error-notify">Ups, something went wrong...</div><hr>
+            <div id="result"></div><hr>            
             <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html">https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html</a><hr>            
             <a href="https://documentation.wazuh.com/current/installation-guide/">https://documentation.wazuh.com/current/installation-guide/</a>
 

server/api/wazuh-elastic.js

@@ -276,18 +276,22 @@ module.exports = (server, options) => {
             type:  'doc',
             q:     `visualization.title:"Wazuh App Overview General Metric alerts"`
         })
-        .then((data) => {
-            reply({
-                'statusCode': 200,
-                'data':       JSON.parse(data.hits.hits[0]._source.visualization.kibanaSavedObjectMeta.searchSourceJSON).index
-            });
+        .then(data => {
+            if(data && data.hits && data.hits.hits && data.hits.hits[0] && data.hits.hits[0]._source){
+                return reply({
+                    statusCode: 200,
+                    data:       JSON.parse(data.hits.hits[0]._source.visualization.kibanaSavedObjectMeta.searchSourceJSON).index
+                });
+            } else {
+                throw Error('no_visualization');
+            }
         })
-        .catch((error) => {
-            reply({
-                'statusCode': 500,
-                'error':      10000,
-                'message':    (error && error.message) ? error.message : error
-            }).code(500);
+        .catch(error => {
+            if(error && error.message && error.message === 'no_visualization'){
+                return reply('kibana_index_pattern_error').code(500);
+            }
+
+            return reply('elasticsearch_down').code(500);
         });
     };