Checking total RAM

public/services/resolves/check-ram.js

@@ -0,0 +1,24 @@
+/*
+ * Wazuh app - Module to check total RAM available
+ * Copyright (C) 2018 Wazuh, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Find more information about this on the LICENSE file.
+ */
+export default async (genericReq, errorHandler) => {
+    try {
+        const data = await genericReq.request('GET', '/api/wazuh-api/ram');
+        const totalRAM = data.data.ram
+        if(totalRAM < 3072 && totalRAM > 2048) {
+            errorHandler.handle(`Kibana server has ${totalRAM}MB of RAM, performance will suffer. Please increase it.`, 'RAM', true);
+        } else if(totalRAM <= 2048) {
+            errorHandler.handle(`Kibana server has ${totalRAM}MB of RAM, performance will suffer. Please increase it.`, 'RAM');
+        }
+    } catch (error){
+        errorHandler.handle(`Kibana server has an unknown amount of RAM, please review it.`, 'RAM', true);
+    }
+}

public/services/resolves/index.js

@@ -15,5 +15,6 @@ import settingsWizard from './settings-wizard'
 import getSavedSearch from './get-saved-search'
 import goToKibana     from './go-to-kibana'
 import getIp          from './get-ip'
+import totalRAM       from './check-ram'
 
-export { checkTimestamp, healthCheck, settingsWizard, getSavedSearch, goToKibana, getIp }
+export { checkTimestamp, healthCheck, settingsWizard, getSavedSearch, goToKibana, getIp, totalRAM }

public/services/resolves/settings-wizard.js

@@ -11,11 +11,14 @@
  */
 import checkTimestamp from './check-timestamp'
 import healthCheck    from './health-check'
+import totalRAM       from './check-ram'
 
 export default ($rootScope, $location, $q, $window, testAPI, appState, genericReq, errorHandler) => {
     try {
         const deferred = $q.defer();
 
+        totalRAM(genericReq,errorHandler);
+
         // Save current location if we aren't performing a health-check, to later be able to come back to the same tab
         if (!$location.path().includes("/health-check")) {
             $rootScope.previousLocation = $location.path();

server/controllers/wazuh-api.js

@@ -23,6 +23,7 @@ import monitoring          from '../monitoring'
 import ErrorResponse       from './error-response'
 import { Parser }          from 'json2csv';
 import getConfiguration    from '../lib/get-configuration'
+import { totalmem }        from 'os'
 
 const blueWazuh = colors.blue('wazuh');
 
@@ -386,7 +387,7 @@ export default class WazuhApi {
             if(req.payload.method !== 'GET' && req.payload.body && req.payload.body.devTools){
                 const configuration = getConfiguration();
                 if(!configuration || (configuration && !configuration['devtools.allowall'])){
-                    return ErrorResponse('Allowed method: [GET]', 3023, 400, reply);
+                    return ErrorResponse('Allowed method: [GET]', 3029, 400, reply);
                 }
             }
             if(req.payload.body.devTools) {
@@ -528,4 +529,14 @@ export default class WazuhApi {
             return res({ error: error.message || error }).code(500)
         }
     }
+
+    async totalRam(req,reply) {
+        try{
+            // RAM in MB
+            const ram = Math.ceil(totalmem()/1024/1024);
+            return reply({ statusCode: 200, error: 0, ram });
+        } catch (error) {
+            return ErrorResponse(error.message || error, 3030, 500, reply);
+        }
+    }
 }

server/routes/wazuh-api.js

@@ -41,4 +41,7 @@ export default (server, options) => {
 
     // Returns data from the Wazuh API on CSV readable format
     server.route({ method: 'POST', path: '/api/wazuh-api/csv', handler: (req,res) => ctrl.csv(req,res)})
+
+    // Returns total RAM available from the current machine where Kibana is being executed
+    server.route({ method: 'GET', path: '/api/wazuh-api/ram', handler: (req,res) => ctrl.totalRam(req,res)})
 };