AMBARI-3961 Add flag to enable minimal responses. (atkach)

ambari-web/app/controllers/global/cluster_controller.js

@@ -268,7 +268,7 @@ App.ClusterController = Em.Controller.extend({
       return false;
     }
     var testUrl = App.get('isHadoop2Stack') ? '/data/hosts/HDP2/hc_host_status.json':'/data/dashboard/services.json';
-    var statusUrl = '/hosts?fields=Hosts/host_status,host_components/HostRoles/state';
+    var statusUrl = '/hosts?fields=Hosts/host_status,host_components/HostRoles/state&minimal_response=true';
     //desired_state property is eliminated since calculateState function is commented out, it become useless
     statusUrl = this.getUrl(testUrl, statusUrl);
 
@@ -316,7 +316,8 @@ App.ClusterController = Em.Controller.extend({
     var clusterUrl = this.getUrl('/data/clusters/cluster.json', '?fields=Clusters');
     var hostsRealUrl = '/hosts?fields=Hosts/host_name,Hosts/public_host_name,Hosts/cpu_count,Hosts/total_mem,' +
       'Hosts/host_status,Hosts/last_heartbeat_time,Hosts/os_arch,Hosts/os_type,Hosts/ip,host_components,Hosts/disk_info,' +
-      'metrics/disk,metrics/load/load_one,metrics/cpu/cpu_system,metrics/cpu/cpu_user,metrics/memory/mem_total,metrics/memory/mem_free';
+      'metrics/disk,metrics/load/load_one,metrics/cpu/cpu_system,metrics/cpu/cpu_user,metrics/memory/mem_total,metrics/memory/mem_free'+
+      '&minimal_response=true';
     var usersUrl = App.testMode ? '/data/users/users.json' : App.apiPrefix + '/users/?fields=*';
     var racksUrl = "/data/racks/racks.json";
     var dataSetUrl = "/data/mirroring/all_datasets.json";

ambari-web/app/controllers/global/update_controller.js

@@ -81,7 +81,8 @@ App.UpdateController = Em.Controller.extend({
   updateHost:function(callback) {
     var testUrl = App.get('isHadoop2Stack') ? '/data/hosts/HDP2/hosts.json' : '/data/hosts/hosts.json';
     var hostsUrl = this.getUrl(testUrl, '/hosts?fields=Hosts/host_name,Hosts/host_status,Hosts/last_heartbeat_time,Hosts/disk_info,' +
-      'metrics/disk,metrics/load/load_one,metrics/cpu/cpu_system,metrics/cpu/cpu_user,metrics/memory/mem_total,metrics/memory/mem_free');
+      'metrics/disk,metrics/load/load_one,metrics/cpu/cpu_system,metrics/cpu/cpu_user,metrics/memory/mem_total,metrics/memory/mem_free'+
+      '&minimal_response=true');
     App.HttpClient.get(hostsUrl, App.hostsMapper, {
       complete: callback
     });

ambari-web/app/mappers/hosts_mapper.js

@@ -68,17 +68,18 @@ App.hostsMapper = App.QuickDataMapper.create({
       var isModelLoaded = false;
 
       json.items.forEach(function (item) {
+        var hostName = item.Hosts.host_name;
         //receive host_components when hosts were added
         item.host_components = item.host_components || [];
         item.host_components.forEach(function (host_component) {
-          host_component.id = host_component.HostRoles.component_name + "_" + host_component.HostRoles.host_name;
+          host_component.id = host_component.HostRoles.component_name + "_" + hostName;
         }, this);
 
-        hostIds[item.Hosts.host_name] = true;
-        currentHostStatuses[item.Hosts.host_name] = item.Hosts.host_status;
+        hostIds[hostName] = true;
+        currentHostStatuses[hostName] = item.Hosts.host_status;
 
         var parsedItem = this.parseIt(item, this.config);
-        var hostCache = cacheData[item.Hosts.host_name];
+        var hostCache = cacheData[hostName];
 
         hostsWithFullInfo.push(parsedItem);
         if (hostCache) {
@@ -86,10 +87,10 @@ App.hostsMapper = App.QuickDataMapper.create({
             modifiedHosts.push(parsedItem);
             delete hostCache.is_modified;
           } else {
-            hostsData[item.Hosts.host_name] = this.getDiscrepancies(parsedItem, previousResponse[item.Hosts.host_name]);
+            hostsData[hostName] = this.getDiscrepancies(parsedItem, previousResponse[hostName]);
           }
         }
-        previousResponse[item.Hosts.host_name] = parsedItem;
+        previousResponse[hostName] = parsedItem;
       }, this);
 
       App.cache['previousHostStatuses'] = currentHostStatuses;

ambari-web/app/mappers/status_mapper.js

@@ -34,14 +34,15 @@ App.statusMapper = App.QuickDataMapper.create({
       var hostComponentsOnService = {};
 
       json.items.forEach(function (host) {
+        var hostName = host.Hosts.host_name;
         //update hosts, which have status changed
-        if (previousHostStatuses[host.Hosts.host_name] !== host.Hosts.host_status) {
-          hostStatuses[host.Hosts.host_name] = host.Hosts.host_status;
+        if (previousHostStatuses[hostName] !== host.Hosts.host_status) {
+          hostStatuses[hostName] = host.Hosts.host_status;
         }
-        currentHostStatuses[host.Hosts.host_name] = host.Hosts.host_status;
+        currentHostStatuses[hostName] = host.Hosts.host_status;
         var hostComponentsOnHost = [];
         host.host_components.forEach(function (host_component) {
-          host_component.id = host_component.HostRoles.component_name + "_" + host_component.HostRoles.host_name;
+          host_component.id = host_component.HostRoles.component_name + "_" + hostName;
           var existedComponent = previousComponentStatuses[host_component.id];
           var service = componentServiceMap[host_component.HostRoles.component_name];
 
@@ -55,11 +56,11 @@ App.statusMapper = App.QuickDataMapper.create({
               id: host_component.id,
               component_name: host_component.HostRoles.component_name,
               work_status: host_component.HostRoles.state,
-              host_id: host.Hosts.host_name,
+              host_id: hostName,
               service_id: service
             });
             //update host-components only on adding due to Ember Data features
-            if (hostsCache[host.Hosts.host_name]) hostsCache[host.Hosts.host_name].is_modified = true;
+            if (hostsCache[hostName]) hostsCache[hostName].is_modified = true;
           }
           currentComponentStatuses[host_component.id] = host_component.HostRoles.state;
 
@@ -76,8 +77,8 @@ App.statusMapper = App.QuickDataMapper.create({
         /**
          * updating relation between Host and his host-components
          */
-        if (hostsCache[host.Hosts.host_name]) {
-          hostsCache[host.Hosts.host_name].host_components = hostComponentsOnHost;
+        if (hostsCache[hostName]) {
+          hostsCache[hostName].host_components = hostComponentsOnHost;
         }
       }, this);