AMBARI-9070 Single node cluster has 'Move ...' and "Enable HA" service actions for HDFS and YARN enabled. (ababiichuk)

ambari-web/app/app.js

@@ -137,6 +137,15 @@ module.exports = Em.Application.create({
     return Em.get((this.get('currentStackVersion') || this.get('defaultStackVersion')).match(/(.+)-\d.+/), '1');
   }.property('currentStackVersion', 'defaultStackVersion'),
 
+  /**
+   * true if cluster has only 1 host
+   * for now is used to disable move/HA actions
+   * @type {boolean}
+   */
+  isSingleNode: function() {
+    return this.get('allHostNames.length') === 1;
+  }.property('allHostNames.length'),
+
   allHostNames: [],
 
   currentStackVersionNumber: function () {

ambari-web/app/views/main/service/item.js

@@ -89,20 +89,22 @@ App.MainServiceItemView = Em.View.extend({
         action: App.get('isHaEnabled') ? 'disableHighAvailability' : 'enableHighAvailability',
         label: App.get('isHaEnabled') ? Em.I18n.t('admin.highAvailability.button.disable') : Em.I18n.t('admin.highAvailability.button.enable'),
         cssClass: App.get('isHaEnabled') ? 'icon-arrow-down' : 'icon-arrow-up',
-        isHidden: (App.get('isHaEnabled') || (/^1.3/.test(App.get('currentStackVersionNumber'))))
+        isHidden: (App.get('isHaEnabled') || (/^1.3/.test(App.get('currentStackVersionNumber')))),
+        disabled: App.get('isSingleNode')
       },
       TOGGLE_RM_HA: {
         action: 'enableRMHighAvailability',
         label: Em.I18n.t('admin.rm_highAvailability.button.enable'),
         cssClass: 'icon-arrow-up',
-        isHidden: App.get('isRMHaEnabled')
+        isHidden: App.get('isRMHaEnabled'),
+        disabled: App.get('isSingleNode')
       },
       MOVE_COMPONENT: {
         action: 'reassignMaster',
         context: '',
         label: Em.I18n.t('services.service.actions.reassign.master'),
         cssClass: 'icon-share-alt',
-        disabled: false
+        disabled: App.get('isSingleNode')
       },
       STARTDEMOLDAP: {
         action: 'startLdapKnox',

ambari-web/test/views/main/service/item_test.js

@@ -77,6 +77,7 @@ describe('App.MainServiceItemView', function () {
         {
           serviceName: "HDFS",
           displayName: "HDFS",
+          isSingleNode: true,
           serviceTypes: ["HA_MODE"],
           hostComponents: [
             Em.Object.create({
@@ -103,9 +104,9 @@ describe('App.MainServiceItemView', function () {
           result: [
             {"action": "restartAllHostComponents", "context": "HDFS", "label": "Restart All", "cssClass": "icon-repeat", "disabled": false},
             {"action": "rollingRestart", "label": "Restart DataNodes", "cssClass": "icon-time", "disabled": false, "context": "DATANODE"},
-            {"action": "reassignMaster", "context": "NAMENODE", "label": "Move NameNode", "cssClass": "icon-share-alt", "disabled": false},
-            {"action": "reassignMaster", "context": "SECONDARY_NAMENODE", "label": "Move SNameNode", "cssClass": "icon-share-alt", "disabled": false},
-            {"action": "enableHighAvailability", "label": "Enable NameNode HA", "cssClass": "icon-arrow-up", "isHidden": false},
+            {"action": "reassignMaster", "context": "NAMENODE", "label": "Move NameNode", "cssClass": "icon-share-alt", "disabled": true},
+            {"action": "reassignMaster", "context": "SECONDARY_NAMENODE", "label": "Move SNameNode", "cssClass": "icon-share-alt", "disabled": true},
+            {"action": "enableHighAvailability", "label": "Enable NameNode HA", "cssClass": "icon-arrow-up", "isHidden": false, "disabled": true,},
             {"action": "runSmokeTest", "label": "Run Service Check", "cssClass": "icon-thumbs-up-alt"},
             {"action": "turnOnOffPassive", "context": "Turn On Maintenance Mode for HDFS", "label": "Turn On Maintenance Mode", "cssClass": "icon-medkit", "disabled": false},
             {"action": "rebalanceHdfsNodes", "customCommand": "REBALANCEHDFS", "context": "Rebalance HDFS", "label": "Rebalance HDFS", "cssClass": "icon-refresh", "disabled": false},
@@ -172,7 +173,7 @@ describe('App.MainServiceItemView', function () {
             {"action": "rollingRestart", "label": "Restart NodeManagers", "cssClass": "icon-time", "disabled": false, "context": "NODEMANAGER"},
             {"action": "reassignMaster", "context": "APP_TIMELINE_SERVER", "label": "Move App Timeline Server", "cssClass": "icon-share-alt", "disabled": false},
             {"action": "reassignMaster", "context": "RESOURCEMANAGER", "label": "Move ResourceManager", "cssClass": "icon-share-alt", "disabled": false},
-            {"action": "enableRMHighAvailability", "label": "Enable ResourceManager HA", "cssClass": "icon-arrow-up", "isHidden": false},
+            {"action": "enableRMHighAvailability", "label": "Enable ResourceManager HA", "cssClass": "icon-arrow-up", "isHidden": false, disabled: false},
             {"action": "runSmokeTest", "label": "Run Service Check", "cssClass": "icon-thumbs-up-alt"},
             {"action": "turnOnOffPassive", "context": "Turn On Maintenance Mode for YARN", "label": "Turn On Maintenance Mode", "cssClass": "icon-medkit", "disabled": false},
             {"action": "downloadClientConfigs", "label": "Download Client Configs", "cssClass": "icon-download-alt", "isHidden": true, "disabled": false, "hasSubmenu": false, "submenuOptions": []}
@@ -330,6 +331,8 @@ describe('App.MainServiceItemView', function () {
 
       sinon.stub(App, 'get', function (k) {
         switch (k) {
+          case 'isSingleNode':
+            return (view.get('controller.content.serviceName') == 'HDFS');
           case 'supports.autoRollbackHA':
           case 'isRMHaEnabled':
           case 'isHaEnabled':