ambari/ambari-web/app/routes/stack_upgrade_routes.js

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var App = require('app');

module.exports = App.WizardRoute.extend({
  route: 'stack/upgrade',

  enter: function (router) {
    if (App.isAuthorized('CLUSTER.UPGRADE_DOWNGRADE_STACK')) {
      router.get('mainController').dataLoading().done(function () {
        Ember.run.next(function () {
          //if upgrade id is absent then upgrade is completed
          if (Em.isNone(App.db.get('MainAdminStackAndUpgrade', 'upgradeId'))) {
            router.transitionTo('main.admin.stackAndUpgrade.versions');
            return null;
          }

          App.router.get('updateController').set('isWorking', false);

          return App.ModalPopup.show({
            classNames: ['full-width-modal'],
            header: function () {
              var controller = App.router.get('mainAdminStackAndUpgradeController');
              if (controller.get('isDowngrade')) {
                return Em.I18n.t('admin.stackUpgrade.dialog.downgrade.header').format(controller.get('upgradeVersion'));
              } else {
                return Em.I18n.t('admin.stackUpgrade.dialog.header').format(controller.get('upgradeTypeDisplayName'), controller.get('upgradeVersion'));
              }
            }.property('App.router.mainAdminStackAndUpgradeController.upgradeVersion', 'App.router.mainAdminStackAndUpgradeController.isDowngrade'),
            bodyClass: App.upgradeWizardView,
            primary: Em.I18n.t('common.dismiss'),
            secondary: null,
            didInsertElement: function () {
              this._super();
              this.fitHeight();
              this.fitInnerHeight();
            },

            /**
             * fit height of scrollable block inside of modal body
             */
            fitInnerHeight: function () {
              var block = this.$().find('#modal > .modal-body');
              var scrollable = this.$().find('#modal .scrollable-block');

              scrollable.css('max-height', Number(block.css('max-height').slice(0, -2)) - block.height());
              block.css('max-height', 'none');
            },
            onPrimary: function () {
              this.closeWizard();
            },
            onClose: function () {
              this.closeWizard();
            },
            closeWizard: function () {
              App.router.get('updateController').set('isWorking', true);
              App.router.transitionTo('main.admin.stackAndUpgrade.versions');
              this.hide();
              location.reload();
            }
          });
        });
      });
    } else {
      Em.run.next(function () {
        App.router.transitionTo('main.views');
      });
    }
  }
});