hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-ui/src/main/webapp/app/routes/application.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.
 */

import Ember from 'ember';
import AbstractRoute from './abstract';

export default AbstractRoute.extend({
  model() {
    return Ember.RSVP.hash({
      clusterInfo: this.store.findAll('ClusterInfo', {reload: true}).catch(function() {
        return null;
      }),
      userInfo: this.store.findAll('cluster-user-info', {reload: true}).catch(function() {
        return null;
      }),
      jhsHealth: this.store.queryRecord('jhs-health', {}).catch(function() {
        return null;
      }),
      timelineHealth: this.store.queryRecord('timeline-health', {}).catch(function() {
        return null;
      })
    });
  },

  actions: {
    /**
     * Base error handler for the application.
     * If specific routes do not handle the error, it will bubble up to
     * this handler. Here we redirect to either 404 page or a generic
     * error handler page.
     */
    error: function (error) {
      if (error && error.stack) {
        Ember.Logger.log(error.stack);
      }

      if (error && error.errors[0] && parseInt(error.errors[0].status) === 404) {
        this.intermediateTransitionTo('/notfound');
      } else if (error && error.errors[0] && parseInt(error.errors[0].status) === 401) {
        this.intermediateTransitionTo('/notauth');
      } else {
        this.intermediateTransitionTo('/error');
      }
    }
  },

  unloadAll: function() {
    this.store.unloadAll('ClusterInfo');
    this.store.unloadAll('cluster-user-info');
    this.store.unloadAll('timeline-health');
    this.store.unloadAll('jhs-health');
  },
});