services/dashboard/services/login_check.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.
 */
angular.module('dashboard')
// Authentication Angular interceptor for http methods.
// If server respond 401 (unauthenticated), will redirect to login page.
  .factory('authInterceptor', ['$q', 'conf', function ($q, conf) {

    // Defer the error response to caller after this timeout to avoid browser hang issue
    // See https://github.com/gearpump/gearpump/issues/1855
    var deferErrorResponseMs = 3000;
    return {
      'responseError': function (response) {
        if (response.status == 401) {
          window.location.href = conf.loginUrl;
        }

        var deferred = $q.defer();
        setTimeout(function () {
          deferred.reject(response);
        }, 3000);
        return deferred.promise;

      }
    };
  }])
  .config(['$httpProvider', function ($httpProvider) {
    $httpProvider.interceptors.push('authInterceptor');
  }]);