[6976] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[14186] | 3 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[6976] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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[10172] | 23 | using System.ServiceModel;
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[6976] | 24 | using HeuristicLab.Clients.Common;
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| 25 |
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| 26 | namespace HeuristicLab.Clients.Hive {
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[7132] | 27 | public class HiveServiceLocator : IHiveServiceLocator {
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| 28 | private static IHiveServiceLocator instance = null;
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| 29 | public static IHiveServiceLocator Instance {
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[6976] | 30 | get {
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| 31 | if (instance == null) {
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[7132] | 32 | instance = new HiveServiceLocator();
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[6976] | 33 | }
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| 34 | return instance;
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| 35 | }
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| 36 | }
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| 37 |
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[13171] | 38 | private HiveServiceLocator() { }
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[9700] | 39 |
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[6976] | 40 | private string username;
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| 41 | public string Username {
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| 42 | get { return username; }
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| 43 | set { username = value; }
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| 44 | }
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| 45 |
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| 46 | private string password;
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| 47 | public string Password {
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| 48 | get { return password; }
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| 49 | set { password = value; }
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| 50 | }
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| 51 |
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[9700] | 52 | public int EndpointRetries { get; private set; }
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| 53 |
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| 54 | public string WorkingEndpoint { get; private set; }
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| 55 |
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[13171] | 56 |
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| 57 | public string GetEndpointInformation() {
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| 58 | string message = "Configured endpoints: " + Environment.NewLine;
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| 59 |
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| 60 | var configurations = Settings.Default.EndpointConfigurationPriorities;
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| 61 | foreach (var endpointConfigurationName in configurations) {
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| 62 | var cl = ClientFactory.CreateClient<HiveServiceClient, IHiveService>(endpointConfigurationName);
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| 63 | message += endpointConfigurationName + ": " + cl.Endpoint.Address + Environment.NewLine;
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| 64 | }
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| 65 |
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| 66 | if (string.IsNullOrEmpty(WorkingEndpoint)) {
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| 67 | message += "No working endpoint found, check you configuration.";
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| 68 | } else {
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| 69 | message += "Used endpoint: " + WorkingEndpoint;
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| 70 | }
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| 71 |
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| 72 | return message;
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| 73 | }
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| 74 |
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[6976] | 75 | private HiveServiceClient NewServiceClient() {
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[9700] | 76 | if (EndpointRetries >= Settings.Default.MaxEndpointRetries) {
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| 77 | return CreateClient(WorkingEndpoint);
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| 78 | }
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| 79 |
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| 80 | var configurations = Settings.Default.EndpointConfigurationPriorities;
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| 81 |
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| 82 | Exception exception = null;
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| 83 | foreach (var endpointConfigurationName in configurations) {
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| 84 | try {
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| 85 | var cl = CreateClient(endpointConfigurationName);
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| 86 | cl.Open();
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| 87 | WorkingEndpoint = endpointConfigurationName;
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| 88 | return cl;
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| 89 | }
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[10172] | 90 | catch (EndpointNotFoundException exc) {
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[9700] | 91 | exception = exc;
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| 92 | EndpointRetries++;
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | throw exception ?? new Exception("No endpoint for Hive service found.");
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| 97 | }
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| 98 |
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| 99 | private HiveServiceClient CreateClient(string endpointConfigurationName) {
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| 100 | HiveServiceClient cl = null;
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| 101 |
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[6976] | 102 | if (string.IsNullOrEmpty(username) && string.IsNullOrEmpty(password))
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[9700] | 103 | cl = ClientFactory.CreateClient<HiveServiceClient, IHiveService>(endpointConfigurationName);
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[6976] | 104 | else
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[9700] | 105 | cl = ClientFactory.CreateClient<HiveServiceClient, IHiveService>(endpointConfigurationName, null, username, password);
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[7142] | 106 |
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[6976] | 107 | return cl;
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| 108 | }
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| 109 |
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| 110 | public T CallHiveService<T>(Func<IHiveService, T> call) {
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| 111 | HiveServiceClient client = NewServiceClient();
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[7249] | 112 | HandleAnonymousUser(client);
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| 113 |
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[6976] | 114 | try {
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| 115 | return call(client);
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[7249] | 116 | }
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| 117 | finally {
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[6976] | 118 | try {
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| 119 | client.Close();
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| 120 | }
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| 121 | catch (Exception) {
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| 122 | client.Abort();
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| 123 | }
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| 124 | }
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| 125 | }
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| 126 |
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| 127 | public void CallHiveService(Action<IHiveService> call) {
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| 128 | HiveServiceClient client = NewServiceClient();
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[7249] | 129 | HandleAnonymousUser(client);
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| 130 |
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[6976] | 131 | try {
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| 132 | call(client);
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[7249] | 133 | }
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| 134 | finally {
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[6976] | 135 | try {
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| 136 | client.Close();
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| 137 | }
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| 138 | catch (Exception) {
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| 139 | client.Abort();
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| 140 | }
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| 141 | }
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| 142 | }
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[7249] | 143 |
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| 144 | private void HandleAnonymousUser(HiveServiceClient client) {
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| 145 | if (client.ClientCredentials.UserName.UserName == Settings.Default.AnonymousUserName) {
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| 146 | try {
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| 147 | client.Close();
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| 148 | }
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| 149 | catch (Exception) {
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| 150 | client.Abort();
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| 151 | }
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| 152 | throw new AnonymousUserException();
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| 153 | }
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| 154 | }
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[6976] | 155 | }
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| 156 | }
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