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source: branches/OKB (trunk integration)/HeuristicLab.Clients.OKB/3.3/Authentication/AuthenticationClient.cs @ 5867

Last change on this file since 5867 was 5550, checked in by swagner, 14 years ago

Worked on OKB (#1174)

File size: 3.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Linq;
25using HeuristicLab.Clients.Common;
26using HeuristicLab.Common;
27using HeuristicLab.Core;
28using HeuristicLab.PluginInfrastructure;
29
30namespace HeuristicLab.Clients.OKB.Authentication {
31  [Item("AuthenticationClient", "OKB authentication client.")]
32  public sealed class AuthenticationClient : IContent {
33    private static AuthenticationClient instance;
34    public static AuthenticationClient Instance {
35      get {
36        if (instance == null) instance = new AuthenticationClient();
37        return instance;
38      }
39    }
40
41    #region Properties
42    private IEnumerable<User> users;
43    public IEnumerable<User> Users {
44      get { return users; }
45    }
46    #endregion
47
48    private AuthenticationClient() { }
49
50    #region Refresh
51    public void Refresh() {
52      OnRefreshing();
53      try {
54        users = CallAuthenticationService<List<User>>(s => s.GetUsers()).OrderBy(x => x.Name);
55      }
56      finally {
57        OnRefreshed();
58      }
59    }
60    public void RefreshAsync(Action<Exception> exceptionCallback) {
61      var call = new Func<Exception>(delegate() {
62        try {
63          Refresh();
64        }
65        catch (Exception ex) {
66          return ex;
67        }
68        return null;
69      });
70      call.BeginInvoke(delegate(IAsyncResult result) {
71        Exception ex = call.EndInvoke(result);
72        if (ex != null) exceptionCallback(ex);
73      }, null);
74    }
75    #endregion
76
77    #region User Methods
78    public static IEnumerable<User> GetUsers() {
79      return CallAuthenticationService<List<User>>(s => s.GetUsers()).OrderBy(x => x.Name);
80    }
81    #endregion
82
83    #region Events
84    public event EventHandler Refreshing;
85    private void OnRefreshing() {
86      EventHandler handler = Refreshing;
87      if (handler != null) handler(this, EventArgs.Empty);
88    }
89    public event EventHandler Refreshed;
90    private void OnRefreshed() {
91      EventHandler handler = Refreshed;
92      if (handler != null) handler(this, EventArgs.Empty);
93    }
94    #endregion
95
96    #region Helpers
97    private static T CallAuthenticationService<T>(Func<IAuthenticationService, T> call) {
98      AuthenticationServiceClient client = ClientFactory.CreateClient<AuthenticationServiceClient, IAuthenticationService>();
99      try {
100        return call(client);
101      }
102      finally {
103        try {
104          client.Close();
105        }
106        catch (Exception) {
107          client.Abort();
108        }
109      }
110    }
111    #endregion
112  }
113}
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