mcs/class/System.ServiceModel/System.ServiceModel.PeerResolvers/CustomPeerResolverService.cs

   1 //
   2 // CustomPeerResolverService.cs
   3 //
   4 // Author:
   5 //     Marcos Cobena (marcoscobena@gmail.com)
   6 //      Atsushi Enomoto  <atsushi@ximian.com>
   7 //
   8 // Copyright 2007 Marcos Cobena (http://www.youcannoteatbits.org/)
   9 //
  10 // Copyright (C) 2009 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Collections.Generic;
  33 using System.IO;
  34 using System.Linq;
  35 using System.Net.Sockets;
  36 using System.Transactions;
  37 using System.Timers;
  38
  39 namespace System.ServiceModel.PeerResolvers
  40 {
  41         [MonoTODO ("Implement cleanup and refresh")]
  42         [ServiceBehavior (ConcurrencyMode = ConcurrencyMode.Multiple,
  43                           InstanceContextMode = InstanceContextMode.Single,
  44                           UseSynchronizationContext = false)]
  45         public class CustomPeerResolverService : IPeerResolverContract
  46         {
  47                 static ServiceHost localhost;
  48
  49                 static void SetupCustomPeerResolverServiceHost ()
  50                 {
  51                         // launch peer resolver service locally only when it does not seem to be running ...
  52                         var t = new TcpListener (8931);
  53                         try {
  54                                 t.Start ();
  55                                 t.Stop ();
  56                         } catch {
  57                                 return;
  58                         }
  59                         Console.WriteLine ("WARNING: it is running peer resolver service locally. This means, the node registration is valid only within this application domain...");
  60                         var host = new ServiceHost (new LocalPeerResolverService (TextWriter.Null));
  61                         host.Description.Behaviors.Find<ServiceBehaviorAttribute> ().InstanceContextMode = InstanceContextMode.Single;
  62                         host.AddServiceEndpoint (typeof (ICustomPeerResolverContract), new BasicHttpBinding (), "http://localhost:8931");
  63                         localhost = host;
  64                         host.Open ();
  65                 }
  66
  67                 ICustomPeerResolverClient client;
  68                 bool control_shape, opened;
  69                 TimeSpan refresh_interval, cleanup_interval;
  70
  71                 public CustomPeerResolverService ()
  72                 {
  73                         client = ChannelFactory<ICustomPeerResolverClient>.CreateChannel (new BasicHttpBinding (), new EndpointAddress ("http://localhost:8931"));
  74
  75                         refresh_interval = new TimeSpan (0, 10, 0);
  76                         cleanup_interval = new TimeSpan (0, 1, 0);
  77                 }
  78
  79                 public TimeSpan CleanupInterval {
  80                         get { return cleanup_interval; }
  81                         set {
  82                                 if ((value < TimeSpan.Zero) || (value > TimeSpan.MaxValue))
  83                                         throw new ArgumentOutOfRangeException (
  84                                         "The interval is either zero or greater than max value.");
  85                                 if (opened)
  86                                         throw new InvalidOperationException ("The interval must be set before it is opened");
  87
  88                                 cleanup_interval = value;
  89                         }
  90                 }
  91
  92                 public bool ControlShape {
  93                         get { return control_shape; }
  94                         set {
  95                                 if (opened)
  96                                         throw new InvalidOperationException ("The interval must be set before it is opened");
  97                                 control_shape = value;
  98                         }
  99                 }
 100
 101                 public TimeSpan RefreshInterval {
 102                         get { return refresh_interval; }
 103                         set {
 104                                 if ((value < TimeSpan.Zero) || (value > TimeSpan.MaxValue))
 105                                         throw new ArgumentOutOfRangeException (
 106                                         "The interval is either zero or greater than max value.");
 107                                 if (opened)
 108                                         throw new InvalidOperationException ("The interval must be set before it is opened");
 109
 110                                 refresh_interval = value;
 111                         }
 112                 }
 113
 114                 [MonoTODO ("Do we have to unregister nodes here?")]
 115                 public virtual void Close ()
 116                 {
 117                         if (! opened)
 118                                 throw new InvalidOperationException ("The service has never been opened or it was closed by a previous call to this method.");
 119                         client.Close ();
 120                         opened = false;
 121
 122                         if (localhost != null) {
 123                                 localhost.Close ();
 124                                 localhost = null;
 125                         }
 126                 }
 127
 128                 public virtual ServiceSettingsResponseInfo GetServiceSettings ()
 129                 {
 130                         if (! opened)
 131                                 throw new InvalidOperationException ("The service has never been opened or it was closed previously.");
 132
 133                         return client.GetServiceSettings ();
 134                 }
 135
 136                 public virtual void Open ()
 137                 {
 138                         if (localhost == null)
 139                                 SetupCustomPeerResolverServiceHost ();
 140
 141                         if ((CleanupInterval == TimeSpan.Zero) || (RefreshInterval == TimeSpan.Zero))
 142                                 throw new ArgumentException ("Cleanup interval or refresh interval are set to a time span interval of zero.");
 143
 144                         if (opened)
 145                                 throw new InvalidOperationException ("The service has been started by a previous call to this method.");
 146
 147                         opened = true;
 148
 149                         client.Open ();
 150                         client.SetCustomServiceSettings (new PeerServiceSettingsInfo () { ControlMeshShape = control_shape, RefreshInterval = refresh_interval, CleanupInterval = cleanup_interval });
 151                 }
 152
 153                 public virtual RefreshResponseInfo Refresh (RefreshInfo refreshInfo)
 154                 {
 155                         if (refreshInfo == null)
 156                                 throw new ArgumentException ("Refresh info cannot be null.");
 157
 158                         if (! opened)
 159                                 throw new InvalidOperationException ("The service has never been opened or it was closed previously.");
 160
 161                         return client.Refresh (refreshInfo);
 162                 }
 163
 164                 public virtual RegisterResponseInfo Register (RegisterInfo registerInfo)
 165                 {
 166                         if (registerInfo == null)
 167                                 throw new ArgumentException ("Register info cannot be null.");
 168
 169                         if (! opened)
 170                                 throw new InvalidOperationException ("The service has never been opened or it was closed previously.");
 171
 172                         return client.Register (registerInfo);
 173                 }
 174
 175                 public virtual RegisterResponseInfo Register (Guid clientId, string meshId, PeerNodeAddress address)
 176                 {
 177                         return Register (new RegisterInfo (clientId, meshId, address));
 178                 }
 179
 180                 public virtual ResolveResponseInfo Resolve (ResolveInfo resolveInfo)
 181                 {
 182                         if (resolveInfo == null)
 183                                 throw new ArgumentException ("Resolve info cannot be null.");
 184
 185                         if (! opened)
 186                                 throw new InvalidOperationException ("The service has never been opened or it was closed previously.");
 187
 188                         return client.Resolve (resolveInfo);
 189                 }
 190
 191                 public virtual void Unregister (UnregisterInfo unregisterInfo)
 192                 {
 193                         if (unregisterInfo == null)
 194                                 throw new ArgumentException ("Unregister info cannot be null.");
 195
 196                         if (! opened)
 197                                 throw new InvalidOperationException ("The service has never been opened or it was closed previously.");
 198
 199                         client.Unregister (unregisterInfo);
 200                 }
 201
 202                 public virtual RegisterResponseInfo Update (UpdateInfo updateInfo)
 203                 {
 204                         if (updateInfo == null)
 205                                 throw new ArgumentException ("Update info cannot be null.");
 206
 207                         if (! opened)
 208                                 throw new InvalidOperationException ("The service has never been opened or it was closed previously.");
 209
 210                         return client.Update (updateInfo);
 211                 }
 212         }
 213 }