RestObjectPosterResponse.cs 4.2 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSim Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.IO;
  29. using System.Net;
  30. using System.Text;
  31. using System.Xml;
  32. using System.Xml.Serialization;
  33. namespace OpenSim.Framework.Servers
  34. {
  35. public delegate void ReturnResponse<T>(T reponse);
  36. /// <summary>
  37. /// Makes an asynchronous REST request with a callback to invoke with the response.
  38. /// </summary>
  39. public class RestObjectPosterResponse<TResponse>
  40. {
  41. // private static readonly log4net.ILog m_log
  42. // = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
  43. public ReturnResponse<TResponse> ResponseCallback;
  44. public void BeginPostObject<TRequest>(string requestUrl, TRequest obj)
  45. {
  46. BeginPostObject("POST", requestUrl, obj);
  47. }
  48. public void BeginPostObject<TRequest>(string verb, string requestUrl, TRequest obj)
  49. {
  50. Type type = typeof (TRequest);
  51. WebRequest request = WebRequest.Create(requestUrl);
  52. request.Method = verb;
  53. request.ContentType = "text/xml";
  54. MemoryStream buffer = new MemoryStream();
  55. XmlWriterSettings settings = new XmlWriterSettings();
  56. settings.Encoding = Encoding.UTF8;
  57. using (XmlWriter writer = XmlWriter.Create(buffer, settings))
  58. {
  59. XmlSerializer serializer = new XmlSerializer(type);
  60. serializer.Serialize(writer, obj);
  61. writer.Flush();
  62. }
  63. int length = (int) buffer.Length;
  64. request.ContentLength = length;
  65. Stream requestStream = request.GetRequestStream();
  66. requestStream.Write(buffer.ToArray(), 0, length);
  67. IAsyncResult result = request.BeginGetResponse(AsyncCallback, request);
  68. }
  69. private void AsyncCallback(IAsyncResult result)
  70. {
  71. WebRequest request = (WebRequest) result.AsyncState;
  72. using (WebResponse resp = request.EndGetResponse(result))
  73. {
  74. TResponse deserial;
  75. XmlSerializer deserializer = new XmlSerializer(typeof (TResponse));
  76. Stream stream = resp.GetResponseStream();
  77. // This is currently a bad debug stanza since it gobbles us the response...
  78. // StreamReader reader = new StreamReader(stream);
  79. // m_log.DebugFormat("[REST OBJECT POSTER RESPONSE]: Received {0}", reader.ReadToEnd());
  80. deserial = (TResponse) deserializer.Deserialize(stream);
  81. if (deserial != null && ResponseCallback != null)
  82. {
  83. ResponseCallback(deserial);
  84. }
  85. }
  86. }
  87. }
  88. }