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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
namespace OpenSim.Framework.Servers
{
public delegate void ReturnResponse<T>(T reponse);
/// <summary>
/// Makes an asynchronous REST request with a callback to invoke with the response.
/// </summary>
public class RestObjectPosterResponse<TResponse>
{
// private static readonly log4net.ILog m_log
// = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
public ReturnResponse<TResponse> ResponseCallback;
public void BeginPostObject<TRequest>(string requestUrl, TRequest obj)
{
BeginPostObject("POST", requestUrl, obj);
}
public void BeginPostObject<TRequest>(string verb, string requestUrl, TRequest obj)
{
Type type = typeof (TRequest);
WebRequest request = WebRequest.Create(requestUrl);
request.Method = verb;
request.ContentType = "text/xml";
MemoryStream buffer = new MemoryStream();
XmlWriterSettings settings = new XmlWriterSettings();
settings.Encoding = Encoding.UTF8;
using (XmlWriter writer = XmlWriter.Create(buffer, settings))
{
XmlSerializer serializer = new XmlSerializer(type);
serializer.Serialize(writer, obj);
writer.Flush();
}
int length = (int) buffer.Length;
request.ContentLength = length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(buffer.ToArray(), 0, length);
IAsyncResult result = request.BeginGetResponse(AsyncCallback, request);
}
private void AsyncCallback(IAsyncResult result)
{
WebRequest request = (WebRequest) result.AsyncState;
using (WebResponse resp = request.EndGetResponse(result))
{
TResponse deserial;
XmlSerializer deserializer = new XmlSerializer(typeof (TResponse));
Stream stream = resp.GetResponseStream();
// This is currently a bad debug stanza since it gobbles us the response...
// StreamReader reader = new StreamReader(stream);
// m_log.DebugFormat("[REST OBJECT POSTER RESPONSE]: Received {0}", reader.ReadToEnd());
deserial = (TResponse) deserializer.Deserialize(stream);
if (deserial != null && ResponseCallback != null)
{
ResponseCallback(deserial);
}
}
}
}
}
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