ceph/src/jaegertracing/thrift/lib/csharp/src/Transport/THttpTaskAsyncHandler.cs

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements. See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership. The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License. You may obtain a copy of the License at
   9  *
  10  *   http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing,
  13  * software distributed under the License is distributed on an
  14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  15  * KIND, either express or implied. See the License for the
  16  * specific language governing permissions and limitations
  17  * under the License.
  18  *
  19  * Contains some contributions under the Thrift Software License.
  20  * Please see doc/old-thrift-license.txt in the Thrift distribution for
  21  * details.
  22  */
  23
  24 using System.Threading.Tasks;
  25 using System.Web;
  26 using Thrift.Protocol;
  27
  28 namespace Thrift.Transport
  29 {
  30     /// <summary>
  31     /// An async task based HTTP handler for processing thrift services.
  32     /// </summary>
  33     public class THttpTaskAsyncHandler : HttpTaskAsyncHandler
  34     {
  35         private readonly TAsyncProcessor _processor;
  36         private readonly TProtocolFactory _inputProtocolFactory;
  37         private readonly TProtocolFactory _outputProtocolFactory;
  38
  39         /// <summary>
  40         /// Initializes a new instance of the <see cref="THttpTaskAsyncHandler"/> class
  41         /// using the <see cref="TBinaryProtocol.Factory"/> for both input and output streams.
  42         /// </summary>
  43         /// <param name="processor">The async processor implementation.</param>
  44         public THttpTaskAsyncHandler(TAsyncProcessor processor)
  45             : this(processor, new TBinaryProtocol.Factory())
  46         {
  47         }
  48
  49         /// <summary>
  50         /// Initializes a new instance of the <see cref="THttpTaskAsyncHandler"/> class
  51         /// using <paramref name="protocolFactory"/> for both input and output streams.
  52         /// </summary>
  53         /// <param name="processor">The async processor implementation.</param>
  54         /// <param name="protocolFactory">The protocol factory.</param>
  55         public THttpTaskAsyncHandler(TAsyncProcessor processor, TProtocolFactory protocolFactory)
  56             : this(processor, protocolFactory, protocolFactory)
  57         {
  58         }
  59
  60         /// <summary>
  61         /// Initializes a new instance of the <see cref="THttpTaskAsyncHandler"/> class.
  62         /// </summary>
  63         /// <param name="processor">The async processor implementation.</param>
  64         /// <param name="inputProtocolFactory">The input protocol factory.</param>
  65         /// <param name="outputProtocolFactory">The output protocol factory.</param>
  66         public THttpTaskAsyncHandler(TAsyncProcessor processor, TProtocolFactory inputProtocolFactory,
  67             TProtocolFactory outputProtocolFactory)
  68         {
  69             _processor = processor;
  70             _inputProtocolFactory = inputProtocolFactory;
  71             _outputProtocolFactory = outputProtocolFactory;
  72         }
  73
  74         public override async Task ProcessRequestAsync(HttpContext context)
  75         {
  76             var transport = new TStreamTransport(context.Request.InputStream, context.Response.OutputStream);
  77
  78             try
  79             {
  80                 var input = _inputProtocolFactory.GetProtocol(transport);
  81                 var output = _outputProtocolFactory.GetProtocol(transport);
  82
  83                 while (await _processor.ProcessAsync(input, output))
  84                 {
  85                 }
  86             }
  87             catch (TTransportException)
  88             {
  89                 // Client died, just move on
  90             }
  91             finally
  92             {
  93                 transport.Close();
  94             }
  95         }
  96     }
  97 }