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// Licensed to the Apache Software Foundation(ASF) under one
// or more contributor license agreements.See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
using System;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Thrift.Protocols;
using Thrift.Transports.Client;
namespace Thrift.Transports.Server
{
// ReSharper disable once InconsistentNaming
public class THttpServerTransport
{
protected const string ContentType = "application/x-thrift";
private readonly ILogger _logger;
private readonly RequestDelegate _next;
protected Encoding Encoding = Encoding.UTF8;
protected ITProtocolFactory InputProtocolFactory;
protected ITProtocolFactory OutputProtocolFactory;
protected ITAsyncProcessor Processor;
public THttpServerTransport(ITAsyncProcessor processor, RequestDelegate next, ILoggerFactory loggerFactory)
: this(processor, new TBinaryProtocol.Factory(), next, loggerFactory)
{
}
public THttpServerTransport(ITAsyncProcessor processor, ITProtocolFactory protocolFactory, RequestDelegate next,
ILoggerFactory loggerFactory)
: this(processor, protocolFactory, protocolFactory, next, loggerFactory)
{
}
public THttpServerTransport(ITAsyncProcessor processor, ITProtocolFactory inputProtocolFactory,
ITProtocolFactory outputProtocolFactory, RequestDelegate next, ILoggerFactory loggerFactory)
{
if (loggerFactory == null)
{
throw new ArgumentNullException(nameof(loggerFactory));
}
Processor = processor ?? throw new ArgumentNullException(nameof(processor));
InputProtocolFactory = inputProtocolFactory ?? throw new ArgumentNullException(nameof(inputProtocolFactory));
OutputProtocolFactory = outputProtocolFactory ?? throw new ArgumentNullException(nameof(outputProtocolFactory));
_next = next;
_logger = loggerFactory.CreateLogger<THttpServerTransport>();
}
public async Task Invoke(HttpContext context)
{
context.Response.ContentType = ContentType;
await ProcessRequestAsync(context, context.RequestAborted); //TODO: check for correct logic
}
public async Task ProcessRequestAsync(HttpContext context, CancellationToken cancellationToken)
{
var transport = new TStreamClientTransport(context.Request.Body, context.Response.Body);
try
{
var input = InputProtocolFactory.GetProtocol(transport);
var output = OutputProtocolFactory.GetProtocol(transport);
while (await Processor.ProcessAsync(input, output, cancellationToken))
{
}
}
catch (TTransportException)
{
// Client died, just move on
}
finally
{
transport.Close();
}
}
}
}
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