protected virtual async Task SendAsync(FeignClientHttpRequest request, Func <Task> fallback)
{
try
{
await SendAsync(request)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
}
catch (TerminatedRequestException)
{
return;
}
catch (Exception ex)
{
if (fallback == null)
{
throw;
}
if (InvokeFallbackRequestPipeline(request, fallback, ex as ServiceResolveFailException))
{
throw;
}
await fallback.Invoke()
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
}
}
private async Task <HttpResponseMessage> GetResponseMessageAsync(FeignClientHttpRequest request)
{
try
{
return(await SendAsyncInternal(request)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
);
}
catch (TerminatedRequestException)
{
if (IsResponseTerminatedRequest)
{
return(null);
}
throw;
}
catch (ServiceResolveFailException)
{
throw;
}
catch (Exception ex)
{
#region ErrorRequest
ErrorRequestEventArgs <TService> errorArgs = new ErrorRequestEventArgs <TService>(this, ex);
OnErrorRequest(errorArgs);
if (errorArgs.ExceptionHandled)
{
return(null);
}
#endregion
throw;
}
}
private HttpResponseMessage GetResponseMessage(FeignClientHttpRequest request)
{
try
{
return(SendAsyncInternal(request).GetResult());
}
catch (TerminatedRequestException)
{
if (IsResponseTerminatedRequest)
{
return(null);
}
throw;
}
catch (ServiceResolveFailException)
{
throw;
}
catch (Exception ex)
{
#region ErrorRequest
ErrorRequestEventArgs <TService> errorArgs = new ErrorRequestEventArgs <TService>(this, ex);
OnErrorRequest(errorArgs);
if (errorArgs.ExceptionHandled)
{
return(null);
}
#endregion
throw;
}
}
internal FallbackRequestEventArgs(IFeignClient <TService> feignClient, FeignClientHttpRequest request, TService fallback, IFallbackProxy fallbackProxy, MethodInfo method) : base(feignClient)
{
Request = request;
Fallback = fallback;
FallbackProxy = fallbackProxy;
_method = method;
}
internal BuildingRequestEventArgs(IFeignClient <TService> feignClient, string method, Uri requestUri, IDictionary <string, string> headers, FeignClientHttpRequest request) : base(feignClient)
{
Method = method;
RequestUri = requestUri;
Headers = headers;
Request = request;
}
private HttpRequestMessage CreateRequestMessage(FeignClientHttpRequest request, HttpMethod method, Uri uri)
{
FeignHttpRequestMessage requestMessage = new FeignHttpRequestMessage(request, method, uri);
if (!string.IsNullOrWhiteSpace(request.Accept))
{
requestMessage.Headers.Accept.ParseAdd(request.Accept);
}
if (request.Headers != null && request.Headers.Length > 0)
{
foreach (var header in request.Headers)
{
string[] values = header.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (values.Length == 2)
{
requestMessage.Headers.TryAddWithoutValidation(values[0], values[1]);
}
}
}
if (request.RequestHeaderHandlers != null && request.RequestHeaderHandlers.Count > 0)
{
foreach (var handler in request.RequestHeaderHandlers)
{
handler.SetHeader(requestMessage);
}
}
return(requestMessage);
}
private TResult GetResultInternal <TResult>(FeignClientHttpRequest request, HttpResponseMessage responseMessage)
{
EnsureSuccess(request, responseMessage);
var specialResult = SpecialResults.GetSpecialResult <TResult>(responseMessage);
if (specialResult.IsSpecialResult)
{
return(specialResult.Result);
}
if (responseMessage.Content.Headers.ContentType == null && responseMessage.Content.Headers.ContentLength == 0)
{
return(default(TResult));
}
IMediaTypeFormatter mediaTypeFormatter = FeignOptions.MediaTypeFormatters.FindFormatter(responseMessage.Content.Headers.ContentType?.MediaType);
if (mediaTypeFormatter == null)
{
throw new FeignHttpRequestException(this,
responseMessage.RequestMessage as FeignHttpRequestMessage,
new HttpRequestException($"Content type '{responseMessage.Content.Headers.ContentType?.ToString()}' not supported"));
}
using (var stream = responseMessage.Content.ReadAsStreamAsync().GetResult())
{
if (stream.CanSeek)
{
return(GetResultInternal <TResult>(mediaTypeFormatter, stream, responseMessage.Content.Headers.ContentType, request.Method.ResultType));
}
using (Stream seekStream = new MemoryStream())
{
stream.CopyTo(seekStream);
seekStream.Position = 0;
return(GetResultInternal <TResult>(mediaTypeFormatter, seekStream, responseMessage.Content.Headers.ContentType, request.Method.ResultType));
}
}
}
protected virtual TResult Send <TResult>(FeignClientHttpRequest request)
{
HttpResponseMessage response = GetResponseMessage(request);
using (response)
{
return(GetResult <TResult>(request, response));
}
}
protected virtual void Send(FeignClientHttpRequest request)
{
HttpResponseMessage response = GetResponseMessage(request);
using (response)
{
//GetResult<string>(request, response);
EnsureSuccess(request, response);
}
}
public Task <string> Get()
{
FeignClientHttpRequest feignClientHttpRequest = new FeignClientHttpRequest(null, null, null, null, null)
{
CompletionOption = HttpCompletionOption.ResponseHeadersRead
};
var r = feignClientHttpRequest.ContentType;
//HttpCompletionOption = HttpCompletionOption.ResponseHeadersRead;
return(Task.FromResult("fallback_get"));
}
private async Task <TResult> GetResultInternalAsync <TResult>(FeignClientHttpRequest request, HttpResponseMessage responseMessage)
{
await EnsureSuccessAsync(request, responseMessage)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
var specialResult = await SpecialResults.GetSpecialResultAsync <TResult>(responseMessage)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
if (specialResult.IsSpecialResult)
{
return(specialResult.Result);
}
if (responseMessage.Content.Headers.ContentType == null && responseMessage.Content.Headers.ContentLength == 0)
{
return(default(TResult));
}
IMediaTypeFormatter mediaTypeFormatter = FeignOptions.MediaTypeFormatters.FindFormatter(responseMessage.Content.Headers.ContentType?.MediaType);
if (mediaTypeFormatter == null)
{
throw new FeignHttpRequestException(this,
responseMessage.RequestMessage as FeignHttpRequestMessage,
new HttpRequestException($"Content type '{responseMessage.Content.Headers.ContentType?.ToString()}' not supported"));
}
using (var stream = await responseMessage.Content.ReadAsStreamAsync()
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
)
{
if (stream.CanSeek)
{
return(GetResultInternal <TResult>(mediaTypeFormatter, stream, responseMessage.Content.Headers.ContentType, request.Method.ResultType));
}
using (Stream seekStream = new MemoryStream())
{
await stream.CopyToAsync(seekStream)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
seekStream.Position = 0;
return(GetResultInternal <TResult>(mediaTypeFormatter, seekStream, responseMessage.Content.Headers.ContentType, request.Method.ResultType));
}
}
}
/// <summary>
/// 确保响应状态正确
/// </summary>
/// <param name="request"></param>
/// <param name="responseMessage"></param>
private void EnsureSuccess(FeignClientHttpRequest request, HttpResponseMessage responseMessage)
{
if (!responseMessage.IsSuccessStatusCode)
{
string content = responseMessage.Content.ReadAsStringAsync().GetResult();
_logger?.LogError($"request on \"{responseMessage.RequestMessage.RequestUri.ToString()}\" status code : " + responseMessage.StatusCode.GetHashCode() + " content : " + content);
throw new FeignHttpRequestException(this,
responseMessage.RequestMessage as FeignHttpRequestMessage,
new HttpRequestException($"Response status code does not indicate success: {responseMessage.StatusCode.GetHashCode()} ({responseMessage.ReasonPhrase}).\r\nContent : {content}"));
}
}
public Task <JObject> GetValueAsync([PathVariable] int id, [RequestParam] string test)
{
FeignClientMethodInfo feignClientMethodInfo = new FeignClientMethodInfo();
feignClientMethodInfo.MethodId = "GetById";
if (IncludeMethodMetadata)
{
feignClientMethodInfo.MethodMetadata = typeof(FeignClientMethodInfo).GetMethod("");
}
FeignClientHttpRequest request = new FeignClientHttpRequest("", "", "", "", "");
throw new NotImplementedException();
}
/// <summary>
/// 确保响应状态正确
/// </summary>
/// <param name="request"></param>
/// <param name="responseMessage"></param>
private async Task EnsureSuccessAsync(FeignClientHttpRequest request, HttpResponseMessage responseMessage)
{
if (!responseMessage.IsSuccessStatusCode)
{
string content = await responseMessage.Content.ReadAsStringAsync()
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
_logger?.LogError($"request on \"{responseMessage.RequestMessage.RequestUri.ToString()}\" status code : " + responseMessage.StatusCode.GetHashCode() + " content : " + content);
throw new FeignHttpRequestException(this,
responseMessage.RequestMessage as FeignHttpRequestMessage,
new HttpRequestException($"Response status code does not indicate success: {responseMessage.StatusCode.GetHashCode()} ({responseMessage.ReasonPhrase}).\r\nContent : {content}"));
}
}
public void TestMethod1()
{
FeignClientHttpRequest request = new FeignClientHttpRequest(null, null, null, null, null);
request.RequestHeaderHandlers = new List <Request.Headers.IRequestHeaderHandler>();
Request.Headers.IRequestHeaderHandler requestHeaderHandler = null;
request.RequestHeaderHandlers.Add(requestHeaderHandler);
DynamicAssembly dynamicAssembly = new DynamicAssembly();
dynamicAssembly.DEBUG_MODE = true;
FeignClientHttpProxyTypeBuilder feignClientTypeBuilder = new FeignClientHttpProxyTypeBuilder(dynamicAssembly);
FeignClientTypeInfo feignClientTypeInfo = feignClientTypeBuilder.Build(typeof(ITestService));
FeignClientTypeInfo feignClientTypeInfo1 = feignClientTypeBuilder.Build(typeof(ITestControllerService));
feignClientTypeBuilder.Save();
}
protected virtual async Task <TResult> SendAsync <TResult>(FeignClientHttpRequest request)
{
HttpResponseMessage response = await GetResponseMessageAsync(request)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
using (response)
{
return(await GetResultAsync <TResult>(request, response)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
);
}
}
/// <summary>
/// 获取响应结果
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="request"></param>
/// <param name="responseMessage"></param>
/// <returns></returns>
private Task <TResult> GetResultAsync <TResult>(FeignClientHttpRequest request, HttpResponseMessage responseMessage)
{
if (responseMessage == null)
{
return(Task.FromResult(default(TResult)));
}
#region ReceivingResponse
ReceivingResponseEventArgs <TService, TResult> receivingResponseEventArgs = InvokeReceivingResponseEvent <TResult>(request, responseMessage);
//if (receivingResponseEventArgs.Result != null)
if (receivingResponseEventArgs._isSetResult)
{
return(Task.FromResult(receivingResponseEventArgs.GetResult()));
}
#endregion
return(GetResultInternalAsync <TResult>(request, responseMessage));
}
/// <summary>
/// 触发服务降级事件
/// </summary>
/// <param name="request"></param>
/// <param name="delegate"></param>
/// <param name="serviceResolveFailException"></param>
/// <returns></returns>
bool InvokeFallbackRequestPipeline(FeignClientHttpRequest request, Delegate @delegate, ServiceResolveFailException serviceResolveFailException)
{
IFallbackProxy fallbackProxy = @delegate.Target as IFallbackProxy;
FallbackRequestEventArgs <TService> eventArgs;
if (fallbackProxy == null)
{
//可能因为method parameters length=0 , 故没有生成匿名调用类
eventArgs = new FallbackRequestEventArgs <TService>(this, request, Fallback, null, @delegate.Method);
}
else
{
eventArgs = new FallbackRequestEventArgs <TService>(this, request, Fallback, fallbackProxy, null);
}
OnFallbackRequest(eventArgs);
return(eventArgs.IsTerminated);
}
protected virtual async Task SendAsync(FeignClientHttpRequest request)
{
HttpResponseMessage response = await GetResponseMessageAsync(request)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
using (response)
{
// await GetResultAsync<string>(request, response)
//#if CONFIGUREAWAIT_FALSE
// .ConfigureAwait(false)
//#endif
// ;
await EnsureSuccessAsync(request, response)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
;
}
}
protected virtual TResult Send <TResult>(FeignClientHttpRequest request, Func <TResult> fallback)
{
try
{
return(Send <TResult>(request));
}
catch (TerminatedRequestException)
{
return(default(TResult));
}
catch (Exception ex)
{
if (fallback == null)
{
throw;
}
if (InvokeFallbackRequestPipeline(request, fallback, ex as ServiceResolveFailException))
{
throw;
}
return(fallback.Invoke());
}
}
/// <summary>
/// 发送请求
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
private async Task <HttpResponseMessage> SendAsyncInternal(FeignClientHttpRequest request)
{
HttpMethod httpMethod = GetHttpMethod(request.HttpMethod);
HttpRequestMessage httpRequestMessage = CreateRequestMessage(request, httpMethod, CreateUri(BuildUri(request.Uri)));
using (httpRequestMessage)
{
// if support content
if (IsSupportContent(httpMethod))
{
HttpContent httpContent = request.GetHttpContent();
if (httpContent != null)
{
httpRequestMessage.Content = httpContent;
}
}
return(await HttpClient.SendAsync(httpRequestMessage, request.CompletionOption)
#if CONFIGUREAWAIT_FALSE
.ConfigureAwait(false)
#endif
);
}
}
protected virtual void Send(FeignClientHttpRequest request, Action fallback)
{
try
{
Send(request);
}
catch (TerminatedRequestException)
{
return;
}
catch (Exception ex)
{
if (fallback == null)
{
throw;
}
if (InvokeFallbackRequestPipeline(request, fallback, ex as ServiceResolveFailException))
{
throw;
}
fallback.Invoke();
}
}
internal ReceivingResponseEventArgs(IFeignClient <TService> feignClient, FeignClientHttpRequest request, HttpResponseMessage responseMessage, Type resultType) : base(feignClient)
{
Request = request;
ResponseMessage = responseMessage;
ResultType = resultType;
}
private ReceivingResponseEventArgs <TService, TResult> InvokeReceivingResponseEvent <TResult>(FeignClientHttpRequest request, HttpResponseMessage responseMessage)
{
ReceivingResponseEventArgs <TService, TResult> receivingResponseEventArgs = new ReceivingResponseEventArgs <TService, TResult>(this, request, responseMessage);
OnReceivingResponse(receivingResponseEventArgs);
return(receivingResponseEventArgs);
}
