/// <summary>
/// サービスメソッドが呼び出されたときの処理を行います。
/// </summary>
/// <param name="context">コンテキスト</param>
/// <param name="interceptors">割込処理</param>
/// <param name="performanceListener">パフォーマンスリスナー</param>
/// <returns></returns>
private async Task OnExecutedServiceMethodAsync(ServerCallContext context, IEnumerable <IGrpcServerMethodInvokedInterceptor> interceptors, GrpcServerPerformanceListener performanceListener)
{
if (interceptors != null)
{
foreach (IGrpcServerMethodInvokedInterceptor interceptor in interceptors)
{
if (interceptor == null)
{
continue;
}
Stopwatch watch = Stopwatch.StartNew();
try
{
await interceptor.OnInvokedAsync(context).ConfigureAwait(false);
}
catch (Exception ex)
{
throw new GrpcServerMethodException(string.Format(Properties.MessageResources.ServerMethodInterceptorFailed + ex.Message, context.Method, interceptor.Name), ex, context, interceptor);
}
finally
{
if (performanceListener != null)
{
performanceListener.NotifyMethodIntercepted(context, interceptor, GrpcPerformanceListener.GetMilliseconds(watch));
}
}
}
}
}
/// <summary>
/// 例外を処理します。
/// </summary>
/// <param name="context">コンテキスト</param>
/// <param name="exceptionHandlers">例外ハンドラ</param>
/// <param name="performanceListener">パフォーマンスリスナー</param>
/// <param name="original">発生した例外</param>
/// <param name="alternate">代わりにスローする例外</param>
/// <returns>例外がラップされた場合、true を返します。</returns>
private bool HandleException(ServerCallContext context, IEnumerable <IGrpcServerMethodExceptionHandler> exceptionHandlers, GrpcServerPerformanceListener performanceListener, Exception original, out Exception alternate)
{
Exception alt = null;
if (exceptionHandlers != null)
{
foreach (IGrpcServerMethodExceptionHandler handler in exceptionHandlers)
{
if (handler == null)
{
continue;
}
Stopwatch watch = Stopwatch.StartNew();
try
{
if (handler.RelpaceException(context, original, out alt))
{
break;
}
}
catch (Exception ex)
{
throw new GrpcServerMethodException(string.Format(Properties.MessageResources.ServerMethodInterceptorFailed + ex.Message, context.Method, handler.Name), ex, context, handler);
}
finally
{
if (performanceListener != null)
{
performanceListener.NotifyMethodIntercepted(context, handler, GrpcPerformanceListener.GetMilliseconds(watch));
}
}
}
}
if (alt == null)
{
alt = original;
}
RpcException rpc = alt as RpcException;
if (rpc == null)
{
alternate = CreateRpcException(context, alt);
}
else
{
alternate = rpc;
}
return(!object.Equals(original, alternate));
}