/// <summary>
/// If current call is cancelled invokes OnOperationCancelled, otherwise invokes ProvideFaultOrIgnoreCore.
/// </summary>
/// <param name="context">The context associated with the current call.</param>
/// <param name="error">The <see cref="Exception"/> object thrown in the course of the service operation.</param>
/// <returns>Result of ProvideFaultOrIgnoreCore if operation is not cancelled, otherwise null.</returns>
public virtual ServerFaultDetail?ProvideFaultOrIgnore(ServerCallInterceptorContext context, Exception error)
{
// call is already aborted by client, no reason to provide details
if (IsOperationCancelled(context.ServerCallContext, error))
{
OnOperationCancelled(context, error);
return(null);
}
return(ProvideFaultOrIgnoreCore(context, error));
}
/// <summary>
/// Invokes ProvideFaultOrIgnore of handlers in the pipeline ony by one until the result is not null.
/// </summary>
/// <param name="context">The context associated with the current call.</param>
/// <param name="error">The <see cref="Exception"/> object thrown in the course of the service operation.</param>
/// <returns>The first non null result provided by a handler in the pipeline, otherwise null.</returns>
protected override ServerFaultDetail?ProvideFaultOrIgnoreCore(ServerCallInterceptorContext context, Exception error)
{
for (var i = 0; i < _pipeline.Count; i++)
{
var errorHandler = _pipeline[i];
var detail = errorHandler.ProvideFaultOrIgnore(context, error);
if (detail.HasValue)
{
return(detail);
}
}
return(null);
}
public void BeforeEachTest()
{
_sut = new Mock <ServerErrorHandlerBase> {
CallBase = true
};
_tokenSource = new CancellationTokenSource();
_rpcContext = new Mock <ServerCallContext>(MockBehavior.Strict);
_rpcContext
.Protected()
.SetupGet <CancellationToken>("CancellationTokenCore")
.Returns(_tokenSource.Token);
_errorContext = new ServerCallInterceptorContext(_rpcContext.Object);
}
/// <summary> /// Allows to provide external detail to a client call. /// </summary> /// <param name="context">The context associated with the current call.</param> /// <param name="error">The <see cref="Exception"/> object thrown in the course of the service operation.</param> /// <returns>Optional error detail that is returned to the client.</returns> protected abstract ServerFaultDetail?ProvideFaultOrIgnoreCore(ServerCallInterceptorContext context, Exception error);
/// <summary>
/// Enables custom action when call is cancelled.
/// Call is already aborted by a client, no reason to provide details.
/// </summary>
/// <param name="context">The context associated with the current call.</param>
/// <param name="error">The <see cref="Exception"/> object thrown in the course of the service operation.</param>
protected virtual void OnOperationCancelled(ServerCallInterceptorContext context, Exception error)
{
}
