public override int SaveChanges()
{
try
{
return(base.SaveChanges());
}
catch (Exception ex)
{
throw _exceptionMapper.Map(ex);
}
}
/// <summary>
/// Handle a thrown exception.
/// </summary>
/// <param name="edi">The thrown exception info.</param>
/// <param name="context">The http context.</param>
protected virtual async Task HandleExceptionAsync(ExceptionDispatchInfo edi, HttpContext context)
{
// We're only interested in the root cause of the exception.
// Unpack the base exception in case of an aggregate exception.
if (edi.SourceException is AggregateException)
{
edi = ExceptionDispatchInfo.Capture((edi.SourceException as AggregateException).GetBaseException());
}
// If the exception is not of type TException, throw it upwards.
if (edi.SourceException is not TException)
{
edi.Throw();
}
// We can't do anything if the response has already started, just abort.
// This means headers have already been sent to the client.
if (context.Response.HasStarted)
{
_logger.LogError(edi.SourceException, "Could not do anything, response has already started");
edi.Throw();
}
// Save original context path for later restoration in case we can't handle the exception.
var originalPath = context.Request.Path;
try
{
// Prepare the context for being passed back up the chain.
ClearHttpContext(context);
// Add a generated error message to the http context.
context.Features.Set(_mapper.Map(edi.SourceException as TException));
// Pass back up the chain to reach the error handling controller.
context.Request.Path = _options.ErrorControllerPath ?? throw new InvalidOperationException("No error handler path specified");
await _next(context);
return;
}
catch (Exception e)
{
// Only log, we re-throw later.
_logger.LogError(e, "Could not handle exception, re-throwing original");
}
finally
{
// Set the context path to what it was.
context.Request.Path = originalPath;
}
// If we reach this we couldn't handle the exception.
// Re-throw it upwards.
edi.Throw();
}
public void Intercept(IInvocation invocation)
{
try
{
invocation.Proceed();
}
catch (Exception e)
{
throw _exceptionMapper.Map(e);
}
}
public void Intercept(IInvocation invocation)
{
try
{
invocation.Proceed();
}
catch (Exception e)
{
// .NET 4.5 feature: Capture an exception and re-throw it without changing the stack trace
ExceptionDispatchInfo.Capture(_exceptionMapper.Map(e)).Throw();
}
}
public IActionResult Error()
{
var context = HttpContext.Features.Get <IExceptionHandlerFeature>();
var exception = context?.Error;
if (exception is null)
{
return(NotFound());
}
IErrorData error = _exceptionMapper.Map(exception);
_logger.LogError(exception, error.Message);
var model = new ErrorVM
{
Message = error.Message,
Data = error.Data
};
return(StatusCode(error.StatusCode, model));
}
