private IEnumerable<OutputMember> TryExecute(Func<IEnumerable<OutputMember>> operationBuilder)
{
try
{
return operationBuilder();
}
catch (Exception ex)
{
var validationException = ex.GetBaseException() as ValidationException;
if (validationException != null)
{
var responseBody = new ResponseForProcessingError(validationException);
LogBadRequest(responseBody);
return new[]
{
new OutputMember
{
Value =
new OperationResult.BadRequest
{
ResponseResource = responseBody
}
}
};
}
throw;
}
}
private void RespondWithBadRequest(HttpActionExecutedContext context)
{
var validationException = context.Exception as ValidationException;
var response = new ResponseForProcessingError(validationException);
LogBadRequest("Request pre-condition(s) failed", context, response);
// we intentionally don't use context.Request.CreateErrorResponse, so that we can customise the response body. Otherwise it's too limited.
context.Response = context.Request.CreateResponse(HttpStatusCode.BadRequest, response);
}
