/// <summary>
/// Implementation of substraction method.
/// </summary>
/// <param name="substraction"></param>
/// <param name="trackingId"></param>
/// <returns></returns>
public SubstractionResponseModel Substraction(SubstractionModel substraction, string trackingId)
{
//calculates the difference between the inputs.
int difference = substraction.Minuend - substraction.Subtrahend;
LogModel logModel = new LogModel()
{
Operation = "Sub",
Calculation = $"{ substraction.Minuend} - {substraction.Subtrahend} = {difference}",
Date = DateTime.Now
};
//if there is a tracking id, save operation in journal.
if (!string.IsNullOrEmpty(trackingId))
{
Journal.Add(new KeyValuePair <string, LogModel>(trackingId, logModel));
}
// saves data in the log
Log.Information($"Calculator::Sub:: {logModel}");
return(new SubstractionResponseModel()
{
Difference = difference
});
}
public ActionResult Sub([FromBody] SubstractionModel substraction)
{
try
{
// Verifies if the model is valid, if not, returns a bad request response.
// the verification is based on the attributes defined in the DTO.
if (!ModelState.IsValid)
{
MicroserviceException badRequestResponse = new MicroserviceException()
{
ErrorCode = "InternalError",
ErrorMessage = "Unable to process request:" + ModelState.Values,
ErrorStatus = 400
};
return(BadRequest(badRequestResponse));
}
else
{
// Finds the value of the header with the tracking id
StringValues trackingId;
Request.Headers.TryGetValue("X-Evi-Tracking-Id", out trackingId);
var response = _calculatorService.Substraction(substraction, trackingId);
return(Ok(response));
}
}
// Catches and manages all of the server's errors and responds the client with a controlled object.
catch (Exception err)
{
MicroserviceException internalServerErrorResponse = new MicroserviceException()
{
ErrorCode = "InternalError",
ErrorMessage = "An unexpected error condition was triggered which made impossible to fulfill the request. Please try again or contact support" + err.InnerException,
ErrorStatus = 500
};
Log.Error($"Calculator::Exception:: {internalServerErrorResponse}");
return(StatusCode(500, internalServerErrorResponse));
}
}