//private static Int32 TransactionNumber = 0;
/// <summary>
/// Handles the specific domain event.
/// </summary>
/// <param name="domainEvent">The domain event.</param>
/// <param name="cancellationToken">The cancellation token.</param>
private async Task HandleSpecificDomainEvent(FileLineAddedEvent domainEvent,
CancellationToken cancellationToken)
{
ProcessTransactionForFileLineRequest request = new ProcessTransactionForFileLineRequest(domainEvent.FileId, domainEvent.LineNumber, domainEvent.FileLine);
await this.Mediator.Send(request, cancellationToken);
}
public void ProcessTransactionForFileLineRequest_CanBeCreated_IsCreated()
{
ProcessTransactionForFileLineRequest processTransactionForFileLineRequest =
new ProcessTransactionForFileLineRequest(TestData.FileId, TestData.LineNumber, TestData.FileLine);
processTransactionForFileLineRequest.FileId.ShouldBe(TestData.FileId);
processTransactionForFileLineRequest.LineNumber.ShouldBe(TestData.LineNumber);
processTransactionForFileLineRequest.FileLine.ShouldBe(TestData.FileLine);
}
/// <summary>
/// Handles the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns></returns>
/// <exception cref="System.NotSupportedException">File Id [{request.FileId}] has no lines added</exception>
/// <exception cref="NotFoundException">
/// File Line Number {request.LineNumber} not found in File Id {request.FileId}
/// or
/// No file profile found with Id {fileDetails.FileProfileId}
/// or
/// Merchant not found with Id {fileDetails.MerchantId} on estate Id {fileDetails.EstateId}
/// or
/// No contracts found for Merchant Id {fileDetails.MerchantId} on estate Id {fileDetails.EstateId}
/// or
/// No merchant contract for operator Id {fileProfile.OperatorName} found for Merchant Id {merchant.MerchantId}
/// or
/// No variable value product found on the merchant contract for operator Id {fileProfile.OperatorName} and Merchant Id {merchant.MerchantId}
/// </exception>
public async Task <Unit> Handle(ProcessTransactionForFileLineRequest request,
CancellationToken cancellationToken)
{
// Get the file aggregate, this tells us the file profile information
FileAggregate fileAggregate = await this.FileAggregateRepository.GetLatestVersion(request.FileId, cancellationToken);
FileDetails fileDetails = fileAggregate.GetFile();
if (fileDetails.FileLines.Any() == false)
{
throw new NotSupportedException($"File Id [{request.FileId}] has no lines added");
}
FileLine fileLine = fileDetails.FileLines.SingleOrDefault(f => f.LineNumber == request.LineNumber);
if (fileLine == null)
{
throw new NotFoundException($"File Line Number {request.LineNumber} not found in File Id {request.FileId}");
}
if (fileLine.ProcessingResult != ProcessingResult.NotProcessed)
{
// Line already processed
return(new Unit());
}
FileProfile fileProfile = await this.FileProcessorManager.GetFileProfile(fileDetails.FileProfileId, cancellationToken);
if (fileProfile == null)
{
throw new NotFoundException($"No file profile found with Id {fileDetails.FileProfileId}");
}
// Determine if we need to actually process this file line
if (this.FileLineCanBeIgnored(fileLine.LineData, fileProfile.FileFormatHandler))
{
// Write something to aggregate to say line was explicity ignored
fileAggregate.RecordFileLineAsIgnored(fileLine.LineNumber);
await this.FileAggregateRepository.SaveChanges(fileAggregate, cancellationToken);
return(new Unit());
}
// need to now parse the line (based on the file format), this builds the metadata
Dictionary <String, String> transactionMetadata = this.ParseFileLine(fileLine.LineData, fileProfile.FileFormatHandler);
if (transactionMetadata == null)
{
// Line failed to parse so record this
fileAggregate.RecordFileLineAsRejected(fileLine.LineNumber, "Invalid Format");
await this.FileAggregateRepository.SaveChanges(fileAggregate, cancellationToken);
return(new Unit());
}
// Add the file data to the request metadata
transactionMetadata.Add("FileId", request.FileId.ToString());
transactionMetadata.Add("FileLineNumber", fileLine.LineNumber.ToString());
String operatorName = fileProfile.OperatorName;
if (transactionMetadata.ContainsKey("OperatorName"))
{
// extract the value
operatorName = transactionMetadata["OperatorName"];
transactionMetadata = transactionMetadata.Where(x => x.Key != "OperatorName").ToDictionary(x => x.Key, x => x.Value);
}
this.TokenResponse = await this.GetToken(cancellationToken);
Interlocked.Increment(ref FileRequestHandler.TransactionNumber);
// Get the merchant details
MerchantResponse merchant = await this.EstateClient.GetMerchant(this.TokenResponse.AccessToken, fileDetails.EstateId, fileDetails.MerchantId, cancellationToken);
if (merchant == null)
{
throw new NotFoundException($"Merchant not found with Id {fileDetails.MerchantId} on estate Id {fileDetails.EstateId}");
}
List <ContractResponse> contracts = await this.EstateClient.GetMerchantContracts(this.TokenResponse.AccessToken, fileDetails.EstateId, fileDetails.MerchantId, cancellationToken);
if (contracts.Any() == false)
{
throw new NotFoundException($"No contracts found for Merchant Id {fileDetails.MerchantId} on estate Id {fileDetails.EstateId}");
}
ContractResponse?contract = null;
if (fileProfile.OperatorName == "Voucher")
{
contract = contracts.SingleOrDefault(c => c.Description.Contains(operatorName));
}
else
{
contract = contracts.SingleOrDefault(c => c.OperatorName == operatorName);
}
if (contract == null)
{
throw new NotFoundException($"No merchant contract for operator Id {operatorName} found for Merchant Id {merchant.MerchantId}");
}
ContractProduct?product = contract.Products.SingleOrDefault(p => p.Value == null); // TODO: Is this enough or should the name be used and stored in file profile??
if (product == null)
{
throw new NotFoundException($"No variable value product found on the merchant contract for operator Id {fileProfile.OperatorName} and Merchant Id {merchant.MerchantId}");
}
// Build a transaction request message
SaleTransactionRequest saleTransactionRequest = new SaleTransactionRequest
{
EstateId = fileDetails.EstateId,
MerchantId = fileDetails.MerchantId,
TransactionDateTime = fileDetails.FileReceivedDateTime,
TransactionNumber = FileRequestHandler.TransactionNumber.ToString(),
TransactionType = "Sale",
ContractId = contract.ContractId,
DeviceIdentifier = merchant.Devices.First().Value,
OperatorIdentifier = contract.OperatorName,
ProductId = product.ProductId,
AdditionalTransactionMetadata = transactionMetadata,
};
SerialisedMessage serialisedRequestMessage = new SerialisedMessage
{
Metadata = new Dictionary <String, String>
{
{ "estate_id", fileDetails.EstateId.ToString() },
{ "merchant_id", fileDetails.MerchantId.ToString() }
},
SerialisedData = JsonConvert.SerializeObject(saleTransactionRequest, new JsonSerializerSettings
{
TypeNameHandling = TypeNameHandling.All
})
};
Logger.LogInformation(serialisedRequestMessage.SerialisedData);
// Send request to transaction processor
SerialisedMessage serialisedResponseMessage = await this.TransactionProcessorClient.PerformTransaction(this.TokenResponse.AccessToken, serialisedRequestMessage, cancellationToken);
// Get the sale transaction response
SaleTransactionResponse saleTransactionResponse = JsonConvert.DeserializeObject <SaleTransactionResponse>(serialisedResponseMessage.SerialisedData);
if (saleTransactionResponse.ResponseCode == "0000")
{
// record response against file line in file aggregate
fileAggregate.RecordFileLineAsSuccessful(request.LineNumber, saleTransactionResponse.TransactionId);
}
else
{
fileAggregate.RecordFileLineAsFailed(request.LineNumber, saleTransactionResponse.TransactionId, saleTransactionResponse.ResponseCode, saleTransactionResponse.ResponseMessage);
}
// Save changes to file aggregate
// TODO: Add retry round this save (maybe 3 retries)
await this.FileAggregateRepository.SaveChanges(fileAggregate, cancellationToken);
return(new Unit());
}
