private async Task ProcessFileWithTransaction(string filePath, string messageId)
{
using (var transaction = new DirectoryBasedTransaction(_messageDirectory))
{
transaction.BeginTransaction(filePath);
var messageFile = File.ReadAllLines(transaction.FileToProcess);
var bodyPath = messageFile.First();
var messageHeaderJson = string.Join("", messageFile.Skip(1));
var messageHeaders = HeaderSerializer.DeSerialize(messageHeaderJson);
if (RemoveFileIfExpired(messageHeaders, transaction))
{
return;
}
var fileContents = File.ReadAllBytes(bodyPath);
var transportTransaction = new TransportTransaction();
transportTransaction.Set(transaction);
var shouldCommit = await HandleMessageWithRetries(messageId, messageHeaders, fileContents, transportTransaction, 1);
if (shouldCommit)
{
transaction.Commit();
}
}
}
public Task Dispatch(TransportOperations outgoingMessages, TransportTransaction transaction, ContextBag context)
{
foreach (var operation in outgoingMessages.UnicastTransportOperations)
{
var destinationBasePath = DirectoryBuilder.BuildBasePath(operation.Destination);
var nativeMessageId = Guid.NewGuid().ToString();
var bodyPath = Path.Combine(destinationBasePath, ".bodies", $"{nativeMessageId}.xml");
var bodyDirectory = Path.GetDirectoryName(bodyPath);
if (bodyDirectory != null)
{
if (!Directory.Exists(bodyDirectory))
{
Directory.CreateDirectory(bodyDirectory);
}
}
File.WriteAllBytes(bodyPath, operation.Message.Body);
var messageContents = new List <string>
{
bodyPath,
HeaderSerializer.Serialize(operation.Message.Headers)
};
var messagePath = Path.Combine(destinationBasePath, $"{nativeMessageId}.txt");
// Write to a temp file first so an atomic move can be done.
// This avoids the file being locked when the receiver triest to process it.
var tempFilePath = Path.GetTempFileName();
File.WriteAllLines(tempFilePath, messageContents);
File.Move(tempFilePath, messagePath);
}
return(Task.CompletedTask);
}