public void ElaborationStarted(ICommand command, DateTime startAt)
{
_originalTracker.ElaborationStarted(command, startAt);
}
public async Task Handle(T message)
{
LoggerThreadContextManager.MarkCommandExecution(message);
if (Logger.IsDebugEnabled)
{
Logger.DebugFormat("Handling {0} {1}", message.GetType().FullName, message.MessageId);
}
int i = 0;
bool retry = false;
var notifyTo = message.GetContextData(MessagesConstants.ReplyToHeader);
CommandHandled replyCommandHandled = null;
Boolean success = false;
Exception lastException = null;
do
{
try
{
_messagesTracker.ElaborationStarted(message, DateTime.UtcNow);
_commandHandler.HandleAsync(message).Wait(); //need to wait, or you will free the worker rebus thread and you will dispatch many concurrent handler.
_messagesTracker.Completed(message, DateTime.UtcNow);
if (notifyTo != null && message.GetContextData("disable-success-reply", "false") != "true")
{
replyCommandHandled = new CommandHandled(
notifyTo,
message.MessageId,
CommandHandled.CommandResult.Handled,
message.Describe()
);
replyCommandHandled.CopyHeaders(message);
_bus.Reply(replyCommandHandled).Wait();
}
success = true;
retry = false;
}
catch (Exception ex)
{
lastException = ex;
if (!_commandExecutionExceptionHelper.Handle(ex, message, i, out retry, out replyCommandHandled))
{
//Handler is not able to handle the exception, simply retrhow
_messagesTracker.Failed(message, DateTime.UtcNow, ex);
LoggerThreadContextManager.ClearMarkCommandExecution();
throw;
}
}
i++; //if we reach here we need to increment the counter.
} while (retry);
if (!success)
{
_messagesTracker.Failed(message, DateTime.UtcNow, lastException);
if (notifyTo != null && replyCommandHandled != null)
{
await _bus.Reply(replyCommandHandled).ConfigureAwait(false);
}
}
if (Logger.IsDebugEnabled)
{
Logger.DebugFormat("Handled {0} {1} {2}", message.GetType().FullName, message.MessageId, message.Describe());
}
LoggerThreadContextManager.ClearMarkCommandExecution();
}
public void Handle(T message)
{
try
{
Logger.MarkCommandExecution(message);
if (Logger.IsDebugEnabled)
{
Logger.DebugFormat("Handling {0} {1}", message.GetType().FullName, message.MessageId);
}
int i = 0;
bool done = false;
var notifyTo = message.GetContextData(MessagesConstants.ReplyToHeader);
while (!done && i < 100)
{
try
{
_messagesTracker.ElaborationStarted(message.MessageId, DateTime.UtcNow);
_commandHandler.Handle(message);
_messagesTracker.Completed(message.MessageId, DateTime.UtcNow);
done = true;
if (notifyTo != null && message.GetContextData("disable-success-reply", "false") != "true")
{
var replyCommand = new CommandHandled(
notifyTo,
message.MessageId,
CommandHandled.CommandResult.Handled,
message.Describe()
);
replyCommand.CopyHeaders(message);
_bus.Reply(replyCommand);
}
}
catch (ConflictingCommandException ex)
{
MetricsHelper.MarkConcurrencyException();
// retry
if (Logger.IsInfoEnabled)
{
Logger.InfoFormat(ex, "Handled {0} {1} [{2}], concurrency exception. Retry count: {3}", message.GetType().FullName, message.MessageId, message.Describe(), i);
}
if (i++ > 5)
{
Thread.Sleep(new Random(DateTime.Now.Millisecond).Next(i * 10));
}
}
catch (DomainException ex)
{
MetricsHelper.MarkDomainException();
done = true;
_messagesTracker.Failed(message.MessageId, DateTime.UtcNow, ex);
if (notifyTo != null)
{
var replyCommand = new CommandHandled(
notifyTo,
message.MessageId,
CommandHandled.CommandResult.Failed,
message.Describe(),
ex.Message,
true
);
replyCommand.CopyHeaders(message);
_bus.Reply(replyCommand);
}
_logger.ErrorFormat(ex, "DomainException on command {0} [MessageId: {1}] : {2} : {3}", message.GetType(), message.MessageId, message.Describe(), ex.Message);
}
catch (Exception ex)
{
_logger.ErrorFormat(ex, "Generic Exception on command {0} [MessageId: {1}] : {2} : {3}", message.GetType(), message.MessageId, message.Describe(), ex.Message);
_messagesTracker.Failed(message.MessageId, DateTime.UtcNow, ex);
throw; //rethrow exception.
}
}
if (done == false)
{
_logger.ErrorFormat("Too many conflict on command {0} [MessageId: {1}] : {2}", message.GetType(), message.MessageId, message.Describe());
var exception = new Exception("Command failed. Too many Conflicts");
_messagesTracker.Failed(message.MessageId, DateTime.UtcNow, exception);
}
if (Logger.IsDebugEnabled)
{
Logger.DebugFormat("Handled {0} {1} {3}", message.GetType().FullName, message.MessageId, message.Describe());
}
}
finally
{
Logger.ClearCommandExecution();
}
}