CODEWITHSUNDEEP
nservicebus
Slava
Slava

Reputation: 6640

NServiceBus Tutorial Demo fails

I'm starting to learn NServiceBus.

First thing I read is We show how NServiceBus guarantees reliability and extensibility, OK :)

Downloaded RetailDemo tutorial solution from NServiceBus website https://docs.particular.net/tutorials/quickstart/

Ran it, it opens 3 console apps ClientUI, Sales, Billing. It is supposed to send a message from ClinetUI to Sales and Billing.

However the Sales app is failing with this details (and next time doesnt work anymore even when just started):

2018-03-15 14:31:47.771 INFO  DefaultFactory Logging to 'C:\Users\username\Projects\Tutorials\RetailDemo\Sales\bin\Debug\net461\' with level Info
2018-03-15 14:31:48.014 INFO  NServiceBus.LicenseManager No valid license could be found, falling back to trial license with start date '3/12/2018'

2018-03-15 14:31:48.114 INFO  NServiceBus.PerformanceCounterHelper NServiceBus performance counter for '# of msgs pulled from the input queue /sec' is not set up correctly. To rectify this problem, consult the NServiceBus performance counters documentation.
2018-03-15 14:31:48.121 INFO  NServiceBus.PerformanceCounterHelper NServiceBus performance counter for '# of msgs successfully processed / sec' is not set up correctly. To rectify this problem, consult the NServiceBus performance counters documentation.
2018-03-15 14:31:48.128 INFO  NServiceBus.PerformanceCounterHelper NServiceBus performance counter for '# of msgs failures / sec' is not set up correctly. To rectify this problem, consult the NServiceBus performance counters documentation.
Press Enter to exit.
2018-03-15 14:31:48.365 INFO  Sales.PlaceOrderHandler Received PlaceOrder, OrderId = d299afed-5b85-4d74-97e8-0d48d9bcd653
2018-03-15 14:31:48.371 INFO  Sales.PlaceOrderHandler Publishing OrderPlaced, OrderId = d299afed-5b85-4d74-97e8-0d48d9bcd653
2018-03-15 14:31:48.495 FATAL NServiceBus Failure while trying to process C:\Users\username\Projects\Tutorials\RetailDemo\.learningtransport\Sales\f37361c2-e95e-4a8a-be81-29a72574c646.metadata.txt
System.IO.IOException: Access to the path 'C:\Users\username\Projects\Tutorials\RetailDemo\.learningtransport\Sales\.pending\c687e34a-4a0e-405a-bce2-25515b419778' is denied.
   at System.IO.Directory.InternalMove(String sourceDirName, String destDirName, Boolean checkHost)
   at NServiceBus.DirectoryBasedTransaction.Commit()
   at NServiceBus.LearningTransportMessagePump.<ProcessFile>d__9.MoveNext()
2018-03-15 14:31:48.503 INFO  NServiceBus.Unicast.UnicastBus Initiating shutdown.
2018-03-15 14:31:48.517 INFO  NServiceBus.Unicast.UnicastBus Shutdown complete.

I guess the key reason is

2018-03-15 14:31:48.495 FATAL NServiceBus Failure while trying to process C:\Users\username\Projects\Tutorials\RetailDemo\.learningtransport\Sales\f37361c2-e95e-4a8a-be81-29a72574c646.metadata.txt
System.IO.IOException: Access to the path 'C:\Users\username\Projects\Tutorials\RetailDemo\.learningtransport\Sales\.pending\c687e34a-4a0e-405a-bce2-25515b419778' is denied.

Question - whats wrong? access is not denied, nothing holds this folder or file.

What can I do to continue learning this framework, if their demo solution fails?

Upvotes: 0

Views: 190

Answers (1)

Sean Feldman
Sean Feldman

Reputation: 25994

It appears to work fine.

Exception you see in the stacktrace is coming from NServiceBus.DirectoryBasedTransaction.Commit() and is caused by Directory.Move(). That's a file system call, which clearly indicates that the access to .pending\c687e34a-4a0e-405a-bce2-25515b419778 was denied.

The reason for that could vary. It could be that a previous run was unsuccessful and the folder/file is locked up. You could use a tool like Microsoft/SysInternals Process Explorer to find out what process is causing the lock. Could also try it on another machine.

Upvotes: 1

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