More detail Session dependency checks

[fregataa]

Main idea

Currently, Session dependency check has only steps of checking "Sessions.result" column of depending sessions.
The value of result is SUCCESS if the session's main kernel finishes its batch job finish without any error.
Else, the result would be fail, which means the batch job occurs any error.

We could improve the dependency check logic to control session creation flow with conditions.
I suggest to implement like below.

1. Add a condition field to the session dependency (or session) table. Receive it as a string that can be executed as a command in the kernel, and run as a command service in the kernel before the batch compute session ends. The command string parse and validation could be done in manager by adapting minilang. The result of this execution must be a SUCESS for the execution to be a success.
2. It would be nice to have an on_fail in the condition as well, to cover the case where the execution result is fail (in general, if the batch session occurs any error).

Reference

• AWS Sagemaker
• Azure Pipeline

Alternative ideas

No response

Anything else?

No response