[ray] Pyarmor compatibility

[PidgeyBE]

What is the problem?

When trying to execute pyarmor obfuscated scripts in ray, we are facing issues with the python dis package. We are using Actors. Depending on how Actors are instantiated, the error occurs at a different place:

• When using the @ray.remote decorator, python crashes here: https://github.com/ray-project/ray/blob/master/python/ray/cloudpickle/cloudpickle.py#L440.
• When using ray.remote(ActorClass).remote() python crashes here: https://github.com/ray-project/ray/blob/master/python/ray/function_manager.py#L118. When removing the dis-calls in function_manager.py, our obfuscated code runs fine.

To fix the issue with the decorator, I think we need a fix at Pyarmor side. That's why I filed an issue there: dashingsoft/pyarmor#231
But even without a fix at pyarmor side, which might be not feasible, we can run obfuscated code in ray if we don't use the decorator and the function_manager is patched, so it doesn't use dis anymore. Is this feasible?

Ray version and other system information (Python version, TensorFlow version, OS):

• ray==0.8.3
• pyarmor==6.1.0
• Ubuntu 16

Reproduction (REQUIRED)

see dashingsoft/pyarmor#231. The second example is the one I'd love to see fixed in ray!

If we cannot run your script, we cannot fix your issue.

• I have verified my script runs in a clean environment and reproduces the issue.
• I have verified the issue also occurs with the latest wheels.

Best regards, Pieterjan

[PidgeyBE]

Meanwhile the issue will be avoidable in one of the upcoming pyarmor releases, by making sure opcodes are not changed during the obfuscation process. It's less secure, but it works.
So discarding the use of the dis package would still be very helpful!