Decide on the setup of the seeded episodes

[ondrej-lukas]

Current Status

The environment can be started with a starting seed, which is used for setting:

• Starting state of the random generator of random
  • Impacts starting/goal positions (when keyword random is used)
  • Impacts the global defender decision if used
  • Impacts action success (not used atm)
• Starting state of the random generator of np.random
  • Not impacting anything AFAIK
• Starting state of the random generator of Faker
  • Impacts the re-mapping of IPs

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Proposed Design

• Starting seed remains unchanged.
• When the agent is requesting a reset with ResetGame, there are 2 parameters:
  • seed: int = None
  • change_ips: bool = False

The following table shows the result on the environment (agents 1 & 2 show the behavior when multiple agents are present):

Starting seed	A1 seed	A1 change_ips	A2 seed	A2 change_ips	Changed seed game	Changed seed topology	Changed topology
42	1	TRUE	1	TRUE	1	1	TRUE
42	1	TRUE	1	FALSE	1	??? (NONE)	FALSE
42	1	TRUE	2	TRUE	NONE	NONE	??? (FALSE)
42	1	TRUE	2	FALSE	NONE	NONE	FALSE

This design allows:

• Seeding every episode and topology change (for testing, consistent evaluation).
• Setting a custom seed to the random generators and then continuing with it for the rest of the game.
• Setting a random seed for the game WITHOUT changing the topology (reproducibility within a fixed topology).

It does not allow:

• Changing the seed of the topology WITHOUT changing the seed of the rest.