#2350: split observations into smaller files
This commit is contained in:
Czar Echavez
177
src/primaite/game/agent/observations/file_system_observations.py
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177
src/primaite/game/agent/observations/file_system_observations.py
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from typing import Dict, List, Optional, Tuple, TYPE_CHECKING
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from gymnasium import spaces
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from primaite import getLogger
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from primaite.game.agent.observations.observations import AbstractObservation
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from primaite.game.agent.utils import access_from_nested_dict, NOT_PRESENT_IN_STATE
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_LOGGER = getLogger(__name__)
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if TYPE_CHECKING:
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from primaite.game.game import PrimaiteGame
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class FileObservation(AbstractObservation):
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"""Observation of a file on a node in the network."""
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def __init__(self, where: Optional[Tuple[str]] = None) -> None:
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"""
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Initialise file observation.
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:param where: Store information about where in the simulation state dictionary to find the relevant information.
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Optional. If None, this corresponds that the file does not exist and the observation will be populated with
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zeroes.
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A typical location for a file looks like this:
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['network','nodes',<node_hostname>,'file_system', 'folders',<folder_name>,'files',<file_name>]
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:type where: Optional[List[str]]
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"""
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super().__init__()
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self.where: Optional[Tuple[str]] = where
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self.default_observation: spaces.Space = {"health_status": 0}
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"Default observation is what should be returned when the file doesn't exist, e.g. after it has been deleted."
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def observe(self, state: Dict) -> Dict:
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"""Generate observation based on the current state of the simulation.
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:param state: Simulation state dictionary
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:type state: Dict
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:return: Observation
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:rtype: Dict
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"""
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if self.where is None:
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return self.default_observation
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file_state = access_from_nested_dict(state, self.where)
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if file_state is NOT_PRESENT_IN_STATE:
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return self.default_observation
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return {"health_status": file_state["visible_status"]}
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@property
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def space(self) -> spaces.Space:
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"""Gymnasium space object describing the observation space shape.
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:return: Gymnasium space
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:rtype: spaces.Space
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"""
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return spaces.Dict({"health_status": spaces.Discrete(6)})
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@classmethod
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def from_config(cls, config: Dict, game: "PrimaiteGame", parent_where: List[str] = None) -> "FileObservation":
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"""Create file observation from a config.
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:param config: Dictionary containing the configuration for this file observation.
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:type config: Dict
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:param game: _description_
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:type game: PrimaiteGame
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:param parent_where: _description_, defaults to None
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:type parent_where: _type_, optional
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:return: _description_
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:rtype: _type_
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"""
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return cls(where=parent_where + ["files", config["file_name"]])
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class FolderObservation(AbstractObservation):
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"""Folder observation, including files inside of the folder."""
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def __init__(
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self, where: Optional[Tuple[str]] = None, files: List[FileObservation] = [], num_files_per_folder: int = 2
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) -> None:
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"""Initialise folder Observation, including files inside the folder.
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:param where: Where in the simulation state dictionary to find the relevant information for this folder.
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A typical location for a file looks like this:
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['network','nodes',<node_hostname>,'file_system', 'folders',<folder_name>]
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:type where: Optional[List[str]]
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:param max_files: As size of the space must remain static, define max files that can be in this folder
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, defaults to 5
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:type max_files: int, optional
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:param file_positions: Defines the positioning within the observation space of particular files. This ensures
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that even if new files are created, the existing files will always occupy the same space in the observation
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space. The keys must be between 1 and max_files. Providing file_positions will reserve a spot in the
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observation space for a file with that name, even if it's temporarily deleted, if it reappears with the same
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name, it will take the position defined in this dict. Defaults to {}
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:type file_positions: Dict[int, str], optional
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"""
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super().__init__()
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self.where: Optional[Tuple[str]] = where
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self.files: List[FileObservation] = files
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while len(self.files) < num_files_per_folder:
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self.files.append(FileObservation())
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while len(self.files) > num_files_per_folder:
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truncated_file = self.files.pop()
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msg = f"Too many files in folder observation. Truncating file {truncated_file}"
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_LOGGER.warning(msg)
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self.default_observation = {
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"health_status": 0,
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"FILES": {i + 1: f.default_observation for i, f in enumerate(self.files)},
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}
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def observe(self, state: Dict) -> Dict:
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"""Generate observation based on the current state of the simulation.
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:param state: Simulation state dictionary
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:type state: Dict
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:return: Observation
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:rtype: Dict
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"""
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if self.where is None:
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return self.default_observation
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folder_state = access_from_nested_dict(state, self.where)
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if folder_state is NOT_PRESENT_IN_STATE:
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return self.default_observation
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health_status = folder_state["health_status"]
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obs = {}
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obs["health_status"] = health_status
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obs["FILES"] = {i + 1: file.observe(state) for i, file in enumerate(self.files)}
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return obs
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@property
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def space(self) -> spaces.Space:
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"""Gymnasium space object describing the observation space shape.
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:return: Gymnasium space
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:rtype: spaces.Space
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"""
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return spaces.Dict(
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{
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"health_status": spaces.Discrete(6),
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"FILES": spaces.Dict({i + 1: f.space for i, f in enumerate(self.files)}),
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}
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)
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@classmethod
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def from_config(
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cls, config: Dict, game: "PrimaiteGame", parent_where: Optional[List[str]], num_files_per_folder: int = 2
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) -> "FolderObservation":
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"""Create folder observation from a config. Also creates child file observations.
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:param config: Dictionary containing the configuration for this folder observation. Includes the name of the
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folder and the files inside of it.
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:type config: Dict
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:param game: Reference to the PrimaiteGame object that spawned this observation.
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:type game: PrimaiteGame
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:param parent_where: Where in the simulation state dictionary to find the information about this folder's
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parent node. A typical location for a node ``where`` can be:
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['network','nodes',<node_hostname>,'file_system']
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:type parent_where: Optional[List[str]]
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:param num_files_per_folder: How many spaces for files are in this folder observation (to preserve static
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observation size) , defaults to 2
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:type num_files_per_folder: int, optional
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:return: Constructed folder observation
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:rtype: FolderObservation
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"""
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where = parent_where + ["folders", config["folder_name"]]
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file_configs = config["files"]
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files = [FileObservation.from_config(config=f, game=game, parent_where=where) for f in file_configs]
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return cls(where=where, files=files, num_files_per_folder=num_files_per_folder)
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