from enum import Enum from typing import Any, Dict, Type, Union from stable_baselines3.common.callbacks import BaseCallback from stable_baselines3.common.logger import HParam from freqtrade.freqai.RL.BaseEnvironment import BaseActions, BaseEnvironment class TensorboardCallback(BaseCallback): """ Custom callback for plotting additional values in tensorboard and episodic summary reports. """ def __init__(self, verbose=1, actions: Type[Enum] = BaseActions): super(TensorboardCallback, self).__init__(verbose) self.model: Any = None self.logger = None # type: Any self.training_env: BaseEnvironment = None # type: ignore self.actions: Type[Enum] = actions def _on_training_start(self) -> None: hparam_dict = { "algorithm": self.model.__class__.__name__, "learning_rate": self.model.learning_rate, # "gamma": self.model.gamma, # "gae_lambda": self.model.gae_lambda, # "batch_size": self.model.batch_size, # "n_steps": self.model.n_steps, } metric_dict: Dict[str, Union[float, int]] = { "eval/mean_reward": 0, "rollout/ep_rew_mean": 0, "rollout/ep_len_mean": 0, "train/value_loss": 0, "train/explained_variance": 0, } self.logger.record( "hparams", HParam(hparam_dict, metric_dict), exclude=("stdout", "log", "json", "csv"), ) def _on_step(self) -> bool: local_info = self.locals["infos"][0] tensorboard_metrics = self.training_env.get_attr("tensorboard_metrics")[0] for info in local_info: if info not in ["episode", "terminal_observation"]: self.logger.record(f"_info/{info}", local_info[info]) for info in tensorboard_metrics: if info in [action.name for action in self.actions]: self.logger.record(f"_actions/{info}", tensorboard_metrics[info]) else: self.logger.record(f"_custom/{info}", tensorboard_metrics[info]) return True