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| # Copyright (c) Meta Platforms, Inc. and affiliates. | |
| # All rights reserved. | |
| # | |
| # This source code is licensed under the BSD-style license found in the | |
| # LICENSE file in the root directory of this source tree. | |
| """ | |
| Echo Environment HTTP Client. | |
| This module provides the client for connecting to an Echo Environment server | |
| over HTTP. | |
| """ | |
| from typing import Any, Dict | |
| from core.client_types import StepResult | |
| from core.env_server.types import State | |
| from core.http_env_client import HTTPEnvClient | |
| from .models import EchoAction, EchoObservation | |
| class EchoEnv(HTTPEnvClient[EchoAction, EchoObservation]): | |
| """ | |
| HTTP client for the Echo Environment. | |
| This client connects to an EchoEnvironment HTTP server and provides | |
| methods to interact with it: reset(), step(), and state access. | |
| Example: | |
| >>> # Connect to a running server | |
| >>> client = EchoEnv(base_url="http://localhost:8000") | |
| >>> result = client.reset() | |
| >>> print(result.observation.echoed_message) | |
| >>> | |
| >>> # Send a message | |
| >>> result = client.step(EchoAction(message="Hello!")) | |
| >>> print(result.observation.echoed_message) | |
| >>> print(result.reward) | |
| Example with Docker: | |
| >>> # Automatically start container and connect | |
| >>> client = EchoEnv.from_docker_image("echo-env:latest") | |
| >>> result = client.reset() | |
| >>> result = client.step(EchoAction(message="Test")) | |
| """ | |
| def _step_payload(self, action: EchoAction) -> Dict: | |
| """ | |
| Convert EchoAction to JSON payload for step request. | |
| Args: | |
| action: EchoAction instance | |
| Returns: | |
| Dictionary representation suitable for JSON encoding | |
| """ | |
| return { | |
| "message": action.message, | |
| } | |
| def _parse_result(self, payload: Dict) -> StepResult[EchoObservation]: | |
| """ | |
| Parse server response into StepResult[EchoObservation]. | |
| Args: | |
| payload: JSON response from server | |
| Returns: | |
| StepResult with EchoObservation | |
| """ | |
| obs_data = payload.get("observation", {}) | |
| observation = EchoObservation( | |
| echoed_message=obs_data.get("echoed_message", ""), | |
| message_length=obs_data.get("message_length", 0), | |
| done=payload.get("done", False), | |
| reward=payload.get("reward"), | |
| metadata=obs_data.get("metadata", {}), | |
| ) | |
| return StepResult( | |
| observation=observation, | |
| reward=payload.get("reward"), | |
| done=payload.get("done", False), | |
| ) | |
| def _parse_state(self, payload: Dict) -> State: | |
| """ | |
| Parse server response into State object. | |
| Args: | |
| payload: JSON response from /state endpoint | |
| Returns: | |
| State object with episode_id and step_count | |
| """ | |
| return State( | |
| episode_id=payload.get("episode_id"), | |
| step_count=payload.get("step_count", 0), | |
| ) | |
| def from_hub(cls, space_id: str, **kwargs: Any) -> "EchoEnv": | |
| """Launch the Space from Hugging Face Hub and return an `EchoEnv` client.""" | |
| return super().from_hub(space_id, **kwargs) | |