RutujaPatil29/gridworld-env

1# Copyright (c) Meta Platforms, Inc. and affiliates.2# All rights reserved.3#4# This source code is licensed under the BSD-style license found in the5# LICENSE file in the root directory of this source tree.6 7"""8FastAPI application for the Gridworld Env Environment.9 10This module creates an HTTP server that exposes the GridworldEnvironment11over HTTP and WebSocket endpoints, compatible with EnvClient.12 13Endpoints:14    - POST /reset: Reset the environment15    - POST /step: Execute an action16    - GET /state: Get current environment state17    - GET /schema: Get action/observation schemas18    - WS /ws: WebSocket endpoint for persistent sessions19 20Usage:21    # Development (with auto-reload):22    uvicorn server.app:app --reload --host 0.0.0.0 --port 800023 24    # Production:25    uvicorn server.app:app --host 0.0.0.0 --port 8000 --workers 426 27    # Or run directly:28    python -m server.app29"""30 31try:32    from openenv.core.env_server.http_server import create_app33except Exception as e:  # pragma: no cover34    raise ImportError(35        "openenv is required for the web interface. Install dependencies with '\n    uv sync\n'"36    ) from e37 38try:39    from ..models import GridworldAction, GridworldObservation40    from .gridworld_env_environment import GridworldEnvironment41except ModuleNotFoundError:42    from models import GridworldAction, GridworldObservation43    from server.gridworld_env_environment import GridworldEnvironment44 45 46# Create the app with web interface and README integration47app = create_app(48    GridworldEnvironment,49    GridworldAction,50    GridworldObservation,51    env_name="gridworld_env",52    max_concurrent_envs=1,  # increase this number to allow more concurrent WebSocket sessions53)54 55 56def main(host: str = "0.0.0.0", port: int = 8000):57    """58    Entry point for direct execution via uv run or python -m.59 60    This function enables running the server without Docker:61        uv run --project . server62        uv run --project . server --port 800163        python -m gridworld_env.server.app64 65    Args:66        host: Host address to bind to (default: "0.0.0.0")67        port: Port number to listen on (default: 8000)68 69    For production deployments, consider using uvicorn directly with70    multiple workers:71        uvicorn gridworld_env.server.app:app --workers 472    """73    import uvicorn74 75    uvicorn.run(app, host=host, port=port)76 77 78if __name__ == "__main__":79    import argparse80 81    parser = argparse.ArgumentParser()82    parser.add_argument("--port", type=int, default=8000)83    args = parser.parse_args()84    main(port=args.port)85