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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.
"""
FastAPI application for the Echo Environment.
This module creates an HTTP server that exposes the EchoEnvironment
over HTTP and WebSocket endpoints, compatible with EnvClient.
Usage:
# Development (with auto-reload):
uvicorn server.app:app --reload --host 0.0.0.0 --port 8000
# Production:
uvicorn server.app:app --host 0.0.0.0 --port 8000 --workers 4
# Or run directly:
uv run --project . server
"""
# Support both in-repo and standalone imports
try:
# In-repo imports (when running from OpenEnv repository)
from openenv.core.env_server.http_server import create_app
from ..models import EchoAction, EchoObservation
from .echo_environment import EchoEnvironment
except ImportError:
# Standalone imports (when environment is standalone with openenv from pip)
from openenv.core.env_server.http_server import create_app
from models import EchoAction, EchoObservation
from server.echo_environment import EchoEnvironment
# Create the app with web interface and README integration
# Pass the class (factory) instead of an instance for WebSocket session support
app = create_app(EchoEnvironment, EchoAction, EchoObservation, env_name="echo_env")
def main():
"""
Entry point for direct execution via uv run or python -m.
This function enables running the server without Docker:
uv run --project . server
python -m envs.echo_env.server.app
openenv serve echo_env
"""
import uvicorn
uvicorn.run(app, host="0.0.0.0", port=8000)
if __name__ == "__main__":
main()
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