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hermes-agent/acp_adapter/entry.py

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"""CLI entry point for the hermes-agent ACP adapter.
Loads environment variables from ``~/.hermes/.env``, configures logging
to write to stderr (so stdout is reserved for ACP JSON-RPC transport),
and starts the ACP agent server.
Usage::
python -m acp_adapter.entry
# or
hermes acp
# or
hermes-acp
"""
import asyncio
import logging
import os
import sys
from pathlib import Path
def _setup_logging() -> None:
"""Route all logging to stderr so stdout stays clean for ACP stdio."""
handler = logging.StreamHandler(sys.stderr)
handler.setFormatter(
logging.Formatter(
"%(asctime)s [%(levelname)s] %(name)s: %(message)s",
datefmt="%Y-%m-%d %H:%M:%S",
)
)
root = logging.getLogger()
root.handlers.clear()
root.addHandler(handler)
root.setLevel(logging.INFO)
# Quiet down noisy libraries
logging.getLogger("httpx").setLevel(logging.WARNING)
logging.getLogger("httpcore").setLevel(logging.WARNING)
logging.getLogger("openai").setLevel(logging.WARNING)
def _load_env() -> None:
"""Load .env from HERMES_HOME (default ``~/.hermes``)."""
from dotenv import load_dotenv
hermes_home = Path(os.getenv("HERMES_HOME", Path.home() / ".hermes"))
env_file = hermes_home / ".env"
if env_file.exists():
try:
load_dotenv(dotenv_path=env_file, encoding="utf-8")
except UnicodeDecodeError:
load_dotenv(dotenv_path=env_file, encoding="latin-1")
logging.getLogger(__name__).info("Loaded env from %s", env_file)
else:
logging.getLogger(__name__).info(
"No .env found at %s, using system env", env_file
)
def main() -> None:
"""Entry point: load env, configure logging, run the ACP agent."""
_setup_logging()
_load_env()
logger = logging.getLogger(__name__)
logger.info("Starting hermes-agent ACP adapter")
# Ensure the project root is on sys.path so ``from run_agent import AIAgent`` works
project_root = str(Path(__file__).resolve().parent.parent)
if project_root not in sys.path:
sys.path.insert(0, project_root)
import acp
from .server import HermesACPAgent
agent = HermesACPAgent()
try:
asyncio.run(acp.run_agent(agent))
except KeyboardInterrupt:
logger.info("Shutting down (KeyboardInterrupt)")
except Exception:
logger.exception("ACP agent crashed")
sys.exit(1)
if __name__ == "__main__":
main()