File size: 1,998 Bytes
881f9f2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | """Bootstrap a Smart Grid MCP server with startup diagnostics.
OpenAI Agents SDK starts MCP stdio servers as subprocesses. This wrapper keeps
server stdout reserved for JSON-RPC while writing a few startup milestones to
stderr, which lands in the harness log when a server hangs before initialize.
"""
from __future__ import annotations
import runpy
import os
import sys
from pathlib import Path
def _log(message: str) -> None:
print(f"[aat-mcp-server-bootstrap] {message}", file=sys.stderr, flush=True)
def _resolve_repo_root(target: Path) -> Path:
configured = os.environ.get("AAT_MCP_REPO_ROOT", "").strip()
if configured:
repo_root = Path(configured).resolve()
if not (repo_root / "mcp_servers").is_dir():
raise FileNotFoundError(
f"AAT_MCP_REPO_ROOT does not look like the repo root: {repo_root}"
)
return repo_root
for parent in target.parents:
if (parent / "mcp_servers").is_dir() and (parent / "scripts").is_dir():
return parent
raise FileNotFoundError(
f"Could not infer repo root for MCP server target: {target}"
)
def main() -> None:
if len(sys.argv) != 2:
raise SystemExit("usage: aat_mcp_server_bootstrap.py <server.py>")
target = Path(sys.argv[1]).resolve()
if not target.exists():
raise FileNotFoundError(f"MCP server target not found: {target}")
repo_root = _resolve_repo_root(target)
if str(repo_root) not in sys.path:
sys.path.insert(0, str(repo_root))
_log(f"python={sys.executable}")
_log(f"cwd={Path.cwd()}")
_log(f"target={target}")
namespace = runpy.run_path(str(target), run_name="__aat_mcp_server__")
server = namespace.get("mcp")
if server is None:
raise RuntimeError(
f"{target} did not define a global FastMCP object named 'mcp'"
)
_log("server module imported; starting stdio loop")
server.run()
if __name__ == "__main__":
main()
|