OpenVSP MCP Server

"""Utilities for read-only OpenVSP inspection.""" from __future__ import annotations import subprocess import tempfile from pathlib import Path from xml.etree import ElementTree as ET from .core import OPENVSP_BIN, _OK_EXIT_CODES, _write_script from .models import OpenVSPInspectResponse, OpenVSPRequest def describe_geometry(geometry_file: str) -> OpenVSPInspectResponse: """Run OpenVSP in describe mode and parse high-level geometry information.""" with tempfile.TemporaryDirectory(prefix="openvsp_mcp_describe_") as tmpdir: temp_request = OpenVSPRequest( geometry_file=geometry_file, set_commands=[], run_vspaero=False, case_name="describe", ) script_path = _write_script(temp_request, Path(tmpdir)) result = subprocess.run( [OPENVSP_BIN, "-script", str(script_path)], check=False, capture_output=True, ) if result.returncode not in _OK_EXIT_CODES: message = result.stderr.decode("utf-8", errors="ignore").strip() if not message: message = result.stdout.decode("utf-8", errors="ignore").strip() raise RuntimeError(message or "OpenVSP describe run failed") tree = ET.parse(geometry_file) root = tree.getroot() geom_ids: list[str] = [] wing_names: list[str] = [] info_lines: list[str] = [] for geom in root.findall(".//Geom"): name_elem = geom.find("ParmContainer/Name") geom_name = name_elem.text if name_elem is not None else "" id_elem = geom.find("ParmContainer/ID") geom_id = id_elem.text if id_elem is not None else "" type_elem = geom.find("GeomBase/TypeName") geom_type = type_elem.text if type_elem is not None else "" if geom_id: geom_ids.append(geom_id) if geom_type.lower() == "wing" and geom_name: wing_names.append(geom_name) info_lines.append(f"{geom_id or 'UNKNOWN'}:{geom_name or 'Unnamed'}:{geom_type or 'Unknown'}") return OpenVSPInspectResponse( geom_ids=geom_ids, wing_names=wing_names, info_log="\n".join(info_lines), ) __all__ = ["describe_geometry"]