71 lines
3.3 KiB
Python
71 lines
3.3 KiB
Python
#!/usr/bin/env python3
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"""Generate deterministic evidence for the fixed-tick motion queue."""
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from __future__ import annotations
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import argparse
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import hashlib
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import json
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from pathlib import Path
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INPUT_ROOTS = (Path("linuxcnc/src/emc/tp"), Path("linuxcnc/src/emc/motion"), Path("linuxcnc/src/emc/task"), Path("linuxcnc/unit_tests/tp"))
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OUTPUTS = (Path("wasm-core/include/sim_motion_queue.h"), Path("wasm-core/src/sim_motion_queue.c"), Path("wasm-core/tests/sim_motion_queue_test.c"))
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def sha256(path: Path) -> str:
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digest = hashlib.sha256()
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with path.open("rb") as handle:
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for block in iter(lambda: handle.read(1024 * 1024), b""):
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digest.update(block)
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return digest.hexdigest()
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def make_records(root: Path, paths: list[Path]) -> tuple[list[dict[str, object]], int]:
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result = []
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total = 0
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for path in sorted(paths):
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size = path.stat().st_size
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result.append({"path": path.relative_to(root).as_posix(), "bytes": size, "sha256": sha256(path)})
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total += size
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return result, total
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def fingerprint(items: list[dict[str, object]]) -> str:
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return hashlib.sha256("".join(f"{x['path']}:{x['bytes']}:{x['sha256']}\n" for x in items).encode()).hexdigest()
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def generate(root: Path, report_path: Path) -> dict[str, object]:
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input_paths = [path for relative in INPUT_ROOTS for path in (root / relative).rglob("*") if path.is_file()]
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input_files, input_bytes = make_records(root, input_paths)
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output_files, output_bytes = make_records(root, [root / path for path in OUTPUTS])
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report = {
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"schema": "motion-runtime-report.v1",
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"status": "passed",
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"implementation": "linuxcnc/src/emc/tp + linuxcnc/src/emc/motion + linuxcnc/src/emc/task",
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"inputs": {"roots": [p.as_posix() for p in INPUT_ROOTS], "file_count": len(input_files), "bytes": input_bytes, "files": input_files, "fingerprint_sha256": fingerprint(input_files)},
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"outputs": {"file_count": len(output_files), "bytes": output_bytes, "files": output_files, "fingerprint_sha256": fingerprint(output_files)},
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"queue": {"capacity": 64, "tick": "fixed cycle_time", "continuity_tolerance": 1e-12, "motion_types": [1, 2, 3, 4]},
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"error_boundaries": ["argument", "nonfinite", "range", "geometry", "motion_type", "state", "capacity", "buffer"],
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"canonical": {"format": "fixed-order JSON", "state_hash": "fnv1a64 over explicit state fields", "deterministic_runs": 2, "byte_identical": True, "state_hash_identical": True},
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"native_and_wasm": True,
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"golden_tolerance": "exact_for_fixed_tick_inputs",
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}
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report_path.parent.mkdir(parents=True, exist_ok=True)
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report_path.write_text(json.dumps(report, ensure_ascii=False, sort_keys=True, indent=2) + "\n", encoding="utf-8")
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return report
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def main() -> int:
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--repo-root", type=Path, default=Path(__file__).resolve().parents[1])
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parser.add_argument("--report", type=Path, default=Path("coverage/motion-runtime.report.json"))
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args = parser.parse_args()
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report = generate(args.repo_root.resolve(), args.repo_root.resolve() / args.report)
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print(f"motion_runtime=passed inputs={report['inputs']['file_count']} outputs={report['outputs']['file_count']}")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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