ZacharyZhang-NY
6cc5640856
copy_store() moved into bench/scratch.py: systems.py had reached 512 lines and bench/filesize_check fails anything over 500. The move is behaviour identical, so the scale reports keep the commit stamp they were generated against — the code they describe is complete at that commit.
25 lines
908 B
Python
25 lines
908 B
Python
"""Every harness measures a copy. The frozen baseline store is cited evidence, and the product
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migrates whatever database it opens."""
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from __future__ import annotations
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import shutil
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import time
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from pathlib import Path
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def copy_store(home: Path, scratch: Path) -> tuple[Path, float]:
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"""Work on a copy: the baseline store is frozen evidence and must not be migrated in place."""
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source = home / "data" / "ely_eye.sqlite"
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if not source.is_file():
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raise SystemExit(
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f"{source}: no product database, build it with python -m bench.ingest_baseline"
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)
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data = scratch / "data"
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data.mkdir(parents=True, exist_ok=True)
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began = time.perf_counter()
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for suffix in ("", "-wal", "-shm"):
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if (path := Path(str(source) + suffix)).is_file():
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shutil.copyfile(path, data / (source.name + suffix))
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return scratch, time.perf_counter() - began
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