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43c68a3 | 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 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | from __future__ import annotations
import argparse
import datetime as dt
import os
import re
import sys
import time
import urllib.error
import urllib.request
from concurrent.futures import ThreadPoolExecutor, as_completed
from dataclasses import dataclass
from pathlib import Path
BASE_URL_DEFAULT = "https://axavier.org/UnitCommitment.jl/0.4/instances"
@dataclass(frozen=True)
class Task:
case: str
date: dt.date
url: str
out_path: Path
def _iter_dates(start: dt.date, end: dt.date):
if end < start:
raise ValueError("end_date must be >= start_date")
cur = start
one = dt.timedelta(days=1)
while cur <= end:
yield cur
cur += one
def _default_instances_md_path() -> Path:
here = Path(__file__).resolve()
project_root = here.parents[2]
return project_root / "docs" / "src" / "guides" / "instances.md"
def _parse_matpower_cases_from_instances_md(instances_md_path: Path) -> list[str]:
text = instances_md_path.read_text(encoding="utf-8")
pattern = re.compile(r"matpower/(case[^/\s`]+)/\d{4}-\d{2}-\d{2}")
cases = sorted(set(pattern.findall(text)))
if not cases:
raise RuntimeError(f"No MATPOWER cases found in {instances_md_path}")
return cases
def _download_one(task: Task, timeout_s: float, retries: int, force: bool) -> tuple[str, str | None]:
task.out_path.parent.mkdir(parents=True, exist_ok=True)
if task.out_path.exists() and not force and task.out_path.stat().st_size > 0:
return ("skipped", None)
tmp_path = task.out_path.with_suffix(task.out_path.suffix + ".part")
req = urllib.request.Request(task.url, headers={"User-Agent": "UnitCommitment downloader"})
last_err = None
for attempt in range(retries + 1):
try:
with urllib.request.urlopen(req, timeout=timeout_s) as resp:
with open(tmp_path, "wb") as f:
while True:
chunk = resp.read(1024 * 256)
if not chunk:
break
f.write(chunk)
os.replace(tmp_path, task.out_path)
return ("downloaded", None)
except (urllib.error.URLError, urllib.error.HTTPError, TimeoutError, OSError) as e:
last_err = e
try:
if tmp_path.exists():
tmp_path.unlink()
except OSError:
pass
if attempt < retries:
time.sleep(min(10.0, 0.5 * (2**attempt)))
continue
return ("failed", f"{type(last_err).__name__}: {last_err}")
return ("failed", f"{type(last_err).__name__}: {last_err}")
def _build_tasks(
base_url: str,
out_dir: Path,
cases: list[str],
start_date: dt.date,
end_date: dt.date,
) -> list[Task]:
tasks: list[Task] = []
for case in cases:
for d in _iter_dates(start_date, end_date):
date_str = d.isoformat()
url = f"{base_url}/matpower/{case}/{date_str}.json.gz"
out_path = out_dir / case / f"{date_str}.json.gz"
tasks.append(Task(case=case, date=d, url=url, out_path=out_path))
return tasks
def _parse_date(s: str) -> dt.date:
return dt.date.fromisoformat(s)
def main(argv: list[str]) -> int:
parser = argparse.ArgumentParser()
parser.add_argument("--instances-md", type=Path, default=_default_instances_md_path())
parser.add_argument("--base-url", type=str, default=BASE_URL_DEFAULT)
parser.add_argument(
"--out-dir",
type=Path,
default=(Path(__file__).resolve().parents[2] / "instances" / "matpower"),
)
parser.add_argument("--start-date", type=_parse_date, default=dt.date(2017, 1, 1))
parser.add_argument("--end-date", type=_parse_date, default=dt.date(2017, 12, 31))
parser.add_argument("--workers", type=int, default=min(32, (os.cpu_count() or 4) * 4))
parser.add_argument("--timeout", type=float, default=60.0)
parser.add_argument("--retries", type=int, default=3)
parser.add_argument("--force", action="store_true")
parser.add_argument("--dry-run", action="store_true")
parser.add_argument("--list-cases", action="store_true")
args = parser.parse_args(argv)
instances_md_path: Path = args.instances_md
if not instances_md_path.exists():
raise FileNotFoundError(str(instances_md_path))
cases = _parse_matpower_cases_from_instances_md(instances_md_path)
if args.list_cases:
for c in cases:
print(c)
return 0
out_dir: Path = args.out_dir
tasks = _build_tasks(
base_url=args.base_url.rstrip("/"),
out_dir=out_dir,
cases=cases,
start_date=args.start_date,
end_date=args.end_date,
)
print(f"cases={len(cases)} files={len(tasks)} out_dir={out_dir}")
if args.dry_run:
for t in tasks[:10]:
print(f"{t.url} -> {t.out_path}")
if len(tasks) > 10:
print("...")
return 0
downloaded = 0
skipped = 0
failed = 0
total = len(tasks)
t0 = time.time()
last_print = 0.0
with ThreadPoolExecutor(max_workers=max(1, args.workers)) as ex:
fut_to_task = {
ex.submit(_download_one, t, args.timeout, args.retries, args.force): t for t in tasks
}
for i, fut in enumerate(as_completed(fut_to_task), start=1):
status, err = fut.result()
if status == "downloaded":
downloaded += 1
elif status == "skipped":
skipped += 1
else:
failed += 1
task = fut_to_task[fut]
sys.stderr.write(f"FAILED {task.url} -> {task.out_path} ({err})\n")
now = time.time()
if now - last_print >= 1.0 or i == total:
elapsed = max(0.001, now - t0)
rate = i / elapsed
print(
f"{i}/{total} downloaded={downloaded} skipped={skipped} failed={failed} rate={rate:.1f}/s"
)
last_print = now
if failed:
return 2
return 0
if __name__ == "__main__":
raise SystemExit(main(sys.argv[1:]))
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