feat: bootstrap static musl build pipeline for iperf3

scripts/sync_iperf3_version.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+import argparse
+import json
+import re
+import sys
+import urllib.request
+from pathlib import Path
+
+VERSION_FILE = Path("versions/iperf3.version")
+LATEST_RELEASE_URL = "https://api.github.com/repos/esnet/iperf/releases/latest"
+
+
+def fetch_latest_version() -> str:
+    req = urllib.request.Request(
+        LATEST_RELEASE_URL,
+        headers={
+            "Accept": "application/vnd.github+json",
+            "User-Agent": "static-musl-builds-updater",
+        },
+    )
+    with urllib.request.urlopen(req, timeout=30) as resp:
+        data = json.load(resp)
+    tag = data["tag_name"].strip()
+    version = re.sub(r"^v", "", tag)
+    if not re.fullmatch(r"[0-9]+(?:\.[0-9]+)*", version):
+        raise ValueError(f"Unexpected iperf3 version format: {version!r}")
+    return version
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--update-file", action="store_true", help="Write latest version into versions/iperf3.version if changed")
+    args = parser.parse_args()
+
+    latest = fetch_latest_version()
+    current = VERSION_FILE.read_text(encoding="utf-8").strip() if VERSION_FILE.exists() else ""
+
+    print(f"current={current or '<missing>'}")
+    print(f"latest={latest}")
+
+    if current == latest:
+        print("status=up-to-date")
+        return 0
+
+    print("status=update-available")
+    if args.update_file:
+        VERSION_FILE.parent.mkdir(parents=True, exist_ok=True)
+        VERSION_FILE.write_text(latest + "\n", encoding="utf-8")
+        print(f"updated_file={VERSION_FILE}")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())