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import argparse, csv, json, os, random, re, sys, threading, time
from concurrent.futures import ThreadPoolExecutor, as_completed
import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
from lxml import etree
BASE = "https://digitallibrary.un.org"
OUT = os.environ.get("UNSC_CORPUS_ROOT", ".")
PROXY_FILE = os.environ.get("UNSC_PROXY_FILE", "proxies.txt")
MARC_NS = {"m": "http://www.loc.gov/MARC21/slim"}
CATEGORIES = {
"resolutions": {"p": "191:S/RES", "pdfs": True},
"presidential_statements": {"p": "191:S/PRST", "pdfs": True},
"verbatim_debates": {"p": "191:S/PV", "pdfs": True},
"voting_data": {"p": '981:"Security Council"', "cc": "Voting Data",
"pdfs": False, "voting": True},
}
YEAR_START = 1946
YEAR_END = 2026
RG = 200
REQ_RETRY_PROXIES = 5
_print_lock = threading.Lock()
def log(msg):
with _print_lock:
print(f"[{time.strftime('%H:%M:%S')}] {msg}", flush=True)
class ProxyPool:
MIN_INTERVAL = 0.40
MAX_INTERVAL = 2.00
PENALTY = 12.0
def __init__(self, path):
self.sessions = []
for line in open(path):
line = line.strip()
if not line:
continue
ip, port, user, pw = line.split(":")
url = f"http://{user}:{pw}@{ip}:{port}"
s = requests.Session()
retry = Retry(total=2, backoff_factor=1.0,
status_forcelist=[500, 502, 503, 504],
allowed_methods=["GET"])
s.mount("https://", HTTPAdapter(max_retries=retry, pool_maxsize=4))
s.proxies = {"http": url, "https": url}
self.sessions.append(s)
if not self.sessions:
raise SystemExit("no proxies loaded")
self._lock = threading.Lock()
self._next_start = 0.0
self._penalty_until = 0.0
self._interval = self.MIN_INTERVAL
self._ok_streak = 0
self._n429 = 0
log(f"loaded {len(self.sessions)} proxies")
def _throttle(self):
with self._lock:
now = time.time()
start = max(now, self._next_start, self._penalty_until)
self._next_start = start + self._interval
wait = start - time.time()
if wait > 0:
time.sleep(wait)
def _on_ok(self):
with self._lock:
self._ok_streak += 1
if self._ok_streak >= 20 and self._interval > self.MIN_INTERVAL:
self._interval = max(self.MIN_INTERVAL, self._interval * 0.85)
self._ok_streak = 0
def _penalize(self):
with self._lock:
self._penalty_until = time.time() + self.PENALTY
self._interval = min(self.MAX_INTERVAL, self._interval * 1.5)
self._ok_streak = 0
self._n429 += 1
def get(self, url, params=None, timeout=90, attempts=8):
last = None
for _ in range(attempts):
self._throttle()
s = random.choice(self.sessions)
try:
r = s.get(url, params=params, timeout=timeout)
if r.status_code == 429:
self._penalize()
last = requests.HTTPError("429")
continue
r.raise_for_status()
self._on_ok()
return r
except Exception as e:
last = e
continue
raise last
def sub(field, code):
el = field.find(f"m:subfield[@code='{code}']", MARC_NS)
return el.text.strip() if el is not None and el.text else None
def subs(field, code):
return [e.text.strip() for e in field.findall(f"m:subfield[@code='{code}']", MARC_NS)
if e.text and e.text.strip()]
def parse_record(rec):
def cf(tag):
el = rec.find(f"m:controlfield[@tag='{tag}']", MARC_NS)
return el.text.strip() if el is not None and el.text else None
def df(tag):
return rec.findall(f"m:datafield[@tag='{tag}']", MARC_NS)
out = {"record_id": cf("001")}
f191 = df("191")
out["symbol"] = sub(f191[0], "a") if f191 else None
f245 = df("245")
if f245:
out["title"] = " ".join(filter(None, [sub(f245[0], "a"), sub(f245[0], "b"),
sub(f245[0], "c")])) or None
f239 = df("239")
out["descriptive_title"] = sub(f239[0], "a") if f239 else None
out["date"] = None
for tag in ("269", "992", "260"):
f = df(tag)
if f:
v = sub(f[0], "c") if tag == "260" else sub(f[0], "a")
if v:
out["date"] = v
break
out["body"] = [b for f in df("710") for b in [sub(f, "a")] if b] + \
[b for f in df("711") for b in [sub(f, "a")] if b]
out["subjects"] = sorted({s for f in df("650") for s in subs(f, "a")})
out["agenda"] = []
for f in df("991"):
item = {k: sub(f, k) for k in ("a", "b", "c", "d")}
if any(item.values()):
out["agenda"].append(item)
out["related"] = [sub(f, "a") for f in df("993") if sub(f, "a")]
f791 = df("791")
out["resolution"] = sub(f791[0], "a") if f791 else None
f996 = df("996")
if f996:
f = f996[0]
out["vote_outcome"] = sub(f, "a")
tally = {"yes": sub(f, "b"), "no": sub(f, "c"), "abstain": sub(f, "d"),
"nonvoting": sub(f, "e"), "total": sub(f, "f")}
if any(tally.values()):
out["vote_tally"] = {k: (int(v) if v and v.isdigit() else v)
for k, v in tally.items()}
votes = [{"iso": sub(f, "c"), "vote": sub(f, "d"), "country": sub(f, "e")}
for f in df("967")]
if votes:
out["votes"] = votes
files = {}
for f in df("856"):
url = sub(f, "u")
if not url or not url.lower().endswith(".pdf"):
continue
m = re.search(r"-([A-Z]{2})\.pdf$", url)
files[m.group(1) if m else (sub(f, "y") or "NA")] = url
out["files"] = files
return out
def parse_page(xml):
try:
root = etree.fromstring(xml)
except etree.XMLSyntaxError:
root = etree.fromstring(xml, etree.XMLParser(recover=True))
return root.findall("m:record", MARC_NS)
def build_params(cfg, p_expr, **extra):
params = {"p": p_expr}
if cfg.get("cc"):
params["cc"] = cfg["cc"]
params.update(extra)
return params
def get_count(pool, cfg, p_expr, tries=6):
for _ in range(tries):
r = pool.get(f"{BASE}/search", params=build_params(cfg, p_expr, rg=1, ln="en"),
timeout=60)
m = re.search(r"<strong>([0-9,]+)</strong>\s*records found", r.text, re.I)
if m:
return int(m.group(1).replace(",", ""))
if re.search(r"\b0\s+records found", r.text, re.I):
return 0
time.sleep(2)
raise RuntimeError(f"could not read count for query: {p_expr}")
def harvest_year(pool, cat, cfg, mdir, year):
p_year = f'{cfg["p"]} and year:{year}'
try:
yc = get_count(pool, cfg, p_year)
except Exception as e:
log(f"[{cat}] {year}: COUNT FAILED ({e})")
return year, -1, []
if yc <= 0:
return year, yc, []
y_ids, recs_out = set(), []
jrec, page_i = 1, 0
while len(y_ids) < yc:
page_i += 1
raw = os.path.join(mdir, f"{year}_p{page_i:02d}.xml")
if os.path.exists(raw) and os.path.getsize(raw) > 200:
xml = open(raw, "rb").read()
else:
r = pool.get(f"{BASE}/search",
params=build_params(cfg, p_year, of="xm", rg=RG,
jrec=jrec, so="a", sf="year"),
timeout=90)
xml = r.content
with open(raw, "wb") as fh:
fh.write(xml)
before = len(y_ids)
for rec in parse_page(xml):
parsed = parse_record(rec)
rid = parsed.get("record_id")
if rid in y_ids:
continue
y_ids.add(rid)
recs_out.append(parsed)
if len(y_ids) == before:
break
jrec += RG
return year, yc, recs_out
def supplemental_fill(pool, cat, cfg, mdir, seen, records, grand_total):
sort_keys = [("year", "a"), ("year", "d"), ("title", "a"), ("title", "d"),
("author", "a"), ("author", "d"), ("005", "a"), ("005", "d"),
("245", "a"), ("260", "d")]
log(f"[{cat}] supplemental fill: have {len(records)}/{grand_total}, paging full set")
plateau = 0
round_i = 0
while len(records) < grand_total and plateau < 1:
round_i += 1
before_round = len(records)
for sf, so in sort_keys:
for jrec in range(1, grand_total + 1, RG):
try:
r = pool.get(f"{BASE}/search",
params=build_params(cfg, cfg["p"], of="xm", rg=RG,
jrec=jrec, so=so, sf=sf),
timeout=90)
except Exception:
continue
raw = os.path.join(mdir, f"supp_{sf}_{so}_{jrec:05d}.xml")
with open(raw, "wb") as fh:
fh.write(r.content)
for rec in parse_page(r.content):
parsed = parse_record(rec)
rid = parsed.get("record_id")
if rid in seen:
continue
seen.add(rid)
records.append(parsed)
if len(records) >= grand_total:
break
gained = len(records) - before_round
log(f"[{cat}] supplemental round {round_i}: +{gained} (now {len(records)}/{grand_total})")
plateau = plateau + 1 if gained == 0 else 0
return records
def harvest_metadata(pool, cat, cfg, workers):
cdir = os.path.join(OUT, cat, "metadata")
mdir = os.path.join(cdir, "marcxml")
os.makedirs(mdir, exist_ok=True)
grand_total = get_count(pool, cfg, cfg["p"])
log(f"[{cat}] grand total reported: {grand_total}")
years = list(range(YEAR_START, YEAR_END + 1))
seen, records, year_sum, incomplete = set(), [], 0, []
with ThreadPoolExecutor(max_workers=workers) as ex:
futs = {ex.submit(harvest_year, pool, cat, cfg, mdir, y): y for y in years}
done = 0
failed_years = []
for fut in as_completed(futs):
year, yc, recs = fut.result()
done += 1
if yc == -1:
failed_years.append(year)
continue
if yc == 0:
continue
year_sum += yc
got = 0
for parsed in recs:
rid = parsed.get("record_id")
if rid in seen:
continue
seen.add(rid)
records.append(parsed)
got += 1
n_year = len({r["record_id"] for r in recs})
if n_year != yc:
incomplete.append((year, n_year, yc))
if done % 10 == 0 or n_year != yc:
log(f"[{cat}] {year}: {n_year}/{yc}"
f"{' INCOMPLETE' if n_year != yc else ''} "
f"(cum {len(records)}, {done}/{len(years)} yrs)")
if grand_total > 0 and len(records) < grand_total:
supplemental_fill(pool, cat, cfg, mdir, seen, records, grand_total)
jsonl_path = os.path.join(cdir, "records.jsonl")
with open(jsonl_path, "w") as fh:
for rec in sorted(records, key=lambda r: (r.get("date") or "", r.get("symbol") or "")):
fh.write(json.dumps(rec, ensure_ascii=False) + "\n")
log(f"[{cat}] wrote {len(records)} unique records -> {jsonl_path}")
log(f"[{cat}] sum-of-year-counts={year_sum}, grand_total={grand_total}, "
f"unique_collected={len(records)}")
if incomplete:
log(f"[{cat}] WARNING incomplete years: {incomplete}")
if failed_years:
log(f"[{cat}] WARNING count-failed years (rerun to fill): {sorted(failed_years)}")
return records
def write_voting_csvs(records):
vdir = os.path.join(OUT, "voting_data")
os.makedirs(vdir, exist_ok=True)
with open(os.path.join(vdir, "roll_call.csv"), "w", newline="") as fh:
w = csv.writer(fh)
w.writerow(["record_id", "resolution", "date", "country_iso", "country", "vote"])
for rec in records:
for v in rec.get("votes", []):
w.writerow([rec.get("record_id"), rec.get("resolution"),
rec.get("date"), v.get("iso"), v.get("country"), v.get("vote")])
with open(os.path.join(vdir, "summary.csv"), "w", newline="") as fh:
w = csv.writer(fh)
w.writerow(["record_id", "resolution", "date", "yes", "no", "abstain",
"nonvoting", "total", "outcome", "title"])
for rec in records:
t = rec.get("vote_tally") or {}
w.writerow([rec.get("record_id"), rec.get("resolution"), rec.get("date"),
t.get("yes"), t.get("no"), t.get("abstain"), t.get("nonvoting"),
t.get("total"), rec.get("vote_outcome"), rec.get("title")])
log("[voting_data] wrote roll_call.csv & summary.csv")
def safe_name(symbol):
return re.sub(r"[^A-Za-z0-9.]+", "_", symbol).strip("_")
def download_pdfs(pool, cat, records, langs, workers):
pdir = os.path.join(OUT, cat, "pdfs")
os.makedirs(pdir, exist_ok=True)
err_path = os.path.join(OUT, cat, "pdf_errors.log")
tasks = []
for rec in records:
sym = rec.get("symbol") or rec.get("record_id")
for lang in langs:
url = (rec.get("files") or {}).get(lang)
if not url:
continue
fpath = os.path.join(pdir, f"{safe_name(sym)}-{lang}.pdf")
if os.path.exists(fpath) and os.path.getsize(fpath) > 1000:
continue
tasks.append((sym, lang, url, fpath))
log(f"[{cat}] {len(tasks)} PDFs to fetch ({len(langs)} lang(s))")
counts = {"got": 0, "fail": 0}
lock = threading.Lock()
def one(task):
sym, lang, url, fpath = task
try:
r = pool.get(url, timeout=120)
if not r.content.startswith(b"%PDF"):
raise ValueError("not a PDF")
with open(fpath, "wb") as fh:
fh.write(r.content)
with lock:
counts["got"] += 1
if counts["got"] % 250 == 0:
log(f"[{cat}] pdf {counts['got']}/{len(tasks)}")
except Exception as e:
with lock:
counts["fail"] += 1
with open(err_path, "a") as fh:
fh.write(f"{sym}\t{lang}\t{url}\t{e}\n")
with ThreadPoolExecutor(max_workers=workers) as ex:
list(ex.map(one, tasks))
log(f"[{cat}] PDFs done: got {counts['got']}, failed {counts['fail']}")
def main():
ap = argparse.ArgumentParser()
ap.add_argument("--only", nargs="*", choices=list(CATEGORIES))
ap.add_argument("--langs", nargs="*", default=["EN"])
ap.add_argument("--no-pdfs", action="store_true")
ap.add_argument("--meta-only", action="store_true")
ap.add_argument("--pdfs-only", action="store_true",
help="skip metadata harvest; download PDFs from existing records.jsonl")
ap.add_argument("--workers", type=int, default=6)
args = ap.parse_args()
cats = args.only or list(CATEGORIES)
pool = ProxyPool(PROXY_FILE)
os.makedirs(OUT, exist_ok=True)
for cat in cats:
cfg = CATEGORIES[cat]
log(f"===== {cat} =====")
if args.pdfs_only:
path = os.path.join(OUT, cat, "metadata", "records.jsonl")
records = [json.loads(l) for l in open(path)] if os.path.exists(path) else []
log(f"[{cat}] loaded {len(records)} records from {path}")
else:
records = harvest_metadata(pool, cat, cfg, args.workers)
if cfg.get("voting"):
write_voting_csvs(records)
if cfg.get("pdfs") and not args.no_pdfs and not args.meta_only:
download_pdfs(pool, cat, records, args.langs, args.workers)
log("ALL DONE")
if __name__ == "__main__":
main()
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