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collectors/gleif.py

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  1. """GLEIF LEI-record collector (authoritative legal-entity registry).
  3. API: https://api.gleif.org/api/v1/lei-records
  4. License: GLEIF data is free and open under GLEIF terms of use (attribution).
  5. Country-filtered CURSOR pagination: page-number pagination is rejected by the
  6. API beyond 10,000 results (page[number] * page[size] <= 10000), so full
  7. slices (CH ≈ 28k records) must walk page[cursor]=* following links.next.
  8. Per-page raw JSON caching keeps it resumable: the next cursor is recovered
  9. from the cached page's `links.next` without re-fetching it.
  10. """
  12. from __future__ import annotations
  14. import json
  15. import sys
  16. from urllib.parse import parse_qs, urlparse
  18. import requests
  20. from collectors import common
  23. def _next_cursor(doc: dict) -> str | None:
  24. """Next page[cursor] value from links.next; None when result set is exhausted."""
  25. next_url = (doc.get("links") or {}).get("next")
  26. if not next_url:
  27. return None
  28. vals = parse_qs(urlparse(next_url).query).get("page[cursor]")
  29. return vals[0] if vals else None
  32. def collect(country: str) -> list[dict]:
  33. cfg = common.CONFIG["gleif"]
  34. page_size = int(cfg.get("page_size", 200))
  35. max_pages = int(cfg.get("max_pages", 200))
  36. sleep_s = float(cfg.get("sleep_seconds", 0.35))
  38. session = requests.Session()
  39. records: list[dict] = []
  40. cursor: str | None = "*" # GLEIF: page[cursor]=* starts cursor pagination
  41. page = 1
  42. while cursor is not None and page <= max_pages:
  43. filename = f"gleif_{country.lower()}_c{page:04d}.json"
  44. path = common.raw_dir("gleif") / filename
  45. cached = path.exists()
  46. if cached:
  47. doc = json.loads(path.read_text(encoding="utf-8"))
  48. else:
  49. params = {
  50. "filter[entity.legalAddress.country]": country,
  51. "page[size]": page_size,
  52. "page[cursor]": cursor,
  53. }
  54. req_path, _meta, _hit = common.get(
  55. cfg["api_base"], "gleif", filename,
  56. params=params, session=session, sleep_seconds=sleep_s,
  57. )
  58. doc = json.loads(req_path.read_text(encoding="utf-8"))
  59. rows = doc.get("data", []) or []
  60. records.extend(rows)
  61. if not cached:
  62. pagination = (doc.get("meta") or {}).get("pagination") or {}
  63. print(
  64. json.dumps({
  65. "source": "gleif", "country": country, "page": page,
  66. "rows": len(rows), "total": pagination.get("total"),
  67. "has_next": _next_cursor(doc) is not None,
  68. }),
  69. file=sys.stderr,
  70. )
  71. if not rows:
  72. break
  73. cursor = _next_cursor(doc)
  74. page += 1
  75. else:
  76. if cursor is not None:
  77. print(
  78. json.dumps({"source": "gleif", "country": country,
  79. "warning": "max_pages reached with rows remaining"}),
  80. file=sys.stderr,
  81. )
  82. return records