| """Append-only ingest harness for the SEC fundamentals PIT bundle.""" |
| from __future__ import annotations |
| import argparse |
| from datetime import datetime, timezone |
| from pathlib import Path |
|
|
| import polars as pl |
| from deltalake import DeltaTable, write_deltalake |
|
|
| import recipe |
|
|
| TABLE_URI = str(Path(__file__).parent / "data" / "data_bundle" / |
| "sec_fundamentals_pit" / "1784818614" / "data.delta") |
|
|
|
|
| def _row_hash(df: pl.DataFrame) -> pl.Series: |
| cols = [c for c in df.columns if c != "ingested_at"] |
| return df.select(cols).hash_rows().cast(pl.Utf8) |
|
|
|
|
| async def main(since: datetime) -> None: |
| fresh = await recipe.fetch(since) |
| if fresh.is_empty(): |
| print("no rows"); return |
| fresh = fresh.with_columns(pl.lit(datetime.now(timezone.utc)).alias("ingested_at")) |
| try: |
| existing = pl.from_arrow(DeltaTable(TABLE_URI).to_pyarrow_table()) |
| seen = set(_row_hash(existing).to_list()) |
| fresh = fresh.filter(~_row_hash(fresh).is_in(seen)) |
| except Exception: |
| pass |
| if fresh.is_empty(): |
| print("no new/revised rows"); return |
| write_deltalake(TABLE_URI, fresh.to_arrow(), mode="append", partition_by=["knowledge_year"]) |
| print(f"appended {len(fresh)} rows") |
|
|
|
|
| if __name__ == "__main__": |
| ap = argparse.ArgumentParser(); ap.add_argument("--since", default="2020-01-01") |
| import asyncio |
| asyncio.run(main(datetime.fromisoformat(ap.parse_args().since).replace(tzinfo=timezone.utc))) |
|
|
