53a9e838f9
- Add close_system_db() function in src/db.py to cleanly close shared DB connection - Add lifespan context manager in app/main.py to trigger shutdown on app exit - Integrate lifespan into FastAPI app initialization - All API tests pass (77/77)
57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
"""Data download endpoint — streaming parquet files."""
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from fastapi import APIRouter, Depends, HTTPException, Request
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from fastapi.responses import FileResponse
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import duckdb
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from app.auth.dependencies import get_current_user, _get_db
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from app.utils import get_data_dir as _get_data_dir
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from src.rbac import can_access_table
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router = APIRouter(prefix="/api/data", tags=["data"])
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@router.get("/{table_id}/download")
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async def download_table(
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table_id: str,
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request: Request,
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user: dict = Depends(get_current_user),
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conn: duckdb.DuckDBPyConnection = Depends(_get_db),
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):
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"""Stream a parquet file for download. Supports ETag for caching."""
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# Check access FIRST
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if not can_access_table(user, table_id, conn):
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raise HTTPException(status_code=403, detail="Access denied to this table")
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data_dir = _get_data_dir()
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# Search in extracts directory (v2 extract.duckdb architecture)
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extracts_dir = data_dir / "extracts"
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candidates = list(extracts_dir.rglob(f"data/{table_id}.parquet")) if extracts_dir.exists() else []
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# Fallback to legacy path for backward compatibility
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if not candidates:
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parquet_dir = data_dir / "src_data" / "parquet"
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candidates = list(parquet_dir.rglob(f"{table_id}.parquet"))
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if not candidates:
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candidates = list(parquet_dir.rglob(f"*/{table_id}.parquet"))
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if not candidates:
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raise HTTPException(status_code=404, detail=f"Table '{table_id}' not found")
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file_path = candidates[0]
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# ETag support
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stat = file_path.stat()
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etag = f'"{stat.st_mtime_ns}"'
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if_none_match = request.headers.get("if-none-match")
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if if_none_match == etag:
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from starlette.responses import Response
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return Response(status_code=304)
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return FileResponse(
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path=file_path,
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filename=f"{table_id}.parquet",
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media_type="application/octet-stream",
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headers={"ETag": etag},
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)
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