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66"""PDF text extraction service using docling-serve."""
import logging
from .docling_serve_client import get_docling_client
logger = logging.getLogger(__name__)
class PDFExtractionError(Exception):
"""Raised when PDF text extraction fails."""
pass
async def extract_pdf_text(pdf_content: bytes) -> str:
"""Extract text from PDF bytes via docling-serve.
Args:
pdf_content: Raw PDF file bytes
Returns:
str: Extracted markdown text from PDF
Raises:
PDFExtractionError: If extraction fails or PDF is invalid
"""
try:
client = get_docling_client()
response = await client.convert(
pdf_content,
"document.pdf",
do_ocr=False,
do_table_structure=False,
include_images=False,
)
text = response.md_content
if not text or len(text.strip()) < 10:
raise PDFExtractionError(
"PDF extraction produced insufficient text. "
"Document may be empty, image-only, or corrupted."
)
logger.info(f"Successfully extracted {len(text)} characters from PDF")
return text
except PDFExtractionError:
raise
except Exception as e:
logger.error(f"PDF text extraction failed: {e}")
raise PDFExtractionError(f"Unable to extract text from PDF: {e}") from e
def is_text_sufficient_for_pii_scan(text: str, min_length: int = 50) -> bool:
"""Check if extracted text is sufficient for PII scanning.
Args:
text: Extracted text from PDF
min_length: Minimum character count for meaningful scan
Returns:
bool: True if text is sufficient for PII analysis
"""
return len(text.strip()) >= min_length