feat: add parsers for Docling, LlamaCloud, and Unstructured to ETL pipeline

surfsense_backend/app/etl_pipeline/parsers/docling.py

@@ -0,0 +1,26 @@
+import warnings
+from logging import ERROR, getLogger
+
+
+async def parse_with_docling(file_path: str, filename: str) -> str:
+    from app.services.docling_service import create_docling_service
+
+    docling_service = create_docling_service()
+
+    pdfminer_logger = getLogger("pdfminer")
+    original_level = pdfminer_logger.level
+
+    with warnings.catch_warnings():
+        warnings.filterwarnings("ignore", category=UserWarning, module="pdfminer")
+        warnings.filterwarnings(
+            "ignore", message=".*Cannot set gray non-stroke color.*"
+        )
+        warnings.filterwarnings("ignore", message=".*invalid float value.*")
+        pdfminer_logger.setLevel(ERROR)
+
+        try:
+            result = await docling_service.process_document(file_path, filename)
+        finally:
+            pdfminer_logger.setLevel(original_level)
+
+    return result["content"]