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import logging
import os
from .providers import BaseConverter
from .providers.docling import DoclingConverter
from .providers.kreuzberg_converter import KreuzbergConverter
from .providers.markdown_converter import MarkdownConverter
logger = logging.getLogger(__name__)
class ConvertersFactory:
@staticmethod
def get_converters(
content_type: str, embedding_model: str
) -> list[BaseConverter]:
preferred = os.getenv("KG_PDF_CONVERTER", "docling").lower()
fallback_enabled = os.getenv("KG_PDF_FALLBACK", "false").lower() in {
"1",
"true",
"yes",
"on",
}
converters: list[BaseConverter] = []
def add_docling() -> None:
if DoclingConverter.supports_content_type(content_type):
converters.append(DoclingConverter(embedding_model))
def add_kreuzberg() -> None:
if KreuzbergConverter.supports_content_type(content_type):
converters.append(KreuzbergConverter(content_type))
def add_markdown() -> None:
if MarkdownConverter.supports_content_type(content_type):
converters.append(MarkdownConverter())
add_markdown()
if converters:
return converters
match preferred:
case "docling":
add_docling()
if fallback_enabled:
add_kreuzberg()
case "kreuzberg":
add_kreuzberg()
if fallback_enabled:
add_docling()
case "auto":
add_docling()
if fallback_enabled:
add_kreuzberg()
case _:
add_docling()
if fallback_enabled:
add_kreuzberg()
if not converters:
raise ValueError(f"Unsupported content type: {content_type}")
return converters
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