Files
langchain-hn-rag/scrape.py
2025-07-02 12:22:05 +02:00

58 lines
1.6 KiB
Python

import logging
from abc import ABC, abstractmethod
from typing import override
import httpx
class TextScraper(ABC):
def __init__(self):
self._http_headers = {}
async def _fetch_text(self, url: str) -> str:
"""Fetch the raw HTML content from the URL."""
try:
async with httpx.AsyncClient(headers=self._http_headers) as client:
response = await client.get(url)
response.raise_for_status()
return response.text
except Exception:
logging.warning(f"Failed to fetch text from {url}", exc_info=True)
raise
@abstractmethod
async def get_content(self, url: str) -> str: ...
class Html2textScraper(TextScraper):
@override
async def get_content(self, url: str) -> str:
import html2text
return html2text.html2text(await self._fetch_text(url))
class ReadabilityScraper(TextScraper):
@override
async def get_content(self, url: str) -> str:
import readability
doc = readability.Document(await self._fetch_text(url))
return doc.summary(html_partial=True)
class JinaScraper(TextScraper):
def __init__(self, api_key: str | None = None):
super().__init__()
if api_key:
self._http_headers.update({"Authorization": f"Bearer {api_key}"})
@override
async def get_content(self, url: str) -> str:
print(f"Fetching content from: {url}")
try:
return await self._fetch_text(f"https://r.jina.ai/{url}")
except Exception:
logging.warning(f"Failed to fetch content from {url}", exc_info=True)
return ""