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96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
import logging
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import os
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from bs4 import BeautifulSoup
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from urllib.parse import urljoin, urlparse
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from application.parser.remote.base import BaseRemote
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from application.parser.schema.base import Document
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from application.core.url_validation import validate_url, SSRFError
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from application.security.safe_url import pinned_request
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class CrawlerLoader(BaseRemote):
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def __init__(self, limit=10):
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self.limit = limit # Set the limit for the number of pages to scrape
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def load_data(self, inputs):
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url = inputs
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if isinstance(url, list) and url:
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url = url[0]
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# Validate URL to prevent SSRF attacks
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try:
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url = validate_url(url)
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except SSRFError as e:
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logging.error(f"URL validation failed: {e}")
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return []
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visited_urls = set()
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base_url = urlparse(url).scheme + "://" + urlparse(url).hostname
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urls_to_visit = [url]
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loaded_content = []
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while urls_to_visit:
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current_url = urls_to_visit.pop(0)
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visited_urls.add(current_url)
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try:
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response = pinned_request("GET", current_url, timeout=30)
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response.raise_for_status()
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soup = BeautifulSoup(response.text, "html.parser")
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loaded_content.append(
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Document(
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soup.get_text(separator="\n", strip=True),
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extra_info={
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"source": current_url,
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"file_path": self._url_to_virtual_path(current_url),
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},
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)
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)
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except Exception as e:
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logging.error(f"Error processing URL {current_url}: {e}", exc_info=True)
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continue
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# Parse the HTML content to extract all links
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all_links = [
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urljoin(current_url, a['href'])
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for a in soup.find_all('a', href=True)
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if base_url in urljoin(current_url, a['href'])
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]
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# Add new links to the list of URLs to visit if they haven't been visited yet
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urls_to_visit.extend([link for link in all_links if link not in visited_urls])
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urls_to_visit = list(set(urls_to_visit))
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# Stop crawling if the limit of pages to scrape is reached
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if self.limit is not None and len(visited_urls) >= self.limit:
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break
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return loaded_content
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def _url_to_virtual_path(self, url):
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"""
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Convert a URL to a virtual file path ending with .md.
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Examples:
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https://docs.docsgpt.cloud/ -> index.md
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https://docs.docsgpt.cloud/guides/setup -> guides/setup.md
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https://docs.docsgpt.cloud/guides/setup/ -> guides/setup.md
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https://example.com/page.html -> page.md
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"""
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parsed = urlparse(url)
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path = parsed.path.strip("/")
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if not path:
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return "index.md"
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# Remove common file extensions and add .md
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base, ext = os.path.splitext(path)
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if ext.lower() in [".html", ".htm", ".php", ".asp", ".aspx", ".jsp"]:
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path = base
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if not path.endswith(".md"):
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path = f"{path}.md"
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return path
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