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| from abc import ABC |
| import asyncio |
| from crawl4ai import AsyncWebCrawler |
| from agent.component.base import ComponentBase, ComponentParamBase |
| from api.utils.web_utils import is_valid_url |
|
|
|
|
| class CrawlerParam(ComponentParamBase): |
| """ |
| Define the Crawler component parameters. |
| """ |
|
|
| def __init__(self): |
| super().__init__() |
| self.proxy = None |
| self.extract_type = "markdown" |
| |
| def check(self): |
| self.check_valid_value(self.extract_type, "Type of content from the crawler", ['html', 'markdown', 'content']) |
|
|
|
|
| class Crawler(ComponentBase, ABC): |
| component_name = "Crawler" |
|
|
| def _run(self, history, **kwargs): |
| ans = self.get_input() |
| ans = " - ".join(ans["content"]) if "content" in ans else "" |
| if not is_valid_url(ans): |
| return Crawler.be_output("URL not valid") |
| try: |
| result = asyncio.run(self.get_web(ans)) |
|
|
| return Crawler.be_output(result) |
| |
| except Exception as e: |
| return Crawler.be_output(f"An unexpected error occurred: {str(e)}") |
|
|
| async def get_web(self, url): |
| proxy = self._param.proxy if self._param.proxy else None |
| async with AsyncWebCrawler(verbose=True, proxy=proxy) as crawler: |
| result = await crawler.arun( |
| url=url, |
| bypass_cache=True |
| ) |
| |
| if self._param.extract_type == 'html': |
| return result.cleaned_html |
| elif self._param.extract_type == 'markdown': |
| return result.markdown |
| elif self._param.extract_type == 'content': |
| result.extracted_content |
| return result.markdown |
|
|
