| # | |
| # Copyright 2024 The InfiniFlow Authors. All Rights Reserved. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| # | |
| from abc import ABC | |
| import asyncio | |
| from crawl4ai import AsyncWebCrawler | |
| from agent.component.base import ComponentBase, ComponentParamBase | |
| class CrawlerParam(ComponentParamBase): | |
| """ | |
| Define the Crawler component parameters. | |
| """ | |
| def __init__(self): | |
| super().__init__() | |
| def check(self): | |
| return True | |
| 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 ans: | |
| return Crawler.be_output("") | |
| 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 | |
| ) | |
| match self._param.extract_type: | |
| case 'html': | |
| return result.cleaned_html | |
| case 'markdown': | |
| return result.markdown | |
| case 'content': | |
| return result.extracted_content | |
| case _: | |
| return result.markdown | |
| # print(result.markdown) | |