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Add agent component for web crawler (#2878)
### What problem does this PR solve? Add agent component for web crawler ### Type of change - [x] New Feature (non-breaking change which adds functionality)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| # | ||
| # 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 | ||
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| class CrawlerParam(ComponentParamBase): | ||
| """ | ||
| Define the Crawler component parameters. | ||
| """ | ||
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| def __init__(self): | ||
| super().__init__() | ||
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| def check(self): | ||
| return True | ||
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| class Crawler(ComponentBase, ABC): | ||
| component_name = "Crawler" | ||
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| 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)) | ||
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| return Crawler.be_output(result) | ||
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| except Exception as e: | ||
| return Crawler.be_output(f"An unexpected error occurred: {str(e)}") | ||
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| 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 | ||
| ) | ||
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| 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) | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| import { useTranslate } from '@/hooks/common-hooks'; | ||
| import { Form, Input, Select } from 'antd'; | ||
| import { useMemo } from 'react'; | ||
| import { CrawlerResultOptions } from '../../constant'; | ||
| import { IOperatorForm } from '../../interface'; | ||
| const CrawlerForm = ({ onValuesChange, form }: IOperatorForm) => { | ||
| const { t } = useTranslate('flow'); | ||
| const crawlerResultOptions = useMemo(() => { | ||
| return CrawlerResultOptions.map((x) => ({ | ||
| value: x, | ||
| label: t(`crawlerResultOptions.${x}`), | ||
| })); | ||
| }, [t]); | ||
| return ( | ||
| <Form | ||
| name="basic" | ||
| labelCol={{ span: 6 }} | ||
| wrapperCol={{ span: 18 }} | ||
| autoComplete="off" | ||
| form={form} | ||
| onValuesChange={onValuesChange} | ||
| > | ||
| <Form.Item label={t('proxy')} name={'proxy'}> | ||
| <Input placeholder="like: http://127.0.0.1:8888"></Input> | ||
| </Form.Item> | ||
| <Form.Item | ||
| label={t('extractType')} | ||
| name={'extract_type'} | ||
| initialValue="markdown" | ||
| > | ||
| <Select options={crawlerResultOptions}></Select> | ||
| </Form.Item> | ||
| </Form> | ||
| ); | ||
| }; | ||
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| export default CrawlerForm; |