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122 changes: 122 additions & 0 deletions
122
packages/components/nodes/documentloaders/Puppeteer/Puppeteer.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| import { INode, INodeData, INodeParams } from '../../../src/Interface' | ||
| import { TextSplitter } from 'langchain/text_splitter' | ||
| import { PuppeteerWebBaseLoader } from 'langchain/document_loaders/web/puppeteer' | ||
| import { test } from 'linkifyjs' | ||
| import { getAvailableURLs } from '../../../src' | ||
|
|
||
| class Puppeteer_DocumentLoaders implements INode { | ||
| label: string | ||
| name: string | ||
| description: string | ||
| type: string | ||
| icon: string | ||
| category: string | ||
| baseClasses: string[] | ||
| inputs: INodeParams[] | ||
|
|
||
| constructor() { | ||
| this.label = 'Puppeteer Web Scraper' | ||
| this.name = 'puppeteerWebScraper' | ||
| this.type = 'Document' | ||
| this.icon = 'puppeteer.svg' | ||
| this.category = 'Document Loaders' | ||
| this.description = `Load data from webpages` | ||
| this.baseClasses = [this.type] | ||
| this.inputs = [ | ||
| { | ||
| label: 'URL', | ||
| name: 'url', | ||
| type: 'string' | ||
| }, | ||
| { | ||
| label: 'Text Splitter', | ||
| name: 'textSplitter', | ||
| type: 'TextSplitter', | ||
| optional: true | ||
| }, | ||
| { | ||
| label: 'Web Scrape for Relative Links', | ||
| name: 'webScrape', | ||
| type: 'boolean', | ||
| optional: true, | ||
| additionalParams: true | ||
| }, | ||
| { | ||
| label: 'Web Scrape Links Limit', | ||
| name: 'limit', | ||
| type: 'number', | ||
| default: 10, | ||
| optional: true, | ||
| additionalParams: true | ||
| }, | ||
| { | ||
| label: 'Metadata', | ||
| name: 'metadata', | ||
| type: 'json', | ||
| optional: true, | ||
| additionalParams: true | ||
| } | ||
| ] | ||
| } | ||
|
|
||
| async init(nodeData: INodeData): Promise<any> { | ||
| const textSplitter = nodeData.inputs?.textSplitter as TextSplitter | ||
| const metadata = nodeData.inputs?.metadata | ||
| const webScrape = nodeData.inputs?.webScrape as boolean | ||
| let limit = nodeData.inputs?.limit as string | ||
|
|
||
| let url = nodeData.inputs?.url as string | ||
| url = url.trim() | ||
| if (!test(url)) { | ||
| throw new Error('Invalid URL') | ||
| } | ||
|
|
||
| const puppeteerLoader = async (url: string): Promise<any> => { | ||
| let docs = [] | ||
| const loader = new PuppeteerWebBaseLoader(url) | ||
| if (textSplitter) { | ||
| docs = await loader.loadAndSplit(textSplitter) | ||
| } else { | ||
| docs = await loader.load() | ||
| } | ||
| return docs | ||
| } | ||
|
|
||
| let availableUrls: string[] | ||
| let docs = [] | ||
| if (webScrape) { | ||
| if (!limit) limit = '10' | ||
| availableUrls = await getAvailableURLs(url, parseInt(limit)) | ||
| for (let i = 0; i < availableUrls.length; i++) { | ||
| try { | ||
| docs.push(...(await puppeteerLoader(availableUrls[i]))) | ||
| } catch (error) { | ||
| console.error('Error loading url with puppeteer. URL: ', availableUrls[i], 'Error: ', error) | ||
| continue | ||
| } | ||
| } | ||
| } else { | ||
| docs = await puppeteerLoader(url) | ||
| } | ||
|
|
||
| if (metadata) { | ||
| const parsedMetadata = typeof metadata === 'object' ? metadata : JSON.parse(metadata) | ||
| let finaldocs = [] | ||
| for (const doc of docs) { | ||
| const newdoc = { | ||
| ...doc, | ||
| metadata: { | ||
| ...doc.metadata, | ||
| ...parsedMetadata | ||
| } | ||
| } | ||
| finaldocs.push(newdoc) | ||
| } | ||
| return finaldocs | ||
| } | ||
|
|
||
| return docs | ||
| } | ||
| } | ||
|
|
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| module.exports = { nodeClass: Puppeteer_DocumentLoaders } |
14 changes: 14 additions & 0 deletions
14
packages/components/nodes/documentloaders/Puppeteer/puppeteer.svg
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