dtamind-components
Version:
DTAmindai Components
232 lines • 8.79 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const lodash_1 = require("lodash");
const documents_1 = require("@langchain/core/documents");
const base_1 = require("langchain/document_loaders/base");
const utils_1 = require("../../../src/utils");
const SpiderApp_1 = __importDefault(require("./SpiderApp"));
class SpiderLoader extends base_1.BaseDocumentLoader {
constructor(loaderParams) {
super();
const { apiKey, url, mode = 'crawl', limit, additionalMetadata, params } = loaderParams;
if (!apiKey) {
throw new Error('Spider API key not set. You can set it as SPIDER_API_KEY in your .env file, or pass it to Spider.');
}
this.apiKey = apiKey;
this.url = url;
this.mode = mode;
this.limit = Number(limit);
this.additionalMetadata = additionalMetadata;
this.params = params;
}
async load() {
const app = new SpiderApp_1.default({ apiKey: this.apiKey });
let spiderDocs;
if (this.mode === 'scrape') {
const response = await app.scrapeUrl(this.url, this.params);
if (!response.success) {
throw new Error(`Spider: Failed to scrape URL. Error: ${response.error}`);
}
spiderDocs = [response.data];
}
else if (this.mode === 'crawl') {
if (this.params) {
this.params.limit = this.limit;
}
const response = await app.crawlUrl(this.url, this.params);
if (!response.success) {
throw new Error(`Spider: Failed to crawl URL. Error: ${response.error}`);
}
spiderDocs = response.data;
}
else {
throw new Error(`Unrecognized mode '${this.mode}'. Expected one of 'crawl', 'scrape'.`);
}
return spiderDocs.map((doc) => new documents_1.Document({
pageContent: doc.content || '',
metadata: {
...(this.additionalMetadata || {}),
source: doc.url
}
}));
}
}
class Spider_DocumentLoaders {
constructor() {
this.label = 'Spider Document Loaders';
this.name = 'spiderDocumentLoaders';
this.version = 2.0;
this.type = 'Document';
this.icon = 'spider.svg';
this.category = 'Document Loaders';
this.description = 'Scrape & Crawl the web with Spider';
this.baseClasses = [this.type];
this.inputs = [
{
label: 'Text Splitter',
name: 'textSplitter',
type: 'TextSplitter',
optional: true
},
{
label: 'Mode',
name: 'mode',
type: 'options',
options: [
{
label: 'Scrape',
name: 'scrape',
description: 'Scrape a single page'
},
{
label: 'Crawl',
name: 'crawl',
description: 'Crawl a website and extract pages within the same domain'
}
],
default: 'scrape'
},
{
label: 'Web Page URL',
name: 'url',
type: 'string',
placeholder: 'https://spider.cloud'
},
{
label: 'Limit',
name: 'limit',
type: 'number',
default: 25
},
{
label: 'Additional Metadata',
name: 'additional_metadata',
type: 'json',
description: 'Additional metadata to be added to the extracted documents',
optional: true,
additionalParams: true
},
{
label: 'Additional Parameters',
name: 'params',
description: 'Find all the available parameters in the <a _target="blank" href="https://spider.cloud/docs/api">Spider API documentation</a>',
additionalParams: true,
placeholder: '{ "anti_bot": true }',
type: 'json',
optional: true
},
{
label: 'Omit Metadata Keys',
name: 'omitMetadataKeys',
type: 'string',
rows: 4,
description: 'Each document loader comes with a default set of metadata keys that are extracted from the document. You can use this field to omit some of the default metadata keys. The value should be a list of keys, seperated by comma. Use * to omit all metadata keys execept the ones you specify in the Additional Metadata field',
placeholder: 'key1, key2, key3.nestedKey1',
optional: true,
additionalParams: true
}
];
this.credential = {
label: 'Credential',
name: 'credential',
type: 'credential',
credentialNames: ['spiderApi']
};
this.outputs = [
{
label: 'Document',
name: 'document',
description: 'Array of document objects containing metadata and pageContent',
baseClasses: [...this.baseClasses, 'json']
},
{
label: 'Text',
name: 'text',
description: 'Concatenated string from pageContent of documents',
baseClasses: ['string', 'json']
}
];
}
async init(nodeData, _, options) {
const textSplitter = nodeData.inputs?.textSplitter;
const url = nodeData.inputs?.url;
const mode = nodeData.inputs?.mode;
const limit = nodeData.inputs?.limit;
let additionalMetadata = nodeData.inputs?.additional_metadata;
let params = nodeData.inputs?.params || {};
const credentialData = await (0, utils_1.getCredentialData)(nodeData.credential ?? '', options);
const spiderApiKey = (0, utils_1.getCredentialParam)('spiderApiKey', credentialData, nodeData);
const _omitMetadataKeys = nodeData.inputs?.omitMetadataKeys;
const output = nodeData.outputs?.output;
let omitMetadataKeys = [];
if (_omitMetadataKeys) {
omitMetadataKeys = _omitMetadataKeys.split(',').map((key) => key.trim());
}
if (typeof params === 'string') {
try {
params = JSON.parse(params);
}
catch (e) {
console.error('Invalid JSON string provided for params');
}
}
if (additionalMetadata) {
if (typeof additionalMetadata === 'string') {
try {
additionalMetadata = JSON.parse(additionalMetadata);
}
catch (e) {
console.error('Invalid JSON string provided for additional metadata');
}
}
else if (typeof additionalMetadata !== 'object') {
console.error('Additional metadata must be a valid JSON object');
}
}
else {
additionalMetadata = {};
}
// Ensure return_format is set to markdown
params.return_format = 'markdown';
const input = {
url,
mode: mode,
apiKey: spiderApiKey,
limit: limit,
additionalMetadata: additionalMetadata,
params: params
};
const loader = new SpiderLoader(input);
let docs = [];
if (textSplitter) {
docs = await loader.loadAndSplit(textSplitter);
}
else {
docs = await loader.load();
}
docs = docs.map((doc) => ({
...doc,
metadata: _omitMetadataKeys === '*'
? additionalMetadata
: (0, lodash_1.omit)({
...doc.metadata,
...additionalMetadata
}, omitMetadataKeys)
}));
if (output === 'document') {
return docs;
}
else {
let finaltext = '';
for (const doc of docs) {
finaltext += `${doc.pageContent}\n`;
}
return (0, utils_1.handleEscapeCharacters)(finaltext, false);
}
}
}
module.exports = { nodeClass: Spider_DocumentLoaders };
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