102 lines
3.8 KiB
TypeScript
102 lines
3.8 KiB
TypeScript
import { CohereEmbeddings, CohereEmbeddingsParams } from '@langchain/cohere'
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import { ICommonObject, INode, INodeData, INodeOptionsValue, INodeParams } from '../../../src/Interface'
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import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
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import { MODEL_TYPE, getModels } from '../../../src/modelLoader'
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class CohereEmbedding_Embeddings implements INode {
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label: string
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name: string
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version: number
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type: string
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icon: string
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category: string
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description: string
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baseClasses: string[]
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credential: INodeParams
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inputs: INodeParams[]
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constructor() {
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this.label = 'Cohere Embeddings'
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this.name = 'cohereEmbeddings'
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this.version = 3.0
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this.type = 'CohereEmbeddings'
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this.icon = 'Cohere.svg'
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this.category = 'Embeddings'
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this.description = 'Cohere API to generate embeddings for a given text'
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this.baseClasses = [this.type, ...getBaseClasses(CohereEmbeddings)]
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this.credential = {
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label: 'Connect Credential',
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name: 'credential',
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type: 'credential',
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credentialNames: ['cohereApi']
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}
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this.inputs = [
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{
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label: 'Model Name',
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name: 'modelName',
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type: 'asyncOptions',
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loadMethod: 'listModels',
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default: 'embed-english-v2.0'
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},
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{
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label: 'Type',
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name: 'inputType',
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type: 'options',
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description:
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'Specifies the type of input passed to the model. Required for embedding models v3 and higher. <a target="_blank" href="https://docs.cohere.com/reference/embed">Official Docs</a>',
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options: [
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{
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label: 'search_document',
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name: 'search_document',
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description: 'Use this to encode documents for embeddings that you store in a vector database for search use-cases'
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},
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{
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label: 'search_query',
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name: 'search_query',
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description: 'Use this when you query your vector DB to find relevant documents.'
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},
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{
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label: 'classification',
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name: 'classification',
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description: 'Use this when you use the embeddings as an input to a text classifier'
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},
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{
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label: 'clustering',
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name: 'clustering',
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description: 'Use this when you want to cluster the embeddings.'
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}
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],
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default: 'search_query',
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optional: true
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}
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]
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}
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//@ts-ignore
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loadMethods = {
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async listModels(): Promise<INodeOptionsValue[]> {
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return await getModels(MODEL_TYPE.EMBEDDING, 'cohereEmbeddings')
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}
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}
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async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
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const modelName = nodeData.inputs?.modelName as string
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const inputType = nodeData.inputs?.inputType as string
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const credentialData = await getCredentialData(nodeData.credential ?? '', options)
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const cohereApiKey = getCredentialParam('cohereApiKey', credentialData, nodeData)
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const obj: Partial<CohereEmbeddingsParams> & { apiKey?: string } = {
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apiKey: cohereApiKey
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}
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if (modelName) obj.model = modelName
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if (inputType) obj.inputType = inputType
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const model = new CohereEmbeddings(obj)
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return model
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}
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}
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module.exports = { nodeClass: CohereEmbedding_Embeddings }
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