OracleSummary 集成

export ORACLE_USER=testuser
export ORACLE_PASSWORD=testuser
export ORACLE_DSN="localhost:1521/free"

import oracledb from "oracledb";
import { OracleSummary } from "@oracle/langchain-oracledb";

const connection = await oracledb.getConnection({
  user: process.env.ORACLE_USER,
  password: process.env.ORACLE_PASSWORD,
  connectionString: process.env.ORACLE_DSN,
});

const summary = new OracleSummary(
  connection,
  {
    provider: "database",
    glevel: "S",
    numParagraphs: 1,
    language: "english",
  },
  process.env.HTTP_PROXY, // 可选
);

const result = await summary.getSummary(
  "Oracle Database combines relational and vector workloads so you can build secure RAG pipelines.",
);

console.log(result); // => 简洁的摘要文本

const ociSummary = new OracleSummary(
  connection,
  {
    provider: "ocigenai",
    credential_name: "OCI_CRED",
    url: "https://inference.generativeai.us-chicago-1.oci.oraclecloud.com/20231130/actions/summarizeText",
    model: "cohere.command",
  },
  process.env.HTTP_PROXY,
);

const hfSummary = new OracleSummary(connection, {
  provider: "huggingface",
  credential_name: "HF_CRED",
  url: "https://api-inference.huggingface.co/models/",
  model: "facebook/bart-large-cnn",
  wait_for_model: "true",
});

import { tool } from "@langchain/core/tools";
import { z } from "zod";

const summarizeTool = tool(
  async ({ text }: { text: string }) => summary.getSummary(text),
  {
    name: "oracle_summary",
    description: "Summarize Oracle-sourced documents.",
    schema: z.object({
      text: z.string().describe("Full text to summarize"),
    }),
  },
);

const toolSummary = await summarizeTool.invoke({ text });