GPT Actions 库（中间件）- Google 云函数

mkdir <directory_name>
cd <directory_name>

npm init

const functions = require('@google-cloud/functions-framework');
const axios = require('axios');

const TOKENINFO_URL = 'https://oauth2.googleapis.com/tokeninfo';

// Register an HTTP function with the Functions Framework that will be executed
// when you make an HTTP request to the deployed function's endpoint.
functions.http('executeGCPFunction', async (req, res) => {
  const authHeader = req.headers.authorization;

  if (!authHeader) {
    return res.status(401).send('Unauthorized: No token provided');
  }

  const token = authHeader.split(' ')[1];
  if (!token) {
    return res.status(401).send('Unauthorized: No token provided');
  }

  try {
    const tokenInfo = await validateAccessToken(token);            
    res.json("You have connected as an authenticated user to Google Functions");
  } catch (error) {
    res.status(401).send('Unauthorized: Invalid token');
  }  
});

async function validateAccessToken(token) {
  try {
    const response = await axios.get(TOKENINFO_URL, {
      params: {
        access_token: token,
      },
    });
    return response.data;
  } catch (error) {
    throw new Error('Invalid token');
  }
}

npm install @google-cloud/functions-framework
npm install axios

npx @google-cloud/functions-framework --target=executeGCPFunction

gcloud functions deploy gcp-function-for-chatgpt \
  --gen2 \
  --runtime=nodejs20 \
  --region=us-central1 \
  --source=. \
  --entry-point=executeGCPFunction \
  --trigger-http \
  --allow-unauthenticated

When the user asks you to test the integration, you will make a call to the custom action and display the results

openapi: 3.1.0
info:
  title: {insert title}
  description: {insert description}
  version: 1.0.0
servers:
  - url: {url of your Google Cloud Function}
    description: {insert description}
paths:
  /{your_function_name}:
    get:
      operationId: {create an operationID}
      summary: {insert summary}
      responses:
        '200':
          description: {insert description}
          content:
            text/plain:
              schema:
                type: string
                example: {example of response}