middy

import middy from '@middy/core'; import jsonBodyParser from '@middy/http-json-body-parser'; import httpErrorHandler from '@middy/http-error-handler'; import validator from '@middy/validator'; // Define your AWS Lambda handler function const paymentHandler = async (event, context) => { // Assume event.body is already parsed by jsonBodyParser const { amount, currency, token } = event.body; if (!amount || !currency || !token) { throw new Error('Missing required payment details.'); } // Simulate payment processing console.log(`Processing payment for ${amount} ${currency} with token ${token}`); const paymentId = `pay_${Date.now()}`; return { statusCode: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ message: 'Payment processed successfully', paymentId }) }; }; const inputSchema = { type: 'object', properties: { body: { type: 'object', properties: { amount: { type: 'number', minimum: 0.01 }, currency: { type: 'string', pattern: '^[A-Z]{3}$' }, token: { type: 'string' } }, required: ['amount', 'currency', 'token'] } }, required: ['body'] }; // Wrap your handler with middy and apply middlewares export const handler = middy(paymentHandler) .use(jsonBodyParser()) .use(validator({ inputSchema })) .use(httpErrorHandler()); // Must be the last middleware for error catching