AWS CDK Scribbles

import * as cdk from 'aws-cdk-lib'*
 
export class beTestStack extends cdk.Stack {
	constructor(scope: Consturct, id: string, props?: cdk.StackProps) {
		super(scope, id, props);
		
		// DYnamo db
		const table = new Table(this, 'PaymentsTable', {
			tableName: 'paymentsTable',
			partitionKey: { name: 'paymentId, type: AttributeType.STRING }
		})
		
		// API
		const paymentsApi = rnew RestApi(this, 'name', {
			defaultCorsPreflightOptions: {
				allowOrigins: Cors.ALL_ORIGINS,
				allowMethods: Cors.ALL_METHODS
			}
		})
		 const apymentResource = paymentsApi.root.addResource('payments')
		 const specificpaymentResoruce = paymentsResource.addResearouce('{id}')
		
		// functions
		const createPaymentFunction = this.createLambda('create', 'src/createPayment.ts');
		paymentsTable.grantWriteDate(createPaymentFunction);
		paymentsResource.addMethod('POST', new LambdaIngtegration(createPaymentFunction))
		
		const getPaymentFunction = this.createLambda('getPayment', 'src/getPayment.ts');
		paymentsTable.grantReadDate(getPaymentFunction);
		specificPaymentResource.addMethod('GET', new LamdbdaIntegration(getPaymentFunction))
	}
 
	createLambda = (name: string, path: string) => {
		return new NodejsFunction(this, name, {
			functionName: name,
			runtime: Runtime.NODEJS_16_X,
			entry: path
		})
	}
}

Construct

**api gateway

import {APIGatewayProxyResult} from 'aws-lambda'
 
export const buildResponse = (statusCode: number, body: Object): APIGatewayProxyResult => {
	return {
		statusCode,
		body: JSON.stringify(body),
		headers: {
			'Access-Control-Allow-Origin': '*',
			'Access-Control-Allow-Credentials': true
		}
	}
}