CL-EA-NodeJS-Template | template provides a basic framework | REST library

If using a HTTP API Gateway, Lambda's built-in Test will fail, but you will be able to externally call the function successfully. If using a REST API Gateway, you will need to disable the Lambda proxy integration for Lambda-based adapter to function.
In Lambda Functions, create function
On the Create function page: Give the function a name Use Node.js 12.x for the runtime Choose an existing role or create a new one Click Create Function
Under Function code, select "Upload a .zip file" from the Code entry type drop-down
Click Upload and select the external-adapter.zip file
Handler: index.handler for REST API Gateways index.handlerv2 for HTTP API Gateways
Add the environment variable (repeat for all environment variables): Key: API_KEY Value: Your_API_key
Save
Click Add Trigger
Select API Gateway in Trigger configuration
Under API, click Create an API
Choose HTTP API
Select the security for the API
Click Add
Click Add Trigger
Select API Gateway in Trigger configuration
Under API, click Create an API
Choose REST API
Select the security for the API
Click Add
Click the API Gateway trigger
Click the name of the trigger (this is a link, a new window opens)
Click Integration Request
Uncheck Use Lamba Proxy integration
Click OK on the two dialogs
Return to your function
Remove the API Gateway and Save
Click Add Trigger and use the same API Gateway
Select the deployment stage and security
Click Add
In Functions, create a new function, choose to ZIP upload
Click Browse and select the external-adapter.zip file
Select a Storage Bucket to keep the zip in
Function to execute: gcpservice
Click More, Add variable (repeat for all environment variables) NAME: API_KEY VALUE: Your_API_key