[Github app]: AAUser, I can hit a github webhook and my request is routed to the lambda function

[mattzcarey]

Description:

We need to have one webhook API Gateway endpoint.
This should be at a custom URL webhook-api.oriontools.ai and webhook-api.staging.oriontools.ai
We need to separate out the review lambda from the core api and create a new api - webhookapi.
This should route to the correct lambda function depending on the action property in the body. [this will be done in ticket #265 ]

Validation:
Screenshot of new webhook stack
Ping the API gateway with a sample event and it triggers the reviewLambda

Tech steps:

• In services/core create a webhook-stack.ts

• create a webhookapi and give it a custom domain as above.

• You will need to add ARecords for the subdomains in the hostedzone in route53. [DONE in api construct]

• You will need to then create a certificate in certificates manager for that subdomain and validate it with the record.

• You will need to store that certificate arn in Parameter store (see how it is done for the core stack)

• You should move the postReview Lambda to this stack. and delete the root on the coreapi for this lambda

• We then need an event bus in this stack

• We then need to add a direct integration of apigateway to eventbridge: https://serverlessland.com/patterns/apigateway-http-eventbridge-cdk [not applicable anymore]

• https://aws.amazon.com/blogs/compute/capturing-client-events-using-amazon-api-gateway-and-amazon-eventbridge/= [not applicable anymore]

• Add an eventbridge rule trigger to lambda which matches all events

ADDED:

• Create the routing Lambda, this will take in an ApiGateway event. We need to take the request, and put it into a event bridge event and post it onto the event bus.
• Update review lambda to take in a event body

[lizacullis]

Validation:

Webhook stack:

Postman request:

Lambda Triggered :