Extending configuration validation for http events

[DianaIonita]

Use case description

As a plugin creator
I want to be able to add configuration validation to the http event that my plugin extends
So that a plugin user is informed in case they misconfigure it

What I have tried

If my plugin has a configuration like this:

myFunction:
  events:
    - http:
        method: get
        myCustomProperty:
          customSetting: aValue

I have tried to define it like this, but it seems that this overrides the whole http event validation:

const schema = {
    type: 'object',
    properties: {
      myCustomProperty: {
        type: 'object',
        properties: {
          customSetting: { type: 'string' }
        }
      }
    }
  }

serverless.configSchemaHandler.defineFunctionEvent('aws', 'http', schema);

Proposed solution

For instance, the framework could offer a method that extends validation for a given type of event:

serverless.configSchemaHandler.extendFunctionEvent('aws', 'http', schema);

[medikoo]

@DianaIonita great thanks for that request. We're definitely open for PR that brings that in!