Support EventBridge Events

[metaskills]

Eventually we want to move to this interface all the time in app.rb. Our goal is to reflect on the incoming event and do everything right as needed.

def handler(event:, context:)
  Lamby.handler $app, event, context
end

We are mature enough to know what HTTP events look like and can instantiate the proper Rack adapter as needed. This means we can also move away from code like this in the Lambdakiq gem.

def handler(event:, context:)
  if Lambdakiq.jobs?(event)
    Lambdakiq.handler(event)
  else
    Lamby.handler $app, event, context, rack: :http
  end
end

When it comes to EventBridge, we can not assume the details in the message knows now to instantiate model objects or invoke tasks. As such, we simply add a default proc that applications can customize. For example in application.rb:

Lamby.config.event_bridge_handler = lambda do |event, context|
   # ...
end

You can also set this configuration to Lamby.config.event_bridge_handler to false to disable this feature all together.