dsl_handler_slide_send_email_handler.md

Invoke the library helper in a recipe:

Chef.event_handler do
  on :run_failed do
    HandlerSendEmail::Helper.new.send_email_on_run_failure(
      Chef.run_context.node.name
    )
  end
end

• Use Chef.event_handler to define the event handler
• Use the on method to specify the event type

Within the on block, tell Chef Infra Client how to handle the event when it is triggered.