Class: Jets::Shim::Adapter::Fallback

Inherits:
Base
  • Object
show all
Defined in:
lib/jets/shim/adapter/fallback.rb

Instance Attribute Summary

Attributes inherited from Base

#context, #event, #target

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#initialize

Methods included from Util::Logging

#log

Constructor Details

This class inherits a constructor from Jets::Shim::Adapter::Base

Class Method Details

.handler(event, context = nil, target = nil) ⇒ Object 



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# File 'lib/jets/shim/adapter/fallback.rb', line 13

def handler(event, context = nil, target = nil)
  puts <<~EOL
    WARN: handler for it could not be found. The default fallback handler is being used.
    The default fallback handler simply prints out the event payload for debugging, it will be printed below.
    Usually the default handler is not what you want.
    You might be using a test event payload for testing which does not represent a real event.
    Please double check the event payload.
  EOL
  if ENV["_HANDLER"] # on AWS Lambda
    puts "event: #{JSON.dump(event)}"
  else
    puts "event:"
    puts JSON.pretty_generate(event)
  end

  if target
    puts "WARN: Event handler target not found: #{target}".color(:red)
    target_class, target_method = target.split(".")
    target_class = target_class.camelize
    target_method ||= "perform"
    puts <<~EOL
      You can configure define an app/events handler in your application. Example:

      app/events/#{target_class.underscore}.rb

          class #{target_class} < ApplicationEvent
            def #{target_method}
              puts "event #{JSON.dump(event)}"
            end
          end
    EOL

  else
    puts <<~EOL
      You can also configure a custom fallback handler with a config/jets/shim.rb file.
      Though custom handlers rarely needed and you should double check the event payload.
      Example:

      config/jets/shim.rb

          Jets.shim.configure do |config|
            config.fallback_handler = FallbackHandler
          end

      FallbackHandler should implement handler(event, context)

    EOL
  end
  # Custom Jets error message
  {
    errorMessage: "Event handler not found. Look at logs for details",
    errorType: "JetsEventHandlerNotFound"
  }
end

Instance Method Details

#fallback_handler ⇒ Object 



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# File 'lib/jets/shim/adapter/fallback.rb', line 7

def fallback_handler
  Jets::Shim.config.fallback_handler || self.class
end

#handle ⇒ Object 



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# File 'lib/jets/shim/adapter/fallback.rb', line 3

def handle
  fallback_handler.handler(event, context, target)
end