Class: Karafka::Helpers::ConfigImporter

Inherits:
Module
  • Object
show all
Defined in:
lib/karafka/helpers/config_importer.rb

Overview

Module allowing for configuration injections. By default injects whole app config Allows for granular config injection

Instance Method Summary collapse

Constructor Details

#initialize(attributes = { config: %i[itself] }) ⇒ ConfigImporter

Returns a new instance of ConfigImporter.

Parameters:

  • attributes (Hash<Symbol, Array<Symbol>>) (defaults to: { config: %i[itself] }) —

    map defining what we want to inject. The key is the name under which attribute will be visible and the value is the full path to the attribute



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# File 'lib/karafka/helpers/config_importer.rb', line 11

def initialize(attributes = { config: %i[itself] })
  super()
  @attributes = attributes
end

Instance Method Details

#extended(model) ⇒ Object

Parameters:

  • model (Object) —

    object to which we want to add the config fetcher on a class level



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# File 'lib/karafka/helpers/config_importer.rb', line 30

def extended(model)
  super

  @attributes.each do |name, path|
    model.class_eval <<~RUBY, __FILE__, __LINE__ + 1
      def self.#{name}
        @#{name} ||= ::Karafka::App.config.#{path.join('.')}
      end
    RUBY
  end
end

#included(model) ⇒ Object

Parameters:

  • model (Object) —

    object to which we want to add the config fetcher



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# File 'lib/karafka/helpers/config_importer.rb', line 17

def included(model)
  super

  @attributes.each do |name, path|
    model.class_eval <<~RUBY, __FILE__, __LINE__ + 1
      def #{name}
        @#{name} ||= ::Karafka::App.config.#{path.join('.')}
      end
    RUBY
  end
end