Class: Msgr::Railtie

Inherits:
Rails::Railtie
  • Object
show all
Defined in:
lib/msgr/railtie.rb

Class Method Summary collapse

Class Method Details

.load(rails_config) ⇒ Object


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# File 'lib/msgr/railtie.rb', line 25

def load(rails_config)
  cfg = parse_config load_config rails_config
  return unless cfg # no config given -> does not load Msgr

  Msgr.config = cfg
  Msgr.client.connect if cfg[:checkcredentials]
  Msgr.start if cfg[:autostart]
end

.load_config(options) ⇒ Object


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# File 'lib/msgr/railtie.rb', line 81

def load_config(options)
  if options.rabbitmq_config || !Rails.application.respond_to?(:config_for)
    load_file options.rabbitmq_config || Rails.root.join('config', 'rabbitmq.yml')
  else
    conf = Rails.application.config_for :rabbitmq

    {Rails.env.to_s => conf}
  end
end

.load_file(path) ⇒ Object


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# File 'lib/msgr/railtie.rb', line 91

def load_file(path)
  YAML.safe_load ERB.new(File.read(path)).result
end

.parse_config(cfg) ⇒ Object


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# File 'lib/msgr/railtie.rb', line 34

def parse_config(cfg)
  unless cfg.is_a? Hash
    Rails.logger.warn '[Msgr] Could not load rabbitmq config: Config must be a Hash'
    return nil
  end

  unless cfg[Rails.env].is_a?(Hash)
    Rails.logger.warn "Could not load rabbitmq config for environment \"#{Rails.env}\": is not a Hash"
    return nil
  end

  cfg = HashWithIndifferentAccess.new cfg[Rails.env]
  unless cfg[:uri]
    raise ArgumentError.new('Could not load rabbitmq environment config: URI missing.')
  end

  case cfg[:autostart]
    when true, 'true', 'enabled'
      cfg[:autostart] = true
    when false, 'false', 'disabled', nil
      cfg[:autostart] = false
    else
      raise ArgumentError.new("Invalid value for rabbitmq config autostart: \"#{cfg[:autostart]}\"")
  end

  case cfg[:checkcredentials]
    when true, 'true', 'enabled', nil
      cfg[:checkcredentials] = true
    when false, 'false', 'disabled'
      cfg[:checkcredentials] = false
    else
      raise ArgumentError.new("Invalid value for rabbitmq config checkcredentials: \"#{cfg[:checkcredentials]}\"")
  end

  case cfg[:raise_exceptions]
    when true, 'true', 'enabled'
      cfg[:raise_exceptions] = true
    when false, 'false', 'disabled', nil
      cfg[:raise_exceptions] = false
    else
      raise ArgumentError.new("Invalid value for rabbitmq config raise_exceptions: \"#{cfg[:raise_exceptions]}\"")
  end

  cfg[:routing_file] ||= Rails.root.join('config/msgr.rb').to_s
  cfg
end