Class: Karafka::Env

Inherits:
String
  • Object
show all
Defined in:
lib/karafka/env.rb

Overview

Env management class to get and set environment for Karafka

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Karafka::Env

Note:

Will load appropriate environment automatically

Returns env object.



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# File 'lib/karafka/env.rb', line 20

def initialize
  super('')

  LOOKUP_ENV_KEYS
    .filter_map { |key| ENV.fetch(key, nil) }
    .first
    .then { |env| env || DEFAULT_ENV }
    .then { |env| replace(env) }
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *arguments) ⇒ Object

Reacts to missing methods, from which some might be the env checks. If the method ends with ‘?’ we assume, that it is an env check

Parameters:

  • method_name (String) —

    method name for missing or env name with question mark

  • arguments (Array) —

    any arguments that we pass to the method



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# File 'lib/karafka/env.rb', line 41

def method_missing(method_name, *arguments)
  method_name[-1] == '?' ? self == method_name[0..-2] : super
end

Instance Method Details

#respond_to_missing?(method_name, include_private = false) ⇒ Boolean

Returns true if we respond to a given missing method, otherwise false.

Parameters:

  • method_name (String) —

    method name

  • include_private (Boolean) (defaults to: false) —

    should we include private methods as well

Returns:

  • (Boolean) —

    true if we respond to a given missing method, otherwise false



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# File 'lib/karafka/env.rb', line 33

def respond_to_missing?(method_name, include_private = false)
  (method_name[-1] == '?') || super
end