Class: BlueprintConfig::Backend::ENV

Inherits:
Base
  • Object
show all
Defined in:
lib/blueprint_config/backend/env.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#fresh?, #nest_hash

Constructor Details

#initialize(options = {}) ⇒ ENV

Returns a new instance of ENV.



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# File 'lib/blueprint_config/backend/env.rb', line 10

def initialize(options = {})
  @options = options
end

Instance Attribute Details

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/blueprint_config/backend/env.rb', line 8

def options
  @options
end

Instance Method Details

#env_downcased ⇒ Object 



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# File 'lib/blueprint_config/backend/env.rb', line 21

def env_downcased
  @env_downcased ||= ::ENV.to_h.transform_keys(&:downcase)
end

#env_downcased_keys ⇒ Object 



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# File 'lib/blueprint_config/backend/env.rb', line 25

def env_downcased_keys
  @env_downcased_keys ||= env_downcased.keys
end

#filtered_env ⇒ Object 



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# File 'lib/blueprint_config/backend/env.rb', line 29

def filtered_env
  return env_downcased if @options[:allow_all]

  allowed_keys = @options[:whitelist_keys]&.map(&:to_s) || []
  @options[:whitelist_prefixes]&.each do |prefix|
    allowed_keys += env_downcased_keys.select { |key| key.to_s.start_with?(prefix.to_s) }
  end

  env_downcased.slice(* allowed_keys)
end

#load_keys ⇒ Object 



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# File 'lib/blueprint_config/backend/env.rb', line 14

def load_keys
  {
    # env: ::ENV.to_h.transform_keys(&:to_sym),
    ** transformed_env
  }
end

#source ⇒ Object 



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# File 'lib/blueprint_config/backend/env.rb', line 46

def source
  details = []
  details << "whitelist_keys: #{@options[:whitelist_keys].join(', ')}" if @options[:whitelist_keys]
  details << "whitelist_prefixes: #{@options[:whitelist_prefixes].join(', ')}" if @options[:whitelist_prefixes]
  
  if details.any?
    "#{self.class.name}(#{details.join(', ')})"
  else
    self.class.name
  end
end

#transformed_env ⇒ Object 



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# File 'lib/blueprint_config/backend/env.rb', line 40

def transformed_env
  return filtered_env.transform_keys(&:to_sym) unless @options[:nest]

  nest_hash(filtered_env, @options[:nest_separator] || '_')
end