Class: ConfigReader

Inherits:
Object
  • Object
show all
Defined in:
lib/config_reader.rb,
lib/config_reader/version.rb,
lib/config_reader/magic_hash.rb

Defined Under Namespace

Classes: Configuration, MagicHash

Constant Summary collapse

VERSION = 
"2.0.2"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.configuration ⇒ Object

Returns the value of attribute configuration.



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# File 'lib/config_reader.rb', line 13

def configuration
  @configuration
end

Class Method Details

.[](key) ⇒ Object 



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# File 'lib/config_reader.rb', line 24

def [](key)
  config[key.to_sym]
end

.config ⇒ Object 



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# File 'lib/config_reader.rb', line 15

def config
  @config = nil unless defined?(@config)
  @config ||= reload
end

.configure {|configuration| ... } ⇒ Object

Yields:



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# File 'lib/config_reader.rb', line 92

def configure
  self.configuration ||= Configuration.new
  yield(configuration)
end

.deep_merge!(hash, other_hash) ⇒ Object 



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# File 'lib/config_reader.rb', line 101

def deep_merge!(hash, other_hash)
  hash.merge!(other_hash) do |key, this_val, other_val|
    if this_val.is_a?(Hash) && other_val.is_a?(Hash)
      deep_merge!(this_val, other_val)
    else
      other_val
    end
  end
end

.find_config ⇒ Object 



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# File 'lib/config_reader.rb', line 28

def find_config
  return configuration.config_file if File.exist?(configuration.config_file)

  %w( . config ).each do |dir|
    config_file = File.join(dir, configuration.config_file)
    return config_file if File.exist?(config_file)
  end

  nil
end

.inspect ⇒ Object 



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# File 'lib/config_reader.rb', line 47

def inspect
  puts config.inspect
end

.load_config ⇒ Object 



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# File 'lib/config_reader.rb', line 51

def load_config
  raise 'No config file set' unless find_config

  if defined?(ERB)
    conf = YAML.load(ERB.new(File.open(find_config).read).result)
  else
    conf = YAML.load(File.open(find_config).read)
  end

  raise 'No config found' unless conf

  conf
end

.load_sekrets ⇒ Object 



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# File 'lib/config_reader.rb', line 65

def load_sekrets
  sekrets = {}

  if configuration.sekrets_file
    begin
      require 'sekrets'
      sekrets = ::Sekrets.settings_for(configuration.sekrets_file)
      raise 'No sekrets found' unless sekrets
    rescue LoadError
      $stderr.puts "You specified a sekrets_file, but the sekrets gem isn't available."
    end
  end

  sekrets
end

.merge_configs(conf, sekrets) ⇒ Object 



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# File 'lib/config_reader.rb', line 81

def merge_configs(conf, sekrets)
  env = configuration.environment

  _conf = conf['defaults']
  deep_merge!(_conf, sekrets['defaults']) if sekrets && sekrets['defaults']
  deep_merge!(_conf, conf[env]) if conf[env]
  deep_merge!(_conf, sekrets[env]) if sekrets && sekrets[env]

  MagicHash.convert_hash(_conf, configuration.ignore_missing_keys)
end

.method_missing(key, *args, &block) ⇒ Object 



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# File 'lib/config_reader.rb', line 39

def method_missing(key, *args, &block)
  if key.to_s.end_with?('=')
    raise ArgumentError.new('ConfigReader is immutable')
  end

  config[key] || nil
end

.reload ⇒ Object 



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# File 'lib/config_reader.rb', line 20

def reload
  merge_configs(load_config, load_sekrets)
end