class OneApm::Configuration::EnvironmentSource

Constants

OA_SPECIAL_CASE_KEYS
OA_SUPPORTED_PREFIXES

Attributes

alias_map[RW]
type_map[RW]

Public Class Methods

new() click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 15
def initialize
  set_log_file
  set_config_file

  @alias_map = {}
  @type_map = {}

  DEFAULTS.each do |config_setting, value|
    self.type_map[config_setting] = value[:type]
    set_aliases(config_setting, value)
  end

  set_values_from_one_apm_environment_variables
end

Public Instance Methods

collect_one_apm_environment_variable_keys() click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 106
def collect_one_apm_environment_variable_keys
  ENV.keys.select { |key| key.match(OA_SUPPORTED_PREFIXES) }
end
convert_environment_key_to_config_key(key) click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 101
def convert_environment_key_to_config_key(key)
  stripped_key = key.gsub(OA_SUPPORTED_PREFIXES, '').downcase.to_sym
  self.alias_map[stripped_key] || stripped_key
end
set_aliases(config_setting, value) click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 30
def set_aliases(config_setting, value)
  set_dotted_alias(config_setting)

  return unless value[:aliases]
  value[:aliases].each do |config_alias|
    self.alias_map[config_alias] = config_setting
  end
end
set_config_file() click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 59
def set_config_file
  self[:config_path] = ENV['ONEAPM_CONFIG'] if ENV['ONEAPM_CONFIG']
end
set_dotted_alias(original_config_setting) click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 39
def set_dotted_alias(original_config_setting)
  config_setting = original_config_setting.to_s

  if config_setting.include? '.'
    config_alias = config_setting.gsub(/\./,'_').to_sym
    self.alias_map[config_alias] = original_config_setting
  end
end
set_key_by_type(config_key, environment_key) click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 77
def set_key_by_type(config_key, environment_key)
  value = ENV[environment_key]
  type = self.type_map[config_key]

  if type == String
    self[config_key] = value
  elsif type == Fixnum
    self[config_key] = value.to_i
  elsif type == Float
    self[config_key] = value.to_f
  elsif type == Symbol
    self[config_key] = value.to_sym
  elsif type == OneApm::Configuration::Boolean
    if value =~ /false|off|no/i
      self[config_key] = false
    elsif value != nil
      self[config_key] = true
    end
  else
    OneApm::Manager.logger.info("#{environment_key} does not have a corresponding configuration setting (#{config_key} does not exist).")
    self[config_key] = value
  end
end
set_log_file() click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 48
def set_log_file
  if ENV['ONEAPM_LOG']
    if ENV['ONEAPM_LOG'].upcase == 'STDOUT'
      self[:log_file_path] = self[:log_file_name] = 'STDOUT'
    else
      self[:log_file_path] = File.dirname(ENV['ONEAPM_LOG'])
      self[:log_file_name] = File.basename(ENV['ONEAPM_LOG'])
    end
  end
end
set_value_from_environment_variable(key) click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 72
def set_value_from_environment_variable(key)
  config_key = convert_environment_key_to_config_key(key)
  set_key_by_type(config_key, key)
end
set_values_from_one_apm_environment_variables() click to toggle source
# File lib/one_apm/configuration/environment_source.rb, line 63
def set_values_from_one_apm_environment_variables
  env_var_keys = collect_one_apm_environment_variable_keys

  env_var_keys.each do |key|
    next if OA_SPECIAL_CASE_KEYS.include?(key.upcase)
    set_value_from_environment_variable(key)
  end
end