Class: Sensu::Settings

Inherits:
Object
  • Object
show all
Includes:
Utilities
Defined in:
lib/sensu/settings.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Utilities

#deep_diff, #deep_merge, #indifferent_hash, #redact_sensitive, #retry_until_true, #testing?, #with_indifferent_access

Constructor Details

#initialize ⇒ Settings

Returns a new instance of Settings.



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# File 'lib/sensu/settings.rb', line 7

def initialize
  @logger = Logger.get
  @settings = Hash.new
  SETTINGS_CATEGORIES.each do |category|
    @settings[category] = Hash.new
  end
  @indifferent_access = false
  @loaded_env = false
  @loaded_files = Array.new
end

Instance Attribute Details

#indifferent_access ⇒ Object (readonly)

Returns the value of attribute indifferent_access.



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# File 'lib/sensu/settings.rb', line 5

def indifferent_access
  @indifferent_access
end

#loaded_env ⇒ Object (readonly)

Returns the value of attribute loaded_env.



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# File 'lib/sensu/settings.rb', line 5

def loaded_env
  @loaded_env
end

#loaded_files ⇒ Object (readonly)

Returns the value of attribute loaded_files.



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# File 'lib/sensu/settings.rb', line 5

def loaded_files
  @loaded_files
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/sensu/settings.rb', line 30

def [](key)
  to_hash[key]
end

#indifferent_access! ⇒ Object 



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# File 'lib/sensu/settings.rb', line 18

def indifferent_access!
  @settings = with_indifferent_access(@settings)
  @indifferent_access = true
end

#load_directory(directory) ⇒ Object 



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# File 'lib/sensu/settings.rb', line 118

def load_directory(directory)
  path = directory.gsub(/\\(?=\S)/, '/')
  Dir.glob(File.join(path, '**/*.json')).each do |file|
    load_file(file)
  end
end

#load_env ⇒ Object 



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# File 'lib/sensu/settings.rb', line 54

def load_env
  if ENV['RABBITMQ_URL']
    @settings[:rabbitmq] = ENV['RABBITMQ_URL']
    @logger.warn('using rabbitmq url environment variable', {
      :rabbitmq_url => ENV['RABBITMQ_URL']
    })
  end
  ENV['REDIS_URL'] ||= ENV['REDISTOGO_URL']
  if ENV['REDIS_URL']
    @settings[:redis] = ENV['REDIS_URL']
    @logger.warn('using redis url environment variable', {
      :redis_url => ENV['REDIS_URL']
    })
  end
  ENV['API_PORT'] ||= ENV['PORT']
  if ENV['API_PORT']
    @settings[:api] ||= Hash.new
    @settings[:api][:port] = ENV['API_PORT']
    @logger.warn('using api port environment variable', {
      :api_port => ENV['API_PORT']
    })
  end
  @indifferent_access = false
  @loaded_env = true
end

#load_file(file) ⇒ Object 



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# File 'lib/sensu/settings.rb', line 80

def load_file(file)
  @logger.debug('loading config file', {
    :config_file => file
  })
  if File.file?(file) && File.readable?(file)
    begin
      contents = File.open(file, 'r').read
      config = Oj.load(contents, :mode => :strict)
      merged = deep_merge(@settings, config)
      unless @loaded_files.empty?
        changes = deep_diff(@settings, merged)
        @logger.warn('config file applied changes', {
          :config_file => file,
          :changes => redact_sensitive(changes)
        })
      end
      @settings = merged
      @indifferent_access = false
      @loaded_files << file
    rescue Oj::ParseError => error
      @logger.error('config file must be valid json', {
        :config_file => file,
        :error => error.to_s
      })
      @logger.warn('ignoring config file', {
        :config_file => file
      })
    end
  else
    @logger.error('config file does not exist or is not readable', {
      :config_file => file
    })
    @logger.warn('ignoring config file', {
      :config_file => file
    })
  end
end

#set_env ⇒ Object 



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# File 'lib/sensu/settings.rb', line 125

def set_env
  ENV['SENSU_CONFIG_FILES'] = @loaded_files.join(':')
end

#to_hash ⇒ Object 



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# File 'lib/sensu/settings.rb', line 23

def to_hash
  unless @indifferent_access
    indifferent_access!
  end
  @settings
end

#validate ⇒ Object 



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# File 'lib/sensu/settings.rb', line 129

def validate
  @logger.debug('validating settings')
  SETTINGS_CATEGORIES.each do |category|
    unless @settings[category].is_a?(Hash)
      invalid(category.to_s + ' must be a hash')
    end
    send(category).each do |details|
      send(('validate_' + category.to_s.chop).to_sym, details)
    end
  end
  case File.basename($0)
  when 'sensu-client'
    validate_client
  when 'sensu-api'
    validate_api
  when 'rspec'
    validate_client
    validate_api
  end
  @logger.debug('settings are valid')
end