class Kafo::KafoConfigure

Attributes

app_options[RW]
check_dirs[RW]
config[RW]
config_file[RW]
exit_handler[RW]
gem_root[RW]
hooking[W]
kafo_modules_dir[RW]
logger[RW]
module_dirs[RW]
root_dir[RW]
scenario_manager[RW]
temp_config_file[RW]
verbose[RW]

Public Class Methods

app_option(*args, &block) click to toggle source
# File lib/kafo/kafo_configure.rb, line 188
def self.app_option(*args, &block)
  self.app_options ||= []
  self.app_options.push self.option(*args, &block)
  self.app_options.last
end
exit(code, &block) click to toggle source
# File lib/kafo/kafo_configure.rb, line 160
def self.exit(code, &block)
  exit_handler.exit(code, &block)
end
exit_code() click to toggle source
# File lib/kafo/kafo_configure.rb, line 164
def self.exit_code
  self.exit_handler.exit_code
end
help(*args) click to toggle source
Calls superclass method
# File lib/kafo/kafo_configure.rb, line 181
def self.help(*args)
  kafo          = args.pop
  builder_class = kafo.full_help? ? HelpBuilders::Advanced : HelpBuilders::Basic
  args.push builder_class.new(kafo.params)
  super(*args)
end
hooking() click to toggle source
# File lib/kafo/kafo_configure.rb, line 37
def hooking
  @hooking ||= Hooking.new
end
in_help_mode?() click to toggle source
# File lib/kafo/kafo_configure.rb, line 168
def self.in_help_mode?
  ARGV.include?('--help') || ARGV.include?('--full-help') || ARGV.include?('-h')
end
new(*args) click to toggle source
Calls superclass method
# File lib/kafo/kafo_configure.rb, line 42
def initialize(*args)
  self.class.preset_color_scheme
  self.class.logger           = Logger.new
  self.class.exit_handler     = ExitHandler.new
  @progress_bar               = nil
  @config_reload_requested    = false

  scenario_manager = setup_scenario_manager
  self.class.scenario_manager = scenario_manager

  # Handle --list-scenarios before we need them
  scenario_manager.list_available_scenarios if ARGV.include?('--list-scenarios')
  scenario_manager.check_enable_scenario
  scenario_manager.check_disable_scenario
  setup_config(config_file)

  self.class.hooking.execute(:pre_migrations)

  # run migrations
  self.class.config.run_migrations

  if ARGV.include?('--migrations-only')
    self.class.verbose = (ARGV.include?('--verbose') || ARGV.include?('-v'))
    Logger.setup
    self.class.logger.info('Log buffers flushed')
    self.class.exit(0)
  end

  # reload config
  if @config_reload_requested
    scenario_manager = setup_scenario_manager
    self.class.scenario_manager = scenario_manager
    setup_config(self.class.config_file)
    self.class.logger.info('Installer configuration was reloaded')
  end

  if scenario_manager.configured?
    scenario_manager.check_scenario_change(self.class.config_file)
    if scenario_manager.scenario_changed?(self.class.config_file) && !self.class.in_help_mode?
      prev_config = scenario_manager.load_configuration(scenario_manager.previous_scenario)
      prev_config.run_migrations
      self.class.config.migrate_configuration(prev_config, :skip => [:log_name])
      setup_config(self.class.config_file)
      self.class.logger.info("Due to scenario change the configuration (#{self.class.config_file}) was updated with #{scenario_manager.previous_scenario} and reloaded.")
    end
  end

  super

  self.class.hooking.execute(:boot)
  set_app_options # define args for installer
  # we need to parse app config params using clamp even before run method does it
  # so we limit parsing only to app config options (because of --help and later defined params)
  parse clamp_app_arguments
  parse_app_arguments # set values from ARGS to config.app
  Logger.setup
  self.class.set_color_scheme

  self.class.hooking.execute(:init)
  set_parameters # here the params gets parsed and we need app config populated
  set_options
end
run() click to toggle source
Calls superclass method
# File lib/kafo/kafo_configure.rb, line 154
def self.run
  return super
rescue SystemExit => e
  self.exit_handler.exit(self.exit_code) # fail in initialize
end

Private Class Methods

preset_color_scheme() click to toggle source
# File lib/kafo/kafo_configure.rb, line 459
def self.preset_color_scheme
  match = ARGV.join(' ').match /--color-of-background[ =](\w+)/
  background = match && match[1]
  ColorScheme.new(:background => background, :colors => use_colors?).setup
end
set_color_scheme() click to toggle source
# File lib/kafo/kafo_configure.rb, line 465
def self.set_color_scheme
  ColorScheme.new(
    :background => config.app[:color_of_background],
    :colors => use_colors?).setup
end
use_colors?() click to toggle source
# File lib/kafo/kafo_configure.rb, line 449
def self.use_colors?
  if config
    colors = config.app[:colors]
  else
    colors = ARGV.include?('--no-colors') ? false : nil
    colors = ARGV.include?('--colors') ? true : nil if colors.nil?
  end
  colors
end

Public Instance Methods

add_module(name) click to toggle source
# File lib/kafo/kafo_configure.rb, line 206
def add_module(name)
  config.add_module(name)
  reset_params_cache
  self.module(name)
end
config() click to toggle source
# File lib/kafo/kafo_configure.rb, line 105
def config
  self.class.config
end
execute() click to toggle source
# File lib/kafo/kafo_configure.rb, line 113
def execute
  parse_cli_arguments

  if (self.class.verbose = !!verbose?)
    Logger.setup_verbose
  else
    @progress_bar = self.class.config.app[:colors] ? ProgressBars::Colored.new : ProgressBars::BlackWhite.new
  end

  unless skip_checks_i_know_better?
    unless SystemChecker.check
      puts "Your system does not meet configuration criteria"
      self.class.exit(:invalid_system)
    end
  end

  self.class.hooking.execute(:pre_validations)
  if interactive?
    wizard = Wizard.new(self)
    wizard.run
  else
    unless validate_all
      puts "Error during configuration, exiting"
      self.class.exit(:invalid_values)
    end
  end

  self.class.hooking.execute(:pre_commit)
  if dont_save_answers? || noop?
    self.class.temp_config_file = self.class.config.temp_config_file
    store_params(self.class.config.temp_config_file)
  else
    store_params
    self.class.scenario_manager.link_last_scenario(self.class.config_file) if self.class.scenario_manager.configured?
  end
  run_installation
  return self
rescue SystemExit
  return self
end
exit_code() click to toggle source
# File lib/kafo/kafo_configure.rb, line 172
def exit_code
  self.class.exit_code
end
help() click to toggle source
# File lib/kafo/kafo_configure.rb, line 177
def help
  self.class.help(invocation_path, self)
end
logger() click to toggle source
# File lib/kafo/kafo_configure.rb, line 109
def logger
  self.class.logger
end
module(name) click to toggle source
# File lib/kafo/kafo_configure.rb, line 216
def module(name)
  modules.detect { |m| m.name == name }
end
modules() click to toggle source
# File lib/kafo/kafo_configure.rb, line 212
def modules
  config.modules.sort
end
param(mod, name) click to toggle source
# File lib/kafo/kafo_configure.rb, line 220
def param(mod, name)
  config.param(mod, name)
end
params() click to toggle source
# File lib/kafo/kafo_configure.rb, line 194
def params
  @params ||= modules.map(&:params).flatten
rescue KafoParsers::ModuleName => e
  puts e
  self.class.exit(:unknown_module)
end
request_config_reload() click to toggle source
# File lib/kafo/kafo_configure.rb, line 224
def request_config_reload
  @config_reload_requested = true
end
reset_params_cache() click to toggle source
# File lib/kafo/kafo_configure.rb, line 201
def reset_params_cache
  @params = nil
  params
end

Private Instance Methods

build_yes_no_variants(s) click to toggle source
# File lib/kafo/kafo_configure.rb, line 323
def build_yes_no_variants(s)
  [ s.sub('[no-]', ''), s.sub('[no-]', 'no-') ]
end
clamp_app_arguments() click to toggle source

ARGV can contain values for attributes e.g. ['-l', 'info'] so we accept either allowed args or those that does not start with '-' and are right after accepted argument

# File lib/kafo/kafo_configure.rb, line 309
def clamp_app_arguments
  @allowed_clamp_app_arguments = self.class.app_options.map do |option|
    option.switches.map { |s| is_yes_no_flag?(s) ? build_yes_no_variants(s) : s }
  end
  @allowed_clamp_app_arguments.flatten!

  last_was_accepted = false
  ARGV.select { |arg| last_was_accepted = is_allowed_attribute_name?(arg) || (last_was_accepted && is_value?(arg)) }
end
config_file() click to toggle source
# File lib/kafo/kafo_configure.rb, line 441
def config_file
  return CONFIG_FILE if defined?(CONFIG_FILE) && File.exists?(CONFIG_FILE)
  return self.class.scenario_manager.select_scenario if self.class.scenario_manager.configured?
  return '/etc/kafo/kafo.yaml' if File.exists?('/etc/kafo/kafo.yaml')
  return "#{::RbConfig::CONFIG['sysconfdir']}/kafo/kafo.yaml" if File.exists?("#{::RbConfig::CONFIG['sysconfdir']}/kafo/kafo.yaml")
  File.join(Dir.pwd, 'config', 'kafo.yaml')
end
is_allowed_attribute_name?(str) click to toggle source
# File lib/kafo/kafo_configure.rb, line 327
def is_allowed_attribute_name?(str)
  str =~ /([a-zA-Z0-9_-]*)([= ].*)?/ && @allowed_clamp_app_arguments.include?($1)
end
is_value?(str) click to toggle source
# File lib/kafo/kafo_configure.rb, line 331
def is_value?(str)
  !str.start_with?('-')
end
is_yes_no_flag?(s) click to toggle source
# File lib/kafo/kafo_configure.rb, line 319
def is_yes_no_flag?(s)
  s.include?('[no-]')
end
parse_app_arguments() click to toggle source
# File lib/kafo/kafo_configure.rb, line 335
def parse_app_arguments
  self.class.app_options.each do |option|
    name                    = option.attribute_name
    value                   = send(option.flag? ? "#{name}?" : name)
    config.app[name.to_sym] = value.nil? ? option.default_value : value
  end
end
parse_cli_arguments() click to toggle source
# File lib/kafo/kafo_configure.rb, line 343
def parse_cli_arguments
  # enable/disable modules according to CLI
  config.modules.each { |mod| send("enable_#{mod.name}?") ? mod.enable : mod.disable }

  # set values coming from CLI arguments
  params.each do |param|
    variable_name = u(with_prefix(param))
    variable_name += '_list' if param.multivalued?
    cli_value     = instance_variable_get("@#{variable_name}")
    param.value   = cli_value unless cli_value.nil?
  end
end
progress_log(method, message) click to toggle source
# File lib/kafo/kafo_configure.rb, line 415
def progress_log(method, message)
  @progress_bar.print_error(message + "\n") if method == :error && @progress_bar
  logger.send(method, message)
end
puppet_parse(line) click to toggle source
# File lib/kafo/kafo_configure.rb, line 420
def puppet_parse(line)
  method, message = case
                      when line =~ /^Error:(.*)/i || line =~ /^Err:(.*)/i
                        [:error, $1]
                      when line =~ /^Warning:(.*)/i || line =~ /^Notice:(.*)/i
                        [:warn, $1]
                      when line =~ /^Info:(.*)/i
                        [:info, $1]
                      when line =~ /^Debug:(.*)/i
                        [:debug, $1]
                      else
                        [:info, line]
                    end

  return [method, message.chomp]
end
run_installation() click to toggle source
# File lib/kafo/kafo_configure.rb, line 371
def run_installation
  self.class.hooking.execute(:pre)
  exit_code   = 0
  exit_status = nil
  options     = [
      '--verbose',
      '--debug',
      '--trace',
      '--color=false',
      '--show_diff',
      '--detailed-exitcodes',
  ]
  options.push '--noop' if noop?
  options.push '--profile' if profile?
  begin
    command = PuppetCommand.new('include kafo_configure', options).command
    PTY.spawn(command) do |stdin, stdout, pid|
      begin
        stdin.each do |line|
          progress_log(*puppet_parse(line))
          @progress_bar.update(line) if @progress_bar
        end
      rescue Errno::EIO # we reach end of input
        exit_status = PTY.check(pid, true) if PTY.respond_to?(:check) # ruby >= 1.9.2
        if exit_status.nil? # process is still running or we have old ruby so we don't know
          begin
            Process.wait(pid)
          rescue Errno::ECHILD # process could exit meanwhile so we rescue
          end
          exit_code = $?.exitstatus
        end
      end
    end
  rescue PTY::ChildExited => e # could be raised by Process.wait on older ruby or by PTY.check
    exit_code = e.status.exitstatus
  end
  @progress_bar.close if @progress_bar
  logger.info "Puppet has finished, bye!"
  FileUtils.rm(self.class.config.temp_config_file, :force => true)
  self.class.exit(exit_code) do
    self.class.hooking.execute(:post)
  end
end
set_app_options() click to toggle source
# File lib/kafo/kafo_configure.rb, line 257
def set_app_options
  self.class.app_option ['--[no-]colors'], :flag, 'Use color output on STDOUT',
                        :default => !!config.app[:colors]
  self.class.app_option ['--color-of-background'], 'COLOR', 'Your terminal background is :bright or :dark',
                        :default => config.app[:color_of_background]
  self.class.app_option ['-d', '--dont-save-answers'], :flag, "Skip saving answers to '#{self.class.config.answer_file}'?",
                        :default => !!config.app[:dont_save_answers]
  self.class.app_option '--ignore-undocumented', :flag, 'Ignore inconsistent parameter documentation',
                        :default => false
  self.class.app_option ['-i', '--interactive'], :flag, 'Run in interactive mode'
  self.class.app_option '--log-level', 'LEVEL', 'Log level for log file output',
                        :default => config.app[:log_level]
  self.class.app_option ['-n', '--noop'], :flag, 'Run puppet in noop mode?',
                        :default => false
  self.class.app_option ['-p', '--profile'], :flag, 'Run puppet in profile mode?',
                        :default => false
  self.class.app_option ['-s', '--skip-checks-i-know-better'], :flag, 'Skip all system checks', :default => false
  self.class.app_option ['-v', '--verbose'], :flag, 'Display log on STDOUT instead of progressbar'
  self.class.app_option ['-l', '--verbose-log-level'], 'LEVEL', 'Log level for verbose mode output',
                        :default => 'info'
  self.class.app_option ['-S', '--scenario'], 'SCENARIO', 'Use installation scenario'
  self.class.app_option ['--disable-scenario'], 'SCENARIO', 'Disable installation scenario'
  self.class.app_option ['--enable-scenario'], 'SCENARIO', 'Enable installation scenario'
  self.class.app_option ['--list-scenarios'], :flag, 'List available installation scenaraios'
  self.class.app_option ['--force'], :flag, 'Force change of installation scenaraio'
  self.class.app_option ['--compare-scenarios'], :flag, 'Show changes between last used scenario and the scenario specified with -S or --scenario argument'
  self.class.app_option ['--migrations-only'], :flag, 'Apply migrations to a selected scenario and exit'
end
set_options() click to toggle source
# File lib/kafo/kafo_configure.rb, line 286
def set_options
  self.class.option '--full-help', :flag, "print complete help" do
    @full_help = true
    request_help
  end

  modules.each do |mod|
    self.class.option d("--[no-]enable-#{mod.name}"),
                      :flag,
                      "Enable '#{mod.name}' puppet module",
                      :default => mod.enabled?
  end

  params.sort.each do |param|
    doc = param.doc.nil? ? 'UNDOCUMENTED' : param.doc.join("\n")
    self.class.option parametrize(param), '', doc,
                      :default => param.value, :multivalued => param.multivalued?
  end
end
set_parameters() click to toggle source
# File lib/kafo/kafo_configure.rb, line 247
def set_parameters
  config.preset_defaults_from_puppet
  self.class.hooking.execute(:pre_values)
  config.preset_defaults_from_yaml
  if self.class.scenario_manager.scenario_changed?(config.config_file)
    prev_scenario = self.class.scenario_manager.load_and_setup_configuration(self.class.scenario_manager.previous_scenario)
    config.preset_defaults_from_other_config(prev_scenario)
  end
end
setup_config(conf_file) click to toggle source
# File lib/kafo/kafo_configure.rb, line 231
def setup_config(conf_file)
  self.class.config_file      = conf_file
  self.class.config           = Configuration.new(self.class.config_file)
  self.class.root_dir         = self.class.config.root_dir
  self.class.check_dirs       = self.class.config.check_dirs
  self.class.module_dirs      = self.class.config.module_dirs
  self.class.gem_root         = self.class.config.gem_root
  self.class.kafo_modules_dir = self.class.config.kafo_modules_dir
  self.class.hooking.load
  self.class.hooking.kafo     = self
end
setup_scenario_manager() click to toggle source
# File lib/kafo/kafo_configure.rb, line 243
def setup_scenario_manager
  ScenarioManager.new((defined?(CONFIG_DIR) && CONFIG_DIR) || (defined?(CONFIG_FILE) && CONFIG_FILE))
end
store_params(file = nil) click to toggle source
# File lib/kafo/kafo_configure.rb, line 356
def store_params(file = nil)
  data = Hash[config.modules.map { |mod| [mod.identifier, mod.enabled? ? mod.params_hash : false] }]
  config.store(data, file)
end
unset() click to toggle source
# File lib/kafo/kafo_configure.rb, line 437
def unset
  params.select { |p| p.module.enabled? && p.value_set.nil? }
end
validate_all(logging = true) click to toggle source
# File lib/kafo/kafo_configure.rb, line 361
def validate_all(logging = true)
  logger.info 'Running validation checks'
  results = params.map do |param|
    result = param.valid?
    progress_log(:error, "Parameter #{with_prefix(param)} invalid") if logging && !result
    result
  end
  results.all?
end