Class: OneacctOpts

Inherits:
Object
  • Object
show all
Defined in:
lib/oneacct_opts.rb

Overview

Class for parsing command line arguments

Constant Summary collapse

BLOCKING_DEFAULT = 
false
TIMEOUT_DEFAULT = 
60 * 60
COMPATIBILITY_DEFAULT = 
false

Class Method Summary collapse

Class Method Details

.check_options_restrictions(options) ⇒ Object

Make sure command line parameters are sane



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# File 'lib/oneacct_opts.rb', line 97

def self.check_options_restrictions(options)
  #make sure date range make sense
  if options.records_from && options.records_to && options.records_from >= options.records_to
    fail ArgumentError, 'Wrong time range for records retrieval.'
  end

  #make sure only one group restriction is used
  if options.include_groups && options.exclude_groups
    fail ArgumentError, 'Mixing of group options is not possible.'
  end

  #make sure group file option is not used without specifying group restriction type
  unless options.include_groups || options.exclude_groups
    if options.groups_file
      fail ArgumentError, 'Cannot use group file without specifying group restriction type.'
    end
  end

  #make sure that timeout option is not used without blocking option
  if options.timeout && !options.blocking
    fail ArgumentError, 'Cannot set timeout without a blocking mode.'
  end
end

.check_restrictions(options) ⇒ Object 



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# File 'lib/oneacct_opts.rb', line 91

def self.check_restrictions(options)
  check_options_restrictions(options)
  check_settings_restrictions
end

.check_settings_restrictions ⇒ Object

Make sure configuration is sane



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# File 'lib/oneacct_opts.rb', line 122

def self.check_settings_restrictions
  #make sure all mandatory parameters are set
  unless Settings['site_name'] && Settings['cloud_type'] && Settings['endpoint'] &&
      Settings['output'] && Settings.output['output_dir'] && Settings.output['output_type']
    fail ArgumentError, 'Missing some mandatory parameters. Check your configuration file.'
  end
  Settings['endpoint'].chop! if Settings['endpoint'].end_with?('/')

  #make sure log file is specified while loggin to file
  if Settings['logging'] && Settings.logging['log_type'] == 'file' &&
      !Settings.logging['log_file']
    fail ArgumentError, 'Missing file for logging. Check your configuration file.'
  end

  #make sure specified template really exists
  template_filename = OneWriter.template_filename(Settings.output['output_type'])
  unless File.exist?(template_filename)
    fail ArgumentError, "Non-existing template #{Settings.output['output_type']}."
  end
end

.parse(args) ⇒ Object 



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

def self.parse(args)
  options = OpenStruct.new

  opt_parser = OptionParser.new do |opts|
    opts.banner = 'Usage oneacct-export [options]'
    opts.separator ''

    opts.on('--records-from TIME', Time,
            'Retrieves only records newer than TIME') do |time|
      options.records_from = time
    end

    opts.on('--records-to TIME', Time,
            'Retrieves only records older than TIME') do |time|
      options.records_to = time
    end

    opts.on('--include-groups GROUP1[,GROUP2,...]', Array,
            'Retrieves only records of virtual machines which '\
            'belong to the specified groups') do |groups|
      options.include_groups = groups
    end

    opts.on('--exclude-groups GROUP1[,GROUP2,...]', Array,
            'Retrieves only records of virtual machines which '\
            "don't belong to the specified groups") do |groups|
      options.exclude_groups = groups
    end

    opts.on('--group-file FILE',
            'If --include-groups or --exclude-groups specified, '\
            'loads groups from file FILE') do |file|
      options.groups_file = file
    end

    opts.on('-b', '--[no-]blocking', 'Run in a blocking mode - '\
            'wait until all submitted jobs are processed') do |blocking|
      options.blocking = blocking
    end

    opts.on('-t', '--timeout N', Integer, 'Timeout for blocking mode in seconds. '\
            'Default is 1 hour.') do |timeout|
      options.timeout = timeout
    end

    opts.on('-c', '--[no-]compatibility-mode', 'Run in compatibility mode - '\
            'supports OpenNebula 4.4.x') do |compatibility|
      options.compatibility = compatibility
    end

    opts.on_tail('-h', '--help', 'Shows this message') do
      puts opts
      exit
    end

    opts.on_tail('-v', '--version', 'Shows version') do
      puts OneacctExporter::VERSION
      exit
    end
  end

  opt_parser.parse!(args)
  set_defaults(options)

  check_restrictions(options)

  options
end

.set_defaults(options) ⇒ Object

Set default values for not specified options



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# File 'lib/oneacct_opts.rb', line 83

def self.set_defaults(options)
  options.blocking = BLOCKING_DEFAULT unless options.blocking
  unless options.timeout
    options.timeout = TIMEOUT_DEFAULT if options.blocking
  end
  options.compatibility = COMPATIBILITY_DEFAULT unless options.compatibility
end