Class: RightScale::LogLevelManager

Inherits:
Object
  • Object
show all
Defined in:
lib/right_agent/scripts/log_level_manager.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.run ⇒ Object

Convenience wrapper for creating and running log level manager

Return

true

Always return true



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# File 'lib/right_agent/scripts/log_level_manager.rb', line 48

def self.run
  m = LogLevelManager.new
  m.manage(m.parse_args)
end

Instance Method Details

#manage(options) ⇒ Object

Handle log level request

Parameters

options(Hash)

Command line options

Return

true

Always return true



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# File 'lib/right_agent/scripts/log_level_manager.rb', line 60

def manage(options)
  # Initialize configuration directory setting
  AgentConfig.cfg_dir = options[:cfg_dir]

  # Determine command
  level = options[:level]
  command = { :name => (level ? 'set_log_level' : 'get_log_level') }
  command[:level] = level.to_sym if level

  # Determine candidate agents
  agent_names = if options[:agent_name]
    [options[:agent_name]]
  else
    AgentConfig.cfg_agents
  end
  fail("No agents configured") if agent_names.empty?

  # Perform command for each agent
  count = 0
  agent_names.each do |agent_name|
    count += 1 if request_log_level(agent_name, command, options)
  end
  puts("No agents running") if count == 0
  true
end

#parse_args ⇒ Object

Create options hash from command line arguments

Return

options(Hash)

Hash of options as defined by the command line



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# File 'lib/right_agent/scripts/log_level_manager.rb', line 90

def parse_args
  options = { :verbose => false }
  options[:agent_name] = ARGV[0] unless ARGV[0] =~ /^-/

  opts = OptionParser.new do |opts|

    opts.on('-l', '--log-level LEVEL') do |l|
      fail("Invalid log level '#{l}'") unless AgentManager::LEVELS.include?(l.downcase.to_sym)
      options[:level] = l.downcase
    end

    opts.on("-c", "--cfg-dir DIR") do |d|
      options[:cfg_dir] = d
    end

    opts.on('-v', '--verbose') do
      options[:verbose] = true
    end

  end

  opts.on_tail('--help') do
     puts Usage.scan(__FILE__)
     exit
  end

  begin
    opts.parse!(ARGV)
  rescue Exception => e
    exit 0 if e.is_a?(SystemExit)
    fail(e.message + "\nUse 'rlog --help' for additional information")
  end
  options
end