Method: Rake::Task.gl_run

Defined in:
lib/rake/config.rb

.gl_run(*args, &aBlock) ⇒ Object

Execute command (as is) on local_host using greenletters to enable expect like behaviour (useful for dealling with passwords).



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# File 'lib/rake/config.rb', line 654

def self.gl_run(*args, &aBlock)
  $TRACE = Rake.application.options.trace;

  options = Hash.new;
  if args.last.is_a?(Construct) then 
    raise ConfigurationError, "gl_run should not be passed a Construct";
  elsif args.last.is_a?(Hash)
    options = args.pop;
  end
  Conf.timeout = Hash.new() unless Conf.has_key?(:timeout);
  Conf.timeout.maxTimeout = 10 unless Conf.timeout.has_key?(:maxTimeout);
  if options.has_key?(:timeout) then
    options[:timeout] = Conf.timeout.maxTimeout if Conf.timeout.maxTimeout.to_i < options[:timeout].to_i ;
  else
    options[:timeout] = 10;
  end
  Conf.retries = 5 unless Conf.has_key?(:retries)
  options[:retries] = Conf.retries unless options.has_key?(:retries)

  Rake::Application.mesg args.join(' ') if $TRACE
  Rake::Application.mesg "Timeout: #{options[:timeout]}" if $TRACE
  Rake::Application.mesg "#{options}" if $TRACE && !options.empty?() && options.has_key?(:verbose);
  Rake::Application.mesg "Retries: #{options[:retries]}" if $TRACE

  asyncTriggersBlocks = Array.new;
  if options.has_key? :asyncTriggersBlocks then
    asyncTriggersBlocks = options[:asyncTriggersBlocks];
  end

  exitStatus = 0;
  if options.has_key? :exitStatus then
    exitStatus = options[:exitStatus];
  end

  options[:env] = ENV unless options.has_key?(:env);
  options[:transcript] = Rake::Application.logger unless options.has_key?(:transcript);

  attempt = 0
  tryAgain = true
  cmdProcess = nil
  while(tryAgain) do 
    attempt += 1
    tryAgain = false
    begin
      cmdProcess = Greenletters::Process.new(*args, options);
      cmdProcess.start!;

      asyncTriggersBlocks.each do | asyncTriggersBlock |
        if asyncTriggersBlock.kind_of? Proc then
          asyncTriggersBlock.call(cmdProcess);
        end
      end

      aBlock.call(cmdProcess) unless aBlock.nil?;

      cmdProcess.wait_for(:exit, exitStatus);
    rescue StandardError => se
      Rake::Application.mesg "Failed attempt #{attempt}" if $TRACE
      tryAgain = true
      raise se unless attempt < options[:retries]
    end
  end

  cmdProcess
end