Module: Centurion::Shell

Defined in:
lib/centurion/shell.rb

Class Method Summary collapse

Class Method Details

.echo(command) ⇒ Object 



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# File 'lib/centurion/shell.rb', line 4

def self.echo(command)
  if Thread.list.find_all { |t| t.status == 'run' }.count > 1
    run_without_echo(command)
  else
    run_with_echo(command)
  end
end

.run_with_echo(command) ⇒ Object 



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# File 'lib/centurion/shell.rb', line 32

def self.run_with_echo(command)
  $stdout.sync = true
  $stderr.sync = true
  IO.popen(command) do |io|
    io.each_char { |char| print char }
  end
  validate_status(command)
end

.run_without_echo(command) ⇒ Object 



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# File 'lib/centurion/shell.rb', line 12

def self.run_without_echo(command)
  output = Queue.new
  output_thread = Thread.new do
    while true do
      begin
        puts output.pop
      rescue => e
        info "Rescuing... #{e.message}"
      end
    end
  end

  IO.popen(command) do |io|
    io.each_line { |line| output << line }
  end

  output_thread.kill
  validate_status(command)
end

.validate_status(command) ⇒ Object 



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# File 'lib/centurion/shell.rb', line 41

def self.validate_status(command)
  unless $?.success?
    raise "The command failed with a non-zero exit status: #{$?.exitstatus}. Command: '#{command}'"
  end
end