Class: Pec2::Pssh

Inherits:
Object
  • Object
show all
Defined in:
lib/pec2/pssh.rb

Instance Method Summary collapse

Constructor Details

#initialize(options, servers, parallel = 1) ⇒ Pssh

Returns a new instance of Pssh.



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# File 'lib/pec2/pssh.rb', line 8

def initialize(options, servers, parallel = 1)
  @parallel = parallel
  color_index = 0
  colors = String.colors.select{ |color|
    !color.to_s.start_with?('light_') && !color.to_s.include?('red') && !color.to_s.include?('yellow')
  }
  @servers = servers.map { |server|
    result = {}
    result[:host] = server
    result[:color] = colors[color_index]
    if colors.size == color_index + 1
      color_index = 0
    else
      color_index = color_index + 1
    end
    result
  }
  @user = options[:user]
  @print = options[:print]
  @sudo_password = options[:sudo_password]
  @ssh_options = {
    verify_host_key: false,
    user_known_hosts_file: '/dev/null',
  }
  @logger = Logger.new(STDOUT)
end

Instance Method Details

#exec_pssh_command(command) ⇒ Object 



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# File 'lib/pec2/pssh.rb', line 35

def exec_pssh_command(command)
  return false if command.nil? || command.empty?
  error_servers = []
  Parallel.each(@servers, in_threads: @parallel) do |server|
    begin
      Net::SSH.start(server[:host], @user, @ssh_options) do |ssh|
        channel = ssh.open_channel do |channel, success|
          channel.on_data do |channel, data|
            if data =~ /^\[sudo\] password for /
              channel.send_data "#{@sudo_password}\n"
            else
              data.to_s.lines.each do |line|
                if @print
                  print %Q{#{server[:host]}:#{line}}.colorize(server[:color])
                end
              end
            end
          end
          channel.request_pty
          channel.exec(command)
          channel.wait
        end
        channel.wait
      end
    rescue => e
      error_servers << server[:host]
      puts "\n#{e.message}\n#{e.backtrace.join("\n")}"
    end
  end
  if error_servers.size > 0
    @logger.error "error servers => #{error_servers.join(', ')}".colorize(:red)
  end
  return true
end