Class: Itamae::Backend

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/itamae/backend.rb

Constant Summary collapse

UnknownBackendTypeError = 
Class.new(StandardError)
CommandExecutionError = 
Class.new(StandardError)

Instance Method Summary collapse

Instance Method Details

#get_command(*args) ⇒ Object 



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# File 'lib/itamae/backend.rb', line 109

def get_command(*args)
  Specinfra.command.get(*args)
end

#run_command(commands, options = {}) ⇒ Object 



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# File 'lib/itamae/backend.rb', line 45

def run_command(commands, options = {})
  options = {error: true}.merge(options)

  if commands.is_a?(Array)
    command = commands.map do |cmd|
      Shellwords.escape(cmd)
    end.join(' ')
  else
    command = commands
  end

  cwd = options[:cwd]
  if cwd
    command = "cd #{Shellwords.escape(cwd)} && #{command}"
  end

  user = options[:user]
  if user
    command = "sudo -u #{Shellwords.escape(user)} -- /bin/sh -c #{Shellwords.escape(command)}"
  end

  Logger.debug "Executing `#{command}`..."

  result = Specinfra::Runner.run_command(command)
  exit_status = result.exit_status

  Logger.formatter.indent do
    if exit_status == 0 || !options[:error]
      method = :debug
      message = "exited with #{exit_status}"
    else
      method = :error
      message = "Command `#{command}` failed. (exit status: #{exit_status})"
    end

    Logger.public_send(method, message)

    {"stdout" => result.stdout, "stderr" => result.stderr}.each_pair do |name, value|
      next unless value && value != ''

      if value.bytesize > 1024 * 1024
        Logger.public_send(method, "#{name} is suppressed because it's too large")
        next
      end

      value.each_line do |line|
        # remove control chars
        case line.encoding
        when Encoding::UTF_8
          line = line.tr("\u0000-\u001f\u007f\u2028",'')
        end

        Logger.public_send(method, "#{name} | #{line}")
      end
    end
  end

  if options[:error] && exit_status != 0
    raise CommandExecutionError
  end

  result
end

#send_directory(*args) ⇒ Object 



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# File 'lib/itamae/backend.rb', line 117

def send_directory(*args)
  Specinfra::Runner.send_directory(*args)
end

#send_file(*args) ⇒ Object 



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# File 'lib/itamae/backend.rb', line 113

def send_file(*args)
  Specinfra::Runner.send_file(*args)
end

#set_type(type, options = {}) ⇒ Object 



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# File 'lib/itamae/backend.rb', line 29

def set_type(type, options = {})
  case type
  when :local
    Specinfra.configuration.backend = :exec
  when :ssh
    Specinfra.configuration.request_pty = true
    Specinfra.configuration.host = options.delete(:host)
    Specinfra.configuration.disable_sudo = options.delete(:disable_sudo)
    Specinfra.configuration.ssh_options = options

    Specinfra.configuration.backend = :ssh
  else
    raise UnknownBackendTypeError, "'#{type}' backend is unknown."
  end
end