Method: Beaker::SshConnection#wait_for_connection_failure

Defined in:
lib/beaker/ssh_connection.rb

#wait_for_connection_failure(options = {}, stdout_callback = nil, stderr_callback = stdout_callback) ⇒ Boolean

Wait for the ssh connection to fail, returns true on connection failure and false otherwise

Parameters:

  • options (Hash{Symbol=>String}) (defaults to: {}) —

    Options hash to control method conditionals

  • stdout_callback (IO) (defaults to: nil) —

    An IO stream to send connection stdout to, defaults to nil

  • stderr_callback (IO) (defaults to: stdout_callback) —

    An IO stream to send connection stderr to, defaults to nil

Options Hash (options):

  • :pty (Boolean) —

    Should we request a terminal when attempting to send a command over this connection?

  • :stdin (String) —

    Any input to be sent along with the command

Returns:

  • (Boolean) —

    true if connection failed, false otherwise



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# File 'lib/beaker/ssh_connection.rb', line 151

def wait_for_connection_failure options = {}, stdout_callback = nil, stderr_callback = stdout_callback
  try = 1
  last_wait = 2
  wait = 3
  command = 'echo echo' #can be run on all platforms (I'm looking at you, windows)
  while try < 11
    result = Result.new(@hostname, command)
    begin
      @logger.notify "Waiting for connection failure on #{@hostname} (attempt #{try}, try again in #{wait} second(s))"
      @logger.debug("\n#{@hostname} #{Time.new.strftime('%H:%M:%S')}$ #{command}")
      @ssh.open_channel do |channel|
        request_terminal_for( channel, command ) if options[:pty]

        channel.exec(command) do |terminal, success|
          raise Net::SSH::Exception.new("FAILED: to execute command on a new channel on #{@hostname}") unless success
          register_stdout_for terminal, result, stdout_callback
          register_stderr_for terminal, result, stderr_callback
          register_exit_code_for terminal, result

          process_stdin_for( terminal, options[:stdin] ) if options[:stdin]
         end
       end
       loop_tries = 0
       #loop is actually loop_forever, so let it try 3 times and then quit instead of endless blocking
       @ssh.loop { loop_tries += 1 ; loop_tries < 4 }
    rescue *RETRYABLE_EXCEPTIONS => e
      @logger.debug "Connection on #{@hostname} failed as expected (#{e.class.name} - #{e.message})"
      close #this connection is bad, shut it down
      return true
    end
    slept = 0
    stdout_callback.call("sleep #{wait} second(s): ")
    while slept < wait
      sleep slept
      stdout_callback.call('.')
      slept += 1
    end
    stdout_callback.call("\n")
    (last_wait, wait) = wait, last_wait + wait
    try += 1
  end
  false
end