Class: Vagrant::Action::Builtin::WaitForCommunicator

Inherits:
Object
  • Object
show all
Defined in:
lib/vagrant/action/builtin/wait_for_communicator.rb

Overview

This waits for the communicator to be ready for a set amount of time.

Instance Method Summary collapse

Constructor Details

#initialize(app, env, states = nil) ⇒ WaitForCommunicator

Returns a new instance of WaitForCommunicator.



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# File 'lib/vagrant/action/builtin/wait_for_communicator.rb', line 10

def initialize(app, env, states=nil)
  @app    = app
  @states = states
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vagrant/action/builtin/wait_for_communicator.rb', line 15

def call(env)
  # Wait for ready in a thread so that we can continually check
  # for interrupts.
  ready_thr = Thread.new do
    Thread.current[:result] = env[:machine].communicate.wait_for_ready(
      env[:machine].config.vm.boot_timeout)
  end

  # Start a thread that verifies the VM stays in a good state.
  states_thr = Thread.new do
    Thread.current[:result] = true

    # Otherwise, periodically verify the VM isn't in a bad state.
    while true
      state = env[:machine].state.id

      # Used to report invalid states
      Thread.current[:last_known_state] = state

      # Check if we have the proper state so we can break out
      if @states && !@states.include?(state)
        Thread.current[:result] = false
        break
      end

      # Sleep a bit so we don't hit 100% CPU constantly.
      sleep 1
    end
  end

  # Wait for a result or an interrupt
  env[:ui].output(I18n.t("vagrant.boot_waiting"))
  while ready_thr.alive? && states_thr.alive?
    sleep 1
    return if env[:interrupted]
  end

  # Join so that they can raise exceptions if there were any
  ready_thr.join if !ready_thr.alive?
  states_thr.join if !states_thr.alive?

  # If it went into a bad state, then raise an error
  if !states_thr[:result]
    raise Errors::VMBootBadState,
      valid: @states.join(", "),
      invalid: states_thr[:last_known_state]
  end

  # If it didn't boot, raise an error
  if !ready_thr[:result]
    raise Errors::VMBootTimeout
  end

  env[:ui].output(I18n.t("vagrant.boot_completed"))

  # Make sure our threads are all killed
  ready_thr.kill
  states_thr.kill

  @app.call(env)
ensure
  ready_thr.kill
  states_thr.kill
end