Class: Vagrant::Action::Runner

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

Constant Summary collapse

@@reported_interrupt = 
false

Instance Method Summary collapse

Constructor Details

#initialize(globals = nil, &block) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/vagrant/action/runner.rb', line 12

def initialize(globals=nil, &block)
  @globals      = globals || {}
  @lazy_globals = block
  @logger       = Log4r::Logger.new("vagrant::action::runner")
end

Instance Method Details

#run(callable_id, options = nil) ⇒ Object 



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# File 'lib/vagrant/action/runner.rb', line 18

def run(callable_id, options=nil)
  callable = callable_id
  if !callable.kind_of?(Builder)
    if callable_id.kind_of?(Class) || callable_id.respond_to?(:call)
      callable = Builder.build(callable_id)
    end
  end

  if !callable || !callable.respond_to?(:call)
    raise ArgumentError,
      "Argument to run must be a callable object or registered action."
  end

  # Create the initial environment with the options given
  environment = {}
  environment.merge!(@globals)
  environment.merge!(@lazy_globals.call) if @lazy_globals
  environment.merge!(options || {})

  if Vagrant::Util::Experimental.feature_enabled?("typed_triggers")
    # NOTE: Triggers are initialized later in the Action::Runer because of
    # how `@lazy_globals` are evaluated. Rather than trying to guess where
    # the `env` is coming from, we can wait until they're merged into a single
    # hash above.
    env = environment[:env]
    machine = environment[:machine]
    machine_name = machine.name if machine

    ui = Vagrant::UI::Prefixed.new(env.ui, "vagrant")
    triggers = Vagrant::Plugin::V2::Trigger.new(env, env.vagrantfile.config.trigger, machine, ui)
  end

  # Setup the action hooks
  hooks = Vagrant.plugin("2").manager.action_hooks(environment[:action_name])
  if !hooks.empty?
    @logger.info("Preparing hooks for middleware sequence...")
    environment[:action_hooks] = hooks.map do |hook_proc|
      Hook.new.tap do |h|
        hook_proc.call(h)
      end
    end

    @logger.info("#{environment[:action_hooks].length} hooks defined.")
  end

  # Run the action chain in a busy block, marking the environment as
  # interrupted if a SIGINT occurs, and exiting cleanly once the
  # chain has been run.
  ui = environment[:ui] if environment.key?(:ui)
  int_callback = lambda do
    if environment[:interrupted]
      if ui
        begin
          ui.error I18n.t("vagrant.actions.runner.exit_immediately")
        rescue ThreadError
          # We're being called in a trap-context. Wrap in a thread.
          Thread.new {
            ui.error I18n.t("vagrant.actions.runner.exit_immediately")
          }.join(THREAD_MAX_JOIN_TIMEOUT)
        end
      end
      abort
    end

    if ui && !@@reported_interrupt
      begin
        ui.warn I18n.t("vagrant.actions.runner.waiting_cleanup")
      rescue ThreadError
        # We're being called in a trap-context. Wrap in a thread.
        Thread.new {
          ui.warn I18n.t("vagrant.actions.runner.waiting_cleanup")
        }.join(THREAD_MAX_JOIN_TIMEOUT)
      end
    end
    environment[:interrupted] = true
    @@reported_interrupt = true
  end

  action_name = environment[:action_name]

  triggers.fire_triggers(action_name, :before, machine_name, :hook) if Vagrant::Util::Experimental.feature_enabled?("typed_triggers")

  # We place a process lock around every action that is called
  @logger.info("Running action: #{environment[:action_name]} #{callable_id}")
  Util::Busy.busy(int_callback) { callable.call(environment) }

  triggers.fire_triggers(action_name, :after, machine_name, :hook) if Vagrant::Util::Experimental.feature_enabled?("typed_triggers")

  # Return the environment in case there are things in there that
  # the caller wants to use.
  environment
end