Class: Vagrant::Action::VM::Modify

Inherits:
Object
  • Object
show all
Includes:
Util::StackedProcRunner
Defined in:
lib/vagrant/action/vm/modify.rb

Overview

This class allows other actions on the virtual machine object to be consolidated under a single write lock. This vastly speeds up modification of virtual machines. This should be used whereever possible when dealing with virtual machine modifications.

Instance Method Summary collapse

Methods included from Util::StackedProcRunner

#proc_stack, #push_proc, #run_procs!

Constructor Details

#initialize(app, env) ⇒ Modify

Returns a new instance of Modify.



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# File 'lib/vagrant/action/vm/modify.rb', line 11

def initialize(app, env)
  @app = app

  # Initialize the proc_stack, which should already be empty
  # but just making sure here.
  proc_stack.clear

  # Create the lambda in the environment which is to be called
  # to add new procs to the modification sequence.
  env["vm.modify"] = lambda do |*procs|
    procs.each { |p| push_proc(&p) }
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vagrant/action/vm/modify.rb', line 25

def call(env)
  # Run the procs we have saved up, save the machine, and reload
  # to verify we get the new settings
  run_procs!(env["vm"].vm)
  env["vm"].vm.save
  env["vm"].reload!

  @app.call(env)
end