core: add Checkpoint

lib/vagrant/environment.rb

@@ -4,6 +4,7 @@ require 'pathname'
 require 'set'
 require 'thread'
 
+require "checkpoint"
 require 'log4r'
 
 require 'vagrant/util/file_mode'
@@ -125,6 +126,18 @@ module Vagrant
       # Prepare the directories
       setup_home_path
 
+      # Run checkpoint in a background thread on every environment
+      # initialization. The cache file will cause this to mostly be a no-op
+      # most of the time.
+      @checkpoint_thr = Thread.new do
+        @checkpoint_result = Checkpoint.check(
+          product: "vagrant",
+          version: VERSION,
+          signature_file: @data_dir.join("checkpoint_signature"),
+          cache_file: @data_dir.join("checkpoint_cache"),
+        )
+      end
+
       # Setup the local data directory. If a configuration path is given,
       # then it is expanded relative to the working directory. Otherwise,
       # we use the default which is expanded relative to the root path.
@@ -243,6 +256,16 @@ module Vagrant
       end
     end
 
+    # Checkpoint returns the checkpoint result data. If checkpoint is
+    # disabled, this will return nil. See the hashicorp-checkpoint gem
+    # for more documentation on the return value.
+    #
+    # @return [Hash]
+    def checkpoint
+      @checkpoint_thr.join
+      return @checkpoint_result
+    end
+
     # Makes a call to the CLI with the given arguments as if they
     # came from the real command line (sometimes they do!). An example:
     #

test/unit/base.rb

@@ -1,5 +1,8 @@
 require "tmpdir"
 require "rubygems"
+
+# Gems
+require "checkpoint"
 require "rspec/autorun"
 
 # Require Vagrant itself so we can reference the proper
@@ -49,3 +52,6 @@ Vagrant.plugin("2").manager.registered.dup.each do |plugin|
     Vagrant.plugin("2").manager.unregister(plugin)
   end
 end
+
+# Disable checkpoint
+Checkpoint.disable!

vagrant.gemspec

@@ -20,6 +20,7 @@ Gem::Specification.new do |s|
   s.add_dependency "erubis", "~> 2.7.0"
   s.add_dependency "i18n", "~> 0.6.0"
   s.add_dependency "listen", "~> 2.7.1"
+  s.add_dependency "hashicorp-checkpoint", "~> 0.1.1"
   s.add_dependency "log4r", "~> 1.1.9", "< 1.1.11"
   s.add_dependency "net-ssh", ">= 2.6.6", "< 2.10.0"
   s.add_dependency "net-scp", "~> 1.1.0"