Initial commit

.gitignore

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+*.gem
+*.rbc
+.bundle
+.config
+.yardoc
+Gemfile.lock
+InstalledFiles
+_yardoc
+coverage
+doc/
+lib/bundler/man
+pkg
+rdoc
+spec/reports
+test/tmp
+test/version_tmp
+tmp

Gemfile

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+source 'https://rubygems.org'
+gemspec

LICENSE

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+Copyright (c) 2012 Andrew Vit
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# Vagrant apt-cache
+
+Share a common package cache among all VM instances. This gem will share a directory from the host to the `/var/cache/apt` on guest VMs to avoid downloading already-downloaded packages when building VMs.
+
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+    gem 'vagrant-apt_cache'
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install vagrant-apt_cache
+
+## Usage
+
+No configuration is currently provided. This gem is autoloaded by Vagrant.
+
+## Contributing
+
+1. Fork it
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Added some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create new Pull Request

Rakefile

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+#!/usr/bin/env rake
+require "bundler/gem_tasks"

lib/vagrant-apt_cache.rb

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+require 'vagrant-apt_cache/version'
+require 'vagrant-apt_cache/register_shared_folder'
+require 'vagrant-apt_cache/middleware'
+
+Vagrant.actions[:start].insert_before(
+  Vagrant::Action::VM::ShareFolders, Vagrant::AptCache::Middleware
+)

lib/vagrant-apt_cache/middleware.rb

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+module Vagrant
+  module AptCache
+
+    class Middleware
+      def initialize(app, env, options={})
+        @app = app
+        @env = env
+        @options = options
+      end
+
+      def call(env)
+        @env = env
+
+        if is_apt_managed?
+          Vagrant::AptCache::RegisterSharedFolder.new(@env[:vm]).run
+        end
+
+        @app.call(env)
+      end
+
+      private
+
+      def guest
+        @env[:vm].guest
+      end
+
+      def is_apt_managed?
+        [
+          Vagrant::Guest::Debian,
+          Vagrant::Guest::Ubuntu
+        ].any? { |deb_distro| guest.is_a? deb_distro }
+      end
+    end
+
+  end
+end

lib/vagrant-apt_cache/register_shared_folder.rb

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+module Vagrant
+  module AptCache
+
+    class RegisterSharedFolder
+      def initialize(vm, options={})
+        @vm = vm
+        @options = options
+      end
+
+      def run
+        config_vm.share_folder("v-apt-cache",
+                               guest_apt_cache_dir, host_apt_cache_dir)
+      end
+
+      private
+
+      def config_vm
+        @vm.config.vm
+      end
+
+      def guest_apt_cache_dir
+        "/var/cache/apt/archives"
+      end
+
+      def host_apt_cache_dir
+        prefix      = File.expand_path(Vagrant::Environment::DEFAULT_HOME)
+        cache_dir   = File.join(prefix, 'cache', 'apt', @vm.box.name)
+        partial_dir = File.join(cache_dir, 'partial')
+        FileUtils.mkdir_p(partial_dir) unless File.exists? partial_dir
+        cache_dir
+      end
+    end
+
+  end
+end

lib/vagrant-apt_cache/version.rb

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+module Vagrant
+  module AptCache
+    VERSION = "0.0.1"
+  end
+end

lib/vagrant_init.rb

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+require 'vagrant-apt_cache'

vagrant-apt_cache.gemspec

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+# -*- encoding: utf-8 -*-
+require File.expand_path('../lib/vagrant-apt_cache/version', __FILE__)
+
+Gem::Specification.new do |gem|
+  gem.authors       = ["Andrew Vit"]
+  gem.email         = ["andrew@avit.ca"]
+  gem.description   = <<-DESC
+    Shares the /var/cache/apt/ folder for Ubuntu/Debian instances by storing
+    already-downloaded packages on the host.
+  DESC
+  gem.summary       = %q{Share apt-cache among vagrant VMs of the same box type}
+  gem.homepage      = "http://github.com/avit/vagrant-apt_cache"
+
+  gem.files         = `git ls-files`.split($\)
+  gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
+  gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
+  gem.name          = "vagrant-apt_cache"
+  gem.require_paths = ["lib"]
+  gem.version       = Vagrant::AptCache::VERSION
+end