From 1c2116f317d7e6eabcef3b5dc4bdeb4a169928b6 Mon Sep 17 00:00:00 2001
From: Fabio Rehm <fgrehm@gmail.com>
Date: Fri, 14 Feb 2014 00:28:12 -0200
Subject: [PATCH] Support for offline provisioning of apt-packages by caching
 `/var/lib/apt/lists` [GH-84]

---
 CHANGELOG.md                                  |  1 +
 lib/vagrant-cachier/bucket.rb                 |  1 +
 lib/vagrant-cachier/bucket/apt_lists.rb       | 33 +++++++++++++++++++
 .../cap/debian/apt_lists_dir.rb               | 13 ++++++++
 lib/vagrant-cachier/capabilities.rb           |  5 +++
 5 files changed, 53 insertions(+)
 create mode 100644 lib/vagrant-cachier/bucket/apt_lists.rb
 create mode 100644 lib/vagrant-cachier/cap/debian/apt_lists_dir.rb

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f88a3a1..c67cc9c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ BACKWARDS INCOMPATIBILITY:
 
 FEATURES:
 
+  - Support for offline provisioning of apt-packages by caching `/var/lib/apt/lists` [GH-84]
   - Support for specifying custom cache bucket synced folder opts
   - Support to force disabe the plugin [GH-72]
   - Automatically disable the plugin for cloud providers [GH-45]
diff --git a/lib/vagrant-cachier/bucket.rb b/lib/vagrant-cachier/bucket.rb
index 7f38131..66fbd6b 100644
--- a/lib/vagrant-cachier/bucket.rb
+++ b/lib/vagrant-cachier/bucket.rb
@@ -40,6 +40,7 @@ require_relative "bucket/pacman"
 require_relative "bucket/yum"
 require_relative "bucket/rvm"
 require_relative "bucket/apt_cacher"
+require_relative "bucket/apt_lists"
 require_relative "bucket/composer"
 require_relative "bucket/npm"
 require_relative "bucket/zypper"
diff --git a/lib/vagrant-cachier/bucket/apt_lists.rb b/lib/vagrant-cachier/bucket/apt_lists.rb
new file mode 100644
index 0000000..65ed60f
--- /dev/null
+++ b/lib/vagrant-cachier/bucket/apt_lists.rb
@@ -0,0 +1,33 @@
+module VagrantPlugins
+  module Cachier
+    class Bucket
+      class AptLists < Bucket
+        def self.capability
+          :apt_lists_dir
+        end
+
+        def install
+          machine = @env[:machine]
+          guest   = machine.guest
+
+          if guest.capability?(:apt_lists_dir)
+            guest_path = guest.capability(:apt_lists_dir)
+
+            @env[:cache_dirs] << guest_path
+
+            machine.communicate.tap do |comm|
+              comm.execute("mkdir -p /tmp/vagrant-cache/#{@name}/partial")
+              unless comm.test("test -L #{guest_path}")
+                comm.sudo("rm -rf #{guest_path}")
+                comm.sudo("mkdir -p `dirname #{guest_path}`")
+                comm.sudo("ln -s /tmp/vagrant-cache/#{@name} #{guest_path}")
+              end
+            end
+          else
+            @env[:ui].info I18n.t('vagrant_cachier.skipping_bucket', bucket: 'apt-lists')
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/vagrant-cachier/cap/debian/apt_lists_dir.rb b/lib/vagrant-cachier/cap/debian/apt_lists_dir.rb
new file mode 100644
index 0000000..7d454e8
--- /dev/null
+++ b/lib/vagrant-cachier/cap/debian/apt_lists_dir.rb
@@ -0,0 +1,13 @@
+module VagrantPlugins
+  module Cachier
+    module Cap
+      module Debian
+        module AptListsDir
+          def self.apt_lists_dir(machine)
+            '/var/lib/apt/lists'
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/vagrant-cachier/capabilities.rb b/lib/vagrant-cachier/capabilities.rb
index 81323ac..a6b46ef 100644
--- a/lib/vagrant-cachier/capabilities.rb
+++ b/lib/vagrant-cachier/capabilities.rb
@@ -36,6 +36,11 @@ module VagrantPlugins
         Cap::Debian::AptCacherDir
       end
 
+      guest_capability 'debian', 'apt_lists_dir' do
+        require_relative 'cap/debian/apt_lists_dir'
+        Cap::Debian::AptListsDir
+      end
+
       guest_capability 'redhat', 'yum_cache_dir' do
         require_relative 'cap/redhat/yum_cache_dir'
         Cap::RedHat::YumCacheDir