apt-cacher bucket + capability

lib/vagrant-cachier/bucket.rb

@@ -38,3 +38,4 @@ require_relative "bucket/gem"
 require_relative "bucket/pacman"
 require_relative "bucket/yum"
 require_relative "bucket/rvm"
+require_relative "bucket/apt_cacher"

lib/vagrant-cachier/bucket/apt_cacher.rb

@@ -0,0 +1,35 @@
+# Apt-Cacher NG is a caching proxy for software packages which are downloaded by Unix/Linux system distribution mechanisms from mirror servers accessible via HTTP.
+module VagrantPlugins
+  module Cachier
+    class Bucket
+      class AptCacher < Bucket
+        def self.capability
+          :apt_cacher_dir
+        end
+
+        def install
+          machine = @env[:machine]
+          guest   = machine.guest
+
+          if guest.capability?(:apt_cacher_dir)
+            guest_path = guest.capability(:apt_cacher_dir)
+
+            @env[:cache_dirs] << guest_path
+
+            machine.communicate.tap do |comm|
+              comm.execute("mkdir -p /tmp/vagrant-cache/#{@name}")
+              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
+            # TODO: Raise a better error
+            raise "You've configured an APT-CACHER cache for a guest machine that does not support it!"
+          end
+        end
+      end
+    end
+  end
+end

lib/vagrant-cachier/cap/debian/apt_cacher_dir.rb

@@ -0,0 +1,14 @@
+module VagrantPlugins
+  module Cachier
+    module Cap
+      module Debian
+        module AptCacherDir
+          def self.apt_cacher_dir(machine)
+            # cat /etc/apt-cacher-ng/acng.conf |grep CacheDir
+            '/var/cache/apt-cacher-ng'
+          end
+        end
+      end
+    end
+  end
+end

lib/vagrant-cachier/plugin.rb

@@ -23,6 +23,11 @@ module VagrantPlugins
         Cap::Debian::AptCacheDir
       end
 
+      guest_capability 'debian', 'apt_cacher_dir' do
+        require_relative 'cap/debian/apt_cacher_dir'
+        Cap::Debian::AptCacherDir
+      end
+
       guest_capability 'redhat', 'yum_cache_dir' do
         require_relative 'cap/redhat/yum_cache_dir'
         Cap::RedHat::YumCacheDir