add zypper support

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## [0.4.2](https://github.com/fgrehm/vagrant-cachier/compare/v0.4.1...master) (unreleased)
 
+FEATURES:
+
+  - Support for [zypper] [GH-54]
+
 ## [0.4.1](https://github.com/fgrehm/vagrant-cachier/compare/v0.4.0...v0.4.1) (Oct 27, 2013)
 
 BUG FIXES:

README.md

@@ -142,7 +142,20 @@ _Please note that to avoid re-downloading packages, you should avoid `apt-get cl
 as much as possible in order to make a better use of the cache, even if you are
 packaging a box_
 
-##### Yum
+##### Zypper
+
+```ruby
+Vagrant.configure("2") do |config|
+  config.vm.box = 'some-suse-box'
+  config.cache.enable :zypper
+end
+```
+
+Used by SuSE guests, will get configured under guest's `/var/cache/zypper/packages`. It will
+also [make sure](lib/vagrant-cachier/bucket/zypper.rb#L20) that `keep-packages` is enabled
+for all repositories.
+
+###### Yum
 
 ```ruby
 Vagrant.configure("2") do |config|

lib/vagrant-cachier/bucket.rb

@@ -42,3 +42,4 @@ require_relative "bucket/rvm"
 require_relative "bucket/apt_cacher"
 require_relative "bucket/composer"
 require_relative "bucket/npm"
+require_relative "bucket/zypper"

lib/vagrant-cachier/bucket/zypper.rb

@@ -0,0 +1,36 @@
+module VagrantPlugins
+  module Cachier
+    class Bucket
+      class Zypper < Bucket
+        def self.capability
+          :zypper_cache_dir
+        end
+
+        def install
+          machine = @env[:machine]
+          guest   = machine.guest
+
+          if guest.capability?(:zypper_cache_dir)
+            guest_path = guest.capability(:zypper_cache_dir)
+
+            @env[:cache_dirs] << guest_path
+
+            machine.communicate.tap do |comm|
+              # Ensure caching is enabled
+              comm.sudo("zypper modifyrepo --keep-packages --all")
+
+              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
+            @env[:ui].info I18n.t('vagrant_cachier.skipping_bucket', bucket: 'Zypper')
+          end
+        end
+      end
+    end
+  end
+end

lib/vagrant-cachier/cap/suse/zypper_cache_dir.rb

@@ -0,0 +1,14 @@
+module VagrantPlugins
+  module Cachier
+    module Cap
+      module SuSE
+        module ZypperCacheDir
+          def self.zypper_cache_dir(machine)
+            # TODO: Find out if there is a config file we can read from
+            '/var/cache/zypp/packages'
+          end
+        end
+      end
+    end
+  end
+end

lib/vagrant-cachier/plugin.rb

@@ -61,6 +61,11 @@ module VagrantPlugins
         Cap::Arch::PacmanCacheDir
       end
 
+      guest_capability 'suse', 'zypper_cache_dir' do
+        require_relative 'cap/suse/zypper_cache_dir'
+        Cap::SuSE::ZypperCacheDir
+      end
+
       # TODO: This should be generic, we don't want to hard code every single
       #       possible provider action class that Vagrant might have
       ensure_single_cache_root = lambda do |hook|