port tools/create_box.sh to package action. close #11

lib/vagrant-libvirt/action.rb

@@ -144,8 +144,10 @@ module VagrantPlugins
 
       # not implemented and looks like not require
       def self.action_package
-        lambda do |env|
+        Vagrant::Action::Builder.new.tap do |b|
-          raise Errors::PackageNotSupported
+          b.use ConfigValidate
+          b.use ConnectLibvirt
+          b.use PackageDomain
         end
       end
 
@@ -317,6 +319,7 @@ module VagrantPlugins
 
       action_root = Pathname.new(File.expand_path('../action', __FILE__))
       autoload :ConnectLibvirt, action_root.join('connect_libvirt')
+      autoload :PackageDomain, action_root.join('package_domain')
       autoload :CreateDomain, action_root.join('create_domain')
       autoload :CreateDomainVolume, action_root.join('create_domain_volume')
       autoload :CreateNetworkInterfaces, action_root.join('create_network_interfaces')

lib/vagrant-libvirt/action/destroy_domain.rb

@@ -41,14 +41,14 @@ module VagrantPlugins
               next if disk[:allow_existing]
               diskname = libvirt_domain.name + '-' + disk[:device] + '.' + disk[:type].to_s
               # diskname is uniq
-              libvirt_disk = env[:libvirt_compute].volumes.all.select do |x|
+              libvirt_disk = domain.volumes.select do |x|
                 x.name == diskname
               end.first
               if libvirt_disk
                 libvirt_disk.destroy
               elsif disk[:path]
                 poolname = env[:machine].provider_config.storage_pool_name
-                libvirt_disk = env[:libvirt_compute].volumes.all.select do |x|
+                libvirt_disk = domain.volumes.select do |x|
                   # FIXME can remove pool/target.img and pool/123/target.img
                   x.path =~ /\/#{disk[:path]}$/ && x.pool_name == poolname
                 end.first
@@ -57,7 +57,7 @@ module VagrantPlugins
             end
 
             # remove root storage
-            root_disk = env[:libvirt_compute].volumes.all.select do |x|
+            root_disk = domain.volumes.select do |x|
               x.name == libvirt_domain.name + '.img'
             end.first
             root_disk.destroy if root_disk

lib/vagrant-libvirt/action/package_domain.rb

@@ -0,0 +1,79 @@
+require 'log4r'
+
+module VagrantPlugins
+  module ProviderLibvirt
+    module Action
+      # Action for create new box for libvirt provider
+      class PackageDomain
+        def initialize(app, env)
+          @logger = Log4r::Logger.new('vagrant_libvirt::action::package_domain')
+          @app = app
+          env['package.files'] ||= {}
+          env['package.output'] ||= 'package.box'
+        end
+
+        def call(env)
+          env[:ui].info(I18n.t('vagrant_libvirt.package_domain'))
+          libvirt_domain =  env[:libvirt_compute].client.lookup_domain_by_uuid(
+                              env[:machine].id)
+          domain = env[:libvirt_compute].servers.get(env[:machine].id.to_s)
+          root_disk = domain.volumes.select do |x|
+            x.name == libvirt_domain.name + '.img'
+          end.first
+          boxname = env['package.output']
+          raise "#{boxname}: Already exists" if File.exists?(boxname)
+          @tmp_dir = Dir.pwd + '/_tmp_package'
+          @tmp_img = @tmp_dir + '/box.img'
+          Dir.mkdir(@tmp_dir)
+          if File.readable?(root_disk.path)
+            backing = `qemu-img info "#{root_disk.path}" | grep 'backing file:' | cut -d ':' -f2`.chomp
+          else
+            env[:ui].error("Require set read access to #{root_disk.path}. sudo chmod a+r #{root_disk.path}")
+            FileUtils.rm_rf(@tmp_dir)
+            raise 'Have no access'
+          end
+          env[:ui].info('Image has backing image, copying image and rebasing ...')
+          FileUtils.cp(root_disk.path, @tmp_img)
+          `qemu-img rebase -p -b "" #{@tmp_img}`
+          Dir.chdir(@tmp_dir)
+          img_size = `qemu-img info #{@tmp_img} | grep 'virtual size' | awk '{print $3;}' | tr -d 'G'`.chomp
+          File.write(@tmp_dir + '/metadata.json', metadata_content(img_size))
+          File.write(@tmp_dir + '/Vagrantfile',vagrantfile_content)
+          assebmle_box(boxname)
+          FileUtils.mv(@tmp_dir + '/' + boxname, '../' + boxname)
+          env[:ui].info('Box created')
+          env[:ui].info('You can now add the box:')
+          env[:ui].info("vagrant box add #{boxname} --name any_comfortable_name")
+          @app.call(env)
+        end
+
+        def assebmle_box(boxname)
+          `tar cvzf "#{boxname}" --totals ./metadata.json ./Vagrantfile ./box.img`
+        end
+
+        def vagrantfile_content
+          <<-EOF
+            Vagrant.configure("2") do |config|
+              config.vm.provider :libvirt do |libvirt|
+                libvirt.driver = "kvm"
+                libvirt.host = ""
+                libvirt.connect_via_ssh = false
+                libvirt.storage_pool_name = "default"
+              end
+            end
+          EOF
+        end
+
+        def metadata_content(filesize)
+          <<-EOF
+            {
+              "provider": "libvirt",
+              "format": "qcow2",
+              "virtual_size": #{filesize}
+            }
+          EOF
+        end
+      end
+    end
+  end
+end