[openstack|image] Image Model Updates

-added dynamic finders
-added queries for public and private images
-added function to show image metadata

lib/fog/openstack/models/image/image.rb

@@ -73,6 +73,11 @@ module Fog
           connection.get_image_members(self.id).body['members']
         end
 
+        def metadata
+          requires :id
+          connection.get_image(self.id).headers
+        end
+
       end
     end
   end

lib/fog/openstack/models/image/images.rb

@@ -16,9 +16,17 @@ module Fog
         end
 
         def find_by_id(id)
-          self.find {|image| image.id == id} ||
-            Fog::Image::OpenStack::Image.new(
-              connection.get_image(id).body['image'])
+          self.find {|image| image.id == id}
+        end
+
+        def public
+          images = load(connection.list_public_images_detailed.body['images'])
+          images.delete_if{|image| image.is_public == false}
+        end
+
+        def private
+          images = load(connection.list_public_images_detailed.body['images'])
+          images.delete_if{|image| image.is_public}
         end
 
         def destroy(id)
@@ -26,6 +34,14 @@ module Fog
           image.destroy
         end
 
+        def method_missing(method_sym, *arguments, &block)
+          if method_sym.to_s =~ /^find_by_(.*)$/
+            load(connection.list_public_images_detailed($1 ,arguments.first).body['images'])
+          else
+            super
+          end
+        end
+
       end
     end
   end

lib/fog/openstack/requests/image/list_public_images_detailed.rb

@@ -2,11 +2,18 @@ module Fog
   module Image
     class OpenStack
       class Real
-        def list_public_images_detailed
+        def list_public_images_detailed(attribute=nil, query=nil)
+
+          if attribute
+            path = "images/detail?#{attribute}=#{query}"
+          else
+            path = 'images/detail'
+          end
+
           request(
             :expects => [200, 204],
             :method  => 'GET',
-            :path    => 'images/detail'
+            :path    => path
           )
         end
       end # class Real

tests/openstack/models/image/image_tests.rb

@@ -12,6 +12,10 @@ Shindo.tests("Fog::Image[:openstack] | image", ['openstack']) do
       @instance.name == 'edit test image'
     end
 
+    tests('#get image metadata').succeeds do
+      @instance.metadata
+    end
+
     tests('#add member').succeeds do
       @instance.add_member(@instance.owner)
     end