WIP: Restructured buildpack model

Co-authored-by: Nicolas Bender <[email protected]>

Author: 2 people

app/models/runtime/buildpack.rb

@@ -1,6 +1,11 @@
 module VCAP::CloudController
   class Buildpack < Sequel::Model
     plugin :list
+    plugin :single_table_inheritance, :lifecycle,
+      model_map: {
+        VCAP::CloudController::Lifecycles::BUILDPACK => "VCAP::CloudController::ClassicBuildpack",
+        VCAP::CloudController::Lifecycles::CNB => "VCAP::CloudController::CNBBuildpack"
+      }
 
     export_attributes :name, :stack, :position, :enabled, :locked, :filename
     import_attributes :name, :stack, :position, :enabled, :locked, :filename, :key
@@ -16,21 +21,6 @@ class Buildpack < Sequel::Model
     add_association_dependencies labels: :destroy
     add_association_dependencies annotations: :destroy
 
-    def self.list_admin_buildpacks(stack_name=nil)
-      scoped = exclude(key: nil).exclude(key: '')
-      if stack_name.present?
-        scoped = scoped.filter(Sequel.or([
-          [:stack, stack_name],
-          [:stack, nil]
-        ]))
-      end
-      scoped.order(:position).all
-    end
-
-    def self.at_last_position
-      where(position: max(:position)).first
-    end
-
     def self.user_visibility_filter(_user)
       full_dataset_filter
     end

app/models/runtime/classic_buildpack.rb

@@ -0,0 +1,20 @@
+module VCAP::CloudController
+  class ClassicBuildpack < Buildpack
+
+    def self.list_admin_buildpacks(stack_name=nil)
+      scoped = exclude(key: nil).exclude(key: '')
+      if stack_name.present?
+        scoped = scoped.filter(Sequel.or([
+          [:stack, stack_name],
+          [:stack, nil]
+        ]))
+      end
+      scoped.order(:position).all
+    end
+
+    def self.at_last_position
+      where(position: max(:position)).first
+    end
+
+  end
+end

app/models/runtime/cnb_buildpack.rb

@@ -0,0 +1,20 @@
+module VCAP::CloudController
+  class CNBBuildpack < Buildpack
+
+    def self.list_admin_buildpacks(stack_name=nil)
+      scoped = exclude(key: nil).exclude(key: '')
+      if stack_name.present?
+        scoped = scoped.filter(Sequel.or([
+          [:stack, stack_name],
+          [:stack, nil]
+        ]))
+      end
+      scoped.order(:position).all
+    end
+
+    def self.at_last_position
+      where(position: max(:position)).first
+    end
+
+  end
+end