1 files changed, 0 insertions, 103 deletions
diff --git a/lib/gitlab/import_export/base_object_builder.rb b/lib/gitlab/import_export/base_object_builder.rb
deleted file mode 100644
index ec66b7a7a4f..00000000000
--- a/lib/gitlab/import_export/base_object_builder.rb
+++ /dev/null
@@ -1,103 +0,0 @@
-# frozen_string_literal: true
-
-module Gitlab
-  module ImportExport
-    # Base class for Group & Project Object Builders.
-    # This class is not intended to be used on its own but
-    # rather inherited from.
-    #
-    # Cache keeps 1000 entries at most, 1000 is chosen based on:
-    #    - one cache entry uses around 0.5K memory, 1000 items uses around 500K.
-    #      (leave some buffer it should be less than 1M). It is afforable cost for project import.
-    #    - for projects in Gitlab.com, it seems 1000 entries for labels/milestones is enough.
-    #      For example, gitlab has ~970 labels and 26 milestones.
-    LRU_CACHE_SIZE = 1000
-
-    class BaseObjectBuilder
-      def self.build(*args)
-        new(*args).find
-      end
-
-      def initialize(klass, attributes)
-        @klass = klass.ancestors.include?(Label) ? Label : klass
-        @attributes = attributes
-
-        if Gitlab::SafeRequestStore.active?
-          @lru_cache = cache_from_request_store
-          @cache_key = [klass, attributes]
-        end
-      end
-
-      def find
-        find_with_cache do
-          find_object || klass.create(prepare_attributes)
-        end
-      end
-
-      protected
-
-      def where_clauses
-        raise NotImplementedError
-      end
-
-      # attributes wrapped in a method to be
-      # adjusted in sub-class if needed
-      def prepare_attributes
-        attributes
-      end
-
-      private
-
-      attr_reader :klass, :attributes, :lru_cache, :cache_key
-
-      def find_with_cache
-        return yield unless lru_cache && cache_key
-
-        lru_cache[cache_key] ||= yield
-      end
-
-      def cache_from_request_store
-        Gitlab::SafeRequestStore[:lru_cache] ||= LruRedux::Cache.new(LRU_CACHE_SIZE)
-      end
-
-      def find_object
-        klass.where(where_clause).first
-      end
-
-      def where_clause
-        where_clauses.reduce(:and)
-      end
-
-      def table
-        @table ||= klass.arel_table
-      end
-
-      # Returns Arel clause:
-      # `"{table_name}"."{attrs.keys[0]}" = '{attrs.values[0]} AND {table_name}"."{attrs.keys[1]}" = '{attrs.values[1]}"`
-      # from the given Hash of attributes.
-      def attrs_to_arel(attrs)
-        attrs.map do |key, value|
-          table[key].eq(value)
-        end.reduce(:and)
-      end
-
-      # Returns Arel clause `"{table_name}"."title" = '{attributes['title']}'`
-      # if attributes has 'title key, otherwise `nil`.
-      def where_clause_for_title
-        attrs_to_arel(attributes.slice('title'))
-      end
-
-      # Returns Arel clause `"{table_name}"."description" = '{attributes['description']}'`
-      # if attributes has 'description key, otherwise `nil`.
-      def where_clause_for_description
-        attrs_to_arel(attributes.slice('description'))
-      end
-
-      # Returns Arel clause `"{table_name}"."created_at" = '{attributes['created_at']}'`
-      # if attributes has 'created_at key, otherwise `nil`.
-      def where_clause_for_created_at
-        attrs_to_arel(attributes.slice('created_at'))
-      end
-    end
-  end
-end