1 files changed, 36 insertions, 0 deletions
diff --git a/lib/gitlab/github_import/importer/events/base_importer.rb b/lib/gitlab/github_import/importer/events/base_importer.rb
new file mode 100644
index 00000000000..9ab1d916d33
--- /dev/null
+++ b/lib/gitlab/github_import/importer/events/base_importer.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module GithubImport
+    module Importer
+      module Events
+        # Base class for importing issue events during project import from GitHub
+        class BaseImporter
+          # project - An instance of `Project`.
+          # client - An instance of `Gitlab::GithubImport::Client`.
+          def initialize(project, client)
+            @project = project
+            @user_finder = UserFinder.new(project, client)
+          end
+
+          # issue_event - An instance of `Gitlab::GithubImport::Representation::IssueEvent`.
+          def execute(issue_event)
+            raise NotImplementedError
+          end
+
+          private
+
+          attr_reader :project, :user_finder
+
+          def author_id(issue_event, author_key: :actor)
+            user_finder.author_id_for(issue_event, author_key: author_key).first
+          end
+
+          def issuable_db_id(object)
+            IssuableFinder.new(project, object).database_id
+          end
+        end
+      end
+    end
+  end
+end