1 files changed, 28 insertions, 0 deletions
diff --git a/lib/gitlab/ci/pipeline/preloader.rb b/lib/gitlab/ci/pipeline/preloader.rb
new file mode 100644
index 00000000000..e7a2e5511cf
--- /dev/null
+++ b/lib/gitlab/ci/pipeline/preloader.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Pipeline
+      # Class for preloading data associated with pipelines such as commit
+      # authors.
+      module Preloader
+        def self.preload(pipelines)
+          # This ensures that all the pipeline commits are eager loaded before we
+          # start using them.
+          pipelines.each(&:commit)
+
+          pipelines.each do |pipeline|
+            # This preloads the author of every commit. We're using "lazy_author"
+            # here since "author" immediately loads the data on the first call.
+            pipeline.commit.try(:lazy_author)
+
+            # This preloads the number of warnings for every pipeline, ensuring
+            # that Ci::Pipeline#has_warnings? doesn't execute any additional
+            # queries.
+            pipeline.number_of_warnings
+          end
+        end
+      end
+    end
+  end
+end