1 files changed, 80 insertions, 0 deletions
diff --git a/lib/gitlab/cleanup/orphan_job_artifact_files_batch.rb b/lib/gitlab/cleanup/orphan_job_artifact_files_batch.rb
new file mode 100644
index 00000000000..5c30258c0fc
--- /dev/null
+++ b/lib/gitlab/cleanup/orphan_job_artifact_files_batch.rb
@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Cleanup
+    class OrphanJobArtifactFilesBatch
+      BatchFull = Class.new(StandardError)
+
+      class ArtifactFile
+        attr_accessor :path
+
+        def initialize(path)
+          @path = path
+        end
+
+        def artifact_id
+          path.split('/').last.to_i
+        end
+      end
+
+      include Gitlab::Utils::StrongMemoize
+
+      attr_reader :batch_size, :dry_run
+      attr_accessor :artifact_files
+
+      def initialize(batch_size:, dry_run: true, logger: Rails.logger)
+        @batch_size = batch_size
+        @dry_run = dry_run
+        @logger = logger
+        @artifact_files = []
+      end
+
+      def clean!
+        return if artifact_files.empty?
+
+        lost_and_found.each do |artifact|
+          clean_one!(artifact)
+        end
+      end
+
+      def full?
+        artifact_files.count >= batch_size
+      end
+
+      def <<(artifact_path)
+        raise BatchFull, "Batch full! Already contains #{artifact_files.count} artifacts" if full?
+
+        artifact_files << ArtifactFile.new(artifact_path)
+      end
+
+      def lost_and_found
+        strong_memoize(:lost_and_found) do
+          artifact_file_ids = artifact_files.map(&:artifact_id)
+          existing_artifact_ids = ::Ci::JobArtifact.id_in(artifact_file_ids).pluck_primary_key
+
+          artifact_files.reject { |artifact| existing_artifact_ids.include?(artifact.artifact_id) }
+        end
+      end
+
+      private
+
+      def clean_one!(artifact_file)
+        log_debug("Found orphan job artifact file @ #{artifact_file.path}")
+
+        remove_file!(artifact_file) unless dry_run
+      end
+
+      def remove_file!(artifact_file)
+        FileUtils.rm_rf(artifact_file.path)
+      end
+
+      def log_info(msg, params = {})
+        @logger.info("#{'[DRY RUN]' if dry_run} #{msg}")
+      end
+
+      def log_debug(msg, params = {})
+        @logger.debug(msg)
+      end
+    end
+  end
+end