1 files changed, 27 insertions, 0 deletions
diff --git a/db/post_migrate/20220308115502_schedule_reset_duplicate_ci_runners_token_values_on_projects.rb b/db/post_migrate/20220308115502_schedule_reset_duplicate_ci_runners_token_values_on_projects.rb
new file mode 100644
index 00000000000..f076b0a740e
--- /dev/null
+++ b/db/post_migrate/20220308115502_schedule_reset_duplicate_ci_runners_token_values_on_projects.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+class ScheduleResetDuplicateCiRunnersTokenValuesOnProjects < Gitlab::Database::Migration[1.0]
+  MIGRATION = 'ResetDuplicateCiRunnersTokenValuesOnProjects'
+  TOKEN_COLUMN_NAME = :runners_token
+  TEMP_INDEX_NAME = "tmp_index_projects_on_id_and_#{TOKEN_COLUMN_NAME}"
+  BATCH_SIZE = 10_000
+  DELAY_INTERVAL = 2.minutes
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :projects, [:id, TOKEN_COLUMN_NAME], where: "#{TOKEN_COLUMN_NAME} IS NOT NULL", unique: false, name: TEMP_INDEX_NAME
+
+    queue_background_migration_jobs_by_range_at_intervals(
+      Gitlab::BackgroundMigration::ResetDuplicateCiRunnersTokenValuesOnProjects::Project.base_query,
+      MIGRATION,
+      DELAY_INTERVAL,
+      batch_size: BATCH_SIZE,
+      track_jobs: true
+    )
+  end
+
+  def down
+    remove_concurrent_index_by_name(:projects, name: TEMP_INDEX_NAME)
+  end
+end