1 files changed, 20 insertions, 0 deletions
diff --git a/db/migrate/20210106061254_add_unique_index_for_golang_packages.rb b/db/migrate/20210106061254_add_unique_index_for_golang_packages.rb
new file mode 100644
index 00000000000..44237699fda
--- /dev/null
+++ b/db/migrate/20210106061254_add_unique_index_for_golang_packages.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddUniqueIndexForGolangPackages < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  INDEX_NAME = 'index_packages_on_project_id_name_version_unique_when_golang'
+  PACKAGE_TYPE_GOLANG = 8
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :packages_packages, [:project_id, :name, :version], unique: true, where: "package_type = #{PACKAGE_TYPE_GOLANG}", name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name(:packages_packages, INDEX_NAME)
+  end
+end