1 files changed, 54 insertions, 0 deletions
diff --git a/db/post_migrate/20230712064655_replace_old_fk_p_ci_runner_machine_builds_to_builds_v2.rb b/db/post_migrate/20230712064655_replace_old_fk_p_ci_runner_machine_builds_to_builds_v2.rb
new file mode 100644
index 00000000000..8f1c1872e04
--- /dev/null
+++ b/db/post_migrate/20230712064655_replace_old_fk_p_ci_runner_machine_builds_to_builds_v2.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+class ReplaceOldFkPCiRunnerMachineBuildsToBuildsV2 < Gitlab::Database::Migration[2.1]
+  include Gitlab::Database::PartitioningMigrationHelpers
+  include Gitlab::Database::MigrationHelpers::WraparoundAutovacuum
+
+  disable_ddl_transaction!
+
+  def up
+    return unless should_run?
+    return if new_foreign_key_exists?
+
+    with_lock_retries do
+      remove_foreign_key_if_exists :p_ci_runner_machine_builds, :ci_builds,
+        name: :fk_bb490f12fe_p, reverse_lock_order: true
+
+      rename_constraint :p_ci_runner_machine_builds, :temp_fk_bb490f12fe_p, :fk_bb490f12fe_p
+
+      Gitlab::Database::PostgresPartitionedTable.each_partition(:p_ci_runner_machine_builds) do |partition|
+        rename_constraint partition.identifier, :temp_fk_bb490f12fe_p, :fk_bb490f12fe_p
+      end
+    end
+  end
+
+  def down
+    return unless should_run?
+    return unless new_foreign_key_exists?
+
+    add_concurrent_partitioned_foreign_key :p_ci_runner_machine_builds, :ci_builds,
+      name: :temp_fk_bb490f12fe_p,
+      column: [:partition_id, :build_id],
+      target_column: [:partition_id, :id],
+      on_update: :cascade,
+      on_delete: :cascade,
+      validate: true,
+      reverse_lock_order: true
+
+    switch_constraint_names :p_ci_runner_machine_builds, :fk_bb490f12fe_p, :temp_fk_bb490f12fe_p
+
+    Gitlab::Database::PostgresPartitionedTable.each_partition(:p_ci_runner_machine_builds) do |partition|
+      switch_constraint_names partition.identifier, :fk_bb490f12fe_p, :temp_fk_bb490f12fe_p
+    end
+  end
+
+  private
+
+  def should_run?
+    can_execute_on?(:ci_builds)
+  end
+
+  def new_foreign_key_exists?
+    foreign_key_exists?(:p_ci_runner_machine_builds, :p_ci_builds, name: :fk_bb490f12fe_p)
+  end
+end