1 files changed, 57 insertions, 0 deletions
diff --git a/db/post_migrate/20231003083900_swap_columns_for_ci_pipeline_messages_pipeline_id_bigint.rb b/db/post_migrate/20231003083900_swap_columns_for_ci_pipeline_messages_pipeline_id_bigint.rb
new file mode 100644
index 00000000000..678ff479687
--- /dev/null
+++ b/db/post_migrate/20231003083900_swap_columns_for_ci_pipeline_messages_pipeline_id_bigint.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+class SwapColumnsForCiPipelineMessagesPipelineIdBigint < Gitlab::Database::Migration[2.1]
+  disable_ddl_transaction!
+
+  TABLE_NAME = :ci_pipeline_messages
+  TARGET_TABLE_NAME = :ci_pipelines
+  TRIGGER_FUNCTION_NAME = :trigger_bfad0e2b9c86
+  COLUMN_NAME = :pipeline_id
+  BIGINT_COLUMN_NAME = :pipeline_id_convert_to_bigint
+  FK_NAME = :fk_rails_8d3b04e3e1
+  BIGINT_FK_NAME = :fk_0946fea681
+  INDEX_NAME = :index_ci_pipeline_messages_on_pipeline_id
+  BIGINT_INDEX_NAME = :index_ci_pipeline_messages_on_pipeline_id_convert_to_bigint
+
+  def up
+    swap
+  end
+
+  def down
+    swap
+  end
+
+  private
+
+  def swap
+    with_lock_retries(raise_on_exhaustion: true) do
+      # Lock the tables involved.
+      execute "LOCK TABLE #{TARGET_TABLE_NAME}, #{TABLE_NAME} IN ACCESS EXCLUSIVE MODE"
+
+      # Rename the columns to swap names
+      temp_name = "temp_#{COLUMN_NAME}"
+      execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN #{COLUMN_NAME} TO #{temp_name}"
+      execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN #{BIGINT_COLUMN_NAME} TO #{COLUMN_NAME}"
+      execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN #{temp_name} TO #{BIGINT_COLUMN_NAME}"
+
+      # Reset the trigger function
+      execute "ALTER FUNCTION #{quote_column_name(TRIGGER_FUNCTION_NAME)} RESET ALL"
+
+      # Swap the defaults
+      change_column_default TABLE_NAME, COLUMN_NAME, nil
+      change_column_default TABLE_NAME, BIGINT_COLUMN_NAME, 0
+
+      # Swap fkey constraint
+      temp_fk_name = "temp_#{FK_NAME}"
+      execute "ALTER TABLE #{TABLE_NAME} RENAME CONSTRAINT #{FK_NAME} TO #{temp_fk_name}"
+      execute "ALTER TABLE #{TABLE_NAME} RENAME CONSTRAINT #{BIGINT_FK_NAME} TO #{FK_NAME}"
+      execute "ALTER TABLE #{TABLE_NAME} RENAME CONSTRAINT #{temp_fk_name} TO #{BIGINT_FK_NAME}"
+
+      # Swap index
+      temp_index_name = "temp_#{INDEX_NAME}"
+      execute "ALTER INDEX #{INDEX_NAME} RENAME TO #{temp_index_name}"
+      execute "ALTER INDEX #{BIGINT_INDEX_NAME} RENAME TO #{INDEX_NAME}"
+      execute "ALTER INDEX #{temp_index_name} RENAME TO #{BIGINT_INDEX_NAME}"
+    end
+  end
+end