db/post_migrate/20230413041918_add_unique_index_system_note_metadata_note_id_convert_to_bigint_for_gitlab_com.rb


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# frozen_string_literal: true

class AddUniqueIndexSystemNoteMetadataNoteIdConvertToBigintForGitlabCom < Gitlab::Database::Migration[2.1]
  include Gitlab::Database::MigrationHelpers::ConvertToBigint

  disable_ddl_transaction!

  TABLE_NAME = :system_note_metadata
  INDEX_NAME = :index_system_note_metadata_on_note_id_convert_to_bigint

  def up
    return unless should_run?

    # This will replace the existing index_system_note_metadata_on_note_id
    add_concurrent_index TABLE_NAME, :note_id_convert_to_bigint, unique: true,
      name: 'index_system_note_metadata_on_note_id_convert_to_bigint'
  end

  def down
    return unless should_run?

    remove_concurrent_index_by_name(TABLE_NAME, INDEX_NAME)
  end

  private

  def should_run?
    com_or_dev_or_test_but_not_jh?
  end
end