gitlab-org--gitlab-foss/db/migrate/20180831164905_add_common_to_prometheus_metrics.rb

# frozen_string_literal: true

class AddCommonToPrometheusMetrics < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_column_with_default(:prometheus_metrics, :common, :boolean, default: false)
  end

  def down
    remove_column(:prometheus_metrics, :common)
  end
end
Add `# frozen_string_literal: true` 2018-09-04 05:42:58 -04:00			`# frozen_string_literal: true`

Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 02:27:31 -05:00			`class AddCommonToPrometheusMetrics < ActiveRecord::Migration[4.2]`
Import common metrics into database. This MR backports PrometheusMetric model to CE and adds: common, identifier to figure out what kind of metric is used. 2018-08-31 12:53:50 -04:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`disable_ddl_transaction!`

			`def up`
			`add_column_with_default(:prometheus_metrics, :common, :boolean, default: false)`
			`end`

			`def down`
			`remove_column(:prometheus_metrics, :common)`
			`end`
			`end`