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# frozen_string_literal: true
module Gitlab
module Database
module Migrations
module LockRetryMixin
module ActiveRecordMigrationProxyLockRetries
def migration_class
migration.class
end
def enable_lock_retries?
# regular AR migrations don't have this,
# only ones inheriting from Gitlab::Database::Migration have
return false unless migration.respond_to?(:enable_lock_retries?)
migration.enable_lock_retries?
end
end
module ActiveRecordMigratorLockRetries
# We patch the original method to start a transaction
# using the WithLockRetries methodology for the whole migration.
def ddl_transaction(migration, &block)
if use_transaction?(migration) && migration.enable_lock_retries?
Gitlab::Database::WithLockRetries.new(
klass: migration.migration_class,
logger: Gitlab::BackgroundMigration::Logger
).run(raise_on_exhaustion: false, &block)
else
super
end
end
end
def self.patch!
ActiveRecord::MigrationProxy.prepend(ActiveRecordMigrationProxyLockRetries)
ActiveRecord::Migrator.prepend(ActiveRecordMigratorLockRetries)
end
end
end
end
end
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