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# frozen_string_literal: true
# rubocop:disable Metrics/LineLength
# rubocop:disable Style/Documentation
module Gitlab
module BackgroundMigration
class DeleteConflictingRedirectRoutesRange
class Route < ActiveRecord::Base
self.table_name = 'routes'
end
class RedirectRoute < ActiveRecord::Base
self.table_name = 'redirect_routes'
end
# start_id - The start ID of the range of events to process
# end_id - The end ID of the range to process.
def perform(start_id, end_id)
return unless migrate?
conflicts = RedirectRoute.where(routes_match_redirects_clause(start_id, end_id))
num_rows = conflicts.delete_all
Rails.logger.info("Gitlab::BackgroundMigration::DeleteConflictingRedirectRoutesRange [#{start_id}, #{end_id}] - Deleted #{num_rows} redirect routes that were conflicting with routes.")
end
def migrate?
Route.table_exists? && RedirectRoute.table_exists?
end
def routes_match_redirects_clause(start_id, end_id)
<<~ROUTES_MATCH_REDIRECTS
EXISTS (
SELECT 1 FROM routes
WHERE (
LOWER(redirect_routes.path) = LOWER(routes.path)
OR LOWER(redirect_routes.path) LIKE LOWER(CONCAT(routes.path, '/%'))
)
AND routes.id BETWEEN #{start_id} AND #{end_id}
)
ROUTES_MATCH_REDIRECTS
end
end
end
end
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