lib/gitlab/background_migration/destroy_invalid_project_members.rb


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# frozen_string_literal: true

module Gitlab
  module BackgroundMigration
    class DestroyInvalidProjectMembers < Gitlab::BackgroundMigration::BatchedMigrationJob # rubocop:disable Style/Documentation
      scope_to ->(relation) { relation.where(source_type: 'Project') }

      def perform
        each_sub_batch(operation_name: :delete_all) do |sub_batch|
          invalid_project_members = sub_batch
                                      .joins('LEFT OUTER JOIN projects ON members.source_id = projects.id')
                                      .where(projects: { id: nil })
          invalid_ids = invalid_project_members.pluck(:id)

          # the actual delete
          deleted_count = invalid_project_members.delete_all

          Gitlab::AppLogger.info({ message: 'Removing invalid project member records',
                                   deleted_count: deleted_count,
                                   ids: invalid_ids })
        end
      end
    end
  end
end