tdown();
			}
		}
	}

	/**
	 * Sync Data Loss Handler
	 *
	 * @param Queue $queue Sync queue.
	 * @return boolean was send successful
	 */
	public function sync_data_loss( $queue ) {
		if ( ! Settings::is_sync_enabled() ) {
			return;
		}
		$updated = Health::update_status( Health::STATUS_OUT_OF_SYNC );

		if ( ! $updated ) {
			return;
		}

		$data = array(
			'timestamp'  => microtime( true ),
			'queue_size' => $queue->size(),
			'queue_lag'  => $queue->lag(),
		);

		$sender = Sender::get_instance();
		return $sender->send_action( 'jetpack_sync_data_loss', $data );
	}

	/**
	 * Get the event's actor.
	 *
	 * @param string $current_filter Current wp-admin page.
	 * @param object $args Sync event.
	 * @return array Actor information.
	 */
	public function get_actor( $current_filter, $args ) {
		if ( 'wp_login' === $current_filter ) {
			$user = get_user_by( 'ID', $args[1]->data->ID );
		} else {
			$user = wp_get_current_user();
		}

		$roles           = new Roles();
		$translated_role = $roles->translate_user_to_role( $user );

		$actor = array(
			'wpcom_user_id'    => null,
			'external_user_id' => isset( $user->ID ) ? $user->ID : null,
			'display_name'     => isset( $user->display_name ) ? $user->display_name : null,
			'user_email'       => isset( $user->user_email ) ? $user->user_email : null,
			'user_roles'       => isset( $user->roles ) ? $user->roles : null,
			'translated_role'  => $translated_role ? $translated_role : null,
			'is_cron'          => defined( 'DOING_CRON' ) ? DOING_CRON : false,
			'is_rest'          => defined( 'REST_API_REQUEST' ) ? REST_API_REQUEST : false,
			'is_xmlrpc'        => defined( 'XMLRPC_REQUEST' ) ? XMLRPC_REQUEST : false,
			'is_wp_rest'       => defined( 'REST_REQUEST' ) ? REST_REQUEST : false,
			'is_ajax'          => defined( 'DOING_AJAX' ) ? DOING_AJAX : false,
			'is_wp_admin'      => is_admin(),
			'is_cli'           => defined( 'WP_CLI' ) ? WP_CLI : false,
			'from_url'         => $this->get_request_url(),
		);

		if ( $this->should_send_user_data_with_actor( $current_filter ) ) {
			require_once JETPACK__PLUGIN_DIR . 'modules/protect/shared-functions.php';
			$actor['ip']         = jetpack_protect_get_ip();
			$actor['user_agent'] = isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : 'unknown';
		}

		return $actor;
	}

	/**
	 * Should user data be sent as the actor?
	 *
	 * @param string $current_filter The current WordPress filter being executed.
	 * @return bool
	 */
	public function should_send_user_data_with_actor( $current_filter ) {
		$should_send = in_array( $current_filter, array( 'jetpack_wp_login', 'wp_logout', 'jetpack_valid_failed_login_attempt' ), true );
		/**
		 * Allow or deny sending actor's user data ( IP and UA ) during a sync event
		 *
		 * @since 5.8.0
		 *
		 * @module sync
		 *
		 * @param bool True if we should send user data
		 * @param string The current filter that is performing the sync action
		 */
		return apply_filters( 'jetpack_sync_actor_user_data', $should_send, $current_filter );
	}

	/**
	 * Sets Listener defaults.
	 */
	public function set_defaults() {
		$this->sync_queue      = new Queue( 'sync' );
		$this->full_sync_queue = new Queue( 'full_sync' );
		$this->set_queue_size_limit( Settings::get_setting( 'max_queue_size' ) );
		$this->set_queue_lag_limit( Settings::get_setting( 'max_queue_lag' ) );
	}

	/**
	 * Get the request URL.
	 *
	 * @return string Request URL, if known. Otherwise, wp-admin or home_url.
	 */
	public function get_request_url() {
		if ( isset( $_SERVER['HTTP_HOST'], $_SERVER['REQUEST_URI'] ) ) {
			return 'http' . ( isset( $_SERVER['HTTPS'] ) ? 's' : '' ) . '://' . "{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}";
		}
		return is_admin() ? get_admin_url( get_current_blog_id() ) : home_url();
	}
}