206 lines
6.8 KiB
PHP
206 lines
6.8 KiB
PHP
<?php
|
|
|
|
if ( ! defined( 'ABSPATH' ) ) {
|
|
exit; // Exit if accessed directly
|
|
}
|
|
|
|
/**
|
|
* WC_Cache_Helper class.
|
|
*
|
|
* @class WC_Cache_Helper
|
|
* @version 2.2.0
|
|
* @package WooCommerce/Classes
|
|
* @category Class
|
|
* @author WooThemes
|
|
*/
|
|
class WC_Cache_Helper {
|
|
|
|
/**
|
|
* Hook in methods.
|
|
*/
|
|
public static function init() {
|
|
add_action( 'template_redirect', array( __CLASS__, 'geolocation_ajax_redirect' ) );
|
|
add_action( 'wp', array( __CLASS__, 'prevent_caching' ) );
|
|
add_action( 'admin_notices', array( __CLASS__, 'notices' ) );
|
|
add_action( 'delete_version_transients', array( __CLASS__, 'delete_version_transients' ) );
|
|
}
|
|
|
|
/**
|
|
* Get prefix for use with wp_cache_set. Allows all cache in a group to be invalidated at once.
|
|
* @param string $group
|
|
* @return string
|
|
*/
|
|
public static function get_cache_prefix( $group ) {
|
|
// Get cache key - uses cache key wc_orders_cache_prefix to invalidate when needed
|
|
$prefix = wp_cache_get( 'wc_' . $group . '_cache_prefix', $group );
|
|
|
|
if ( false === $prefix ) {
|
|
$prefix = 1;
|
|
wp_cache_set( 'wc_' . $group . '_cache_prefix', $prefix, $group );
|
|
}
|
|
|
|
return 'wc_cache_' . $prefix . '_';
|
|
}
|
|
|
|
/**
|
|
* Increment group cache prefix (invalidates cache).
|
|
* @param string $group
|
|
*/
|
|
public static function incr_cache_prefix( $group ) {
|
|
wp_cache_incr( 'wc_' . $group . '_cache_prefix', 1, $group );
|
|
}
|
|
|
|
/**
|
|
* Get a hash of the customer location.
|
|
* @return string
|
|
*/
|
|
public static function geolocation_ajax_get_location_hash() {
|
|
$customer = new WC_Customer( 0, true );
|
|
$location = array();
|
|
$location['country'] = $customer->get_billing_country();
|
|
$location['state'] = $customer->get_billing_state();
|
|
$location['postcode'] = $customer->get_billing_postcode();
|
|
$location['city'] = $customer->get_billing_city();
|
|
return substr( md5( implode( '', $location ) ), 0, 12 );
|
|
}
|
|
|
|
/**
|
|
* When using geolocation via ajax, to bust cache, redirect if the location hash does not equal the querystring.
|
|
*
|
|
* This prevents caching of the wrong data for this request.
|
|
*/
|
|
public static function geolocation_ajax_redirect() {
|
|
if ( 'geolocation_ajax' === get_option( 'woocommerce_default_customer_address' ) && ! is_checkout() && ! is_cart() && ! is_account_page() && ! is_ajax() && empty( $_POST ) ) {
|
|
$location_hash = self::geolocation_ajax_get_location_hash();
|
|
$current_hash = isset( $_GET['v'] ) ? wc_clean( $_GET['v'] ) : '';
|
|
if ( empty( $current_hash ) || $current_hash !== $location_hash ) {
|
|
global $wp;
|
|
|
|
$redirect_url = trailingslashit( home_url( $wp->request ) );
|
|
|
|
if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
|
|
$redirect_url = add_query_arg( $_SERVER['QUERY_STRING'], '', $redirect_url );
|
|
}
|
|
|
|
if ( ! get_option( 'permalink_structure' ) ) {
|
|
$redirect_url = add_query_arg( $wp->query_string, '', $redirect_url );
|
|
}
|
|
|
|
$redirect_url = add_query_arg( 'v', $location_hash, remove_query_arg( 'v', $redirect_url ) );
|
|
|
|
wp_safe_redirect( esc_url_raw( $redirect_url ), 307 );
|
|
exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get transient version.
|
|
*
|
|
* When using transients with unpredictable names, e.g. those containing an md5.
|
|
* hash in the name, we need a way to invalidate them all at once.
|
|
*
|
|
* When using default WP transients we're able to do this with a DB query to.
|
|
* delete transients manually.
|
|
*
|
|
* With external cache however, this isn't possible. Instead, this function is used.
|
|
* to append a unique string (based on time()) to each transient. When transients.
|
|
* are invalidated, the transient version will increment and data will be regenerated.
|
|
*
|
|
* Raised in issue https://github.com/woocommerce/woocommerce/issues/5777.
|
|
* Adapted from ideas in http://tollmanz.com/invalidation-schemes/.
|
|
*
|
|
* @param string $group Name for the group of transients we need to invalidate
|
|
* @param boolean $refresh true to force a new version
|
|
* @return string transient version based on time(), 10 digits
|
|
*/
|
|
public static function get_transient_version( $group, $refresh = false ) {
|
|
$transient_name = $group . '-transient-version';
|
|
$transient_value = get_transient( $transient_name );
|
|
|
|
if ( false === $transient_value || true === $refresh ) {
|
|
self::delete_version_transients( $transient_value );
|
|
set_transient( $transient_name, $transient_value = time() );
|
|
}
|
|
return $transient_value;
|
|
}
|
|
|
|
/**
|
|
* When the transient version increases, this is used to remove all past transients to avoid filling the DB.
|
|
*
|
|
* Note; this only works on transients appended with the transient version, and when object caching is not being used.
|
|
*
|
|
* @since 2.3.10
|
|
*
|
|
* @param string $version
|
|
*/
|
|
public static function delete_version_transients( $version = '' ) {
|
|
if ( ! wp_using_ext_object_cache() && ! empty( $version ) ) {
|
|
global $wpdb;
|
|
|
|
$limit = apply_filters( 'woocommerce_delete_version_transients_limit', 1000 );
|
|
$affected = $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s ORDER BY option_id LIMIT %d;", "\_transient\_%" . $version, $limit ) );
|
|
|
|
// If affected rows is equal to limit, there are more rows to delete. Delete in 10 secs.
|
|
if ( $affected === $limit ) {
|
|
wp_schedule_single_event( time() + 10, 'delete_version_transients', array( $version ) );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Prevent caching on dynamic pages.
|
|
*/
|
|
public static function prevent_caching() {
|
|
if ( ! is_blog_installed() ) {
|
|
return;
|
|
}
|
|
$page_ids = array_filter( array( wc_get_page_id( 'cart' ), wc_get_page_id( 'checkout' ), wc_get_page_id( 'myaccount' ) ) );
|
|
$current_page_id = get_queried_object_id();
|
|
|
|
if ( isset( $_GET['download_file'] ) || in_array( $current_page_id, $page_ids ) ) {
|
|
self::nocache();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set nocache constants and headers.
|
|
* @access private
|
|
*/
|
|
private static function nocache() {
|
|
if ( ! defined( 'DONOTCACHEPAGE' ) ) {
|
|
define( "DONOTCACHEPAGE", true );
|
|
}
|
|
if ( ! defined( 'DONOTCACHEOBJECT' ) ) {
|
|
define( "DONOTCACHEOBJECT", true );
|
|
}
|
|
if ( ! defined( 'DONOTCACHEDB' ) ) {
|
|
define( "DONOTCACHEDB", true );
|
|
}
|
|
nocache_headers();
|
|
}
|
|
|
|
/**
|
|
* notices function.
|
|
*/
|
|
public static function notices() {
|
|
if ( ! function_exists( 'w3tc_pgcache_flush' ) || ! function_exists( 'w3_instance' ) ) {
|
|
return;
|
|
}
|
|
|
|
$config = w3_instance( 'W3_Config' );
|
|
$enabled = $config->get_integer( 'dbcache.enabled' );
|
|
$settings = array_map( 'trim', $config->get_array( 'dbcache.reject.sql' ) );
|
|
|
|
if ( $enabled && ! in_array( '_wc_session_', $settings ) ) {
|
|
?>
|
|
<div class="error">
|
|
<p><?php printf( __( 'In order for <strong>database caching</strong> to work with WooCommerce you must add %1$s to the "Ignored Query Strings" option in <a href="%2$s">W3 Total Cache settings</a>.', 'woocommerce' ), '<code>_wc_session_</code>', admin_url( 'admin.php?page=w3tc_dbcache' ) ); ?></p>
|
|
</div>
|
|
<?php
|
|
}
|
|
}
|
|
}
|
|
|
|
WC_Cache_Helper::init();
|