2993 lines
100 KiB
PHP
2993 lines
100 KiB
PHP
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<?php
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/**
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* Plugin Name: Redis Object Cache Drop-In
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* Plugin URI: https://wordpress.org/plugins/redis-cache/
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* Description: A persistent object cache backend powered by Redis. Supports Predis, PhpRedis, Relay, replication, sentinels, clustering and WP-CLI.
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* Version: 2.4.4
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* Author: Till Krüss
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* Author URI: https://objectcache.pro
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* License: GPLv3
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* License URI: http://www.gnu.org/licenses/gpl-3.0.html
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* Requires PHP: 7.2
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*
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* @package Rhubarb\RedisCache
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*/
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defined( '\\ABSPATH' ) || exit;
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// phpcs:disable Generic.WhiteSpace.ScopeIndent.IncorrectExact, Generic.WhiteSpace.ScopeIndent.Incorrect
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if ( ! defined( 'WP_REDIS_DISABLED' ) || ! WP_REDIS_DISABLED ) :
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/**
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* Determines whether the object cache implementation supports a particular feature.
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*
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* Possible values include:
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* - `add_multiple`, `set_multiple`, `get_multiple` and `delete_multiple`
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* - `flush_runtime` and `flush_group`
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*
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* @param string $feature Name of the feature to check for.
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* @return bool True if the feature is supported, false otherwise.
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*/
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function wp_cache_supports( $feature ) {
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switch ( $feature ) {
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case 'add_multiple':
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case 'set_multiple':
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case 'get_multiple':
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case 'delete_multiple':
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case 'flush_runtime':
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case 'flush_group':
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return true;
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default:
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return false;
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}
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}
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/**
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* Adds a value to cache.
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*
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* If the specified key already exists, the value is not stored and the function
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* returns false.
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*
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* @param string $key The key under which to store the value.
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* @param mixed $value The value to store.
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* @param string $group The group value appended to the $key.
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* @param int $expiration The expiration time, defaults to 0.
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*
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* @return bool Returns TRUE on success or FALSE on failure.
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*/
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function wp_cache_add( $key, $value, $group = '', $expiration = 0 ) {
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global $wp_object_cache;
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return $wp_object_cache->add( $key, $value, $group, $expiration );
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}
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/**
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* Adds multiple values to the cache in one call.
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*
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* @param array $data Array of keys and values to be set.
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* @param string $group Optional. Where the cache contents are grouped. Default empty.
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* @param int $expire Optional. When to expire the cache contents, in seconds.
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* Default 0 (no expiration).
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* @return bool[] Array of return values, grouped by key. Each value is either
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* true on success, or false if cache key and group already exist.
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*/
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function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) {
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global $wp_object_cache;
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return $wp_object_cache->add_multiple( $data, $group, $expire );
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}
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/**
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* Closes the cache.
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*
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* This function has ceased to do anything since WordPress 2.5. The
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* functionality was removed along with the rest of the persistent cache. This
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* does not mean that plugins can't implement this function when they need to
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* make sure that the cache is cleaned up after WordPress no longer needs it.
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*
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* @return bool Always returns True
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*/
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function wp_cache_close() {
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return true;
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}
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/**
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* Decrement a numeric item's value.
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*
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* @param string $key The key under which to store the value.
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* @param int $offset The amount by which to decrement the item's value.
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* @param string $group The group value appended to the $key.
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*
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* @return int|bool Returns item's new value on success or FALSE on failure.
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*/
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function wp_cache_decr( $key, $offset = 1, $group = '' ) {
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global $wp_object_cache;
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return $wp_object_cache->decrement( $key, $offset, $group );
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}
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/**
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* Remove the item from the cache.
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*
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* @param string $key The key under which to store the value.
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* @param string $group The group value appended to the $key.
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* @param int $time The amount of time the server will wait to delete the item in seconds.
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*
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* @return bool Returns TRUE on success or FALSE on failure.
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*/
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function wp_cache_delete( $key, $group = '', $time = 0 ) {
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global $wp_object_cache;
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return $wp_object_cache->delete( $key, $group, $time );
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}
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/**
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* Deletes multiple values from the cache in one call.
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*
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* @param array $keys Array of keys under which the cache to deleted.
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* @param string $group Optional. Where the cache contents are grouped. Default empty.
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* @return bool[] Array of return values, grouped by key. Each value is either
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* true on success, or false if the contents were not deleted.
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*/
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function wp_cache_delete_multiple( array $keys, $group = '' ) {
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global $wp_object_cache;
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return $wp_object_cache->delete_multiple( $keys, $group );
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}
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/**
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* Invalidate all items in the cache. If `WP_REDIS_SELECTIVE_FLUSH` is `true`,
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* only keys prefixed with the `WP_REDIS_PREFIX` are flushed.
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*
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* @return bool Returns TRUE on success or FALSE on failure.
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*/
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function wp_cache_flush() {
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global $wp_object_cache;
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return $wp_object_cache->flush();
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}
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/**
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* Removes all cache items in a group.
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*
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* @param string $group Name of group to remove from cache.
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* @return true Returns TRUE on success or FALSE on failure.
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*/
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function wp_cache_flush_group( $group )
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{
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global $wp_object_cache;
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return $wp_object_cache->flush_group( $group );
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}
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/**
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* Removes all cache items from the in-memory runtime cache.
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*
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* @return bool True on success, false on failure.
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*/
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function wp_cache_flush_runtime() {
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global $wp_object_cache;
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return $wp_object_cache->flush_runtime();
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}
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/**
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* Retrieve object from cache.
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*
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* Gets an object from cache based on $key and $group.
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*
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* @param string $key The key under which to store the value.
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* @param string $group The group value appended to the $key.
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* @param bool $force Optional. Whether to force an update of the local cache from the persistent
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* cache. Default false.
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* @param bool $found Optional. Whether the key was found in the cache. Disambiguates a return of false,
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* a storable value. Passed by reference. Default null.
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*
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* @return bool|mixed Cached object value.
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*/
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function wp_cache_get( $key, $group = '', $force = false, &$found = null ) {
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global $wp_object_cache;
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return $wp_object_cache->get( $key, $group, $force, $found );
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}
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/**
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* Retrieves multiple values from the cache in one call.
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*
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* @param array $keys Array of keys under which the cache contents are stored.
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* @param string $group Optional. Where the cache contents are grouped. Default empty.
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* @param bool $force Optional. Whether to force an update of the local cache
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* from the persistent cache. Default false.
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* @return array Array of values organized into groups.
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*/
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function wp_cache_get_multiple( $keys, $group = '', $force = false ) {
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global $wp_object_cache;
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return $wp_object_cache->get_multiple( $keys, $group, $force );
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}
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/**
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* Increment a numeric item's value.
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*
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* @param string $key The key under which to store the value.
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* @param int $offset The amount by which to increment the item's value.
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* @param string $group The group value appended to the $key.
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*
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* @return int|bool Returns item's new value on success or FALSE on failure.
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*/
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function wp_cache_incr( $key, $offset = 1, $group = '' ) {
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global $wp_object_cache;
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return $wp_object_cache->increment( $key, $offset, $group );
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}
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/**
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* Sets up Object Cache Global and assigns it.
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*
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* @return void
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*/
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function wp_cache_init() {
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global $wp_object_cache;
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if ( ! defined( 'WP_REDIS_PREFIX' ) && getenv( 'WP_REDIS_PREFIX' ) ) {
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define( 'WP_REDIS_PREFIX', getenv( 'WP_REDIS_PREFIX' ) );
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}
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if ( ! defined( 'WP_REDIS_SELECTIVE_FLUSH' ) && getenv( 'WP_REDIS_SELECTIVE_FLUSH' ) ) {
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define( 'WP_REDIS_SELECTIVE_FLUSH', (bool) getenv( 'WP_REDIS_SELECTIVE_FLUSH' ) );
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}
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// Backwards compatibility: map `WP_CACHE_KEY_SALT` constant to `WP_REDIS_PREFIX`.
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if ( defined( 'WP_CACHE_KEY_SALT' ) && ! defined( 'WP_REDIS_PREFIX' ) ) {
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define( 'WP_REDIS_PREFIX', WP_CACHE_KEY_SALT );
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}
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// Set unique prefix for sites hosted on Cloudways
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if ( ! defined( 'WP_REDIS_PREFIX' ) && isset( $_SERVER['cw_allowed_ip'] ) ) {
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define( 'WP_REDIS_PREFIX', getenv( 'HTTP_X_APP_USER' ) );
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}
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if ( ! ( $wp_object_cache instanceof WP_Object_Cache ) ) {
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$fail_gracefully = defined( 'WP_REDIS_GRACEFUL' ) && WP_REDIS_GRACEFUL;
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
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$wp_object_cache = new WP_Object_Cache( $fail_gracefully );
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}
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}
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/**
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* Replaces a value in cache.
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*
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* This method is similar to "add"; however, is does not successfully set a value if
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* the object's key is not already set in cache.
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*
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* @param string $key The key under which to store the value.
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* @param mixed $value The value to store.
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* @param string $group The group value appended to the $key.
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* @param int $expiration The expiration time, defaults to 0.
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*
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* @return bool Returns TRUE on success or FALSE on failure.
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*/
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function wp_cache_replace( $key, $value, $group = '', $expiration = 0 ) {
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global $wp_object_cache;
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return $wp_object_cache->replace( $key, $value, $group, $expiration );
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}
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/**
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* Sets a value in cache.
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*
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* The value is set whether or not this key already exists in Redis.
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*
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* @param string $key The key under which to store the value.
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* @param mixed $value The value to store.
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* @param string $group The group value appended to the $key.
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* @param int $expiration The expiration time, defaults to 0.
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*
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* @return bool Returns TRUE on success or FALSE on failure.
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*/
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function wp_cache_set( $key, $value, $group = '', $expiration = 0 ) {
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global $wp_object_cache;
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return $wp_object_cache->set( $key, $value, $group, $expiration );
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}
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/**
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* Sets multiple values to the cache in one call.
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*
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* @param array $data Array of keys and values to be set.
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* @param string $group Optional. Where the cache contents are grouped. Default empty.
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* @param int $expire Optional. When to expire the cache contents, in seconds.
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* Default 0 (no expiration).
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* @return bool[] Array of return values, grouped by key. Each value is either
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* true on success, or false on failure.
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*/
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function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) {
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global $wp_object_cache;
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return $wp_object_cache->set_multiple( $data, $group, $expire );
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}
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/**
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* Switch the internal blog id.
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*
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* This changes the blog id used to create keys in blog specific groups.
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*
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* @param int $_blog_id The blog ID.
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*
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* @return bool
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*/
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function wp_cache_switch_to_blog( $_blog_id ) {
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global $wp_object_cache;
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return $wp_object_cache->switch_to_blog( $_blog_id );
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}
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/**
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* Adds a group or set of groups to the list of Redis groups.
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*
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* @param string|array $groups A group or an array of groups to add.
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*
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* @return void
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*/
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function wp_cache_add_global_groups( $groups ) {
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global $wp_object_cache;
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$wp_object_cache->add_global_groups( $groups );
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}
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/**
|
||
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* Adds a group or set of groups to the list of non-Redis groups.
|
||
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*
|
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* @param string|array $groups A group or an array of groups to add.
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*
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* @return void
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*/
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function wp_cache_add_non_persistent_groups( $groups ) {
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global $wp_object_cache;
|
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$wp_object_cache->add_non_persistent_groups( $groups );
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}
|
||
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||
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/**
|
||
|
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* Object cache class definition
|
||
|
|
*/
|
||
|
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class WP_Object_Cache {
|
||
|
|
/**
|
||
|
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* The Redis client.
|
||
|
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*
|
||
|
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* @var mixed
|
||
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*/
|
||
|
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private $redis;
|
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|
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|
||
|
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/**
|
||
|
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* The Redis server version.
|
||
|
|
*
|
||
|
|
* @var null|string
|
||
|
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*/
|
||
|
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private $redis_version = null;
|
||
|
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|
||
|
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/**
|
||
|
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* Track if Redis is available.
|
||
|
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*
|
||
|
|
* @var bool
|
||
|
|
*/
|
||
|
|
private $redis_connected = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check to fail gracefully or throw an exception.
|
||
|
|
*
|
||
|
|
* @var bool
|
||
|
|
*/
|
||
|
|
private $fail_gracefully = true;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Holds the non-Redis objects.
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $cache = [];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Holds the diagnostics values.
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $diagnostics = null;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Holds the error messages.
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $errors = [];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* List of global groups.
|
||
|
|
*
|
||
|
|
* @var array<string>
|
||
|
|
*/
|
||
|
|
public $global_groups = [
|
||
|
|
'blog-details',
|
||
|
|
'blog-id-cache',
|
||
|
|
'blog-lookup',
|
||
|
|
'global-posts',
|
||
|
|
'networks',
|
||
|
|
'rss',
|
||
|
|
'sites',
|
||
|
|
'site-details',
|
||
|
|
'site-lookup',
|
||
|
|
'site-options',
|
||
|
|
'site-transient',
|
||
|
|
'users',
|
||
|
|
'useremail',
|
||
|
|
'userlogins',
|
||
|
|
'usermeta',
|
||
|
|
'user_meta',
|
||
|
|
'userslugs',
|
||
|
|
];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* List of groups that will not be flushed.
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $unflushable_groups = [];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* List of groups not saved to Redis.
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $ignored_groups = [
|
||
|
|
'counts',
|
||
|
|
'plugins',
|
||
|
|
'themes',
|
||
|
|
];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* List of groups and their types.
|
||
|
|
*
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $group_type = [];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prefix used for global groups.
|
||
|
|
*
|
||
|
|
* @var string
|
||
|
|
*/
|
||
|
|
public $global_prefix = '';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prefix used for non-global groups.
|
||
|
|
*
|
||
|
|
* @var int
|
||
|
|
*/
|
||
|
|
public $blog_prefix = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Track how many requests were found in cache.
|
||
|
|
*
|
||
|
|
* @var int
|
||
|
|
*/
|
||
|
|
public $cache_hits = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Track how may requests were not cached.
|
||
|
|
*
|
||
|
|
* @var int
|
||
|
|
*/
|
||
|
|
public $cache_misses = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The amount of Redis commands made.
|
||
|
|
*
|
||
|
|
* @var int
|
||
|
|
*/
|
||
|
|
public $cache_calls = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The amount of microseconds (μs) waited for Redis commands.
|
||
|
|
*
|
||
|
|
* @var float
|
||
|
|
*/
|
||
|
|
public $cache_time = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Instantiate the Redis class.
|
||
|
|
*
|
||
|
|
* @param bool $fail_gracefully Handles and logs errors if true throws exceptions otherwise.
|
||
|
|
*/
|
||
|
|
public function __construct( $fail_gracefully = false ) {
|
||
|
|
global $blog_id, $table_prefix;
|
||
|
|
|
||
|
|
$this->fail_gracefully = $fail_gracefully;
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_GLOBAL_GROUPS' ) && is_array( WP_REDIS_GLOBAL_GROUPS ) ) {
|
||
|
|
$this->global_groups = array_map( [ $this, 'sanitize_key_part' ], WP_REDIS_GLOBAL_GROUPS );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->global_groups[] = 'redis-cache';
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_IGNORED_GROUPS' ) && is_array( WP_REDIS_IGNORED_GROUPS ) ) {
|
||
|
|
$this->ignored_groups = array_map( [ $this, 'sanitize_key_part' ], WP_REDIS_IGNORED_GROUPS );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_UNFLUSHABLE_GROUPS' ) && is_array( WP_REDIS_UNFLUSHABLE_GROUPS ) ) {
|
||
|
|
$this->unflushable_groups = array_map( [ $this, 'sanitize_key_part' ], WP_REDIS_UNFLUSHABLE_GROUPS );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->cache_group_types();
|
||
|
|
|
||
|
|
if ( function_exists( '_doing_it_wrong' ) ) {
|
||
|
|
if ( defined( 'WP_REDIS_TRACE' ) && WP_REDIS_TRACE ) {
|
||
|
|
_doing_it_wrong( __FUNCTION__ , 'Tracing feature was removed.' , '2.1.2' );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$client = $this->determine_client();
|
||
|
|
$parameters = $this->build_parameters();
|
||
|
|
|
||
|
|
try {
|
||
|
|
switch ( $client ) {
|
||
|
|
case 'hhvm':
|
||
|
|
$this->connect_using_hhvm( $parameters );
|
||
|
|
break;
|
||
|
|
case 'phpredis':
|
||
|
|
$this->connect_using_phpredis( $parameters );
|
||
|
|
break;
|
||
|
|
case 'relay':
|
||
|
|
$this->connect_using_relay( $parameters );
|
||
|
|
break;
|
||
|
|
case 'credis':
|
||
|
|
$this->connect_using_credis( $parameters );
|
||
|
|
break;
|
||
|
|
case 'predis':
|
||
|
|
default:
|
||
|
|
$this->connect_using_predis( $parameters );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
$connectionId = is_string( WP_REDIS_CLUSTER )
|
||
|
|
? WP_REDIS_CLUSTER
|
||
|
|
: current( $this->build_cluster_connection_array() );
|
||
|
|
|
||
|
|
$this->diagnostics[ 'ping' ] = $client === 'predis'
|
||
|
|
? $this->redis->getClientBy( 'id', $connectionId )->ping()
|
||
|
|
: $this->redis->ping( $connectionId );
|
||
|
|
} else {
|
||
|
|
$this->diagnostics[ 'ping' ] = $this->redis->ping();
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->fetch_info();
|
||
|
|
|
||
|
|
$this->redis_connected = true;
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Assign global and blog prefixes for use with keys.
|
||
|
|
if ( function_exists( 'is_multisite' ) ) {
|
||
|
|
$this->global_prefix = is_multisite() ? '' : $table_prefix;
|
||
|
|
$this->blog_prefix = is_multisite() ? $blog_id : $table_prefix;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set group type array
|
||
|
|
*
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function cache_group_types() {
|
||
|
|
foreach ( $this->global_groups as $group ) {
|
||
|
|
$this->group_type[ $group ] = 'global';
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $this->unflushable_groups as $group ) {
|
||
|
|
$this->group_type[ $group ] = 'unflushable';
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $this->ignored_groups as $group ) {
|
||
|
|
$this->group_type[ $group ] = 'ignored';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine the Redis client.
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function determine_client() {
|
||
|
|
$client = 'predis';
|
||
|
|
|
||
|
|
if ( class_exists( 'Redis' ) ) {
|
||
|
|
$client = defined( 'HHVM_VERSION' ) ? 'hhvm' : 'phpredis';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_CLIENT' ) ) {
|
||
|
|
$client = (string) WP_REDIS_CLIENT;
|
||
|
|
$client = str_replace( 'pecl', 'phpredis', $client );
|
||
|
|
}
|
||
|
|
|
||
|
|
return trim( strtolower( $client ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Build the connection parameters from config constants.
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected function build_parameters() {
|
||
|
|
$parameters = [
|
||
|
|
'scheme' => 'tcp',
|
||
|
|
'host' => '127.0.0.1',
|
||
|
|
'port' => 6379,
|
||
|
|
'database' => 0,
|
||
|
|
'timeout' => 1,
|
||
|
|
'read_timeout' => 1,
|
||
|
|
'retry_interval' => null,
|
||
|
|
'persistent' => false,
|
||
|
|
];
|
||
|
|
|
||
|
|
$settings = [
|
||
|
|
'scheme',
|
||
|
|
'host',
|
||
|
|
'port',
|
||
|
|
'path',
|
||
|
|
'password',
|
||
|
|
'database',
|
||
|
|
'timeout',
|
||
|
|
'read_timeout',
|
||
|
|
'retry_interval',
|
||
|
|
];
|
||
|
|
|
||
|
|
foreach ( $settings as $setting ) {
|
||
|
|
$constant = sprintf( 'WP_REDIS_%s', strtoupper( $setting ) );
|
||
|
|
|
||
|
|
if ( defined( $constant ) ) {
|
||
|
|
$parameters[ $setting ] = constant( $constant );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters[ 'password' ] ) && $parameters[ 'password' ] === '' ) {
|
||
|
|
unset( $parameters[ 'password' ] );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $parameters;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Connect to Redis using the PhpRedis (PECL) extension.
|
||
|
|
*
|
||
|
|
* @param array $parameters Connection parameters built by the `build_parameters` method.
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function connect_using_phpredis( $parameters ) {
|
||
|
|
$version = phpversion( 'redis' );
|
||
|
|
|
||
|
|
$this->diagnostics[ 'client' ] = sprintf( 'PhpRedis (v%s)', $version );
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SHARDS' ) ) {
|
||
|
|
$this->redis = new RedisArray( array_values( WP_REDIS_SHARDS ) );
|
||
|
|
|
||
|
|
$this->diagnostics[ 'shards' ] = WP_REDIS_SHARDS;
|
||
|
|
} elseif ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
if ( is_string( WP_REDIS_CLUSTER ) ) {
|
||
|
|
$this->redis = new RedisCluster( WP_REDIS_CLUSTER );
|
||
|
|
} else {
|
||
|
|
$args = [
|
||
|
|
'cluster' => $this->build_cluster_connection_array(),
|
||
|
|
'timeout' => $parameters['timeout'],
|
||
|
|
'read_timeout' => $parameters['read_timeout'],
|
||
|
|
'persistent' => $parameters['persistent'],
|
||
|
|
];
|
||
|
|
|
||
|
|
if ( isset( $parameters['password'] ) && version_compare( $version, '4.3.0', '>=' ) ) {
|
||
|
|
$args['password'] = $parameters['password'];
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->redis = new RedisCluster( null, ...array_values( $args ) );
|
||
|
|
$this->diagnostics += $args;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$this->redis = new Redis();
|
||
|
|
|
||
|
|
$args = [
|
||
|
|
'host' => $parameters['host'],
|
||
|
|
'port' => $parameters['port'],
|
||
|
|
'timeout' => $parameters['timeout'],
|
||
|
|
'',
|
||
|
|
'retry_interval' => (int) $parameters['retry_interval'],
|
||
|
|
];
|
||
|
|
|
||
|
|
if ( version_compare( $version, '3.1.3', '>=' ) ) {
|
||
|
|
$args['read_timeout'] = $parameters['read_timeout'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( strcasecmp( 'tls', $parameters['scheme'] ) === 0 ) {
|
||
|
|
$args['host'] = sprintf(
|
||
|
|
'%s://%s',
|
||
|
|
$parameters['scheme'],
|
||
|
|
str_replace( 'tls://', '', $parameters['host'] )
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( version_compare( $version, '5.3.0', '>=' ) && defined( 'WP_REDIS_SSL_CONTEXT' ) && ! empty( WP_REDIS_SSL_CONTEXT ) ) {
|
||
|
|
$args['others']['stream'] = WP_REDIS_SSL_CONTEXT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( strcasecmp( 'unix', $parameters['scheme'] ) === 0 ) {
|
||
|
|
$args['host'] = $parameters['path'];
|
||
|
|
$args['port'] = -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
call_user_func_array( [ $this->redis, 'connect' ], array_values( $args ) );
|
||
|
|
|
||
|
|
if ( isset( $parameters['password'] ) ) {
|
||
|
|
$args['password'] = $parameters['password'];
|
||
|
|
$this->redis->auth( $parameters['password'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['database'] ) ) {
|
||
|
|
if ( ctype_digit( (string) $parameters['database'] ) ) {
|
||
|
|
$parameters['database'] = (int) $parameters['database'];
|
||
|
|
}
|
||
|
|
|
||
|
|
$args['database'] = $parameters['database'];
|
||
|
|
|
||
|
|
if ( $parameters['database'] ) {
|
||
|
|
$this->redis->select( $parameters['database'] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->diagnostics += $args;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SERIALIZER' ) && ! empty( WP_REDIS_SERIALIZER ) ) {
|
||
|
|
$this->redis->setOption( Redis::OPT_SERIALIZER, WP_REDIS_SERIALIZER );
|
||
|
|
|
||
|
|
if ( function_exists( '_doing_it_wrong' ) ) {
|
||
|
|
_doing_it_wrong( __FUNCTION__ , 'The `WP_REDIS_SERIALIZER` configuration constant has been deprecated, use `WP_REDIS_IGBINARY` instead.', '2.3.1' );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Connect to Redis using the Relay extension.
|
||
|
|
*
|
||
|
|
* @param array $parameters Connection parameters built by the `build_parameters` method.
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function connect_using_relay( $parameters ) {
|
||
|
|
$version = phpversion( 'relay' );
|
||
|
|
|
||
|
|
$this->diagnostics[ 'client' ] = sprintf( 'Relay (v%s)', $version );
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SHARDS' ) ) {
|
||
|
|
throw new Exception('Relay does not support sharding.');
|
||
|
|
} elseif ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
throw new Exception('Relay does not cluster connections.');
|
||
|
|
} else {
|
||
|
|
$this->redis = new Relay\Relay;
|
||
|
|
|
||
|
|
$args = [
|
||
|
|
'host' => $parameters['host'],
|
||
|
|
'port' => $parameters['port'],
|
||
|
|
'timeout' => $parameters['timeout'],
|
||
|
|
'',
|
||
|
|
'retry_interval' => (int) $parameters['retry_interval'],
|
||
|
|
];
|
||
|
|
|
||
|
|
$args['read_timeout'] = $parameters['read_timeout'];
|
||
|
|
|
||
|
|
if ( strcasecmp( 'tls', $parameters['scheme'] ) === 0 ) {
|
||
|
|
$args['host'] = sprintf(
|
||
|
|
'%s://%s',
|
||
|
|
$parameters['scheme'],
|
||
|
|
str_replace( 'tls://', '', $parameters['host'] )
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SSL_CONTEXT' ) && ! empty( WP_REDIS_SSL_CONTEXT ) ) {
|
||
|
|
$args['others']['stream'] = WP_REDIS_SSL_CONTEXT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( strcasecmp( 'unix', $parameters['scheme'] ) === 0 ) {
|
||
|
|
$args['host'] = $parameters['path'];
|
||
|
|
$args['port'] = -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
call_user_func_array( [ $this->redis, 'connect' ], array_values( $args ) );
|
||
|
|
|
||
|
|
if ( isset( $parameters['password'] ) ) {
|
||
|
|
$args['password'] = $parameters['password'];
|
||
|
|
$this->redis->auth( $parameters['password'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['database'] ) ) {
|
||
|
|
if ( ctype_digit( (string) $parameters['database'] ) ) {
|
||
|
|
$parameters['database'] = (int) $parameters['database'];
|
||
|
|
}
|
||
|
|
|
||
|
|
$args['database'] = $parameters['database'];
|
||
|
|
|
||
|
|
if ( $parameters['database'] ) {
|
||
|
|
$this->redis->select( $parameters['database'] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->diagnostics += $args;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SERIALIZER' ) && ! empty( WP_REDIS_SERIALIZER ) ) {
|
||
|
|
$this->redis->setOption( Relay\Relay::OPT_SERIALIZER, WP_REDIS_SERIALIZER );
|
||
|
|
|
||
|
|
if ( function_exists( '_doing_it_wrong' ) ) {
|
||
|
|
_doing_it_wrong( __FUNCTION__ , 'The `WP_REDIS_SERIALIZER` configuration constant has been deprecated, use `WP_REDIS_IGBINARY` instead.', '2.3.1' );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Connect to Redis using the Predis library.
|
||
|
|
*
|
||
|
|
* @param array $parameters Connection parameters built by the `build_parameters` method.
|
||
|
|
* @throws \Exception If the Predis library was not found or is unreadable.
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function connect_using_predis( $parameters ) {
|
||
|
|
$client = 'Predis';
|
||
|
|
|
||
|
|
// Load bundled Predis library.
|
||
|
|
if ( ! class_exists( 'Predis\Client' ) ) {
|
||
|
|
$predis = '/dependencies/predis/predis/autoload.php';
|
||
|
|
|
||
|
|
$pluginDir = defined( 'WP_PLUGIN_DIR' ) ? WP_PLUGIN_DIR . '/redis-cache' : null;
|
||
|
|
$contentDir = defined( 'WP_CONTENT_DIR' ) ? WP_CONTENT_DIR . '/plugins/redis-cache' : null;
|
||
|
|
$pluginPath = defined( 'WP_REDIS_PLUGIN_PATH' ) ? WP_REDIS_PLUGIN_PATH : null;
|
||
|
|
|
||
|
|
if ( $pluginDir && is_readable( $pluginDir . $predis ) ) {
|
||
|
|
require_once $pluginDir . $predis;
|
||
|
|
} elseif ( $contentDir && is_readable( $contentDir . $predis ) ) {
|
||
|
|
require_once $contentDir . $predis;
|
||
|
|
} elseif ( $pluginPath && is_readable( $pluginPath . $predis ) ) {
|
||
|
|
require_once $pluginPath . $predis;
|
||
|
|
} else {
|
||
|
|
throw new Exception(
|
||
|
|
'Predis library not found. Re-install Redis Cache plugin or delete the object-cache.php.'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$servers = false;
|
||
|
|
$options = [];
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SHARDS' ) ) {
|
||
|
|
$servers = WP_REDIS_SHARDS;
|
||
|
|
$parameters['shards'] = $servers;
|
||
|
|
} elseif ( defined( 'WP_REDIS_SENTINEL' ) ) {
|
||
|
|
$servers = WP_REDIS_SERVERS;
|
||
|
|
$parameters['servers'] = $servers;
|
||
|
|
$options['replication'] = 'sentinel';
|
||
|
|
$options['service'] = WP_REDIS_SENTINEL;
|
||
|
|
} elseif ( defined( 'WP_REDIS_SERVERS' ) ) {
|
||
|
|
$servers = WP_REDIS_SERVERS;
|
||
|
|
$parameters['servers'] = $servers;
|
||
|
|
$options['replication'] = 'predis';
|
||
|
|
} elseif ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
$servers = $this->build_cluster_connection_array();
|
||
|
|
$parameters['cluster'] = $servers;
|
||
|
|
$options['cluster'] = 'redis';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( strcasecmp( 'unix', $parameters['scheme'] ) === 0 ) {
|
||
|
|
unset($parameters['host'], $parameters['port']);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['read_timeout'] ) && $parameters['read_timeout'] ) {
|
||
|
|
$parameters['read_write_timeout'] = $parameters['read_timeout'];
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( [ 'WP_REDIS_SERVERS', 'WP_REDIS_SHARDS', 'WP_REDIS_CLUSTER' ] as $constant ) {
|
||
|
|
if ( defined( $constant ) ) {
|
||
|
|
if ( $parameters['database'] ) {
|
||
|
|
$options['parameters']['database'] = $parameters['database'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['password'] ) ) {
|
||
|
|
if ( is_array( $parameters['password'] ) ) {
|
||
|
|
$options['parameters']['username'] = WP_REDIS_PASSWORD[0];
|
||
|
|
$options['parameters']['password'] = WP_REDIS_PASSWORD[1];
|
||
|
|
} else {
|
||
|
|
$options['parameters']['password'] = WP_REDIS_PASSWORD;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['password'] ) ) {
|
||
|
|
if ( is_array( $parameters['password'] ) ) {
|
||
|
|
$parameters['username'] = array_shift( $parameters['password'] );
|
||
|
|
$parameters['password'] = implode( '', $parameters['password'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_USERNAME' ) ) {
|
||
|
|
$parameters['username'] = WP_REDIS_USERNAME;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SSL_CONTEXT' ) && ! empty( WP_REDIS_SSL_CONTEXT ) ) {
|
||
|
|
$parameters['ssl'] = WP_REDIS_SSL_CONTEXT;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->redis = new Predis\Client( $servers ?: $parameters, $options );
|
||
|
|
$this->redis->connect();
|
||
|
|
|
||
|
|
$this->diagnostics = array_merge(
|
||
|
|
[ 'client' => sprintf( '%s (v%s)', $client, Predis\Client::VERSION ) ],
|
||
|
|
$parameters,
|
||
|
|
$options
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Connect to Redis using the Credis library.
|
||
|
|
*
|
||
|
|
* @param array $parameters Connection parameters built by the `build_parameters` method.
|
||
|
|
* @throws \Exception If the Credis library was not found or is unreadable.
|
||
|
|
* @throws \Exception If redis sharding should be configured as Credis does not support sharding.
|
||
|
|
* @throws \Exception If more than one seninel is configured as Credis does not support multiple sentinel servers.
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function connect_using_credis( $parameters ) {
|
||
|
|
_doing_it_wrong( __FUNCTION__ , 'Credis support will be removed in future versions.' , '2.0.26' );
|
||
|
|
|
||
|
|
$client = 'Credis';
|
||
|
|
|
||
|
|
$creds_path = sprintf(
|
||
|
|
'%s/redis-cache/dependencies/colinmollenhour/credis/',
|
||
|
|
defined( 'WP_PLUGIN_DIR' ) ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins'
|
||
|
|
);
|
||
|
|
|
||
|
|
$to_load = [];
|
||
|
|
|
||
|
|
if ( ! class_exists( 'Credis_Client' ) ) {
|
||
|
|
$to_load[] = 'Client.php';
|
||
|
|
}
|
||
|
|
|
||
|
|
$has_shards = defined( 'WP_REDIS_SHARDS' );
|
||
|
|
$has_sentinel = defined( 'WP_REDIS_SENTINEL' );
|
||
|
|
$has_servers = defined( 'WP_REDIS_SERVERS' );
|
||
|
|
$has_cluster = defined( 'WP_REDIS_CLUSTER' );
|
||
|
|
|
||
|
|
if ( ( $has_shards || $has_sentinel || $has_servers || $has_cluster ) && ! class_exists( 'Credis_Cluster' ) ) {
|
||
|
|
$to_load[] = 'Cluster.php';
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SENTINEL' ) && ! class_exists( 'Credis_Sentinel' ) ) {
|
||
|
|
$to_load[] = 'Sentinel.php';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $to_load as $sub_path ) {
|
||
|
|
$path = $creds_path . $sub_path;
|
||
|
|
|
||
|
|
if ( file_exists( $path ) ) {
|
||
|
|
require_once $path;
|
||
|
|
} else {
|
||
|
|
throw new Exception(
|
||
|
|
'Credis library not found. Re-install Redis Cache plugin or delete object-cache.php.'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SHARDS' ) ) {
|
||
|
|
throw new Exception(
|
||
|
|
'Sharding not supported by bundled Credis library. Please review your Redis Cache configuration.'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SENTINEL' ) ) {
|
||
|
|
if ( is_array( WP_REDIS_SERVERS ) && count( WP_REDIS_SERVERS ) > 1 ) {
|
||
|
|
throw new Exception(
|
||
|
|
'Multipe sentinel servers are not supported by the bundled Credis library. Please review your Redis Cache configuration.'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
$connection_string = array_values( WP_REDIS_SERVERS )[0];
|
||
|
|
$sentinel = new Credis_Sentinel( new Credis_Client( $connection_string ) );
|
||
|
|
$this->redis = $sentinel->getCluster( WP_REDIS_SENTINEL );
|
||
|
|
$args['servers'] = WP_REDIS_SERVERS;
|
||
|
|
} elseif ( defined( 'WP_REDIS_CLUSTER' ) || defined( 'WP_REDIS_SERVERS' ) ) {
|
||
|
|
$parameters['db'] = $parameters['database'];
|
||
|
|
|
||
|
|
$is_cluster = defined( 'WP_REDIS_CLUSTER' );
|
||
|
|
$clients = $is_cluster ? WP_REDIS_CLUSTER : WP_REDIS_SERVERS;
|
||
|
|
|
||
|
|
foreach ( $clients as $index => $connection_string ) {
|
||
|
|
// phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url
|
||
|
|
$url_components = parse_url( $connection_string );
|
||
|
|
|
||
|
|
if ( isset( $url_components['query'] ) ) {
|
||
|
|
parse_str( $url_components['query'], $add_params );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! $is_cluster && isset( $add_params['alias'] ) ) {
|
||
|
|
$add_params['master'] = 'master' === $add_params['alias'];
|
||
|
|
}
|
||
|
|
|
||
|
|
$add_params['host'] = $url_components['host'];
|
||
|
|
$add_params['port'] = $url_components['port'];
|
||
|
|
|
||
|
|
if ( ! isset( $add_params['alias'] ) ) {
|
||
|
|
$add_params['alias'] = "redis-$index";
|
||
|
|
}
|
||
|
|
|
||
|
|
$clients[ $index ] = array_merge( $parameters, $add_params );
|
||
|
|
|
||
|
|
unset($add_params);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->redis = new Credis_Cluster( $clients );
|
||
|
|
|
||
|
|
foreach ( $clients as $index => $_client ) {
|
||
|
|
$connection_string = "{$_client['scheme']}://{$_client['host']}:{$_client['port']}";
|
||
|
|
unset( $_client['scheme'], $_client['host'], $_client['port'] );
|
||
|
|
|
||
|
|
$params = array_filter( $_client );
|
||
|
|
|
||
|
|
if ( $params ) {
|
||
|
|
$connection_string .= '?' . http_build_query( $params, '', '&' );
|
||
|
|
}
|
||
|
|
|
||
|
|
$clients[ $index ] = $connection_string;
|
||
|
|
}
|
||
|
|
|
||
|
|
$args['servers'] = $clients;
|
||
|
|
} else {
|
||
|
|
$args = [
|
||
|
|
'host' => $parameters['scheme'] === 'unix' ? $parameters['path'] : $parameters['host'],
|
||
|
|
'port' => $parameters['port'],
|
||
|
|
'timeout' => $parameters['timeout'],
|
||
|
|
'persistent' => '',
|
||
|
|
'database' => $parameters['database'],
|
||
|
|
'password' => isset( $parameters['password'] ) ? $parameters['password'] : null,
|
||
|
|
];
|
||
|
|
|
||
|
|
$this->redis = new Credis_Client( ...array_values( $args ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Don't use PhpRedis if it is available.
|
||
|
|
$this->redis->forceStandalone();
|
||
|
|
|
||
|
|
$this->redis->connect();
|
||
|
|
|
||
|
|
if ( $parameters['read_timeout'] ) {
|
||
|
|
$args['read_timeout'] = $parameters['read_timeout'];
|
||
|
|
$this->redis->setReadTimeout( $parameters['read_timeout'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->diagnostics = array_merge(
|
||
|
|
[ 'client' => sprintf( '%s (v%s)', $client, Credis_Client::VERSION ) ],
|
||
|
|
$args
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Connect to Redis using HHVM's Redis extension.
|
||
|
|
*
|
||
|
|
* @param array $parameters Connection parameters built by the `build_parameters` method.
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function connect_using_hhvm( $parameters ) {
|
||
|
|
_doing_it_wrong( __FUNCTION__ , 'HHVM support will be removed in future versions.' , '2.0.26' );
|
||
|
|
|
||
|
|
$this->redis = new Redis();
|
||
|
|
|
||
|
|
// Adjust host and port if the scheme is `unix`.
|
||
|
|
if ( strcasecmp( 'unix', $parameters['scheme'] ) === 0 ) {
|
||
|
|
$parameters['host'] = 'unix://' . $parameters['path'];
|
||
|
|
$parameters['port'] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->redis->connect(
|
||
|
|
$parameters['host'],
|
||
|
|
$parameters['port'],
|
||
|
|
$parameters['timeout'],
|
||
|
|
null,
|
||
|
|
$parameters['retry_interval']
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( $parameters['read_timeout'] ) {
|
||
|
|
$this->redis->setOption( Redis::OPT_READ_TIMEOUT, $parameters['read_timeout'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['password'] ) ) {
|
||
|
|
$this->redis->auth( $parameters['password'] );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $parameters['database'] ) ) {
|
||
|
|
if ( ctype_digit( (string) $parameters['database'] ) ) {
|
||
|
|
$parameters['database'] = (int) $parameters['database'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $parameters['database'] ) {
|
||
|
|
$this->redis->select( $parameters['database'] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->diagnostics = array_merge(
|
||
|
|
[ 'client' => sprintf( 'HHVM Extension (v%s)', HHVM_VERSION ) ],
|
||
|
|
$parameters
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fetches Redis `INFO` mostly for server version.
|
||
|
|
*
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
public function fetch_info() {
|
||
|
|
$options = method_exists( $this->redis, 'getOptions' )
|
||
|
|
? $this->redis->getOptions()
|
||
|
|
: new stdClass();
|
||
|
|
|
||
|
|
if ( isset( $options->replication ) && $options->replication ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
$connectionId = is_string( WP_REDIS_CLUSTER )
|
||
|
|
? 'SERVER'
|
||
|
|
: current( $this->build_cluster_connection_array() );
|
||
|
|
|
||
|
|
$info = $this->determine_client() === 'predis'
|
||
|
|
? $this->redis->getClientBy( 'id', $connectionId )->info()
|
||
|
|
: $this->redis->info( $connectionId );
|
||
|
|
} else {
|
||
|
|
$info = $this->redis->info();
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( isset( $info['redis_version'] ) ) {
|
||
|
|
$this->redis_version = $info['redis_version'];
|
||
|
|
} elseif ( isset( $info['Server']['redis_version'] ) ) {
|
||
|
|
$this->redis_version = $info['Server']['redis_version'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Is Redis available?
|
||
|
|
*
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function redis_status() {
|
||
|
|
return (bool) $this->redis_connected;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the Redis instance.
|
||
|
|
*
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
public function redis_instance() {
|
||
|
|
return $this->redis;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the Redis server version.
|
||
|
|
*
|
||
|
|
* @return null|string
|
||
|
|
*/
|
||
|
|
public function redis_version() {
|
||
|
|
return $this->redis_version;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds a value to cache.
|
||
|
|
*
|
||
|
|
* If the specified key already exists, the value is not stored and the function
|
||
|
|
* returns false.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value.
|
||
|
|
* @param mixed $value The value to store.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param int $expiration The expiration time, defaults to 0.
|
||
|
|
* @return bool Returns TRUE on success or FALSE on failure.
|
||
|
|
*/
|
||
|
|
public function add( $key, $value, $group = 'default', $expiration = 0 ) {
|
||
|
|
return $this->add_or_replace( true, $key, $value, $group, $expiration );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds multiple values to the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $data Array of keys and values to be added.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped.
|
||
|
|
* @param int $expire Optional. When to expire the cache contents, in seconds.
|
||
|
|
* Default 0 (no expiration).
|
||
|
|
* @return bool[] Array of return values, grouped by key. Each value is either
|
||
|
|
* true on success, or false if cache key and group already exist.
|
||
|
|
*/
|
||
|
|
public function add_multiple( array $data, $group = 'default', $expire = 0 ) {
|
||
|
|
if ( function_exists( 'wp_suspend_cache_addition' ) && wp_suspend_cache_addition() ) {
|
||
|
|
return array_combine( array_keys( $data ), array_fill( 0, count( $data ), false ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
if (
|
||
|
|
$this->redis_status() &&
|
||
|
|
method_exists( $this->redis, 'pipeline' ) &&
|
||
|
|
! $this->is_ignored_group( $group )
|
||
|
|
) {
|
||
|
|
return $this->add_multiple_at_once( $data, $group, $expire );
|
||
|
|
}
|
||
|
|
|
||
|
|
$values = [];
|
||
|
|
|
||
|
|
foreach ( $data as $key => $value ) {
|
||
|
|
$values[ $key ] = $this->add( $key, $value, $group, $expire );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $values;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds multiple values to the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $data Array of keys and values to be added.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped.
|
||
|
|
* @param int $expire Optional. When to expire the cache contents, in seconds.
|
||
|
|
* Default 0 (no expiration).
|
||
|
|
* @return bool[] Array of return values, grouped by key. Each value is either
|
||
|
|
* true on success, or false if cache key and group already exist.
|
||
|
|
*/
|
||
|
|
protected function add_multiple_at_once( array $data, $group = 'default', $expire = 0 )
|
||
|
|
{
|
||
|
|
$keys = array_keys( $data );
|
||
|
|
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
$tx = $this->redis->pipeline();
|
||
|
|
|
||
|
|
$orig_exp = $expire;
|
||
|
|
$expire = $this->validate_expiration( $expire );
|
||
|
|
$derived_keys = [];
|
||
|
|
|
||
|
|
foreach ( $data as $key => $value ) {
|
||
|
|
/**
|
||
|
|
* Filters the cache expiration time
|
||
|
|
*
|
||
|
|
* @param int $expiration The time in seconds the entry expires. 0 for no expiry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The cache group.
|
||
|
|
* @param mixed $orig_exp The original expiration value before validation.
|
||
|
|
*/
|
||
|
|
$expire = apply_filters( 'redis_cache_expiration', $expire, $key, $group, $orig_exp );
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$derived_key = $derived_keys[ $key ] = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
$args = [ $derived_key, $this->maybe_serialize( $value ) ];
|
||
|
|
|
||
|
|
if ( $this->is_predis() ) {
|
||
|
|
$args[] = 'nx';
|
||
|
|
|
||
|
|
if ( $expire ) {
|
||
|
|
$args[] = 'ex';
|
||
|
|
$args[] = $expire;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ( $expire ) {
|
||
|
|
$args[] = [ 'nx', 'ex' => $expire ];
|
||
|
|
} else {
|
||
|
|
$args[] = [ 'nx' ];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$tx->set( ...$args );
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
$method = $this->is_predis() ? 'execute' : 'exec';
|
||
|
|
|
||
|
|
$results = array_map( function ( $response ) {
|
||
|
|
return (bool) $this->parse_redis_response( $response );
|
||
|
|
}, $tx->{$method}() ?: [] );
|
||
|
|
|
||
|
|
if ( count( $results ) !== count( $keys ) ) {
|
||
|
|
$tx->discard();
|
||
|
|
|
||
|
|
return array_fill_keys( $keys, false );
|
||
|
|
}
|
||
|
|
|
||
|
|
$results = array_combine( $keys, $results );
|
||
|
|
|
||
|
|
foreach ( $results as $key => $result ) {
|
||
|
|
if ( $result ) {
|
||
|
|
$this->add_to_internal_cache( $derived_keys[ $key ], $data[ $key ] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return array_combine( $keys, array_fill( 0, count( $keys ), false ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Replace a value in the cache.
|
||
|
|
*
|
||
|
|
* If the specified key doesn't exist, the value is not stored and the function
|
||
|
|
* returns false.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value.
|
||
|
|
* @param mixed $value The value to store.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param int $expiration The expiration time, defaults to 0.
|
||
|
|
* @return bool Returns TRUE on success or FALSE on failure.
|
||
|
|
*/
|
||
|
|
public function replace( $key, $value, $group = 'default', $expiration = 0 ) {
|
||
|
|
return $this->add_or_replace( false, $key, $value, $group, $expiration );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Add or replace a value in the cache.
|
||
|
|
*
|
||
|
|
* Add does not set the value if the key exists; replace does not replace if the value doesn't exist.
|
||
|
|
*
|
||
|
|
* @param bool $add True if should only add if value doesn't exist, false to only add when value already exists.
|
||
|
|
* @param string $key The key under which to store the value.
|
||
|
|
* @param mixed $value The value to store.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param int $expiration The expiration time, defaults to 0.
|
||
|
|
* @return bool Returns TRUE on success or FALSE on failure.
|
||
|
|
*/
|
||
|
|
protected function add_or_replace( $add, $key, $value, $group = 'default', $expiration = 0 ) {
|
||
|
|
$cache_addition_suspended = function_exists( 'wp_suspend_cache_addition' ) && wp_suspend_cache_addition();
|
||
|
|
|
||
|
|
if ( $add && $cache_addition_suspended ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$result = true;
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
$derived_key = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
// Save if group not excluded and redis is up.
|
||
|
|
if ( ! $this->is_ignored_group( $san_group ) && $this->redis_status() ) {
|
||
|
|
try {
|
||
|
|
$orig_exp = $expiration;
|
||
|
|
$expiration = $this->validate_expiration( $expiration );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filters the cache expiration time
|
||
|
|
*
|
||
|
|
* @since 1.4.2
|
||
|
|
* @param int $expiration The time in seconds the entry expires. 0 for no expiry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The cache group.
|
||
|
|
* @param mixed $orig_exp The original expiration value before validation.
|
||
|
|
*/
|
||
|
|
$expiration = apply_filters( 'redis_cache_expiration', $expiration, $key, $group, $orig_exp );
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
if ( $add ) {
|
||
|
|
$args = [ $derived_key, $this->maybe_serialize( $value ) ];
|
||
|
|
|
||
|
|
if ( $this->is_predis() ) {
|
||
|
|
$args[] = 'nx';
|
||
|
|
|
||
|
|
if ( $expiration ) {
|
||
|
|
$args[] = 'ex';
|
||
|
|
$args[] = $expiration;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ( $expiration ) {
|
||
|
|
$args[] = [
|
||
|
|
'nx',
|
||
|
|
'ex' => $expiration,
|
||
|
|
];
|
||
|
|
} else {
|
||
|
|
$args[] = [ 'nx' ];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$result = $this->parse_redis_response(
|
||
|
|
$this->redis->set( ...$args )
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( ! $result ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} elseif ( $expiration ) {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->setex( $derived_key, $expiration, $this->maybe_serialize( $value ) ) );
|
||
|
|
} else {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->set( $derived_key, $this->maybe_serialize( $value ) ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$exists = array_key_exists( $derived_key, $this->cache );
|
||
|
|
|
||
|
|
if ( (bool) $add === $exists ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $result ) {
|
||
|
|
$this->add_to_internal_cache( $derived_key, $value );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove the item from the cache.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @return bool Returns TRUE on success or FALSE on failure.
|
||
|
|
*/
|
||
|
|
public function delete( $key, $group = 'default', $deprecated = false ) {
|
||
|
|
$result = false;
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
$derived_key = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
if ( array_key_exists( $derived_key, $this->cache ) ) {
|
||
|
|
unset( $this->cache[ $derived_key ] );
|
||
|
|
$result = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
if ( $this->redis_status() && ! $this->is_ignored_group( $san_group ) ) {
|
||
|
|
try {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->del( $derived_key ) );
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
/**
|
||
|
|
* Fires on every cache key deletion
|
||
|
|
*
|
||
|
|
* @since 1.3.3
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_delete', $key, $group, $execute_time );
|
||
|
|
}
|
||
|
|
|
||
|
|
return (bool) $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes multiple values from the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $keys Array of keys to be deleted.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped.
|
||
|
|
* @return bool[] Array of return values, grouped by key. Each value is either
|
||
|
|
* true on success, or false if the contents were not deleted.
|
||
|
|
*/
|
||
|
|
public function delete_multiple( array $keys, $group = 'default' ) {
|
||
|
|
if (
|
||
|
|
$this->redis_status() &&
|
||
|
|
method_exists( $this->redis, 'pipeline' ) &&
|
||
|
|
! $this->is_ignored_group( $group )
|
||
|
|
) {
|
||
|
|
return $this->delete_multiple_at_once( $keys, $group );
|
||
|
|
}
|
||
|
|
|
||
|
|
$values = [];
|
||
|
|
|
||
|
|
foreach ( $keys as $key ) {
|
||
|
|
$values[ $key ] = $this->delete( $key, $group );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $values;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes multiple values from the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $keys Array of keys to be deleted.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped.
|
||
|
|
* @return bool[] Array of return values, grouped by key. Each value is either
|
||
|
|
* true on success, or false if the contents were not deleted.
|
||
|
|
*/
|
||
|
|
protected function delete_multiple_at_once( array $keys, $group = 'default' ) {
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
try {
|
||
|
|
$tx = $this->redis->pipeline();
|
||
|
|
|
||
|
|
foreach ( $keys as $key ) {
|
||
|
|
$derived_key = $this->build_key( (string) $key, $group );
|
||
|
|
|
||
|
|
$tx->del( $derived_key );
|
||
|
|
|
||
|
|
unset( $this->cache[ $derived_key ] );
|
||
|
|
}
|
||
|
|
|
||
|
|
$method = $this->is_predis() ? 'execute' : 'exec';
|
||
|
|
|
||
|
|
$results = array_map( function ( $response ) {
|
||
|
|
return (bool) $this->parse_redis_response( $response );
|
||
|
|
}, $tx->{$method}() ?: [] );
|
||
|
|
|
||
|
|
if ( count( $results ) !== count( $keys ) ) {
|
||
|
|
$tx->discard();
|
||
|
|
|
||
|
|
return array_fill_keys( $keys, false );
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return array_combine( $keys, array_fill( 0, count( $keys ), false ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
foreach ( $keys as $key ) {
|
||
|
|
/**
|
||
|
|
* Fires on every cache key deletion
|
||
|
|
*
|
||
|
|
* @since 1.3.3
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_delete', $key, $group, $execute_time );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return array_combine( $keys, $results );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Removes all cache items from the in-memory runtime cache.
|
||
|
|
*
|
||
|
|
* @return bool True on success, false on failure.
|
||
|
|
*/
|
||
|
|
public function flush_runtime() {
|
||
|
|
$this->cache = [];
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invalidate all items in the cache. If `WP_REDIS_SELECTIVE_FLUSH` is `true`,
|
||
|
|
* only keys prefixed with the `WP_REDIS_PREFIX` are flushed.
|
||
|
|
*
|
||
|
|
* @return bool True on success, false on failure.
|
||
|
|
*/
|
||
|
|
public function flush() {
|
||
|
|
$results = [];
|
||
|
|
$this->cache = [];
|
||
|
|
|
||
|
|
if ( $this->redis_status() ) {
|
||
|
|
$salt = defined( 'WP_REDIS_PREFIX' ) ? trim( WP_REDIS_PREFIX ) : null;
|
||
|
|
$selective = defined( 'WP_REDIS_SELECTIVE_FLUSH' ) ? WP_REDIS_SELECTIVE_FLUSH : null;
|
||
|
|
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
if ( $salt && $selective ) {
|
||
|
|
$script = $this->get_flush_closure( $salt );
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
try {
|
||
|
|
foreach ( $this->redis->_masters() as $master ) {
|
||
|
|
$redis = new Redis();
|
||
|
|
$redis->connect( $master[0], $master[1] );
|
||
|
|
$results[] = $this->parse_redis_response( $script() );
|
||
|
|
unset( $redis );
|
||
|
|
}
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
try {
|
||
|
|
$results[] = $this->parse_redis_response( $script() );
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
try {
|
||
|
|
foreach ( $this->redis->_masters() as $master ) {
|
||
|
|
$results[] = $this->parse_redis_response( $this->redis->flushdb( $master ) );
|
||
|
|
}
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
try {
|
||
|
|
$results[] = $this->parse_redis_response( $this->redis->flushdb() );
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fires on every cache flush
|
||
|
|
*
|
||
|
|
* @since 1.3.5
|
||
|
|
* @param null|array $results Array of flush results.
|
||
|
|
* @param int $deprecated Unused. Default 0.
|
||
|
|
* @param bool $seletive Whether a selective flush took place.
|
||
|
|
* @param string $salt The defined key prefix.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_flush', $results, 0, $selective, $salt, $execute_time );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( empty( $results ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $results as $result ) {
|
||
|
|
if ( ! $result ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Removes all cache items in a group.
|
||
|
|
*
|
||
|
|
* @param string $group Name of group to remove from cache.
|
||
|
|
* @return bool Returns TRUE on success or FALSE on failure.
|
||
|
|
*/
|
||
|
|
public function flush_group( $group )
|
||
|
|
{
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
if ( is_multisite() && ! $this->is_global_group( $san_group ) ) {
|
||
|
|
$salt = str_replace( "{$this->blog_prefix}:{$san_group}", "*:{$san_group}", $this->fast_build_key( '*', $san_group ) );
|
||
|
|
} else {
|
||
|
|
$salt = $this->fast_build_key( '*', $san_group );
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $this->cache as $key => $value ) {
|
||
|
|
if ( strpos( $key, "{$san_group}:" ) === 0 || strpos( $key, ":{$san_group}:" ) !== false ) {
|
||
|
|
unset( $this->cache[ $key ] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( in_array( $san_group, $this->unflushable_groups ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! $this->redis_status() ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$results = [];
|
||
|
|
|
||
|
|
$start_time = microtime( true );
|
||
|
|
$script = $this->lua_flush_closure( $salt, false );
|
||
|
|
|
||
|
|
try {
|
||
|
|
if ( defined( 'WP_REDIS_CLUSTER' ) ) {
|
||
|
|
foreach ( $this->redis->_masters() as $master ) {
|
||
|
|
$redis = new Redis;
|
||
|
|
$redis->connect( $master[0], $master[1] );
|
||
|
|
$results[] = $this->parse_redis_response( $script() );
|
||
|
|
unset( $redis );
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$results[] = $this->parse_redis_response( $script() );
|
||
|
|
}
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fires on every group cache flush
|
||
|
|
*
|
||
|
|
* @param null|array $results Array of flush results.
|
||
|
|
* @param string $salt The defined key prefix.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
* @since 2.2.3
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_flush_group', $results, $salt, $execute_time );
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $results as $result ) {
|
||
|
|
if ( ! $result ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a closure to flush selectively.
|
||
|
|
*
|
||
|
|
* @param string $salt The salt to be used to differentiate.
|
||
|
|
* @return callable Generated callable executing the lua script.
|
||
|
|
*/
|
||
|
|
protected function get_flush_closure( $salt ) {
|
||
|
|
if ( $this->unflushable_groups ) {
|
||
|
|
return $this->lua_flush_extended_closure( $salt );
|
||
|
|
} else {
|
||
|
|
return $this->lua_flush_closure( $salt );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Quotes a string for usage in the `glob` function
|
||
|
|
*
|
||
|
|
* @param string $string The string to quote.
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
protected function glob_quote( $string ) {
|
||
|
|
$characters = [ '*', '+', '?', '!', '{', '}', '[', ']', '(', ')', '|', '@' ];
|
||
|
|
|
||
|
|
return str_replace(
|
||
|
|
$characters,
|
||
|
|
array_map(
|
||
|
|
function ( $character ) {
|
||
|
|
return "[{$character}]";
|
||
|
|
},
|
||
|
|
$characters
|
||
|
|
),
|
||
|
|
$string
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a closure ready to be called to flush selectively ignoring unflushable groups.
|
||
|
|
*
|
||
|
|
* @param string $salt The salt to be used to differentiate.
|
||
|
|
* @param bool $escape ...
|
||
|
|
* @return callable Generated callable executing the lua script.
|
||
|
|
*/
|
||
|
|
protected function lua_flush_closure( $salt, $escape = true ) {
|
||
|
|
$salt = $escape ? $this->glob_quote( $salt ) : $salt;
|
||
|
|
|
||
|
|
return function () use ( $salt ) {
|
||
|
|
$script = <<<LUA
|
||
|
|
local cur = 0
|
||
|
|
local i = 0
|
||
|
|
local tmp
|
||
|
|
repeat
|
||
|
|
tmp = redis.call('SCAN', cur, 'MATCH', '{$salt}*')
|
||
|
|
cur = tonumber(tmp[1])
|
||
|
|
if tmp[2] then
|
||
|
|
for _, v in pairs(tmp[2]) do
|
||
|
|
redis.call('del', v)
|
||
|
|
i = i + 1
|
||
|
|
end
|
||
|
|
end
|
||
|
|
until 0 == cur
|
||
|
|
return i
|
||
|
|
LUA;
|
||
|
|
|
||
|
|
if ( version_compare( $this->redis_version(), '5', '<' ) && version_compare( $this->redis_version(), '3.2', '>=' ) ) {
|
||
|
|
$script = 'redis.replicate_commands()' . "\n" . $script;
|
||
|
|
}
|
||
|
|
|
||
|
|
$args = $this->is_predis() ? [ $script, 0 ] : [ $script ];
|
||
|
|
|
||
|
|
return call_user_func_array( [ $this->redis, 'eval' ], $args );
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a closure ready to be called to flush selectively.
|
||
|
|
*
|
||
|
|
* @param string $salt The salt to be used to differentiate.
|
||
|
|
* @return callable Generated callable executing the lua script.
|
||
|
|
*/
|
||
|
|
protected function lua_flush_extended_closure( $salt ) {
|
||
|
|
$salt = $this->glob_quote( $salt );
|
||
|
|
|
||
|
|
return function () use ( $salt ) {
|
||
|
|
$salt_length = strlen( $salt );
|
||
|
|
|
||
|
|
$unflushable = array_map(
|
||
|
|
function ( $group ) {
|
||
|
|
return ":{$group}:";
|
||
|
|
},
|
||
|
|
$this->unflushable_groups
|
||
|
|
);
|
||
|
|
|
||
|
|
$script = <<<LUA
|
||
|
|
local cur = 0
|
||
|
|
local i = 0
|
||
|
|
local d, tmp
|
||
|
|
repeat
|
||
|
|
tmp = redis.call('SCAN', cur, 'MATCH', '{$salt}*')
|
||
|
|
cur = tonumber(tmp[1])
|
||
|
|
if tmp[2] then
|
||
|
|
for _, v in pairs(tmp[2]) do
|
||
|
|
d = true
|
||
|
|
for _, s in pairs(KEYS) do
|
||
|
|
d = d and not v:find(s, {$salt_length})
|
||
|
|
if not d then break end
|
||
|
|
end
|
||
|
|
if d then
|
||
|
|
redis.call('del', v)
|
||
|
|
i = i + 1
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
until 0 == cur
|
||
|
|
return i
|
||
|
|
LUA;
|
||
|
|
if ( version_compare( $this->redis_version(), '5', '<' ) && version_compare( $this->redis_version(), '3.2', '>=' ) ) {
|
||
|
|
$script = 'redis.replicate_commands()' . "\n" . $script;
|
||
|
|
}
|
||
|
|
|
||
|
|
$args = $this->is_predis()
|
||
|
|
? array_merge( [ $script, count( $unflushable ) ], $unflushable )
|
||
|
|
: [ $script, $unflushable, count( $unflushable ) ];
|
||
|
|
|
||
|
|
return call_user_func_array( [ $this->redis, 'eval' ], $args );
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve object from cache.
|
||
|
|
*
|
||
|
|
* Gets an object from cache based on $key and $group.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param bool $force Optional. Whether to force a refetch rather than relying on the local
|
||
|
|
* cache. Default false.
|
||
|
|
* @param bool $found Optional. Whether the key was found in the cache. Disambiguates a return of
|
||
|
|
* false, a storable value. Passed by reference. Default null.
|
||
|
|
* @return bool|mixed Cached object value.
|
||
|
|
*/
|
||
|
|
public function get( $key, $group = 'default', $force = false, &$found = null ) {
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
$derived_key = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
if ( array_key_exists( $derived_key, $this->cache ) && ! $force ) {
|
||
|
|
$found = true;
|
||
|
|
$this->cache_hits++;
|
||
|
|
$value = $this->get_from_internal_cache( $derived_key );
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
} elseif ( $this->is_ignored_group( $group ) || ! $this->redis_status() ) {
|
||
|
|
$found = false;
|
||
|
|
$this->cache_misses++;
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
try {
|
||
|
|
$result = $this->redis->get( $derived_key );
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
|
||
|
|
if ( $result === null || $result === false ) {
|
||
|
|
$found = false;
|
||
|
|
$this->cache_misses++;
|
||
|
|
|
||
|
|
return false;
|
||
|
|
} else {
|
||
|
|
$found = true;
|
||
|
|
$this->cache_hits++;
|
||
|
|
$value = $this->maybe_unserialize( $result );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->add_to_internal_cache( $derived_key, $value );
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
/**
|
||
|
|
* Fires on every cache get request
|
||
|
|
*
|
||
|
|
* @since 1.2.2
|
||
|
|
* @param mixed $value Value of the cache entry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param bool $force Whether a forced refetch has taken place rather than relying on the local cache.
|
||
|
|
* @param bool $found Whether the key was found in the cache.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_get', $key, $value, $group, $force, $found, $execute_time );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'apply_filters' ) && function_exists( 'has_filter' ) ) {
|
||
|
|
if ( has_filter( 'redis_object_cache_get_value' ) ) {
|
||
|
|
/**
|
||
|
|
* Filters the return value
|
||
|
|
*
|
||
|
|
* @since 1.4.2
|
||
|
|
* @param mixed $value Value of the cache entry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param bool $force Whether a forced refetch has taken place rather than relying on the local cache.
|
||
|
|
* @param bool $found Whether the key was found in the cache.
|
||
|
|
*/
|
||
|
|
return apply_filters( 'redis_object_cache_get_value', $value, $key, $group, $force, $found );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieves multiple values from the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $keys Array of keys under which the cache contents are stored.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped. Default empty.
|
||
|
|
* @param bool $force Optional. Whether to force an update of the local cache
|
||
|
|
* from the persistent cache. Default false.
|
||
|
|
* @return array|false Array of values organized into groups.
|
||
|
|
*/
|
||
|
|
public function get_multiple( $keys, $group = 'default', $force = false ) {
|
||
|
|
if ( ! is_array( $keys ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$cache = [];
|
||
|
|
$derived_keys = [];
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
foreach ( $keys as $key ) {
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$derived_keys[ $key ] = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $this->is_ignored_group( $group ) || ! $this->redis_status() ) {
|
||
|
|
foreach ( $keys as $key ) {
|
||
|
|
$value = $this->get_from_internal_cache( $derived_keys[ $key ] );
|
||
|
|
$cache[ $key ] = $value;
|
||
|
|
|
||
|
|
if ($value === false) {
|
||
|
|
$this->cache_misses++;
|
||
|
|
} else {
|
||
|
|
$this->cache_hits++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $cache;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! $force ) {
|
||
|
|
foreach ( $keys as $key ) {
|
||
|
|
$value = $this->get_from_internal_cache( $derived_keys[ $key ] );
|
||
|
|
|
||
|
|
if ( $value === false ) {
|
||
|
|
$this->cache_misses++;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
$cache[ $key ] = $value;
|
||
|
|
$this->cache_hits++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$remaining_keys = array_filter(
|
||
|
|
$keys,
|
||
|
|
function ( $key ) use ( $cache ) {
|
||
|
|
return ! array_key_exists( $key, $cache );
|
||
|
|
}
|
||
|
|
);
|
||
|
|
|
||
|
|
if ( empty( $remaining_keys ) ) {
|
||
|
|
return $cache;
|
||
|
|
}
|
||
|
|
|
||
|
|
$start_time = microtime( true );
|
||
|
|
$results = [];
|
||
|
|
|
||
|
|
$remaining_ids = array_map(
|
||
|
|
function ( $key ) use ( $derived_keys ) {
|
||
|
|
return $derived_keys[ $key ];
|
||
|
|
},
|
||
|
|
$remaining_keys
|
||
|
|
);
|
||
|
|
|
||
|
|
try {
|
||
|
|
$results = array_combine(
|
||
|
|
$remaining_keys,
|
||
|
|
$this->redis->mget( $remaining_ids )
|
||
|
|
?: array_fill( 0, count( $remaining_ids ), false )
|
||
|
|
);
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
$results = array_combine(
|
||
|
|
$remaining_keys,
|
||
|
|
array_fill( 0, count( $remaining_ids ), false )
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
|
||
|
|
foreach ( $results as $key => $value ) {
|
||
|
|
if ( $value === null || $value === false ) {
|
||
|
|
$cache[ $key ] = false;
|
||
|
|
$this->cache_misses++;
|
||
|
|
} else {
|
||
|
|
$cache[ $key ] = $this->maybe_unserialize( $value );
|
||
|
|
$this->add_to_internal_cache( $derived_keys[ $key ], $cache[ $key ] );
|
||
|
|
$this->cache_hits++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
/**
|
||
|
|
* Fires on every cache get multiple request
|
||
|
|
*
|
||
|
|
* @since 2.0.6
|
||
|
|
* @param array $keys Array of keys under which the cache contents are stored.
|
||
|
|
* @param array $cache Cache items.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param bool $force Whether a forced refetch has taken place rather than relying on the local cache.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_get_multiple', $keys, $cache, $group, $force, $execute_time );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'apply_filters' ) && function_exists( 'has_filter' ) ) {
|
||
|
|
if ( has_filter( 'redis_object_cache_get_value' ) ) {
|
||
|
|
foreach ( $cache as $key => $value ) {
|
||
|
|
/**
|
||
|
|
* Filters the return value
|
||
|
|
*
|
||
|
|
* @since 1.4.2
|
||
|
|
* @param mixed $value Value of the cache entry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param bool $force Whether a forced refetch has taken place rather than relying on the local cache.
|
||
|
|
*/
|
||
|
|
$cache[ $key ] = apply_filters( 'redis_object_cache_get_value', $value, $key, $group, $force );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $cache;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets a value in cache.
|
||
|
|
*
|
||
|
|
* The value is set whether or not this key already exists in Redis.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value.
|
||
|
|
* @param mixed $value The value to store.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param int $expiration The expiration time, defaults to 0.
|
||
|
|
* @return bool Returns TRUE on success or FALSE on failure.
|
||
|
|
*/
|
||
|
|
public function set( $key, $value, $group = 'default', $expiration = 0 ) {
|
||
|
|
$result = true;
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
$derived_key = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
// Save if group not excluded from redis and redis is up.
|
||
|
|
if ( ! $this->is_ignored_group( $group ) && $this->redis_status() ) {
|
||
|
|
$orig_exp = $expiration;
|
||
|
|
$expiration = $this->validate_expiration( $expiration );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filters the cache expiration time
|
||
|
|
*
|
||
|
|
* @since 1.4.2
|
||
|
|
* @param int $expiration The time in seconds the entry expires. 0 for no expiry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The cache group.
|
||
|
|
* @param mixed $orig_exp The original expiration value before validation.
|
||
|
|
*/
|
||
|
|
$expiration = apply_filters( 'redis_cache_expiration', $expiration, $key, $group, $orig_exp );
|
||
|
|
|
||
|
|
try {
|
||
|
|
if ( $expiration ) {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->setex( $derived_key, $expiration, $this->maybe_serialize( $value ) ) );
|
||
|
|
} else {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->set( $derived_key, $this->maybe_serialize( $value ) ) );
|
||
|
|
}
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
}
|
||
|
|
|
||
|
|
// If the set was successful, or we didn't go to redis.
|
||
|
|
if ( $result ) {
|
||
|
|
$this->add_to_internal_cache( $derived_key, $value );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fires on every cache set
|
||
|
|
*
|
||
|
|
* @since 1.2.2
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param mixed $value Value of the cache entry.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param int $expiration The time in seconds the entry expires. 0 for no expiry.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_set', $key, $value, $group, $expiration, $execute_time );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets multiple values to the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $data Array of key and value to be set.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped.
|
||
|
|
* @param int $expire Optional. When to expire the cache contents, in seconds.
|
||
|
|
* Default 0 (no expiration).
|
||
|
|
* @return bool[] Array of return values, grouped by key. Each value is always true.
|
||
|
|
*/
|
||
|
|
public function set_multiple( array $data, $group = 'default', $expire = 0 ) {
|
||
|
|
if (
|
||
|
|
$this->redis_status() &&
|
||
|
|
method_exists( $this->redis, 'pipeline' ) &&
|
||
|
|
! $this->is_ignored_group( $group )
|
||
|
|
) {
|
||
|
|
return $this->set_multiple_at_once( $data, $group, $expire );
|
||
|
|
}
|
||
|
|
|
||
|
|
$values = [];
|
||
|
|
|
||
|
|
foreach ( $data as $key => $value ) {
|
||
|
|
$values[ $key ] = $this->set( $key, $value, $group, $expire );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $values;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets multiple values to the cache in one call.
|
||
|
|
*
|
||
|
|
* @param array $data Array of key and value to be set.
|
||
|
|
* @param string $group Optional. Where the cache contents are grouped.
|
||
|
|
* @param int $expiration Optional. When to expire the cache contents, in seconds.
|
||
|
|
* Default 0 (no expiration).
|
||
|
|
* @return bool[] Array of return values, grouped by key. Each value is always true.
|
||
|
|
*/
|
||
|
|
protected function set_multiple_at_once( array $data, $group = 'default', $expiration = 0 )
|
||
|
|
{
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
$derived_keys = [];
|
||
|
|
|
||
|
|
$orig_exp = $expiration;
|
||
|
|
$expiration = $this->validate_expiration( $expiration );
|
||
|
|
$expirations = [];
|
||
|
|
|
||
|
|
$tx = $this->redis->pipeline();
|
||
|
|
$keys = array_keys( $data );
|
||
|
|
|
||
|
|
foreach ( $data as $key => $value ) {
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$derived_key = $derived_keys[ $key ] = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filters the cache expiration time
|
||
|
|
*
|
||
|
|
* @param int $expiration The time in seconds the entry expires. 0 for no expiry.
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param string $group The cache group.
|
||
|
|
* @param mixed $orig_exp The original expiration value before validation.
|
||
|
|
*/
|
||
|
|
$expiration = $expirations[ $key ] = apply_filters( 'redis_cache_expiration', $expiration, $key, $group, $orig_exp );
|
||
|
|
|
||
|
|
if ( $expiration ) {
|
||
|
|
$tx->setex( $derived_key, $expiration, $this->maybe_serialize( $value ) );
|
||
|
|
} else {
|
||
|
|
$tx->set( $derived_key, $this->maybe_serialize( $value ) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
$method = $this->is_predis() ? 'execute' : 'exec';
|
||
|
|
|
||
|
|
$results = array_map( function ( $response ) {
|
||
|
|
return (bool) $this->parse_redis_response( $response );
|
||
|
|
}, $tx->{$method}() ?: [] );
|
||
|
|
|
||
|
|
if ( count( $results ) !== count( $keys ) ) {
|
||
|
|
$tx->discard();
|
||
|
|
|
||
|
|
return array_fill_keys( $keys, false );
|
||
|
|
}
|
||
|
|
|
||
|
|
$results = array_combine( $keys, $results );
|
||
|
|
|
||
|
|
foreach ( $results as $key => $result ) {
|
||
|
|
if ( $result ) {
|
||
|
|
$this->add_to_internal_cache( $derived_keys[ $key ], $data[ $key ] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return array_combine( $keys, array_fill( 0, count( $keys ), false ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls++;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
foreach ( $data as $key => $value ) {
|
||
|
|
/**
|
||
|
|
* Fires on every cache set
|
||
|
|
*
|
||
|
|
* @param string $key The cache key.
|
||
|
|
* @param mixed $value Value of the cache entry.
|
||
|
|
* @param string $group The group value appended to the $key.
|
||
|
|
* @param int $expiration The time in seconds the entry expires. 0 for no expiry.
|
||
|
|
* @param float $execute_time Execution time for the request in seconds.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_set', $key, $value, $group, $expirations[ $key ], $execute_time );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Increment a Redis counter by the amount specified
|
||
|
|
*
|
||
|
|
* @param string $key The key name.
|
||
|
|
* @param int $offset Optional. The increment. Defaults to 1.
|
||
|
|
* @param string $group Optional. The key group. Default is 'default'.
|
||
|
|
* @return int|bool
|
||
|
|
*/
|
||
|
|
public function increment( $key, $offset = 1, $group = 'default' ) {
|
||
|
|
$offset = (int) $offset;
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
$derived_key = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
// If group is a non-Redis group, save to internal cache, not Redis.
|
||
|
|
if ( $this->is_ignored_group( $group ) || ! $this->redis_status() ) {
|
||
|
|
$value = $this->get_from_internal_cache( $derived_key );
|
||
|
|
$value += $offset;
|
||
|
|
$this->add_to_internal_cache( $derived_key, $value );
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->incrBy( $derived_key, $offset ) );
|
||
|
|
|
||
|
|
$this->add_to_internal_cache( $derived_key, (int) $this->redis->get( $derived_key ) );
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls += 2;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Alias of `increment()`.
|
||
|
|
*
|
||
|
|
* @see self::increment()
|
||
|
|
* @param string $key The key name.
|
||
|
|
* @param int $offset Optional. The increment. Defaults to 1.
|
||
|
|
* @param string $group Optional. The key group. Default is 'default'.
|
||
|
|
* @return int|bool
|
||
|
|
*/
|
||
|
|
public function incr( $key, $offset = 1, $group = 'default' ) {
|
||
|
|
return $this->increment( $key, $offset, $group );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decrement a Redis counter by the amount specified
|
||
|
|
*
|
||
|
|
* @param string $key The key name.
|
||
|
|
* @param int $offset Optional. The decrement. Defaults to 1.
|
||
|
|
* @param string $group Optional. The key group. Default is 'default'.
|
||
|
|
* @return int|bool
|
||
|
|
*/
|
||
|
|
public function decrement( $key, $offset = 1, $group = 'default' ) {
|
||
|
|
$offset = (int) $offset;
|
||
|
|
$start_time = microtime( true );
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
$derived_key = $this->fast_build_key( $san_key, $san_group );
|
||
|
|
|
||
|
|
// If group is a non-Redis group, save to internal cache, not Redis.
|
||
|
|
if ( $this->is_ignored_group( $group ) || ! $this->redis_status() ) {
|
||
|
|
$value = $this->get_from_internal_cache( $derived_key );
|
||
|
|
$value -= $offset;
|
||
|
|
$this->add_to_internal_cache( $derived_key, $value );
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
$result = $this->parse_redis_response( $this->redis->decrBy( $derived_key, $offset ) );
|
||
|
|
|
||
|
|
$this->add_to_internal_cache( $derived_key, (int) $this->redis->get( $derived_key ) );
|
||
|
|
} catch ( Exception $exception ) {
|
||
|
|
$this->handle_exception( $exception );
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$execute_time = microtime( true ) - $start_time;
|
||
|
|
|
||
|
|
$this->cache_calls += 2;
|
||
|
|
$this->cache_time += $execute_time;
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Alias of `decrement()`.
|
||
|
|
*
|
||
|
|
* @see self::decrement()
|
||
|
|
* @param string $key The key name.
|
||
|
|
* @param int $offset Optional. The decrement. Defaults to 1.
|
||
|
|
* @param string $group Optional. The key group. Default is 'default'.
|
||
|
|
* @return int|bool
|
||
|
|
*/
|
||
|
|
public function decr( $key, $offset = 1, $group = 'default' ) {
|
||
|
|
return $this->decrement( $key, $offset, $group );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Render data about current cache requests
|
||
|
|
* Used by the Debug bar plugin
|
||
|
|
*
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
public function stats() {
|
||
|
|
?>
|
||
|
|
<p>
|
||
|
|
<strong>Redis Status:</strong>
|
||
|
|
<?php echo $this->redis_status() ? 'Connected' : 'Not connected'; ?>
|
||
|
|
<br />
|
||
|
|
<strong>Redis Client:</strong>
|
||
|
|
<?php echo $this->diagnostics['client'] ?: 'Unknown'; ?>
|
||
|
|
<br />
|
||
|
|
<strong>Cache Hits:</strong>
|
||
|
|
<?php echo (int) $this->cache_hits; ?>
|
||
|
|
<br />
|
||
|
|
<strong>Cache Misses:</strong>
|
||
|
|
<?php echo (int) $this->cache_misses; ?>
|
||
|
|
<br />
|
||
|
|
<strong>Cache Size:</strong>
|
||
|
|
<?php echo number_format_i18n( strlen( serialize( $this->cache ) ) / 1024, 2 ); ?> KB
|
||
|
|
</p>
|
||
|
|
<?php
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns various information about the object cache.
|
||
|
|
*
|
||
|
|
* @return object
|
||
|
|
*/
|
||
|
|
public function info() {
|
||
|
|
$total = $this->cache_hits + $this->cache_misses;
|
||
|
|
|
||
|
|
$bytes = array_map(
|
||
|
|
function ( $keys ) {
|
||
|
|
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize
|
||
|
|
return strlen( serialize( $keys ) );
|
||
|
|
},
|
||
|
|
$this->cache
|
||
|
|
);
|
||
|
|
|
||
|
|
return (object) [
|
||
|
|
'hits' => $this->cache_hits,
|
||
|
|
'misses' => $this->cache_misses,
|
||
|
|
'ratio' => $total > 0 ? round( $this->cache_hits / ( $total / 100 ), 1 ) : 100,
|
||
|
|
'bytes' => array_sum( $bytes ),
|
||
|
|
'time' => $this->cache_time,
|
||
|
|
'calls' => $this->cache_calls,
|
||
|
|
'groups' => (object) [
|
||
|
|
'global' => $this->global_groups,
|
||
|
|
'non_persistent' => $this->ignored_groups,
|
||
|
|
'unflushable' => $this->unflushable_groups,
|
||
|
|
],
|
||
|
|
'errors' => empty( $this->errors ) ? null : $this->errors,
|
||
|
|
'meta' => [
|
||
|
|
'Client' => $this->diagnostics['client'] ?? 'Unknown',
|
||
|
|
'Redis Version' => $this->redis_version,
|
||
|
|
],
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Builds a key for the cached object using the prefix, group and key.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value, pre-sanitized.
|
||
|
|
* @param string $group The group value appended to the $key, pre-sanitized.
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function build_key( $key, $group = 'default' ) {
|
||
|
|
if ( empty( $group ) ) {
|
||
|
|
$group = 'default';
|
||
|
|
}
|
||
|
|
|
||
|
|
$san_key = $this->sanitize_key_part( $key );
|
||
|
|
$san_group = $this->sanitize_key_part( $group );
|
||
|
|
|
||
|
|
return $this->fast_build_key($san_key, $san_group);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Builds a key for the cached object using the prefix, group and key.
|
||
|
|
*
|
||
|
|
* @param string $key The key under which to store the value, pre-sanitized.
|
||
|
|
* @param string $group The group value appended to the $key, pre-sanitized.
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function fast_build_key( $key, $group = 'default' ) {
|
||
|
|
if ( empty( $group ) ) {
|
||
|
|
$group = 'default';
|
||
|
|
}
|
||
|
|
|
||
|
|
$salt = defined( 'WP_REDIS_PREFIX' ) ? trim( WP_REDIS_PREFIX ) : '';
|
||
|
|
|
||
|
|
$prefix = $this->is_global_group( $group ) ? $this->global_prefix : $this->blog_prefix;
|
||
|
|
$prefix = trim( $prefix, '_-:$' );
|
||
|
|
|
||
|
|
return "{$salt}{$prefix}:{$group}:{$key}";
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Replaces the set group separator by another one
|
||
|
|
*
|
||
|
|
* @param string $part The string to sanitize.
|
||
|
|
* @return string Sanitized string.
|
||
|
|
*/
|
||
|
|
protected function sanitize_key_part( $part ) {
|
||
|
|
return str_replace( ':', '-', $part );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the given group is part the ignored group array
|
||
|
|
*
|
||
|
|
* @param string $group Name of the group to check, pre-sanitized.
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function is_ignored_group( $group ) {
|
||
|
|
return $this->is_group_of_type( $group, 'ignored' );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the given group is part the global group array
|
||
|
|
*
|
||
|
|
* @param string $group Name of the group to check, pre-sanitized.
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function is_global_group( $group ) {
|
||
|
|
return $this->is_group_of_type( $group, 'global' );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the given group is part the unflushable group array
|
||
|
|
*
|
||
|
|
* @param string $group Name of the group to check, pre-sanitized.
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function is_unflushable_group( $group ) {
|
||
|
|
return $this->is_group_of_type( $group, 'unflushable' );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks the type of the given group
|
||
|
|
*
|
||
|
|
* @param string $group Name of the group to check, pre-sanitized.
|
||
|
|
* @param string $type Type of the group to check.
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
private function is_group_of_type( $group, $type ) {
|
||
|
|
return isset( $this->group_type[ $group ] )
|
||
|
|
&& $this->group_type[ $group ] == $type;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert Redis responses into something meaningful
|
||
|
|
*
|
||
|
|
* @param mixed $response Response sent from the redis instance.
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
protected function parse_redis_response( $response ) {
|
||
|
|
if ( is_bool( $response ) ) {
|
||
|
|
return $response;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( is_numeric( $response ) ) {
|
||
|
|
return $response;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( is_object( $response ) && method_exists( $response, 'getPayload' ) ) {
|
||
|
|
return $response->getPayload() === 'OK';
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Simple wrapper for saving object to the internal cache.
|
||
|
|
*
|
||
|
|
* @param string $derived_key Key to save value under.
|
||
|
|
* @param mixed $value Object value.
|
||
|
|
*/
|
||
|
|
public function add_to_internal_cache( $derived_key, $value ) {
|
||
|
|
if ( is_object( $value ) ) {
|
||
|
|
$value = clone $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->cache[ $derived_key ] = $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a value specifically from the internal, run-time cache, not Redis.
|
||
|
|
*
|
||
|
|
* @param int|string $derived_key Key value.
|
||
|
|
*
|
||
|
|
* @return bool|mixed Value on success; false on failure.
|
||
|
|
*/
|
||
|
|
public function get_from_internal_cache( $derived_key ) {
|
||
|
|
if ( ! array_key_exists( $derived_key, $this->cache ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( is_object( $this->cache[ $derived_key ] ) ) {
|
||
|
|
return clone $this->cache[ $derived_key ];
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->cache[ $derived_key ];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* In multisite, switch blog prefix when switching blogs
|
||
|
|
*
|
||
|
|
* @param int $_blog_id Blog ID.
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
public function switch_to_blog( $_blog_id ) {
|
||
|
|
if ( ! function_exists( 'is_multisite' ) || ! is_multisite() ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->blog_prefix = (int) $_blog_id;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the list of global groups.
|
||
|
|
*
|
||
|
|
* @param array $groups List of groups that are global.
|
||
|
|
*/
|
||
|
|
public function add_global_groups( $groups ) {
|
||
|
|
$groups = (array) $groups;
|
||
|
|
|
||
|
|
if ( $this->redis_status() ) {
|
||
|
|
$this->global_groups = array_unique( array_merge( $this->global_groups, $groups ) );
|
||
|
|
} else {
|
||
|
|
$this->ignored_groups = array_unique( array_merge( $this->ignored_groups, $groups ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->cache_group_types();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the list of groups not to be cached by Redis.
|
||
|
|
*
|
||
|
|
* @param array $groups List of groups that are to be ignored.
|
||
|
|
*/
|
||
|
|
public function add_non_persistent_groups( $groups ) {
|
||
|
|
/**
|
||
|
|
* Filters list of groups to be added to {@see self::$ignored_groups}
|
||
|
|
*
|
||
|
|
* @since 2.1.7
|
||
|
|
* @param string[] $groups List of groups to be ignored.
|
||
|
|
*/
|
||
|
|
$groups = apply_filters( 'redis_cache_add_non_persistent_groups', (array) $groups );
|
||
|
|
|
||
|
|
$this->ignored_groups = array_unique( array_merge( $this->ignored_groups, $groups ) );
|
||
|
|
$this->cache_group_types();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the list of groups not to flushed cached.
|
||
|
|
*
|
||
|
|
* @param array $groups List of groups that are unflushable.
|
||
|
|
*/
|
||
|
|
public function add_unflushable_groups( $groups ) {
|
||
|
|
$groups = (array) $groups;
|
||
|
|
|
||
|
|
$this->unflushable_groups = array_unique( array_merge( $this->unflushable_groups, $groups ) );
|
||
|
|
$this->cache_group_types();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Wrapper to validate the cache keys expiration value
|
||
|
|
*
|
||
|
|
* @param mixed $expiration Incoming expiration value (whatever it is).
|
||
|
|
*/
|
||
|
|
protected function validate_expiration( $expiration ) {
|
||
|
|
$expiration = is_int( $expiration ) || ctype_digit( (string) $expiration ) ? (int) $expiration : 0;
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_MAXTTL' ) ) {
|
||
|
|
$max = (int) WP_REDIS_MAXTTL;
|
||
|
|
|
||
|
|
if ( $expiration === 0 || $expiration > $max ) {
|
||
|
|
$expiration = $max;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $expiration;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Unserialize value only if it was serialized.
|
||
|
|
*
|
||
|
|
* @param string $original Maybe unserialized original, if is needed.
|
||
|
|
* @return mixed Unserialized data can be any type.
|
||
|
|
*/
|
||
|
|
protected function maybe_unserialize( $original ) {
|
||
|
|
if ( defined( 'WP_REDIS_SERIALIZER' ) && ! empty( WP_REDIS_SERIALIZER ) ) {
|
||
|
|
return $original;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_IGBINARY' ) && WP_REDIS_IGBINARY && function_exists( 'igbinary_unserialize' ) ) {
|
||
|
|
return igbinary_unserialize( $original );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Don't attempt to unserialize data that wasn't serialized going in.
|
||
|
|
if ( $this->is_serialized( $original ) ) {
|
||
|
|
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged, WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize
|
||
|
|
$value = @unserialize( $original );
|
||
|
|
|
||
|
|
return is_object( $value ) ? clone $value : $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $original;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Serialize data, if needed.
|
||
|
|
*
|
||
|
|
* @param mixed $data Data that might be serialized.
|
||
|
|
* @return mixed A scalar data
|
||
|
|
*/
|
||
|
|
protected function maybe_serialize( $data ) {
|
||
|
|
if ( is_object( $data ) ) {
|
||
|
|
$data = clone $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_SERIALIZER' ) && ! empty( WP_REDIS_SERIALIZER ) ) {
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( defined( 'WP_REDIS_IGBINARY' ) && WP_REDIS_IGBINARY && function_exists( 'igbinary_serialize' ) ) {
|
||
|
|
return igbinary_serialize( $data );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( is_array( $data ) || is_object( $data ) ) {
|
||
|
|
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize
|
||
|
|
return serialize( $data );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $this->is_serialized( $data, false ) ) {
|
||
|
|
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize
|
||
|
|
return serialize( $data );
|
||
|
|
}
|
||
|
|
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check value to find if it was serialized.
|
||
|
|
*
|
||
|
|
* If $data is not an string, then returned value will always be false.
|
||
|
|
* Serialized data is always a string.
|
||
|
|
*
|
||
|
|
* @param string $data Value to check to see if was serialized.
|
||
|
|
* @param bool $strict Optional. Whether to be strict about the end of the string. Default true.
|
||
|
|
* @return bool False if not serialized and true if it was.
|
||
|
|
*/
|
||
|
|
protected function is_serialized( $data, $strict = true ) {
|
||
|
|
// if it isn't a string, it isn't serialized.
|
||
|
|
if ( ! is_string( $data ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$data = trim( $data );
|
||
|
|
|
||
|
|
if ( 'N;' === $data ) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( strlen( $data ) < 4 ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ':' !== $data[1] ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( $strict ) {
|
||
|
|
$lastc = substr( $data, -1 );
|
||
|
|
|
||
|
|
if ( ';' !== $lastc && '}' !== $lastc ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$semicolon = strpos( $data, ';' );
|
||
|
|
$brace = strpos( $data, '}' );
|
||
|
|
|
||
|
|
// Either ; or } must exist.
|
||
|
|
if ( false === $semicolon && false === $brace ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// But neither must be in the first X characters.
|
||
|
|
if ( false !== $semicolon && $semicolon < 3 ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( false !== $brace && $brace < 4 ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$token = $data[0];
|
||
|
|
|
||
|
|
switch ( $token ) {
|
||
|
|
case 's':
|
||
|
|
if ( $strict ) {
|
||
|
|
if ( '"' !== substr( $data, -2, 1 ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} elseif ( false === strpos( $data, '"' ) ) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// Or else fall through.
|
||
|
|
// No break!
|
||
|
|
case 'a':
|
||
|
|
case 'O':
|
||
|
|
return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data );
|
||
|
|
case 'b':
|
||
|
|
case 'i':
|
||
|
|
case 'd':
|
||
|
|
$end = $strict ? '$' : '';
|
||
|
|
|
||
|
|
return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data );
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Handle the redis failure gracefully or throw an exception.
|
||
|
|
*
|
||
|
|
* @param \Exception $exception Exception thrown.
|
||
|
|
* @throws \Exception If `fail_gracefully` flag is set to a falsy value.
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function handle_exception( $exception ) {
|
||
|
|
$this->redis_connected = false;
|
||
|
|
|
||
|
|
// When Redis is unavailable, fall back to the internal cache by forcing all groups to be "no redis" groups.
|
||
|
|
$this->ignored_groups = array_unique( array_merge( $this->ignored_groups, $this->global_groups ) );
|
||
|
|
|
||
|
|
error_log( $exception ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
|
||
|
|
|
||
|
|
if ( ! $this->fail_gracefully ) {
|
||
|
|
$this->show_error_and_die( $exception );
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->errors[] = $exception->getMessage();
|
||
|
|
|
||
|
|
if ( function_exists( 'do_action' ) ) {
|
||
|
|
/**
|
||
|
|
* Fires on every cache error
|
||
|
|
*
|
||
|
|
* @since 1.5.0
|
||
|
|
* @param \Exception $exception The exception triggered.
|
||
|
|
*/
|
||
|
|
do_action( 'redis_object_cache_error', $exception );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Show Redis connection error screen, or load custom `/redis-error.php`.
|
||
|
|
*
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function show_error_and_die( Exception $exception ) {
|
||
|
|
wp_load_translations_early();
|
||
|
|
|
||
|
|
add_filter( 'pre_determine_locale', function () {
|
||
|
|
return defined( 'WPLANG' ) ? WPLANG : 'en_US';
|
||
|
|
} );
|
||
|
|
|
||
|
|
// Load custom DB error template, if present.
|
||
|
|
if ( file_exists( WP_CONTENT_DIR . '/redis-error.php' ) ) {
|
||
|
|
require_once WP_CONTENT_DIR . '/redis-error.php';
|
||
|
|
die();
|
||
|
|
}
|
||
|
|
|
||
|
|
$verbose = wp_installing()
|
||
|
|
|| defined( 'WP_ADMIN' )
|
||
|
|
|| ( defined( 'WP_DEBUG' ) && WP_DEBUG );
|
||
|
|
|
||
|
|
$message = '<h1>' . __( 'Error establishing a Redis connection', 'redis-cache' ) . "</h1>\n";
|
||
|
|
|
||
|
|
if ( $verbose ) {
|
||
|
|
$message .= "<p><code>" . $exception->getMessage() . "</code></p>\n";
|
||
|
|
|
||
|
|
$message .= '<p>' . sprintf(
|
||
|
|
// translators: %s = Formatted wp-config.php file name.
|
||
|
|
__( 'WordPress is unable to establish a connection to Redis. This means that the connection information in your %s file are incorrect, or that the Redis server is not reachable.', 'redis-cache' ),
|
||
|
|
'<code>wp-config.php</code>'
|
||
|
|
) . "</p>\n";
|
||
|
|
|
||
|
|
$message .= "<ul>\n";
|
||
|
|
$message .= '<li>' . __( 'Is the correct Redis host and port set?', 'redis-cache' ) . "</li>\n";
|
||
|
|
$message .= '<li>' . __( 'Is the Redis server running?', 'redis-cache' ) . "</li>\n";
|
||
|
|
$message .= "</ul>\n";
|
||
|
|
|
||
|
|
$message .= '<p>' . sprintf(
|
||
|
|
// translators: %s = Link to installation instructions.
|
||
|
|
__( 'If you need help, please read the <a href="%s">installation instructions</a>.', 'redis-cache' ),
|
||
|
|
'https://github.com/rhubarbgroup/redis-cache/blob/develop/INSTALL.md'
|
||
|
|
) . "</p>\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
$message .= '<p>' . sprintf(
|
||
|
|
// translators: %1$s = Formatted object-cache.php file name, %2$s = Formatted wp-content directory name.
|
||
|
|
__( 'To disable Redis, delete the %1$s file in the %2$s directory.', 'redis-cache' ),
|
||
|
|
'<code>object-cache.php</code>',
|
||
|
|
'<code>/wp-content/</code>'
|
||
|
|
) . "</p>\n";
|
||
|
|
|
||
|
|
wp_die( $message );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Builds a clean connection array out of redis clusters array.
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected function build_cluster_connection_array() {
|
||
|
|
$cluster = array_values( WP_REDIS_CLUSTER );
|
||
|
|
|
||
|
|
foreach ( $cluster as $key => $server ) {
|
||
|
|
$connection_string = parse_url( $server );
|
||
|
|
|
||
|
|
$cluster[ $key ] = sprintf(
|
||
|
|
"%s:%s",
|
||
|
|
$connection_string['host'],
|
||
|
|
$connection_string['port']
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $cluster;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check whether Predis client is in use.
|
||
|
|
*
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
protected function is_predis() {
|
||
|
|
return $this->redis instanceof Predis\Client;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Allows access to private properties for backwards compatibility.
|
||
|
|
*
|
||
|
|
* @param string $name Name of the property.
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
public function __get( $name ) {
|
||
|
|
return isset( $this->{$name} ) ? $this->{$name} : null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
endif;
|
||
|
|
// phpcs:enable Generic.WhiteSpace.ScopeIndent.IncorrectExact, Generic.WhiteSpace.ScopeIndent.Incorrect
|