| @@ -1,459 +1,1211 @@ | ||
| 1 | 1 | <?php |
| 2 | +/** | |
| 3 | + * Upstream: https://github.com/poweredcache/wp-memcached | |
| 4 | + * Upstream version: 92d60df2dabac6a70b863a54d95602a0424fe391 | |
| 5 | + */ | |
| 2 | 6 | defined( 'ABSPATH' ) || exit; |
| 3 | 7 | |
| 4 | 8 | // We need Memcache to continue |
| 5 | 9 | if ( class_exists( 'Memcache' ) ): |
| 6 | 10 | |
| 7 | -/** | |
| 8 | - * Copyright (C) 2016 Ryan Boren, Denis de Bernardy, Matt Martz | |
| 9 | - */ | |
| 10 | 11 | |
| 11 | -if ( ! defined( 'WP_CACHE_KEY_SALT' ) ) { | |
| 12 | - define( 'WP_CACHE_KEY_SALT', DB_NAME ); | |
| 13 | -} | |
| 12 | + // Users with setups where multiple installs share a common wp-config.php or $table_prefix | |
| 13 | + // can use this to guarantee uniqueness for the keys generated by this object cache | |
| 14 | + if ( ! defined( 'WP_CACHE_KEY_SALT' ) ) { | |
| 15 | + define( 'WP_CACHE_KEY_SALT', '' ); | |
| 16 | + } | |
| 14 | 17 | |
| 15 | -function wp_cache_add( $key, $data, $group = '', $expire = 0 ) { | |
| 18 | + function wp_cache_add( $key, $data, $group = '', $expire = 0 ) { | |
| 19 | + global $wp_object_cache; | |
| 16 | 20 | |
| 17 | - global $wp_object_cache; | |
| 21 | + return $wp_object_cache->add( $key, $data, $group, $expire ); | |
| 22 | + } | |
| 18 | 23 | |
| 19 | - return $wp_object_cache->add( $key, $data, $group, $expire ); | |
| 20 | -} | |
| 24 | + function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) { | |
| 25 | + global $wp_object_cache; | |
| 21 | 26 | |
| 22 | -function wp_cache_incr( $key, $n = 1, $group = '' ) { | |
| 27 | + return $wp_object_cache->add_multiple( $data, $group, $expire ); | |
| 28 | + } | |
| 23 | 29 | |
| 24 | - global $wp_object_cache; | |
| 30 | + function wp_cache_incr( $key, $n = 1, $group = '' ) { | |
| 31 | + global $wp_object_cache; | |
| 25 | 32 | |
| 26 | - return $wp_object_cache->incr( $key, $n, $group ); | |
| 27 | -} | |
| 33 | + return $wp_object_cache->incr( $key, $n, $group ); | |
| 34 | + } | |
| 28 | 35 | |
| 29 | -function wp_cache_decr( $key, $n = 1, $group = '' ) { | |
| 36 | + function wp_cache_decr( $key, $n = 1, $group = '' ) { | |
| 37 | + global $wp_object_cache; | |
| 30 | 38 | |
| 31 | - global $wp_object_cache; | |
| 39 | + return $wp_object_cache->decr( $key, $n, $group ); | |
| 40 | + } | |
| 32 | 41 | |
| 33 | - return $wp_object_cache->decr( $key, $n, $group ); | |
| 34 | -} | |
| 42 | + function wp_cache_close() { | |
| 43 | + global $wp_object_cache; | |
| 35 | 44 | |
| 36 | -function wp_cache_close() { | |
| 45 | + return $wp_object_cache->close(); | |
| 46 | + } | |
| 37 | 47 | |
| 38 | - global $wp_object_cache; | |
| 48 | + function wp_cache_delete( $key, $group = '' ) { | |
| 49 | + global $wp_object_cache; | |
| 39 | 50 | |
| 40 | - return $wp_object_cache->close(); | |
| 41 | -} | |
| 51 | + return $wp_object_cache->delete( $key, $group ); | |
| 52 | + } | |
| 42 | 53 | |
| 43 | -function wp_cache_delete( $key, $group = '' ) { | |
| 54 | + function wp_cache_delete_multiple( array $keys, $group = '' ) { | |
| 55 | + global $wp_object_cache; | |
| 44 | 56 | |
| 45 | - global $wp_object_cache; | |
| 57 | + return $wp_object_cache->delete_multiple( $keys, $group ); | |
| 58 | + } | |
| 46 | 59 | |
| 47 | - return $wp_object_cache->delete( $key, $group ); | |
| 48 | -} | |
| 60 | + function wp_cache_flush() { | |
| 61 | + global $wp_object_cache; | |
| 49 | 62 | |
| 50 | -function wp_cache_flush() { | |
| 63 | + return $wp_object_cache->flush(); | |
| 64 | + } | |
| 51 | 65 | |
| 52 | - global $wp_object_cache; | |
| 66 | + function wp_cache_flush_runtime() { | |
| 67 | + global $wp_object_cache; | |
| 53 | 68 | |
| 54 | - return $wp_object_cache->flush(); | |
| 55 | -} | |
| 69 | + return $wp_object_cache->flush_runtime(); | |
| 70 | + } | |
| 56 | 71 | |
| 57 | -function wp_cache_get( $key, $group = '', $force = false ) { | |
| 72 | + function wp_cache_get( $key, $group = '', $force = false, &$found = null ) { | |
| 73 | + global $wp_object_cache; | |
| 58 | 74 | |
| 59 | - global $wp_object_cache; | |
| 75 | + if ( function_exists( 'apply_filters' ) ) { | |
| 76 | + $value = apply_filters( 'pre_wp_cache_get', false, $key, $group, $force ); | |
| 77 | + if ( false !== $value ) { | |
| 78 | + $found = true; | |
| 79 | + return $value; | |
| 80 | + } | |
| 81 | + } | |
| 60 | 82 | |
| 61 | - return $wp_object_cache->get( $key, $group, $force ); | |
| 62 | -} | |
| 83 | + return $wp_object_cache->get( $key, $group, $force, $found ); | |
| 84 | + } | |
| 63 | 85 | |
| 64 | -function wp_cache_init() { | |
| 86 | + function wp_cache_get_multiple( $keys, $group = '', $force = false ) { | |
| 87 | + global $wp_object_cache; | |
| 65 | 88 | |
| 66 | - global $wp_object_cache; | |
| 89 | + return $wp_object_cache->get_multiple( $keys, $group, $force ); | |
| 90 | + } | |
| 67 | 91 | |
| 68 | - $wp_object_cache = new WP_Object_Cache(); | |
| 69 | -} | |
| 92 | + /** | |
| 93 | + * Retrieve multiple cache entries | |
| 94 | + * | |
| 95 | + * @param array $groups Array of arrays, of groups and keys to retrieve | |
| 96 | + * @return mixed | |
| 97 | + */ | |
| 98 | + function wp_cache_get_multi( $groups ) { | |
| 99 | + global $wp_object_cache; | |
| 70 | 100 | |
| 71 | -function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) { | |
| 101 | + return $wp_object_cache->get_multi( $groups ); | |
| 102 | + } | |
| 72 | 103 | |
| 73 | - global $wp_object_cache; | |
| 104 | + function wp_cache_init() { | |
| 105 | + global $wp_object_cache; | |
| 74 | 106 | |
| 75 | - return $wp_object_cache->replace( $key, $data, $group, $expire ); | |
| 76 | -} | |
| 107 | + $wp_object_cache = new WP_Object_Cache(); | |
| 108 | + } | |
| 77 | 109 | |
| 78 | -function wp_cache_set( $key, $data, $group = '', $expire = 0 ) { | |
| 110 | + function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) { | |
| 111 | + global $wp_object_cache; | |
| 79 | 112 | |
| 80 | - global $wp_object_cache; | |
| 113 | + return $wp_object_cache->replace( $key, $data, $group, $expire ); | |
| 114 | + } | |
| 81 | 115 | |
| 82 | - if ( defined( 'WP_INSTALLING' ) == false ) { | |
| 83 | - return $wp_object_cache->set( $key, $data, $group, $expire ); | |
| 84 | - } else { | |
| 85 | - return $wp_object_cache->delete( $key, $group ); | |
| 116 | + function wp_cache_set( $key, $data, $group = '', $expire = 0 ) { | |
| 117 | + global $wp_object_cache; | |
| 118 | + | |
| 119 | + if ( defined( 'WP_INSTALLING' ) === false ) { | |
| 120 | + return $wp_object_cache->set( $key, $data, $group, $expire ); | |
| 121 | + } else { | |
| 122 | + return $wp_object_cache->delete( $key, $group ); | |
| 123 | + } | |
| 86 | 124 | } |
| 87 | -} | |
| 88 | 125 | |
| 89 | -function wp_cache_switch_to_blog( $blog_id ) { | |
| 126 | + function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) { | |
| 127 | + global $wp_object_cache; | |
| 90 | 128 | |
| 91 | - global $wp_object_cache; | |
| 129 | + return $wp_object_cache->set_multiple( $data, $group, $expire ); | |
| 130 | + } | |
| 92 | 131 | |
| 93 | - return $wp_object_cache->switch_to_blog( $blog_id ); | |
| 94 | -} | |
| 132 | + function wp_cache_switch_to_blog( $blog_id ) { | |
| 133 | + global $wp_object_cache; | |
| 95 | 134 | |
| 96 | -function wp_cache_add_global_groups( $groups ) { | |
| 135 | + return $wp_object_cache->switch_to_blog( $blog_id ); | |
| 136 | + } | |
| 97 | 137 | |
| 98 | - global $wp_object_cache; | |
| 138 | + function wp_cache_add_global_groups( $groups ) { | |
| 139 | + global $wp_object_cache; | |
| 99 | 140 | |
| 100 | - $wp_object_cache->add_global_groups( $groups ); | |
| 101 | -} | |
| 141 | + $wp_object_cache->add_global_groups( $groups ); | |
| 142 | + } | |
| 102 | 143 | |
| 103 | -function wp_cache_add_non_persistent_groups( $groups ) { | |
| 144 | + function wp_cache_add_non_persistent_groups( $groups ) { | |
| 145 | + global $wp_object_cache; | |
| 104 | 146 | |
| 105 | - global $wp_object_cache; | |
| 147 | + $wp_object_cache->add_non_persistent_groups( $groups ); | |
| 148 | + } | |
| 106 | 149 | |
| 107 | - $wp_object_cache->add_non_persistent_groups( $groups ); | |
| 108 | -} | |
| 150 | + /** | |
| 151 | + * Determines whether the object cache implementation supports a particular feature. | |
| 152 | + * | |
| 153 | + * @param string $feature Name of the feature to check for. Possible values include: | |
| 154 | + * 'add_multiple', 'set_multiple', 'get_multiple', 'delete_multiple', | |
| 155 | + * 'flush_runtime', 'flush_group'. | |
| 156 | + * @return bool True if the feature is supported, false otherwise. | |
| 157 | + */ | |
| 158 | + function wp_cache_supports( $feature ) { | |
| 159 | + switch ( $feature ) { | |
| 160 | + case 'get_multiple': | |
| 161 | + case 'flush_runtime': | |
| 162 | + return true; | |
| 109 | 163 | |
| 110 | -class WP_Object_Cache { | |
| 111 | - var $global_groups = array(); | |
| 164 | + default: | |
| 165 | + return false; | |
| 166 | + } | |
| 167 | + } | |
| 112 | 168 | |
| 113 | - var $no_mc_groups = array(); | |
| 169 | + class WP_Object_Cache { | |
| 170 | + var $global_groups = array( 'WP_Object_Cache_global' ); | |
| 114 | 171 | |
| 115 | - var $cache = array(); | |
| 116 | - var $mc = array(); | |
| 117 | - var $stats = array(); | |
| 118 | - var $group_ops = array(); | |
| 172 | + var $no_mc_groups = array(); | |
| 119 | 173 | |
| 120 | - var $cache_enabled = true; | |
| 121 | - var $default_expiration = 0; | |
| 174 | + var $cache = array(); | |
| 175 | + /** @var Memcache[] */ | |
| 176 | + var $mc = array(); | |
| 177 | + var $default_mcs = array(); | |
| 178 | + var $stats = array( | |
| 179 | + 'get' => 0, | |
| 180 | + 'get_local' => 0, | |
| 181 | + 'get_multi' => 0, | |
| 182 | + 'set' => 0, | |
| 183 | + 'set_local' => 0, | |
| 184 | + 'add' => 0, | |
| 185 | + 'delete' => 0, | |
| 186 | + 'delete_local' => 0, | |
| 187 | + 'slow-ops' => 0, | |
| 188 | + ); | |
| 189 | + var $group_ops = array(); | |
| 190 | + var $cache_hits = 0; | |
| 191 | + var $cache_misses = 0; | |
| 192 | + var $global_prefix = ''; | |
| 193 | + var $blog_prefix = ''; | |
| 194 | + var $key_salt = ''; | |
| 122 | 195 | |
| 123 | - function add( $id, $data, $group = 'default', $expire = 0 ) { | |
| 196 | + var $flush_group = 'WP_Object_Cache'; | |
| 197 | + var $global_flush_group = 'WP_Object_Cache_global'; | |
| 198 | + var $flush_key = "flush_number_v4"; | |
| 199 | + var $old_flush_key = "flush_number"; | |
| 200 | + var $flush_number = array(); | |
| 201 | + var $global_flush_number = null; | |
| 124 | 202 | |
| 125 | - $key = $this->key( $id, $group ); | |
| 203 | + var $cache_enabled = true; | |
| 204 | + var $default_expiration = 0; | |
| 205 | + var $max_expiration = 2592000; // 30 days | |
| 126 | 206 | |
| 127 | - if ( is_object( $data ) ) { | |
| 128 | - $data = clone $data; | |
| 207 | + var $stats_callback = null; | |
| 208 | + | |
| 209 | + var $connection_errors = array(); | |
| 210 | + | |
| 211 | + var $time_start = 0; | |
| 212 | + var $time_total = 0; | |
| 213 | + var $size_total = 0; | |
| 214 | + var $slow_op_microseconds = 0.005; // 5 ms | |
| 215 | + | |
| 216 | + function add( $id, $data, $group = 'default', $expire = 0 ) { | |
| 217 | + $key = $this->key( $id, $group ); | |
| 218 | + | |
| 219 | + if ( is_object( $data ) ) { | |
| 220 | + $data = clone $data; | |
| 221 | + } | |
| 222 | + | |
| 223 | + if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 224 | + if ( ! isset( $this->cache[ $key ] ) ) { | |
| 225 | + $this->cache[ $key ] = [ | |
| 226 | + 'value' => $data, | |
| 227 | + 'found' => false, | |
| 228 | + ]; | |
| 229 | + | |
| 230 | + return true; | |
| 231 | + } | |
| 232 | + | |
| 233 | + return false; | |
| 234 | + } | |
| 235 | + | |
| 236 | + if ( isset( $this->cache[ $key ][ 'value' ] ) && false !== $this->cache[ $key ][ 'value' ] ) { | |
| 237 | + return false; | |
| 238 | + } | |
| 239 | + | |
| 240 | + $mc = $this->get_mc( $group ); | |
| 241 | + | |
| 242 | + $expire = intval( $expire ); | |
| 243 | + if ( 0 === $expire || $expire > $this->max_expiration ) { | |
| 244 | + $expire = $this->default_expiration; | |
| 245 | + } | |
| 246 | + | |
| 247 | + $size = $this->get_data_size( $data ); | |
| 248 | + $this->timer_start(); | |
| 249 | + $result = $mc->add( $key, $data, false, $expire ); | |
| 250 | + $elapsed = $this->timer_stop(); | |
| 251 | + | |
| 252 | + $comment = ''; | |
| 253 | + if ( isset( $this->cache[ $key ] ) ) { | |
| 254 | + $comment .= ' [lc already]'; | |
| 255 | + } | |
| 256 | + if ( false === $result ) { | |
| 257 | + $comment .= ' [mc already]'; | |
| 258 | + } | |
| 259 | + | |
| 260 | + $this->group_ops_stats( 'add', $key, $group, $size, $elapsed, $comment ); | |
| 261 | + | |
| 262 | + if ( false !== $result ) { | |
| 263 | + $this->cache[ $key ] = [ | |
| 264 | + 'value' => $data, | |
| 265 | + 'found' => true, | |
| 266 | + ]; | |
| 267 | + } else if ( false === $result && true === isset( $this->cache[$key][ 'value' ] ) && false === $this->cache[$key][ 'value' ] ) { | |
| 268 | + /* | |
| 269 | + * Here we unset local cache if remote add failed and local cache value is equal to `false` in order | |
| 270 | + * to update the local cache anytime we get a new information from remote server. This way, the next | |
| 271 | + * cache get will go to remote server and will fetch recent data. | |
| 272 | + */ | |
| 273 | + unset( $this->cache[$key] ); | |
| 274 | + } | |
| 275 | + | |
| 276 | + return $result; | |
| 129 | 277 | } |
| 130 | 278 | |
| 131 | - if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 132 | - $this->cache[ $key ] = $data; | |
| 133 | - return true; | |
| 134 | - } elseif ( isset( $this->cache[ $key ] ) && $this->cache[ $key ] !== false ) { | |
| 135 | - return false; | |
| 279 | + public function add_multiple( array $data, $group = '', $expire = 0 ) { | |
| 280 | + $values = array(); | |
| 281 | + | |
| 282 | + foreach ( $data as $key => $value ) { | |
| 283 | + $values[ $key ] = $this->add( $key, $value, $group, $expire ); | |
| 284 | + } | |
| 285 | + | |
| 286 | + return $values; | |
| 136 | 287 | } |
| 137 | 288 | |
| 138 | - $mc =& $this->get_mc( $group ); | |
| 139 | - $expire = ($expire == 0) ? $this->default_expiration : $expire; | |
| 140 | - $result = $mc->add( $key, $data, false, $expire ); | |
| 289 | + function add_global_groups( $groups ) { | |
| 290 | + if ( ! is_array( $groups ) ) { | |
| 291 | + $groups = (array) $groups; | |
| 292 | + } | |
| 141 | 293 | |
| 142 | - if ( false !== $result ) { | |
| 143 | - @ ++$this->stats['add']; | |
| 144 | - $this->group_ops[ $group ][] = "add $id"; | |
| 145 | - $this->cache[ $key ] = $data; | |
| 294 | + $this->global_groups = array_merge( $this->global_groups, $groups ); | |
| 295 | + $this->global_groups = array_unique( $this->global_groups ); | |
| 146 | 296 | } |
| 147 | 297 | |
| 148 | - return $result; | |
| 149 | - } | |
| 298 | + function add_non_persistent_groups( $groups ) { | |
| 299 | + if ( ! is_array( $groups ) ) { | |
| 300 | + $groups = (array) $groups; | |
| 301 | + } | |
| 150 | 302 | |
| 151 | - function add_global_groups( $groups ) { | |
| 303 | + $this->no_mc_groups = array_merge( $this->no_mc_groups, $groups ); | |
| 304 | + $this->no_mc_groups = array_unique( $this->no_mc_groups ); | |
| 305 | + } | |
| 152 | 306 | |
| 153 | - if ( ! is_array( $groups ) ) { | |
| 154 | - $groups = (array) $groups; | |
| 307 | + function incr( $id, $n = 1, $group = 'default' ) { | |
| 308 | + $key = $this->key( $id, $group ); | |
| 309 | + $mc = $this->get_mc( $group ); | |
| 310 | + | |
| 311 | + $incremented = $mc->increment( $key, $n ); | |
| 312 | + | |
| 313 | + $this->cache[ $key ] = [ | |
| 314 | + 'value' => $incremented, | |
| 315 | + 'found' => false !== $incremented, | |
| 316 | + ]; | |
| 317 | + | |
| 318 | + return $this->cache[ $key ][ 'value' ]; | |
| 155 | 319 | } |
| 156 | 320 | |
| 157 | - $this->global_groups = array_merge( $this->global_groups, $groups ); | |
| 158 | - $this->global_groups = array_unique( $this->global_groups ); | |
| 159 | - } | |
| 321 | + function decr( $id, $n = 1, $group = 'default' ) { | |
| 322 | + $key = $this->key( $id, $group ); | |
| 323 | + $mc = $this->get_mc( $group ); | |
| 160 | 324 | |
| 161 | - function add_non_persistent_groups( $groups ) { | |
| 325 | + $decremented = $mc->decrement( $key, $n ); | |
| 326 | + $this->cache[ $key ] = [ | |
| 327 | + 'value' => $decremented, | |
| 328 | + 'found' => false !== $decremented, | |
| 329 | + ]; | |
| 162 | 330 | |
| 163 | - if ( ! is_array( $groups ) ) { | |
| 164 | - $groups = (array) $groups; | |
| 331 | + return $this->cache[ $key ][ 'value' ]; | |
| 165 | 332 | } |
| 166 | 333 | |
| 167 | - $this->no_mc_groups = array_merge( $this->no_mc_groups, $groups ); | |
| 168 | - $this->no_mc_groups = array_unique( $this->no_mc_groups ); | |
| 169 | - } | |
| 334 | + function close() { | |
| 335 | + foreach ( $this->mc as $bucket => $mc ) { | |
| 336 | + $mc->close(); | |
| 337 | + } | |
| 338 | + } | |
| 170 | 339 | |
| 171 | - function incr( $id, $n = 1, $group = 'default' ) { | |
| 340 | + function delete( $id, $group = 'default' ) { | |
| 341 | + $key = $this->key( $id, $group ); | |
| 172 | 342 | |
| 173 | - $key = $this->key( $id, $group ); | |
| 174 | - $mc =& $this->get_mc( $group ); | |
| 175 | - $this->cache[ $key ] = $mc->increment( $key, $n ); | |
| 176 | - return $this->cache[ $key ]; | |
| 177 | - } | |
| 343 | + if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 344 | + unset( $this->cache[ $key ] ); | |
| 178 | 345 | |
| 179 | - function decr( $id, $n = 1, $group = 'default' ) { | |
| 346 | + return true; | |
| 347 | + } | |
| 180 | 348 | |
| 181 | - $key = $this->key( $id, $group ); | |
| 182 | - $mc =& $this->get_mc( $group ); | |
| 183 | - $this->cache[ $key ] = $mc->decrement( $key, $n ); | |
| 184 | - return $this->cache[ $key ]; | |
| 185 | - } | |
| 349 | + $mc = $this->get_mc( $group ); | |
| 186 | 350 | |
| 187 | - function close() { | |
| 351 | + $this->timer_start(); | |
| 352 | + $result = $mc->delete( $key ); | |
| 353 | + $elapsed = $this->timer_stop(); | |
| 188 | 354 | |
| 189 | - foreach ( $this->mc as $bucket => $mc ) { | |
| 190 | - $mc->close(); | |
| 355 | + $this->group_ops_stats( 'delete', $key, $group, null, $elapsed ); | |
| 356 | + | |
| 357 | + if ( false !== $result ) { | |
| 358 | + unset( $this->cache[ $key ] ); | |
| 359 | + } | |
| 360 | + | |
| 361 | + return $result; | |
| 191 | 362 | } |
| 192 | - } | |
| 193 | 363 | |
| 194 | - function delete( $id, $group = 'default' ) { | |
| 364 | + public function delete_multiple( array $keys, $group = '' ) { | |
| 365 | + $values = array(); | |
| 195 | 366 | |
| 196 | - $key = $this->key( $id, $group ); | |
| 367 | + foreach ( $keys as $key ) { | |
| 368 | + $values[ $key ] = $this->delete( $key, $group ); | |
| 369 | + } | |
| 197 | 370 | |
| 198 | - if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 199 | - unset( $this->cache[ $key ] ); | |
| 371 | + return $values; | |
| 372 | + } | |
| 373 | + | |
| 374 | + // Gets number from all default servers, replicating if needed | |
| 375 | + function get_max_flush_number( $group ) { | |
| 376 | + $key = $this->key( $this->flush_key, $group ); | |
| 377 | + | |
| 378 | + $values = array(); | |
| 379 | + $size = 19; // size of microsecond timestamp serialized | |
| 380 | + foreach ( $this->default_mcs as $i => $mc ) { | |
| 381 | + $flags = false; | |
| 382 | + $this->timer_start(); | |
| 383 | + $values[ $i ] = $mc->get( $key, $flags ); | |
| 384 | + $elapsed = $this->timer_stop(); | |
| 385 | + | |
| 386 | + if ( empty( $values[ $i ] ) ) { | |
| 387 | + $this->group_ops_stats( 'get_flush_number', $key, $group, null, $elapsed, 'not_in_memcache' ); | |
| 388 | + } else { | |
| 389 | + $this->group_ops_stats( 'get_flush_number', $key, $group, $size, $elapsed, 'memcache' ); | |
| 390 | + } | |
| 391 | + } | |
| 392 | + | |
| 393 | + $max = max( $values ); | |
| 394 | + | |
| 395 | + if ( ! $max > 0 ) { | |
| 396 | + return false; | |
| 397 | + } | |
| 398 | + | |
| 399 | + // Replicate to servers not having the max. | |
| 400 | + $expire = 0; | |
| 401 | + foreach ( $this->default_mcs as $i => $mc ) { | |
| 402 | + if ( $values[ $i ] < $max ) { | |
| 403 | + $this->timer_start(); | |
| 404 | + $mc->set( $key, $max, false, $expire ); | |
| 405 | + $elapsed = $this->timer_stop(); | |
| 406 | + $this->group_ops_stats( 'set_flush_number', $key, $group, $size, $elapsed, 'replication_repair' ); | |
| 407 | + } | |
| 408 | + } | |
| 409 | + | |
| 410 | + return $max; | |
| 411 | + } | |
| 412 | + | |
| 413 | + function set_flush_number( $value, $group ) { | |
| 414 | + $key = $this->key( $this->flush_key, $group ); | |
| 415 | + $expire = 0; | |
| 416 | + $size = 19; | |
| 417 | + foreach ( $this->default_mcs as $i => $mc ) { | |
| 418 | + $this->timer_start(); | |
| 419 | + $mc->set( $key, $value, false, $expire ); | |
| 420 | + $elapsed = $this->timer_stop(); | |
| 421 | + $this->group_ops_stats( 'set_flush_number', $key, $group, $size, $elapsed, 'replication' ); | |
| 422 | + } | |
| 423 | + } | |
| 424 | + | |
| 425 | + function get_flush_number( $group ) { | |
| 426 | + $flush_number = $this->get_max_flush_number( $group ); | |
| 427 | + // What if there is no v4 flush number? | |
| 428 | + if ( empty( $flush_number ) ) { | |
| 429 | + // Look for the v3 flush number key. | |
| 430 | + $flush_number = intval( $this->get( $this->old_flush_key, $group ) ); | |
| 431 | + if ( !empty( $flush_number ) ) { | |
| 432 | + // Found v3 flush number. Upgrade to v4 with replication. | |
| 433 | + $this->set_flush_number( $flush_number, $group ); | |
| 434 | + // Delete v3 key so we can't later restore it and find stale keys. | |
| 435 | + } else { | |
| 436 | + // No flush number found anywhere. Make a new one. This flushes the cache. | |
| 437 | + $flush_number = $this->new_flush_number(); | |
| 438 | + $this->set_flush_number( $flush_number, $group ); | |
| 439 | + } | |
| 440 | + } | |
| 441 | + | |
| 442 | + return $flush_number; | |
| 443 | + } | |
| 444 | + | |
| 445 | + function get_global_flush_number() { | |
| 446 | + if ( ! isset( $this->global_flush_number ) ) { | |
| 447 | + $this->global_flush_number = $this->get_flush_number( $this->global_flush_group ); | |
| 448 | + } | |
| 449 | + return $this->global_flush_number; | |
| 450 | + } | |
| 451 | + | |
| 452 | + function get_blog_flush_number() { | |
| 453 | + if ( ! isset( $this->flush_number[ $this->blog_prefix ] ) ) { | |
| 454 | + $this->flush_number[ $this->blog_prefix ] = $this->get_flush_number( $this->flush_group ); | |
| 455 | + } | |
| 456 | + return $this->flush_number[ $this->blog_prefix ]; | |
| 457 | + } | |
| 458 | + | |
| 459 | + function flush_runtime() { | |
| 460 | + $this->cache = array(); | |
| 461 | + $this->group_ops = array(); | |
| 462 | + | |
| 200 | 463 | return true; |
| 201 | 464 | } |
| 202 | 465 | |
| 203 | - $mc =& $this->get_mc( $group ); | |
| 466 | + function flush() { | |
| 467 | + // Do not use the memcached flush method. It acts on an | |
| 468 | + // entire memcached server, affecting all sites. | |
| 469 | + // Flush is also unusable in some setups, e.g. twemproxy. | |
| 470 | + // Instead, rotate the key prefix for the current site. | |
| 471 | + // Global keys are rotated when flushing on any network's | |
| 472 | + // main site. | |
| 473 | + $this->cache = array(); | |
| 204 | 474 | |
| 205 | - $result = $mc->delete( $key ); | |
| 475 | + $flush_number = $this->new_flush_number(); | |
| 206 | 476 | |
| 207 | - @ ++$this->stats['delete']; | |
| 208 | - $this->group_ops[ $group ][] = "delete $id"; | |
| 477 | + $this->rotate_site_keys( $flush_number ); | |
| 209 | 478 | |
| 210 | - if ( false !== $result ) { | |
| 211 | - unset( $this->cache[ $key ] ); | |
| 479 | + if ( function_exists( 'is_main_site' ) && is_main_site() ) { | |
| 480 | + $this->rotate_global_keys( $flush_number ); | |
| 481 | + } | |
| 482 | + | |
| 483 | + return true; | |
| 212 | 484 | } |
| 213 | 485 | |
| 214 | - return $result; | |
| 215 | - } | |
| 486 | + function rotate_site_keys( $flush_number = null ) { | |
| 487 | + if ( is_null( $flush_number ) ) { | |
| 488 | + $flush_number = $this->new_flush_number(); | |
| 489 | + } | |
| 216 | 490 | |
| 217 | - function flush() { | |
| 218 | - $ret = true; | |
| 219 | - foreach ( array_keys( $this->mc ) as $group ) { | |
| 220 | - $ret &= $this->mc[ $group ]->flush(); | |
| 491 | + $this->set_flush_number( $flush_number, $this->flush_group ); | |
| 492 | + | |
| 493 | + $this->flush_number[ $this->blog_prefix ] = $flush_number; | |
| 221 | 494 | } |
| 222 | - return $ret; | |
| 223 | - } | |
| 224 | 495 | |
| 225 | - function get( $id, $group = 'default', $force = false ) { | |
| 496 | + function rotate_global_keys( $flush_number = null ) { | |
| 497 | + if ( is_null( $flush_number ) ) { | |
| 498 | + $flush_number = $this->new_flush_number(); | |
| 499 | + } | |
| 226 | 500 | |
| 227 | - $key = $this->key( $id, $group ); | |
| 228 | - $mc =& $this->get_mc( $group ); | |
| 501 | + $this->set_flush_number( $flush_number, $this->global_flush_group ); | |
| 229 | 502 | |
| 230 | - if ( isset( $this->cache[ $key ] ) && ( ! $force || in_array( $group, $this->no_mc_groups ) ) ) { | |
| 231 | - if ( is_object( $this->cache[ $key ] ) ) { | |
| 232 | - $value = clone $this->cache[ $key ]; | |
| 503 | + $this->global_flush_number = $flush_number; | |
| 504 | + } | |
| 505 | + | |
| 506 | + function new_flush_number() { | |
| 507 | + return intval( microtime( true ) * 1e6 ); | |
| 508 | + } | |
| 509 | + | |
| 510 | + function get( $id, $group = 'default', $force = false, &$found = null ) { | |
| 511 | + $key = $this->key( $id, $group ); | |
| 512 | + $mc = $this->get_mc( $group ); | |
| 513 | + $found = true; | |
| 514 | + | |
| 515 | + if ( isset( $this->cache[ $key ] ) && ( ! $force || in_array( $group, $this->no_mc_groups ) ) ) { | |
| 516 | + if ( isset( $this->cache[ $key ][ 'value' ] ) && is_object( $this->cache[ $key ][ 'value' ] ) ) { | |
| 517 | + $value = clone $this->cache[ $key ][ 'value' ]; | |
| 518 | + } else { | |
| 519 | + $value = $this->cache[ $key ][ 'value' ]; | |
| 520 | + } | |
| 521 | + $found = $this->cache[ $key ][ 'found' ]; | |
| 522 | + | |
| 523 | + $this->group_ops_stats( 'get_local', $key, $group, null, null, 'local' ); | |
| 524 | + } else if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 525 | + $this->cache[ $key ] = [ | |
| 526 | + 'value' => $value = false, | |
| 527 | + 'found' => false, | |
| 528 | + ]; | |
| 529 | + | |
| 530 | + $found = false; | |
| 531 | + | |
| 532 | + $this->group_ops_stats( 'get_local', $key, $group, null, null, 'not_in_local' ); | |
| 233 | 533 | } else { |
| 234 | - $value = $this->cache[ $key ]; | |
| 534 | + $flags = false; | |
| 535 | + $this->timer_start(); | |
| 536 | + $value = $mc->get( $key, $flags ); | |
| 537 | + $elapsed = $this->timer_stop(); | |
| 538 | + | |
| 539 | + // Value will be unchanged if the key doesn't exist. | |
| 540 | + if ( false === $flags ) { | |
| 541 | + $found = false; | |
| 542 | + $value = false; | |
| 543 | + } elseif ( false === $value && ( $flags & 0xFF01 ) === 0x01 ) { | |
| 544 | + /* | |
| 545 | + * The lowest byte is used for flags. | |
| 546 | + * 0x01 means the value is serialized (MMC_SERIALIZED). | |
| 547 | + * The second lowest indicates data type: 0 is string, 1 is bool, 3 is long, 7 is double. | |
| 548 | + * `null` is serialized into a string, thus $flags is 0x0001 | |
| 549 | + * Empty string will correspond to $flags = 0x0000 (not serialized). | |
| 550 | + * For `false` or `true` $flags will be 0x0100 | |
| 551 | + * | |
| 552 | + * See: | |
| 553 | + * - https://github.com/websupport-sk/pecl-memcache/blob/2a5de3c5d9c0bd0acbcf7e6e0b7570f15f89f55b/php7/memcache_pool.h#L61-L76 - PHP 7.x | |
| 554 | + * - https://github.com/websupport-sk/pecl-memcache/blob/ccf702b14b18fce18a1863e115a7b4c964df952e/src/memcache_pool.h#L57-L76 - PHP 8.x | |
| 555 | + * | |
| 556 | + * In PHP 8, they changed the way memcache_get() handles `null`: | |
| 557 | + * https://github.com/websupport-sk/pecl-memcache/blob/ccf702b14b18fce18a1863e115a7b4c964df952e/src/memcache.c#L2175-L2177 | |
| 558 | + * | |
| 559 | + * If the return value is `null`, it is silently converted to `false`. We can only rely upon $flags to find out whether `false` is real. | |
| 560 | + */ | |
| 561 | + $value = null; | |
| 562 | + } | |
| 563 | + | |
| 564 | + $this->cache[ $key ] = [ | |
| 565 | + 'value' => $value, | |
| 566 | + 'found' => $found, | |
| 567 | + ]; | |
| 568 | + | |
| 569 | + if ( is_null( $value ) || $value === false ) { | |
| 570 | + $this->group_ops_stats( 'get', $key, $group, null, $elapsed, 'not_in_memcache' ); | |
| 571 | + } else if ( 'checkthedatabaseplease' === $value ) { | |
| 572 | + $this->group_ops_stats( 'get', $key, $group, null, $elapsed, 'checkthedatabaseplease' ); | |
| 573 | + } else { | |
| 574 | + $size = $this->get_data_size( $value ); | |
| 575 | + $this->group_ops_stats( 'get', $key, $group, $size, $elapsed, 'memcache' ); | |
| 576 | + } | |
| 235 | 577 | } |
| 236 | - } else if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 237 | - $this->cache[ $key ] = $value = false; | |
| 238 | - } else { | |
| 239 | - $value = $mc->get( $key ); | |
| 240 | - if ( null === $value ) { | |
| 241 | - $value = false; | |
| 578 | + | |
| 579 | + if ( 'checkthedatabaseplease' === $value ) { | |
| 580 | + unset( $this->cache[ $key ] ); | |
| 581 | + | |
| 582 | + $found = false; | |
| 583 | + $value = false; | |
| 242 | 584 | } |
| 243 | - $this->cache[ $key ] = $value; | |
| 585 | + | |
| 586 | + return $value; | |
| 244 | 587 | } |
| 245 | 588 | |
| 246 | - @ ++$this->stats['get']; | |
| 247 | - $this->group_ops[ $group ][] = "get $id"; | |
| 589 | + function get_multi( $groups ) { | |
| 590 | + /* | |
| 591 | + format: $get['group-name'] = array( 'key1', 'key2' ); | |
| 592 | + */ | |
| 593 | + $return = array(); | |
| 594 | + $return_cache = array( | |
| 595 | + 'value' => false, | |
| 596 | + 'found' => false, | |
| 597 | + ); | |
| 248 | 598 | |
| 249 | - if ( 'checkthedatabaseplease' === $value ) { | |
| 250 | - unset( $this->cache[ $key ] ); | |
| 251 | - $value = false; | |
| 599 | + foreach ( $groups as $group => $ids ) { | |
| 600 | + $mc = $this->get_mc( $group ); | |
| 601 | + $keys = array(); | |
| 602 | + $this->timer_start(); | |
| 603 | + | |
| 604 | + foreach ( $ids as $id ) { | |
| 605 | + $key = $this->key( $id, $group ); | |
| 606 | + $keys[] = $key; | |
| 607 | + | |
| 608 | + if ( isset( $this->cache[ $key ] ) ) { | |
| 609 | + if ( is_object( $this->cache[ $key ][ 'value'] ) ) { | |
| 610 | + $return[ $key ] = clone $this->cache[ $key ][ 'value']; | |
| 611 | + $return_cache[ $key ] = [ | |
| 612 | + 'value' => clone $this->cache[ $key ][ 'value'], | |
| 613 | + 'found' => $this->cache[ $key ][ 'found'], | |
| 614 | + ]; | |
| 615 | + } else { | |
| 616 | + $return[ $key ] = $this->cache[ $key ][ 'value']; | |
| 617 | + $return_cache[ $key ] = [ | |
| 618 | + 'value' => $this->cache[ $key ][ 'value' ], | |
| 619 | + 'found' => $this->cache[ $key ][ 'found' ], | |
| 620 | + ]; | |
| 621 | + } | |
| 622 | + | |
| 623 | + continue; | |
| 624 | + } else if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 625 | + $return[ $key ] = false; | |
| 626 | + $return_cache[ $key ] = [ | |
| 627 | + 'value' => false, | |
| 628 | + 'found' => false, | |
| 629 | + ]; | |
| 630 | + | |
| 631 | + continue; | |
| 632 | + } else { | |
| 633 | + $fresh_get = $mc->get( $key ); | |
| 634 | + $return[ $key ] = $fresh_get; | |
| 635 | + $return_cache[ $key ] = [ | |
| 636 | + 'value' => $fresh_get, | |
| 637 | + 'found' => false !== $fresh_get, | |
| 638 | + ]; | |
| 639 | + } | |
| 640 | + } | |
| 641 | + | |
| 642 | + $elapsed = $this->timer_stop(); | |
| 643 | + $this->group_ops_stats( 'get_multi', $keys, $group, null, $elapsed ); | |
| 644 | + } | |
| 645 | + | |
| 646 | + $this->cache = array_merge( $this->cache, $return_cache ); | |
| 647 | + | |
| 648 | + return $return; | |
| 252 | 649 | } |
| 253 | 650 | |
| 254 | - return $value; | |
| 255 | - } | |
| 651 | + public function get_multiple( $keys, $group = 'default', $force = false ) { | |
| 652 | + $mc = $this->get_mc( $group ); | |
| 256 | 653 | |
| 257 | - function get_multi( $groups ) { | |
| 654 | + $no_mc = in_array( $group, $this->no_mc_groups, true ); | |
| 258 | 655 | |
| 259 | - /* | |
| 260 | - format: $get['group-name'] = array( 'key1', 'key2' ); | |
| 261 | - */ | |
| 262 | - $return = array(); | |
| 263 | - foreach ( $groups as $group => $ids ) { | |
| 264 | - $mc =& $this->get_mc( $group ); | |
| 265 | - foreach ( $ids as $id ) { | |
| 656 | + $uncached_keys = array(); | |
| 657 | + $return = array(); | |
| 658 | + $return_cache = array(); | |
| 659 | + | |
| 660 | + foreach ( $keys as $id ) { | |
| 266 | 661 | $key = $this->key( $id, $group ); |
| 267 | - if ( isset( $this->cache[ $key ] ) ) { | |
| 268 | - if ( is_object( $this->cache[ $key ] ) ) { | |
| 269 | - $return[ $key ] = clone $this->cache[ $key ]; | |
| 270 | - } else { | |
| 271 | - $return[ $key ] = $this->cache[ $key ]; | |
| 272 | - } | |
| 273 | - continue; | |
| 274 | - } else if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 275 | - $return[ $key ] = false; | |
| 276 | - continue; | |
| 662 | + | |
| 663 | + if ( isset( $this->cache[ $key ] ) && ( ! $force || $no_mc ) ) { | |
| 664 | + $value = $this->cache[ $key ]['found'] ? $this->cache[ $key ]['value'] : false; | |
| 665 | + $return[ $id ] = is_object( $value ) ? clone $value : $value; | |
| 666 | + } else if ( $no_mc ) { | |
| 667 | + $return[ $id ] = false; | |
| 668 | + $return_cache[ $key ] = [ | |
| 669 | + 'value' => false, | |
| 670 | + 'found' => false, | |
| 671 | + ]; | |
| 277 | 672 | } else { |
| 278 | - $return[ $key ] = $mc->get( $key ); | |
| 673 | + $uncached_keys[ $id ] = $key; | |
| 279 | 674 | } |
| 280 | 675 | } |
| 281 | - if ( $to_get ) { | |
| 282 | - $vals = $mc->get_multi( $to_get ); | |
| 283 | - $return = array_merge( $return, $vals ); | |
| 676 | + | |
| 677 | + if ( $uncached_keys ) { | |
| 678 | + $this->timer_start(); | |
| 679 | + $uncached_keys_list = array_values( $uncached_keys ); | |
| 680 | + $values = $mc->get( $uncached_keys_list ); | |
| 681 | + $elapsed = $this->timer_stop(); | |
| 682 | + | |
| 683 | + $this->group_ops_stats( 'get_multiple', $uncached_keys_list, $group, null, $elapsed ); | |
| 684 | + | |
| 685 | + foreach ( $uncached_keys as $id => $key ) { | |
| 686 | + $found = array_key_exists( $key, $values ); | |
| 687 | + $value = $found ? $values[ $key ] : false; | |
| 688 | + | |
| 689 | + $return[ $id ] = $value; | |
| 690 | + $return_cache[ $key ] = [ | |
| 691 | + 'value' => $value, | |
| 692 | + 'found' => $found, | |
| 693 | + ]; | |
| 694 | + } | |
| 284 | 695 | } |
| 696 | + | |
| 697 | + $this->cache = array_merge( $this->cache, $return_cache ); | |
| 698 | + | |
| 699 | + return $return; | |
| 285 | 700 | } |
| 286 | - @ ++$this->stats['get_multi']; | |
| 287 | - $this->group_ops[ $group ][] = "get_multi $id"; | |
| 288 | - $this->cache = array_merge( $this->cache, $return ); | |
| 289 | - return $return; | |
| 290 | - } | |
| 291 | 701 | |
| 292 | - function key( $key, $group ) { | |
| 702 | + function flush_prefix( $group ) { | |
| 703 | + if ( $group === $this->flush_group || $group === $this->global_flush_group ) { | |
| 704 | + // Never flush the flush numbers. | |
| 705 | + $number = '_'; | |
| 706 | + } elseif ( false !== array_search( $group, $this->global_groups ) ) { | |
| 707 | + $number = $this->get_global_flush_number(); | |
| 708 | + } else { | |
| 709 | + $number = $this->get_blog_flush_number(); | |
| 710 | + } | |
| 711 | + return $number . ':'; | |
| 712 | + } | |
| 293 | 713 | |
| 294 | - if ( empty( $group ) ) { | |
| 295 | - $group = 'default'; | |
| 714 | + function key( $key, $group ) { | |
| 715 | + if ( empty( $group ) ) { | |
| 716 | + $group = 'default'; | |
| 717 | + } | |
| 718 | + | |
| 719 | + $prefix = $this->key_salt; | |
| 720 | + | |
| 721 | + $prefix .= $this->flush_prefix( $group ); | |
| 722 | + | |
| 723 | + if ( false !== array_search( $group, $this->global_groups ) ) { | |
| 724 | + $prefix .= $this->global_prefix; | |
| 725 | + } else { | |
| 726 | + $prefix .= $this->blog_prefix; | |
| 727 | + } | |
| 728 | + | |
| 729 | + return preg_replace( '/\s+/', '', "$prefix:$group:$key" ); | |
| 296 | 730 | } |
| 297 | 731 | |
| 298 | - if ( false !== array_search( $group, $this->global_groups ) ) { | |
| 299 | - $prefix = $this->global_prefix; | |
| 300 | - } else { | |
| 301 | - $prefix = $this->blog_prefix; | |
| 732 | + function replace( $id, $data, $group = 'default', $expire = 0 ) { | |
| 733 | + $key = $this->key( $id, $group ); | |
| 734 | + $expire = intval( $expire ); | |
| 735 | + if ( 0 === $expire || $expire > $this->max_expiration ) { | |
| 736 | + $expire = $this->default_expiration; | |
| 737 | + } | |
| 738 | + $mc = $this->get_mc( $group ); | |
| 739 | + | |
| 740 | + if ( is_object( $data ) ) { | |
| 741 | + $data = clone $data; | |
| 742 | + } | |
| 743 | + | |
| 744 | + $size = $this->get_data_size( $data ); | |
| 745 | + $this->timer_start(); | |
| 746 | + $result = $mc->replace( $key, $data, false, $expire ); | |
| 747 | + $elapsed = $this->timer_stop(); | |
| 748 | + $this->group_ops_stats( 'replace', $key, $group, $size, $elapsed ); | |
| 749 | + | |
| 750 | + if ( false !== $result ) { | |
| 751 | + $this->cache[ $key ] = [ | |
| 752 | + 'value' => $data, | |
| 753 | + 'found' => true, | |
| 754 | + ]; | |
| 755 | + } | |
| 756 | + | |
| 757 | + return $result; | |
| 302 | 758 | } |
| 303 | 759 | |
| 304 | - return preg_replace( '/\s+/', '', WP_CACHE_KEY_SALT . "$prefix$group:$key" ); | |
| 305 | - } | |
| 760 | + function set( $id, $data, $group = 'default', $expire = 0 ) { | |
| 761 | + $key = $this->key( $id, $group ); | |
| 306 | 762 | |
| 307 | - function replace( $id, $data, $group = 'default', $expire = 0 ) { | |
| 763 | + if ( isset( $this->cache[ $key ] ) && ( 'checkthedatabaseplease' === $this->cache[ $key ][ 'value' ] ) ) { | |
| 764 | + return false; | |
| 765 | + } | |
| 308 | 766 | |
| 309 | - $key = $this->key( $id, $group ); | |
| 310 | - $expire = ($expire == 0) ? $this->default_expiration : $expire; | |
| 311 | - $mc =& $this->get_mc( $group ); | |
| 767 | + if ( is_object( $data ) ) { | |
| 768 | + $data = clone $data; | |
| 769 | + } | |
| 312 | 770 | |
| 313 | - if ( is_object( $data ) ) { | |
| 314 | - $data = clone $data; | |
| 771 | + $this->cache[ $key ] = [ | |
| 772 | + 'value' => $data, | |
| 773 | + 'found' => false, // Set to false as not technically found in memcache at this point. | |
| 774 | + ]; | |
| 775 | + | |
| 776 | + if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 777 | + $this->group_ops_stats( 'set_local', $key, $group, null, null ); | |
| 778 | + | |
| 779 | + return true; | |
| 780 | + } | |
| 781 | + | |
| 782 | + $expire = intval( $expire ); | |
| 783 | + if ( 0 === $expire || $expire > $this->max_expiration ) { | |
| 784 | + $expire = $this->default_expiration; | |
| 785 | + } | |
| 786 | + | |
| 787 | + $mc = $this->get_mc( $group ); | |
| 788 | + | |
| 789 | + $size = $this->get_data_size( $data ); | |
| 790 | + $this->timer_start(); | |
| 791 | + $result = $mc->set( $key, $data, false, $expire ); | |
| 792 | + $elapsed = $this->timer_stop(); | |
| 793 | + $this->group_ops_stats( 'set', $key, $group, $size, $elapsed ); | |
| 794 | + | |
| 795 | + // Update the found cache value with the result of the set in memcache. | |
| 796 | + $this->cache[ $key ][ 'found' ] = $result; | |
| 797 | + | |
| 798 | + return $result; | |
| 315 | 799 | } |
| 316 | 800 | |
| 317 | - $result = $mc->replace( $key, $data, false, $expire ); | |
| 318 | - if ( false !== $result ) { | |
| 319 | - $this->cache[ $key ] = $data; | |
| 801 | + public function set_multiple( array $data, $group = '', $expire = 0 ) { | |
| 802 | + $values = array(); | |
| 803 | + | |
| 804 | + foreach ( $data as $key => $value ) { | |
| 805 | + $values[ $key ] = $this->set( $key, $value, $group, $expire ); | |
| 806 | + } | |
| 807 | + | |
| 808 | + return $values; | |
| 320 | 809 | } |
| 321 | - return $result; | |
| 322 | - } | |
| 323 | 810 | |
| 324 | - function set( $id, $data, $group = 'default', $expire = 0 ) { | |
| 811 | + function switch_to_blog( $blog_id ) { | |
| 812 | + global $table_prefix; | |
| 325 | 813 | |
| 326 | - $key = $this->key( $id, $group ); | |
| 327 | - if ( isset( $this->cache[ $key ] ) && ('checkthedatabaseplease' === $this->cache[ $key ]) ) { | |
| 328 | - return false; | |
| 814 | + $blog_id = (int) $blog_id; | |
| 815 | + | |
| 816 | + $this->blog_prefix = ( is_multisite() ? $blog_id : $table_prefix ); | |
| 329 | 817 | } |
| 330 | 818 | |
| 331 | - if ( is_object( $data ) ) { | |
| 332 | - $data = clone $data; | |
| 819 | + function colorize_debug_line( $line, $trailing_html = '' ) { | |
| 820 | + $colors = array( | |
| 821 | + 'get' => 'green', | |
| 822 | + 'get_local' => 'lightgreen', | |
| 823 | + 'get_multi' => 'fuchsia', | |
| 824 | + 'get_multiple' => 'navy', | |
| 825 | + 'set' => 'purple', | |
| 826 | + 'set_local' => 'orchid', | |
| 827 | + 'add' => 'blue', | |
| 828 | + 'delete' => 'red', | |
| 829 | + 'delete_local' => 'tomato', | |
| 830 | + 'slow-ops' => 'crimson', | |
| 831 | + ); | |
| 832 | + | |
| 833 | + $cmd = substr( $line, 0, strpos( $line, ' ' ) ); | |
| 834 | + | |
| 835 | + // Start off with a neutral default color... | |
| 836 | + $color_for_cmd = 'brown'; | |
| 837 | + // And if the cmd has a specific color, use that instead | |
| 838 | + if ( isset( $colors[ $cmd ] ) ) { | |
| 839 | + $color_for_cmd = $colors[ $cmd ]; | |
| 840 | + } | |
| 841 | + | |
| 842 | + $cmd2 = "<span style='color:" . esc_attr( $color_for_cmd ) . "; font-weight: bold;'>" . esc_html( $cmd ) . "</span>"; | |
| 843 | + | |
| 844 | + return $cmd2 . esc_html( substr( $line, strlen( $cmd ) ) ) . "$trailing_html\n"; | |
| 333 | 845 | } |
| 334 | 846 | |
| 335 | - $this->cache[ $key ] = $data; | |
| 847 | + function js_toggle() { | |
| 848 | + echo " | |
| 849 | + <script> | |
| 850 | + function memcachedToggleVisibility( id, hidePrefix ) { | |
| 851 | + var element = document.getElementById( id ); | |
| 852 | + if ( ! element ) { | |
| 853 | + return; | |
| 854 | + } | |
| 336 | 855 | |
| 337 | - if ( in_array( $group, $this->no_mc_groups ) ) { | |
| 338 | - return true; | |
| 856 | + // Hide all element with `hidePrefix` if given. Used to display only one element at a time. | |
| 857 | + if ( hidePrefix ) { | |
| 858 | + var groupStats = document.querySelectorAll( '[id^=\"' + hidePrefix + '\"]' ); | |
| 859 | + groupStats.forEach( | |
| 860 | + function ( element ) { | |
| 861 | + element.style.display = 'none'; | |
| 862 | + } | |
| 863 | + ); | |
| 864 | + } | |
| 865 | + | |
| 866 | + // Toggle the one we clicked. | |
| 867 | + if ( 'none' === element.style.display ) { | |
| 868 | + element.style.display = 'block'; | |
| 869 | + } else { | |
| 870 | + element.style.display = 'none'; | |
| 871 | + } | |
| 339 | 872 | } |
| 873 | + </script> | |
| 874 | + "; | |
| 875 | + } | |
| 340 | 876 | |
| 341 | - $expire = ($expire == 0) ? $this->default_expiration : $expire; | |
| 342 | - $mc =& $this->get_mc( $group ); | |
| 343 | - $result = $mc->set( $key, $data, false, $expire ); | |
| 877 | + /** | |
| 878 | + * Returns the collected raw stats. | |
| 879 | + * | |
| 880 | + * @return array $stats | |
| 881 | + */ | |
| 882 | + function get_stats() { | |
| 883 | + $stats = []; | |
| 884 | + $stats['totals'] = [ | |
| 885 | + 'query_time' => $this->time_total, | |
| 886 | + 'size' => $this->size_total, | |
| 887 | + ]; | |
| 888 | + $stats['operation_counts'] = $this->stats; | |
| 889 | + $stats['operations'] = []; | |
| 890 | + $stats['groups'] = []; | |
| 891 | + $stats['slow-ops'] = []; | |
| 892 | + $stats['slow-ops-groups'] = []; | |
| 893 | + foreach ( $this->group_ops as $cache_group => $dataset ) { | |
| 894 | + if ( empty( $cache_group ) ) { | |
| 895 | + $cache_group = 'default'; | |
| 896 | + } | |
| 344 | 897 | |
| 345 | - return $result; | |
| 346 | - } | |
| 898 | + foreach ( $dataset as $data ) { | |
| 899 | + $operation = $data[0]; | |
| 900 | + $op = [ | |
| 901 | + 'key' => $data[1], | |
| 902 | + 'size' => $data[2], | |
| 903 | + 'time' => $data[3], | |
| 904 | + 'group' => $cache_group, | |
| 905 | + 'result' => $data[4], | |
| 906 | + ]; | |
| 347 | 907 | |
| 348 | - function switch_to_blog( $blog_id ) { | |
| 908 | + if ( $cache_group === 'slow-ops' ) { | |
| 909 | + $key = 'slow-ops'; | |
| 910 | + $groups_key = 'slow-ops-groups'; | |
| 911 | + $op['group'] = $data[5]; | |
| 912 | + $op['backtrace'] = $data[6]; | |
| 913 | + } else { | |
| 914 | + $key = 'operations'; | |
| 915 | + $groups_key = 'groups'; | |
| 916 | + } | |
| 349 | 917 | |
| 350 | - global $table_prefix; | |
| 918 | + $stats[ $key ][ $operation ][] = $op; | |
| 351 | 919 | |
| 352 | - $blog_id = (int) $blog_id; | |
| 353 | - $this->blog_prefix = ( is_multisite() ? $blog_id : $table_prefix ) . ':'; | |
| 354 | - } | |
| 920 | + if ( ! in_array( $op['group'], $stats[ $groups_key ] ) ) { | |
| 921 | + $stats[ $groups_key ][] = $op['group']; | |
| 922 | + } | |
| 923 | + } | |
| 924 | + } | |
| 355 | 925 | |
| 356 | - function colorize_debug_line( $line ) { | |
| 926 | + return $stats; | |
| 927 | + } | |
| 357 | 928 | |
| 358 | - $colors = array( | |
| 359 | - 'get' => 'green', | |
| 360 | - 'set' => 'purple', | |
| 361 | - 'add' => 'blue', | |
| 362 | - 'delete' => 'red', | |
| 363 | - ); | |
| 364 | 929 | |
| 365 | - $cmd = substr( $line, 0, strpos( $line, ' ' ) ); | |
| 930 | + function stats() { | |
| 931 | + $this->js_toggle(); | |
| 366 | 932 | |
| 367 | - $cmd2 = "<span style='color:{$colors[$cmd]}'>$cmd</span>"; | |
| 933 | + echo '<h2><span>Total memcache query time:</span>' . number_format_i18n( sprintf( '%0.1f', $this->time_total * 1000 ), 1 ) . ' ms</h2>'; | |
| 934 | + echo "\n"; | |
| 935 | + echo '<h2><span>Total memcache size:</span>' . esc_html( size_format( $this->size_total, 2 ) ) . '</h2>'; | |
| 936 | + echo "\n"; | |
| 368 | 937 | |
| 369 | - return $cmd2 . substr( $line, strlen( $cmd ) ) . "\n"; | |
| 370 | - } | |
| 938 | + foreach ( $this->stats as $stat => $n ) { | |
| 939 | + if ( empty( $n ) ) { | |
| 940 | + continue; | |
| 941 | + } | |
| 371 | 942 | |
| 372 | - function stats() { | |
| 943 | + echo '<h2>'; | |
| 944 | + echo $this->colorize_debug_line( "$stat $n" ); | |
| 945 | + echo '</h2>'; | |
| 946 | + } | |
| 373 | 947 | |
| 374 | - echo "<p>\n"; | |
| 375 | - foreach ( $this->stats as $stat => $n ) { | |
| 376 | - echo "<strong>$stat</strong> $n"; | |
| 377 | - echo "<br/>\n"; | |
| 948 | + echo "<ul class='debug-menu-links' style='clear:left;font-size:14px;'>\n"; | |
| 949 | + $groups = array_keys( $this->group_ops ); | |
| 950 | + usort( $groups, 'strnatcasecmp' ); | |
| 951 | + | |
| 952 | + $active_group = $groups[0]; | |
| 953 | + // Always show `slow-ops` first | |
| 954 | + if ( in_array( 'slow-ops', $groups ) ) { | |
| 955 | + $slow_ops_key = array_search( 'slow-ops', $groups ); | |
| 956 | + $slow_ops = $groups[ $slow_ops_key ]; | |
| 957 | + unset( $groups[ $slow_ops_key ] ); | |
| 958 | + array_unshift( $groups, $slow_ops ); | |
| 959 | + $active_group = 'slow-ops'; | |
| 960 | + } | |
| 961 | + | |
| 962 | + $total_ops = 0; | |
| 963 | + $group_titles = array(); | |
| 964 | + foreach ( $groups as $group ) { | |
| 965 | + $group_name = $group; | |
| 966 | + if ( empty( $group_name ) ) { | |
| 967 | + $group_name = 'default'; | |
| 968 | + } | |
| 969 | + $group_ops = count( $this->group_ops[ $group ] ); | |
| 970 | + $group_size = size_format( array_sum( array_map( function ( $op ) { return $op[2]; }, $this->group_ops[ $group ] ) ), 2 ); | |
| 971 | + $group_time = number_format_i18n( sprintf( '%0.1f', array_sum( array_map( function ( $op ) { return $op[3]; }, $this->group_ops[ $group ] ) ) * 1000 ), 1 ); | |
| 972 | + $total_ops += $group_ops; | |
| 973 | + $group_title = "{$group_name} [$group_ops][$group_size][{$group_time} ms]"; | |
| 974 | + $group_titles[ $group ] = $group_title; | |
| 975 | + echo "\t<li><a href='#' onclick='memcachedToggleVisibility( \"object-cache-stats-menu-target-" . esc_js( $group_name ) . "\", \"object-cache-stats-menu-target-\" );'>" . esc_html( $group_title ) . "</a></li>\n"; | |
| 976 | + } | |
| 977 | + echo "</ul>\n"; | |
| 978 | + | |
| 979 | + echo "<div id='object-cache-stats-menu-targets'>\n"; | |
| 980 | + foreach ( $groups as $group ) { | |
| 981 | + $group_name = $group; | |
| 982 | + if ( empty( $group_name ) ) { | |
| 983 | + $group_name = 'default'; | |
| 984 | + } | |
| 985 | + $current = $active_group == $group ? 'style="display: block"' : 'style="display: none"'; | |
| 986 | + echo "<div id='object-cache-stats-menu-target-" . esc_attr( $group_name ) . "' class='object-cache-stats-menu-target' $current>\n"; | |
| 987 | + echo '<h3>' . esc_html( $group_titles[ $group ] ) . '</h3>' . "\n"; | |
| 988 | + echo "<pre>\n"; | |
| 989 | + foreach ( $this->group_ops[ $group ] as $index => $arr ) { | |
| 990 | + printf( '%3d ', $index ); | |
| 991 | + echo $this->get_group_ops_line( $index, $arr ); | |
| 992 | + } | |
| 993 | + echo "</pre>\n"; | |
| 994 | + echo "</div>"; | |
| 995 | + } | |
| 996 | + | |
| 997 | + echo "</div>"; | |
| 378 | 998 | } |
| 379 | - echo "</p>\n"; | |
| 380 | - echo '<h3>Memcached:</h3>'; | |
| 381 | - foreach ( $this->group_ops as $group => $ops ) { | |
| 382 | - if ( ! isset( $_GET['debug_queries'] ) && 500 < count( $ops ) ) { | |
| 383 | - $ops = array_slice( $ops, 0, 500 ); | |
| 384 | - echo "<big>Too many to show! <a href='" . add_query_arg( 'debug_queries', 'true' ) . "'>Show them anyway</a>.</big>\n"; | |
| 999 | + | |
| 1000 | + function get_group_ops_line( $index, $arr ) { | |
| 1001 | + // operation | |
| 1002 | + $line = "{$arr[0]} "; | |
| 1003 | + | |
| 1004 | + // key | |
| 1005 | + $json_encoded_key = json_encode( $arr[1] ); | |
| 1006 | + $line .= $json_encoded_key . " "; | |
| 1007 | + | |
| 1008 | + // comment | |
| 1009 | + if ( ! empty( $arr[4] ) ) { | |
| 1010 | + $line .= "{$arr[4]} "; | |
| 385 | 1011 | } |
| 386 | - echo "<h4>$group commands</h4>"; | |
| 387 | - echo "<pre>\n"; | |
| 388 | - $lines = array(); | |
| 389 | - foreach ( $ops as $op ) { | |
| 390 | - $lines[] = $this->colorize_debug_line( $op ); | |
| 1012 | + | |
| 1013 | + // size | |
| 1014 | + if ( isset( $arr[2] ) ) { | |
| 1015 | + $line .= '(' . size_format( $arr[2], 2 ) . ') '; | |
| 391 | 1016 | } |
| 392 | - print_r( $lines ); | |
| 393 | - echo "</pre>\n"; | |
| 1017 | + | |
| 1018 | + // time | |
| 1019 | + if ( isset( $arr[3] ) ) { | |
| 1020 | + $line .= '(' . number_format_i18n( sprintf( '%0.1f', $arr[3] * 1000 ), 1 ) . ' ms)'; | |
| 1021 | + } | |
| 1022 | + | |
| 1023 | + // backtrace | |
| 1024 | + $bt_link = ''; | |
| 1025 | + if ( isset( $arr[6] ) ) { | |
| 1026 | + $key_hash = md5( $index . $json_encoded_key ); | |
| 1027 | + $bt_link = " <small><a href='#' onclick='memcachedToggleVisibility( \"object-cache-stats-debug-$key_hash\" );'>Toggle Backtrace</a></small>"; | |
| 1028 | + $bt_link .= "<pre id='object-cache-stats-debug-$key_hash' style='display:none'>" . esc_html( $arr[6] ) . "</pre>"; | |
| 1029 | + } | |
| 1030 | + | |
| 1031 | + return $this->colorize_debug_line( $line, $bt_link ); | |
| 394 | 1032 | } |
| 395 | - } | |
| 396 | 1033 | |
| 397 | - function &get_mc( $group ) { | |
| 1034 | + /** | |
| 1035 | + * @param int|string $group | |
| 1036 | + * @return Memcache | |
| 1037 | + */ | |
| 1038 | + function get_mc( $group ) { | |
| 1039 | + if ( isset( $this->mc[ $group ] ) ) { | |
| 1040 | + return $this->mc[ $group ]; | |
| 1041 | + } | |
| 398 | 1042 | |
| 399 | - if ( isset( $this->mc[ $group ] ) ) { | |
| 400 | - return $this->mc[ $group ]; | |
| 1043 | + return $this->mc['default']; | |
| 401 | 1044 | } |
| 402 | - return $this->mc['default']; | |
| 403 | - } | |
| 404 | 1045 | |
| 405 | - function failure_callback( $host, $port ) { | |
| 1046 | + function failure_callback( $host, $port ) { | |
| 1047 | + $this->connection_errors[] = array( | |
| 1048 | + 'host' => $host, | |
| 1049 | + 'port' => $port, | |
| 1050 | + ); | |
| 1051 | + } | |
| 406 | 1052 | |
| 407 | - //error_log("Connection failure for $host:$port\n", 3, '/tmp/memcached.txt'); | |
| 408 | - } | |
| 1053 | + function salt_keys( $key_salt ) { | |
| 1054 | + if ( strlen( $key_salt ) ) { | |
| 1055 | + $this->key_salt = $key_salt . ':'; | |
| 1056 | + } else { | |
| 1057 | + $this->key_salt = ''; | |
| 1058 | + } | |
| 1059 | + } | |
| 409 | 1060 | |
| 410 | - function __construct() { | |
| 1061 | + function __construct() { | |
| 1062 | + global $memcached_servers; | |
| 411 | 1063 | |
| 412 | - global $memcached_servers; | |
| 1064 | + if ( isset( $memcached_servers ) ) { | |
| 1065 | + $buckets = $memcached_servers; | |
| 1066 | + } else { | |
| 1067 | + $buckets = array( '127.0.0.1:11211' ); | |
| 1068 | + } | |
| 413 | 1069 | |
| 414 | - if ( isset( $memcached_servers ) ) { | |
| 415 | - $buckets = $memcached_servers; | |
| 416 | - } else { | |
| 417 | - $buckets = array( '127.0.0.1:11211' ); | |
| 1070 | + reset( $buckets ); | |
| 1071 | + | |
| 1072 | + if ( is_int( key( $buckets ) ) ) { | |
| 1073 | + $buckets = array( 'default' => $buckets ); | |
| 1074 | + } | |
| 1075 | + | |
| 1076 | + foreach ( $buckets as $bucket => $servers ) { | |
| 1077 | + $this->mc[ $bucket ] = new Memcache(); | |
| 1078 | + | |
| 1079 | + foreach ( $servers as $i => $server ) { | |
| 1080 | + if ( 'unix://' == substr( $server, 0, 7 ) ) { | |
| 1081 | + $node = $server; | |
| 1082 | + $port = 0; | |
| 1083 | + } else { | |
| 1084 | + if ( false === strpos( $server, ':' ) ) { | |
| 1085 | + $node = $server; | |
| 1086 | + $port = ini_get( 'memcache.default_port' ); | |
| 1087 | + } else { | |
| 1088 | + list ( $node, $port ) = explode( ':', $server, 2 ); | |
| 1089 | + } | |
| 1090 | + | |
| 1091 | + $port = intval( $port ); | |
| 1092 | + | |
| 1093 | + if ( ! $port ) { | |
| 1094 | + $port = 11211; | |
| 1095 | + } | |
| 1096 | + } | |
| 1097 | + | |
| 1098 | + $this->mc[ $bucket ]->addServer( $node, $port, true, 1, 1, 15, true, array( $this, 'failure_callback' ) ); | |
| 1099 | + $this->mc[ $bucket ]->setCompressThreshold( 20000, 0.2 ); | |
| 1100 | + | |
| 1101 | + // Prepare individual connections to servers in default bucket for flush_number redundancy | |
| 1102 | + if ( 'default' === $bucket ) { | |
| 1103 | + $this->default_mcs[ $i ] = new Memcache(); | |
| 1104 | + $this->default_mcs[ $i ]->addServer( $node, $port, true, 1, 1, 15, true, array( $this, 'failure_callback' ) ); | |
| 1105 | + } | |
| 1106 | + } | |
| 1107 | + } | |
| 1108 | + | |
| 1109 | + global $blog_id, $table_prefix; | |
| 1110 | + | |
| 1111 | + $this->global_prefix = ''; | |
| 1112 | + $this->blog_prefix = ''; | |
| 1113 | + | |
| 1114 | + if ( function_exists( 'is_multisite' ) ) { | |
| 1115 | + $this->global_prefix = ( is_multisite() || defined( 'CUSTOM_USER_TABLE' ) && defined( 'CUSTOM_USER_META_TABLE' ) ) ? '' : $table_prefix; | |
| 1116 | + $this->blog_prefix = ( is_multisite() ? $blog_id : $table_prefix ); | |
| 1117 | + } | |
| 1118 | + | |
| 1119 | + $this->salt_keys( WP_CACHE_KEY_SALT ); | |
| 1120 | + | |
| 1121 | + $this->cache_hits =& $this->stats['get']; | |
| 1122 | + $this->cache_misses =& $this->stats['add']; | |
| 418 | 1123 | } |
| 419 | 1124 | |
| 420 | - reset( $buckets ); | |
| 421 | - if ( is_int( key( $buckets ) ) ) { | |
| 422 | - $buckets = array( 'default' => $buckets ); | |
| 1125 | + function increment_stat( $field, $num = 1 ) { | |
| 1126 | + if ( ! isset( $this->stats[ $field ] ) ) { | |
| 1127 | + $this->stats[ $field ] = $num; | |
| 1128 | + } else { | |
| 1129 | + $this->stats[ $field ] += $num; | |
| 1130 | + } | |
| 423 | 1131 | } |
| 424 | 1132 | |
| 425 | - foreach ( $buckets as $bucket => $servers ) { | |
| 426 | - $this->mc[ $bucket ] = new Memcache(); | |
| 427 | - foreach ( $servers as $server ) { | |
| 428 | - if ( 'unix://' == substr( $server, 0, 7 ) ) { | |
| 429 | - $node = $server; | |
| 430 | - $port = 0; | |
| 431 | - } else { | |
| 432 | - list ( $node, $port ) = explode( ':', $server ); | |
| 433 | - if ( ! $port ) { | |
| 434 | - $port = ini_get( 'memcache.default_port' ); | |
| 435 | - } | |
| 436 | - $port = intval( $port ); | |
| 437 | - if ( ! $port ) { | |
| 438 | - $port = 11211; | |
| 439 | - } | |
| 1133 | + function group_ops_stats( $op, $keys, $group, $size, $time, $comment = '' ) { | |
| 1134 | + $this->increment_stat( $op ); | |
| 1135 | + | |
| 1136 | + // we have no use of the local ops details for now | |
| 1137 | + if ( strpos( $op, '_local' ) ) { | |
| 1138 | + return; | |
| 1139 | + } | |
| 1140 | + | |
| 1141 | + $this->size_total += $size; | |
| 1142 | + | |
| 1143 | + $keys = $this->strip_memcached_keys( $keys ); | |
| 1144 | + | |
| 1145 | + // @codeCoverageIgnoreStart | |
| 1146 | + if ( $time > $this->slow_op_microseconds && 'get_multi' !== $op ) { | |
| 1147 | + $this->increment_stat( 'slow-ops' ); | |
| 1148 | + $backtrace = null; | |
| 1149 | + if ( function_exists( 'wp_debug_backtrace_summary' ) ) { | |
| 1150 | + $backtrace = wp_debug_backtrace_summary(); | |
| 440 | 1151 | } |
| 441 | - $this->mc[ $bucket ]->addServer( $node, $port, true, 1, 1, 15, true, array( $this, 'failure_callback' ) ); | |
| 442 | - $this->mc[ $bucket ]->setCompressThreshold( 20000, 0.2 ); | |
| 1152 | + $this->group_ops['slow-ops'][] = array( $op, $keys, $size, $time, $comment, $group, $backtrace ); | |
| 443 | 1153 | } |
| 1154 | + // @codeCoverageIgnoreEnd | |
| 1155 | + | |
| 1156 | + $this->group_ops[ $group ][] = array( $op, $keys, $size, $time, $comment ); | |
| 444 | 1157 | } |
| 445 | 1158 | |
| 446 | - global $blog_id, $table_prefix; | |
| 447 | - $this->global_prefix = ''; | |
| 448 | - $this->blog_prefix = ''; | |
| 449 | - if ( function_exists( 'is_multisite' ) ) { | |
| 450 | - $this->global_prefix = ( is_multisite() || defined( 'CUSTOM_USER_TABLE' ) && defined( 'CUSTOM_USER_META_TABLE' ) ) ? '' : $table_prefix; | |
| 451 | - $this->blog_prefix = ( is_multisite() ? $blog_id : $table_prefix ) . ':'; | |
| 1159 | + /** | |
| 1160 | + * Key format: key_salt:flush_number:table_prefix:key_name | |
| 1161 | + * | |
| 1162 | + * We want to strip the `key_salt:flush_number` part to not leak the memcached keys. | |
| 1163 | + * If `key_salt` is set we strip `'key_salt:flush_number`, otherwise just strip the `flush_number` part. | |
| 1164 | + */ | |
| 1165 | + function strip_memcached_keys( $keys ) { | |
| 1166 | + if ( ! is_array( $keys ) ) { | |
| 1167 | + $keys = [ $keys ]; | |
| 1168 | + } | |
| 1169 | + | |
| 1170 | + foreach ( $keys as $key => $value ) { | |
| 1171 | + $offset = 0; | |
| 1172 | + if ( ! empty( $this->key_salt ) ) { | |
| 1173 | + $offset = strpos( $value, ':' ) + 1; | |
| 1174 | + } | |
| 1175 | + | |
| 1176 | + $start = strpos( $value, ':', $offset ); | |
| 1177 | + $keys[ $key ] = substr( $value, $start + 1 ); | |
| 1178 | + } | |
| 1179 | + | |
| 1180 | + if ( 1 === count( $keys ) ) { | |
| 1181 | + return $keys[0]; | |
| 1182 | + } | |
| 1183 | + | |
| 1184 | + return $keys; | |
| 452 | 1185 | } |
| 453 | 1186 | |
| 454 | - $this->cache_hits =& $this->stats['get']; | |
| 455 | - $this->cache_misses =& $this->stats['add']; | |
| 1187 | + function timer_start() { | |
| 1188 | + $this->time_start = microtime( true ); | |
| 1189 | + | |
| 1190 | + return true; | |
| 1191 | + } | |
| 1192 | + | |
| 1193 | + function timer_stop() { | |
| 1194 | + $time_total = microtime( true ) - $this->time_start; | |
| 1195 | + $this->time_total += $time_total; | |
| 1196 | + | |
| 1197 | + return $time_total; | |
| 1198 | + } | |
| 1199 | + | |
| 1200 | + function get_data_size( $data ) { | |
| 1201 | + if ( is_string( $data ) ) { | |
| 1202 | + return strlen( $data ); | |
| 1203 | + } | |
| 1204 | + | |
| 1205 | + $serialized = serialize( $data ); | |
| 1206 | + | |
| 1207 | + return strlen( $serialized ); | |
| 1208 | + } | |
| 456 | 1209 | } |
| 457 | -} | |
| 1210 | + | |
| 458 | 1211 | endif; |
| 459 | -?> | |
