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includes/modules/ObjectCache/ObjectCacheModule.php
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1.1.0
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1.4.0
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| @@ -19,24 +19,38 @@ | ||
| 19 | 19 | defined( 'ABSPATH' ) || exit; |
| 20 | 20 | |
| 21 | 21 | use XSpeed\Module; |
| 22 | 22 | use XSpeed\Object_Cache; |
| 23 | +use XSpeed\Object_Cache_Takeover; | |
| 23 | 24 | |
| 24 | 25 | final class ObjectCacheModule extends Module { |
| 25 | 26 | |
| 26 | 27 | public const SLUG = 'object-cache'; |
| 27 | 28 | public const TIER = self::TIER_FREE; |
| 28 | - public const VERSION = '1.0.0'; | |
| 29 | + public const VERSION = '1.1.0'; | |
| 29 | 30 | |
| 30 | 31 | public function ui_metadata(): array { |
| 31 | 32 | return array( |
| 32 | - 'label' => 'Object Cache', | |
| 33 | + 'label' => __( 'Object Cache', 'xspeed' ), | |
| 33 | 34 | 'icon' => 'Server', |
| 34 | - 'description' => 'Configure a persistent object cache (Redis / Memcached) and generate a paste-ready wp-config.php snippet.', | |
| 35 | + 'description' => __( 'Stores database query results in Redis or Memcached so pages build faster.', 'xspeed' ), | |
| 36 | + 'group' => 'cache', | |
| 35 | 37 | 'custom_panel' => 'ObjectCachePanel', |
| 36 | 38 | ); |
| 37 | 39 | } |
| 38 | 40 | |
| 41 | + /** | |
| 42 | + * @inheritDoc | |
| 43 | + * | |
| 44 | + * Nothing exempt. Object caching sits beside a page cache and competes for | |
| 45 | + * nothing, and the drop-in is only re-synced when ours is already installed | |
| 46 | + * (see boot()), so the flag installs nothing on its own — all true, and all | |
| 47 | + * a weak reason to leave a switch on that nobody asked for. | |
| 48 | + */ | |
| 49 | + public function conflict_safe_exempt(): array { | |
| 50 | + return array(); | |
| 51 | + } | |
| 52 | + | |
| 39 | 53 | public function settings_schema(): array { |
| 40 | 54 | return array( |
| 41 | 55 | 'backend' => array( |
| 42 | 56 | 'type' => 'enum', |
| @@ -45,16 +59,18 @@ | ||
| 45 | 59 | 'option_labels' => array( |
| 46 | 60 | 'redis' => 'Redis', |
| 47 | 61 | 'memcached' => 'Memcached', |
| 48 | 62 | ), |
| 49 | - 'label' => 'Backend', | |
| 50 | - 'description' => 'Which cache server you intend to use. Affects the generated wp-config snippet.', | |
| 63 | + 'label' => __( 'Cache server', 'xspeed' ), | |
| 64 | + 'description' => __( 'The cache server your host provides. Ask your host if you are not sure.', 'xspeed' ), | |
| 51 | 65 | ), |
| 52 | 66 | 'redis_host' => array( |
| 53 | 67 | 'type' => 'string', |
| 54 | 68 | 'default' => '127.0.0.1', |
| 55 | - 'label' => 'Redis Host', | |
| 56 | - 'description' => 'Hostname or IP of the Redis server. Use 127.0.0.1 for a local socket on the same machine as PHP.', | |
| 69 | + 'constants' => array( 'XSPEED_OC_HOST', 'WP_REDIS_HOST' ), | |
| 70 | + 'label' => __( 'Redis host', 'xspeed' ), | |
| 71 | + 'description' => __( 'Address of the Redis server. Use 127.0.0.1 when Redis runs on the same server as your site.', 'xspeed' ), | |
| 72 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'redis' ), | |
| 57 | 73 | ), |
| 58 | 74 | 'redis_port' => array( |
| 59 | 75 | 'type' => 'int', |
| 60 | 76 | 'default' => 6379, |
| @@ -59,22 +75,36 @@ | ||
| 59 | 75 | 'type' => 'int', |
| 60 | 76 | 'default' => 6379, |
| 61 | 77 | 'min' => 1, |
| 62 | 78 | 'max' => 65535, |
| 63 | - 'label' => 'Redis Port', | |
| 64 | - 'description' => 'Default Redis port is 6379.', | |
| 79 | + 'constants' => array( 'XSPEED_OC_PORT', 'WP_REDIS_PORT' ), | |
| 80 | + 'label' => __( 'Redis port', 'xspeed' ), | |
| 81 | + 'description' => __( 'The default Redis port is 6379.', 'xspeed' ), | |
| 82 | + 'advanced' => true, | |
| 83 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'redis' ), | |
| 65 | 84 | ), |
| 66 | 85 | 'redis_user' => array( |
| 67 | - 'type' => 'string', | |
| 68 | - 'default' => '', | |
| 69 | - 'label' => 'Redis User', | |
| 70 | - 'description' => 'Optional. Set this only if your host provisioned a dedicated Redis ACL user (Redis 6+) — e.g. some managed hosts issue a Redis User alongside the password. Leave blank to authenticate as the default user (legacy password-only Redis).', | |
| 86 | + 'type' => 'string', | |
| 87 | + 'default' => '', | |
| 88 | + // WP_REDIS_PASSWORD trails the dedicated names because in its | |
| 89 | + // array form -- how xCloud and Cloudways hand out ACL | |
| 90 | + // credentials -- it carries the username too. It is pair-only: | |
| 91 | + // as a plain string it is a password, never a username. | |
| 92 | + 'constants' => array( 'XSPEED_OC_USER', 'WP_REDIS_USER', 'WP_REDIS_PASSWORD' ), | |
| 93 | + 'constants_pair_only' => array( 'WP_REDIS_PASSWORD' ), | |
| 94 | + 'constant_pair' => 'user', | |
| 95 | + 'label' => __( 'Redis username', 'xspeed' ), | |
| 96 | + 'description' => __( 'Only needed if your host gave you a Redis username along with the password. Leave blank otherwise.', 'xspeed' ), | |
| 97 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'redis' ), | |
| 71 | 98 | ), |
| 72 | 99 | 'redis_password' => array( |
| 73 | - 'type' => 'string', | |
| 74 | - 'default' => '', | |
| 75 | - 'label' => 'Redis Password', | |
| 76 | - 'description' => 'Leave blank if your Redis server runs without auth.', | |
| 100 | + 'type' => 'secret', | |
| 101 | + 'default' => '', | |
| 102 | + 'constants' => array( 'XSPEED_OC_PASSWORD', 'WP_REDIS_PASSWORD' ), | |
| 103 | + 'constant_pair' => 'password', | |
| 104 | + 'label' => __( 'Redis password', 'xspeed' ), | |
| 105 | + 'description' => __( 'Leave blank if your Redis server has no password.', 'xspeed' ), | |
| 106 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'redis' ), | |
| 77 | 107 | ), |
| 78 | 108 | 'redis_database' => array( |
| 79 | 109 | 'type' => 'int', |
| 80 | 110 | 'default' => 0, |
| @@ -79,30 +109,95 @@ | ||
| 79 | 109 | 'type' => 'int', |
| 80 | 110 | 'default' => 0, |
| 81 | 111 | 'min' => 0, |
| 82 | 112 | 'max' => 15, |
| 83 | - 'label' => 'Redis Database', | |
| 84 | - 'description' => 'Redis logical DB number (0-15). Use a dedicated DB per site if Redis is shared.', | |
| 113 | + 'constants' => array( 'XSPEED_OC_DATABASE', 'WP_REDIS_DATABASE' ), | |
| 114 | + 'label' => __( 'Redis database', 'xspeed' ), | |
| 115 | + 'description' => __( 'Database number, 0 to 15. If several sites share one Redis server, give each site its own number.', 'xspeed' ), | |
| 116 | + 'advanced' => true, | |
| 117 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'redis' ), | |
| 85 | 118 | ), |
| 86 | 119 | 'memcached_host' => array( |
| 87 | 120 | 'type' => 'string', |
| 88 | 121 | 'default' => '127.0.0.1', |
| 89 | - 'label' => 'Memcached Host', | |
| 90 | - 'description' => 'Used when Backend = Memcached.', | |
| 122 | + // Memcached names its OWN constants. Sharing XSPEED_OC_HOST/PORT | |
| 123 | + // with Redis meant enabling Redis rewrote the Memcached host and | |
| 124 | + // port with Redis's, and locked them -- switching backend later | |
| 125 | + // then failed with no way to fix it on screen. (#398) | |
| 126 | + 'constants' => array( 'XSPEED_OC_MC_HOST', 'XSPEED_OC_HOST' ), | |
| 127 | + // XSPEED_OC_HOST/PORT are the pre-split names, kept so an install | |
| 128 | + // configured before the split keeps its host on upgrade. Gated on | |
| 129 | + // the backend actually being Memcached, or a Redis site would read | |
| 130 | + // the Redis port here. Fades out on the next save. (#398) | |
| 131 | + 'constants_when' => array( | |
| 132 | + 'XSPEED_OC_HOST' => array( 'constant' => 'XSPEED_OC_BACKEND', 'is' => 'memcached' ), | |
| 133 | + ), | |
| 134 | + | |
| 135 | + // Memcached has no constant convention the way Redis has | |
| 136 | + // WP_REDIS_*; $memcached_servers IS the convention (W3TC, the | |
| 137 | + // Memcached Object Cache drop-in), and hosts write it. The | |
| 138 | + // drop-in already honoured it while the panel did not. (#398) | |
| 139 | + 'global_source' => array( | |
| 140 | + 'var' => 'memcached_servers', | |
| 141 | + 'reader' => array( '\\XSpeed\\Object_Cache', 'first_memcached_server' ), | |
| 142 | + 'slot' => 0, | |
| 143 | + ), | |
| 144 | + 'label' => __( 'Memcached host', 'xspeed' ), | |
| 145 | + 'description' => __( 'Address of the Memcached server. Use 127.0.0.1 when it runs on the same server as your site.', 'xspeed' ), | |
| 146 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'memcached' ), | |
| 91 | 147 | ), |
| 92 | 148 | 'memcached_port' => array( |
| 93 | - 'type' => 'int', | |
| 94 | - 'default' => 11211, | |
| 95 | - 'min' => 1, | |
| 96 | - 'max' => 65535, | |
| 97 | - 'label' => 'Memcached Port', | |
| 98 | - 'description' => 'Default Memcached port is 11211.', | |
| 149 | + 'type' => 'int', | |
| 150 | + 'default' => 11211, | |
| 151 | + 'min' => 1, | |
| 152 | + 'max' => 65535, | |
| 153 | + 'constants' => array( 'XSPEED_OC_MC_PORT', 'XSPEED_OC_PORT' ), | |
| 154 | + // XSPEED_OC_HOST/PORT are the pre-split names, kept so an install | |
| 155 | + // configured before the split keeps its host on upgrade. Gated on | |
| 156 | + // the backend actually being Memcached, or a Redis site would read | |
| 157 | + // the Redis port here. Fades out on the next save. (#398) | |
| 158 | + 'constants_when' => array( | |
| 159 | + 'XSPEED_OC_PORT' => array( 'constant' => 'XSPEED_OC_BACKEND', 'is' => 'memcached' ), | |
| 160 | + ), | |
| 161 | + | |
| 162 | + 'global_source' => array( | |
| 163 | + 'var' => 'memcached_servers', | |
| 164 | + 'reader' => array( '\\XSpeed\\Object_Cache', 'first_memcached_server' ), | |
| 165 | + 'slot' => 1, | |
| 166 | + ), | |
| 167 | + 'label' => __( 'Memcached port', 'xspeed' ), | |
| 168 | + 'description' => __( 'The default Memcached port is 11211.', 'xspeed' ), | |
| 169 | + 'advanced' => true, | |
| 170 | + 'dependsOn' => array( 'field' => 'backend', 'value' => 'memcached' ), | |
| 99 | 171 | ), |
| 100 | 172 | 'key_prefix' => array( |
| 101 | 173 | 'type' => 'string', |
| 102 | 174 | 'default' => '', |
| 103 | - 'label' => 'Cache Key Prefix', | |
| 104 | - 'description' => 'Unique salt for this site\'s cache keys. Critical when multiple WP sites share one Redis/Memcached server. On ACL/namespaced Redis (e.g. xCloud), this MUST match the host\'s "Redis Object Cache Key" — otherwise cache writes are denied (NOPERM) and nothing persists.', | |
| 175 | + // ONE field for both backends on purpose: the drop-in has one | |
| 176 | + // salt and applies it identically either way (full_key()), so | |
| 177 | + // splitting it would be two controls over one value. | |
| 178 | + // | |
| 179 | + // Both names are honoured whichever backend is selected. | |
| 180 | + // WP_REDIS_PREFIX reads oddly on a Memcached site, but a site | |
| 181 | + // that has defined it has said what namespace it wants, and | |
| 182 | + // ignoring that to keep the label tidy would be the panel | |
| 183 | + // disagreeing with the drop-in -- the exact bug this closes. | |
| 184 | + // The field's own description carries the explanation. (#398) | |
| 185 | + // | |
| 186 | + // WP_CACHE_KEY_SALT is deliberately NOT declared here (#430): | |
| 187 | + // it is WordPress's own cache-uniqueness salt, present and | |
| 188 | + // random on nearly every install, not a namespace declaration. | |
| 189 | + // Listing it pinned this field on that random value and locked | |
| 190 | + // editing -- while the override path already refused to treat | |
| 191 | + // it as a foreign authority, so "Manage here" could never | |
| 192 | + // unlock the field. With no salt of our own the field stays | |
| 193 | + // blank and editable; the drop-in still honours a defined | |
| 194 | + // WP_CACHE_KEY_SALT as its last-resort salt at runtime. | |
| 195 | + 'constants' => array( 'XSPEED_OC_SALT', 'WP_REDIS_PREFIX' ), | |
| 196 | + 'label' => __( 'Cache key prefix', 'xspeed' ), | |
| 197 | + 'description' => __( 'Leave blank and xSpeed picks a unique prefix for this site. Some managed Redis hosts, such as xCloud, give you a key to paste here, or nothing gets saved.', 'xspeed' ), | |
| 198 | + // Not advanced: on ACL hosts it is required, and the write-denied | |
| 199 | + // notice (Object_Cache::write_denied_message) sends users here. | |
| 105 | 200 | ), |
| 106 | 201 | 'connection_timeout' => array( |
| 107 | 202 | 'type' => 'int', |
| 108 | 203 | 'default' => 1, |
| @@ -107,20 +202,417 @@ | ||
| 107 | 202 | 'type' => 'int', |
| 108 | 203 | 'default' => 1, |
| 109 | 204 | 'min' => 0, |
| 110 | 205 | 'max' => 60, |
| 111 | - 'label' => 'Connection Timeout (seconds)', | |
| 112 | - 'description' => 'How long to wait for a connection. Keep low (1-2s) so a misconfigured cache never stalls the page.', | |
| 206 | + 'constants' => array( 'XSPEED_OC_TIMEOUT', 'WP_REDIS_TIMEOUT' ), | |
| 207 | + 'label' => __( 'Connection timeout (seconds)', 'xspeed' ), | |
| 208 | + 'unit' => 'seconds', | |
| 209 | + 'description' => __( 'How long to wait for the cache server. Keep it at 1 or 2 seconds so a broken cache server never holds up a page.', 'xspeed' ), | |
| 210 | + 'advanced' => true, | |
| 113 | 211 | ), |
| 114 | 212 | 'persistent' => array( |
| 115 | 213 | 'type' => 'bool', |
| 116 | 214 | 'default' => true, |
| 117 | - 'label' => 'Persistent Connections', | |
| 118 | - 'description' => 'Reuse the connection across PHP requests when supported. Generally a win unless the cache server complains about idle connections.', | |
| 215 | + 'constants' => array( 'XSPEED_OC_PERSISTENT', 'WP_REDIS_PERSISTENT' ), | |
| 216 | + 'label' => __( 'Persistent connections', 'xspeed' ), | |
| 217 | + 'description' => __( 'Keep the connection open between page loads. Turn off only if your cache server reports too many idle connections.', 'xspeed' ), | |
| 218 | + 'advanced' => true, | |
| 119 | 219 | ), |
| 120 | 220 | ); |
| 121 | 221 | } |
| 122 | 222 | |
| 223 | + /** | |
| 224 | + * Encrypt the pre-1.1.0 plaintext redis_password on upgrade — it became a | |
| 225 | + * `secret`-typed field (encrypted at rest). Idempotent. (#115) | |
| 226 | + */ | |
| 227 | + public function migrations(): array { | |
| 228 | + return array( | |
| 229 | + '1.1.0' => static function ( array $opts ): array { | |
| 230 | + if ( isset( $opts['redis_password'] ) && is_string( $opts['redis_password'] ) && '' !== $opts['redis_password'] ) { | |
| 231 | + $opts['redis_password'] = \XSpeed\Settings_Manager::encrypt_for_storage( $opts['redis_password'] ); | |
| 232 | + } | |
| 233 | + return $opts; | |
| 234 | + }, | |
| 235 | + ); | |
| 236 | + } | |
| 237 | + | |
| 238 | + /** Counts failed drop-in sync attempts so a permanent failure stops retrying. */ | |
| 239 | + private const SYNC_ATTEMPTS_OPTION = 'xspeed_oc_sync_attempts'; | |
| 240 | + | |
| 241 | + /** | |
| 242 | + * Verdict of the write probe run after the last save. Read by the status | |
| 243 | + * card so a backend that silently refuses writes cannot keep reporting a | |
| 244 | + * healthy cache. (#398) | |
| 245 | + */ | |
| 246 | + private const WRITE_PROBE_OPTION = 'xspeed_oc_write_probe'; | |
| 247 | + | |
| 248 | + /** | |
| 249 | + * The recorded write failure, if it is still true right now. | |
| 250 | + * | |
| 251 | + * The probe is written on save, so anything that fixes the backend WITHOUT | |
| 252 | + * a save -- `objcache revert` rescuing a bad key prefix is the case that | |
| 253 | + * matters -- left the warning standing over a cache that had recovered. Any | |
| 254 | + * reader would then cry wolf until the next save. Re-checking before | |
| 255 | + * reporting keeps one stored probe honest for both readers, and clears it | |
| 256 | + * so the recheck happens once rather than on every status call. (#398) | |
| 257 | + * | |
| 258 | + * @return array{ok:bool,message:string,at:int}|null Null when writes are fine. | |
| 259 | + */ | |
| 260 | + private static function live_write_failure(): ?array { | |
| 261 | + $probe = get_option( self::WRITE_PROBE_OPTION, array() ); | |
| 262 | + if ( ! is_array( $probe ) || ! array_key_exists( 'ok', $probe ) || ! empty( $probe['ok'] ) ) { | |
| 263 | + return null; | |
| 264 | + } | |
| 265 | + if ( ! Object_Cache::is_our_dropin_present() ) { | |
| 266 | + delete_option( self::WRITE_PROBE_OPTION ); | |
| 267 | + return null; | |
| 268 | + } | |
| 269 | + | |
| 270 | + /* | |
| 271 | + * Throttle the recheck. This reader sits on rest_detect(), which the | |
| 272 | + * panel polls, and on every `objcache status` -- and the recheck is a | |
| 273 | + * real TCP connect plus a SET/GET/DEL round trip. On a backend that is | |
| 274 | + * DOWN rather than merely refusing writes the probe never clears, so | |
| 275 | + * without this every poll blocks for the full timeout and the object | |
| 276 | + * cache screen feels hung at exactly the moment someone is trying to | |
| 277 | + * fix it. A stale-by-a-minute warning is the cheaper error. (#398) | |
| 278 | + */ | |
| 279 | + $checked = (int) ( $probe['rechecked_at'] ?? 0 ); | |
| 280 | + if ( $checked > 0 && ( time() - $checked ) < MINUTE_IN_SECONDS ) { | |
| 281 | + return array( | |
| 282 | + 'ok' => false, | |
| 283 | + 'message' => (string) ( $probe['message'] ?? '' ), | |
| 284 | + 'at' => (int) ( $probe['at'] ?? 0 ), | |
| 285 | + ); | |
| 286 | + } | |
| 287 | + | |
| 288 | + /* | |
| 289 | + * Recheck against the STORED row, not the resolved settings. Within the | |
| 290 | + * request that saved the value, our block has been rewritten but PHP | |
| 291 | + * has already defined those constants and cannot redefine them -- so | |
| 292 | + * the resolved read still returns the PRE-save value. Rechecking that | |
| 293 | + * tests a configuration the site is no longer being asked to use, and a | |
| 294 | + * healthy answer would clear a probe that is genuinely true, putting | |
| 295 | + * the silent-dead-cache bug straight back. The row is what the next | |
| 296 | + * request's block is built from, so it is what the probe describes. | |
| 297 | + * (#398) | |
| 298 | + */ | |
| 299 | + $opts = \XSpeed\Settings_Manager::stored_with_defaults( self::SLUG ); | |
| 300 | + $opts['connection_timeout'] = min( 2, max( 1, (int) ( $opts['connection_timeout'] ?? 1 ) ) ); | |
| 301 | + $now = Object_Cache::test_connection( $opts ); | |
| 302 | + if ( ! empty( $now['ok'] ) ) { | |
| 303 | + delete_option( self::WRITE_PROBE_OPTION ); | |
| 304 | + return null; | |
| 305 | + } | |
| 306 | + | |
| 307 | + $still = array( | |
| 308 | + 'ok' => false, | |
| 309 | + 'message' => (string) ( $now['message'] ?? ( $probe['message'] ?? '' ) ), | |
| 310 | + 'at' => (int) ( $probe['at'] ?? 0 ), | |
| 311 | + 'rechecked_at' => time(), | |
| 312 | + ); | |
| 313 | + update_option( self::WRITE_PROBE_OPTION, $still, false ); | |
| 314 | + | |
| 315 | + unset( $still['rechecked_at'] ); | |
| 316 | + return $still; | |
| 317 | + } | |
| 318 | + | |
| 319 | + /** Give up after this many failed syncs for one plugin version. */ | |
| 320 | + private const MAX_SYNC_ATTEMPTS = 5; | |
| 321 | + | |
| 322 | + public function boot(): void { | |
| 323 | + // A saved override is promoted into our wp-config block, then the field | |
| 324 | + // re-locks reading OUR constant. This is what makes "edit once, lock | |
| 325 | + // again" honest: the drop-in loads before WordPress and cannot read an | |
| 326 | + // option row, so a value that stayed in the database would be a setting | |
| 327 | + // the panel showed and the runtime ignored. (#398) | |
| 328 | + /* | |
| 329 | + * Mirror every save into our own store, so the drop-in -- which loads | |
| 330 | + * before WordPress and cannot read an option row -- sees what the panel | |
| 331 | + * just wrote. Only OUR block is rewritten: a define the host owns is | |
| 332 | + * left alone by wp_config_block()'s pinned_elsewhere() check, and when | |
| 333 | + * wp-config.php is read-only the write lands in the sidecar instead. | |
| 334 | + * | |
| 335 | + * Without this a save updated the option row while the block kept the | |
| 336 | + * previous value, and the constant outranks the row -- so the panel | |
| 337 | + * reported success and the site went on using the old setting. (#398) | |
| 338 | + */ | |
| 339 | + /* | |
| 340 | + * Answer the backend gate from the sidecar when no constant defines it. | |
| 341 | + * The legacy Memcached fallback (XSPEED_OC_HOST/PORT) is gated on the | |
| 342 | + * backend being Memcached, and on a read-only-wp-config host that fact | |
| 343 | + * lives in the sidecar -- so without this the panel reported the | |
| 344 | + * default host while the drop-in used the real one. (#398) | |
| 345 | + */ | |
| 346 | + /* | |
| 347 | + * Answer settings reads from the sidecar. On a host where wp-config.php | |
| 348 | + * is read-only the sidecar IS the configuration, so a panel that read | |
| 349 | + * only the option row would show the stored values while the drop-in | |
| 350 | + * ran on the sidecar's -- the panel/runtime split this change exists to | |
| 351 | + * close. Constants still win; this sits between them and the row. (#398) | |
| 352 | + */ | |
| 353 | + add_filter( | |
| 354 | + 'xspeed_setting_external_source', | |
| 355 | + static function ( $value, string $slug, string $key ) { | |
| 356 | + if ( null !== $value || self::SLUG !== $slug ) { | |
| 357 | + return $value; | |
| 358 | + } | |
| 359 | + $sidecar = Object_Cache::read_sidecar(); | |
| 360 | + return array_key_exists( $key, $sidecar ) ? $sidecar[ $key ] : null; | |
| 361 | + }, | |
| 362 | + 10, | |
| 363 | + 3 | |
| 364 | + ); | |
| 365 | + | |
| 366 | + add_filter( | |
| 367 | + 'xspeed_constant_gate_value', | |
| 368 | + static function ( $value, string $constant ) { | |
| 369 | + if ( null !== $value || 'XSPEED_OC_BACKEND' !== $constant ) { | |
| 370 | + return $value; | |
| 371 | + } | |
| 372 | + $sidecar = Object_Cache::read_sidecar(); | |
| 373 | + return $sidecar['backend'] ?? null; | |
| 374 | + }, | |
| 375 | + 10, | |
| 376 | + 2 | |
| 377 | + ); | |
| 378 | + | |
| 379 | + add_action( | |
| 380 | + 'xspeed_settings_saved', | |
| 381 | + static function ( string $slug, array $clean ): void { | |
| 382 | + if ( self::SLUG !== $slug ) { | |
| 383 | + return; | |
| 384 | + } | |
| 385 | + // Only when we already own a block or a sidecar. Creating one | |
| 386 | + // on a site that never enabled the object cache would write to | |
| 387 | + // wp-config.php for a feature that is switched off. | |
| 388 | + /* | |
| 389 | + * Mirror whenever the drop-in is installed -- that, not the | |
| 390 | + * presence of a store, is what makes a DB-only value a setting | |
| 391 | + * the panel shows and the runtime ignores. Keying on the store | |
| 392 | + * instead could strand a site whose block write once failed: | |
| 393 | + * with no block and no sidecar the guard would return early | |
| 394 | + * forever and saves would stop being mirrored. (#398) | |
| 395 | + */ | |
| 396 | + if ( ! Object_Cache::is_our_dropin_present() ) { | |
| 397 | + return; | |
| 398 | + } | |
| 399 | + Object_Cache::write_wp_config( $clean ); | |
| 400 | + | |
| 401 | + /* | |
| 402 | + * Prove the backend still ACCEPTS WRITES with the settings just | |
| 403 | + * saved. On a namespaced/ACL Redis a key prefix outside the | |
| 404 | + * granted namespace is refused with NOPERM, and the drop-in | |
| 405 | + * swallows that -- so the panel reported success, the status | |
| 406 | + * card kept saying "On", and the site paid for a cache that | |
| 407 | + * stored nothing. Only an explicit Test connection revealed it. | |
| 408 | + * | |
| 409 | + * Recorded rather than thrown: the save itself DID land, and | |
| 410 | + * failing it would leave the panel and the row disagreeing. The | |
| 411 | + * status card reads this and says so. (#398) | |
| 412 | + */ | |
| 413 | + if ( Object_Cache::is_our_dropin_present() ) { | |
| 414 | + /* | |
| 415 | + * Clamp the probe's timeout. It runs inside an admin POST, | |
| 416 | + * and connection_timeout is the user's own setting -- a | |
| 417 | + * save that points at a black-holed IP would otherwise | |
| 418 | + * block the request for as long as they typed. The probe is | |
| 419 | + * a check, not the connection the site runs on, so a short | |
| 420 | + * ceiling costs nothing. | |
| 421 | + */ | |
| 422 | + $probe_opts = $clean; | |
| 423 | + $probe_opts['connection_timeout'] = min( 2, max( 1, (int) ( $clean['connection_timeout'] ?? 1 ) ) ); | |
| 424 | + $probe = Object_Cache::test_connection( $probe_opts ); | |
| 425 | + update_option( | |
| 426 | + self::WRITE_PROBE_OPTION, | |
| 427 | + array( | |
| 428 | + 'ok' => ! empty( $probe['ok'] ), | |
| 429 | + 'message' => (string) ( $probe['message'] ?? '' ), | |
| 430 | + 'at' => time(), | |
| 431 | + ), | |
| 432 | + false | |
| 433 | + ); | |
| 434 | + } | |
| 435 | + }, | |
| 436 | + 10, | |
| 437 | + 2 | |
| 438 | + ); | |
| 439 | + | |
| 440 | + /* | |
| 441 | + * Ownership of a field changed hands, so our block no longer reflects | |
| 442 | + * what should be in it. On a revert this is the step that actually | |
| 443 | + * frees the field: Settings_Manager::revert() has dropped our stored | |
| 444 | + * value, and rewriting the block from the settings as they NOW resolve | |
| 445 | + * is what removes our define and lets the host's constant win again. | |
| 446 | + * | |
| 447 | + * Without this listener the hook fired into nothing, the define stayed, | |
| 448 | + * and "Use the host value" was a no-op in the panel while the CLI -- | |
| 449 | + * which did the same work inline -- worked. (#398) | |
| 450 | + */ | |
| 451 | + add_action( | |
| 452 | + 'xspeed_setting_override_changed', | |
| 453 | + static function ( string $slug, string $key, bool $on ): void { | |
| 454 | + unset( $key ); | |
| 455 | + if ( self::SLUG !== $slug || ! Object_Cache::is_our_dropin_present() ) { | |
| 456 | + return; | |
| 457 | + } | |
| 458 | + /* | |
| 459 | + * Only on a REVERT, and only when nothing else is mid-flight. | |
| 460 | + * | |
| 461 | + * update() also lifts an override as its last act, having just | |
| 462 | + * promoted the typed value into our block -- a rewrite here | |
| 463 | + * would resolve the host's constant again and erase the define | |
| 464 | + * that save had only just written, silently undoing the edit. | |
| 465 | + * A revert is the one case where erasing our define IS the | |
| 466 | + * point. (#398) | |
| 467 | + */ | |
| 468 | + if ( $on || \XSpeed\Settings_Manager::is_promoting( self::SLUG ) ) { | |
| 469 | + return; | |
| 470 | + } | |
| 471 | + Object_Cache::write_wp_config( \XSpeed\Settings_Manager::get( self::SLUG ) ); | |
| 472 | + }, | |
| 473 | + 10, | |
| 474 | + 3 | |
| 475 | + ); | |
| 476 | + | |
| 477 | + add_action( | |
| 478 | + 'xspeed_settings_promote_to_config', | |
| 479 | + static function ( string $slug, array $values ): void { | |
| 480 | + if ( self::SLUG !== $slug ) { | |
| 481 | + return; | |
| 482 | + } | |
| 483 | + // The block is CREATED here if absent, unlike the passive | |
| 484 | + // rewrites elsewhere. This write is the thing the admin just | |
| 485 | + // asked for and was warned about; refusing it because the | |
| 486 | + // object cache is not enabled yet would make the save a silent | |
| 487 | + // no-op -- the failure mode this whole contract exists to | |
| 488 | + // prevent. (#398) | |
| 489 | + // Forced: these fields are exactly the ones a foreign define | |
| 490 | + // still pins, which is why they were overridden in the first | |
| 491 | + // place. Without the force list pinned_elsewhere() would drop | |
| 492 | + // them and the save would write nothing. | |
| 493 | + Object_Cache::write_wp_config( | |
| 494 | + array_merge( \XSpeed\Settings_Manager::get( self::SLUG ), $values ), | |
| 495 | + array_keys( $values ) | |
| 496 | + ); | |
| 497 | + }, | |
| 498 | + 10, | |
| 499 | + 2 | |
| 500 | + ); | |
| 501 | + | |
| 502 | + | |
| 503 | + // Keep the deployed drop-in in sync with the shipped template. It is | |
| 504 | + // copied into wp-content/object-cache.php on enable and then never | |
| 505 | + // touched again — so a fix shipped in a plugin update (e.g. the | |
| 506 | + // stale-alloptions eviction on failed backend writes, issue #41) | |
| 507 | + // would never reach existing installs. Version-gated so the file | |
| 508 | + // comparison runs once per plugin version, not on every admin load. | |
| 509 | + add_action( | |
| 510 | + 'admin_init', | |
| 511 | + static function (): void { | |
| 512 | + if ( get_option( 'xspeed_oc_dropin_synced', '' ) === XSPEED_VERSION ) { | |
| 513 | + return; | |
| 514 | + } | |
| 515 | + $ok = true; | |
| 516 | + if ( Object_Cache::is_our_dropin_present() ) { | |
| 517 | + // Both steps run regardless of each other — they fail | |
| 518 | + // independently (drop-in needs wp-content writable, the | |
| 519 | + // backfill needs wp-config writable), and short-circuiting | |
| 520 | + // would skip a backfill that could have succeeded. | |
| 521 | + $installed = Object_Cache::install_dropin(); | |
| 522 | + $salted = self::backfill_key_salt(); | |
| 523 | + $ok = $installed && $salted; | |
| 524 | + } | |
| 525 | + // Only stamp the version when the sync actually succeeded. A | |
| 526 | + // transient failure (wp-config momentarily unwritable, a | |
| 527 | + // filesystem hiccup) then gets retried on a later admin load | |
| 528 | + // rather than being recorded as migrated and left unsalted. | |
| 529 | + // | |
| 530 | + // Bounded, though: where the failure is permanent — a host that | |
| 531 | + // ships a read-only wp-config — retrying forever would run | |
| 532 | + // WP_Filesystem work on every single admin page load for no | |
| 533 | + // gain. It is safe to stop, because the drop-in derives its own | |
| 534 | + // salt when the constant is absent, so such an install is | |
| 535 | + // namespaced either way; the constant is only the faster path. | |
| 536 | + if ( $ok ) { | |
| 537 | + update_option( 'xspeed_oc_dropin_synced', XSPEED_VERSION ); | |
| 538 | + delete_option( self::SYNC_ATTEMPTS_OPTION ); | |
| 539 | + return; | |
| 540 | + } | |
| 541 | + | |
| 542 | + $attempts = (int) get_option( self::SYNC_ATTEMPTS_OPTION, 0 ) + 1; | |
| 543 | + if ( $attempts >= self::MAX_SYNC_ATTEMPTS ) { | |
| 544 | + update_option( 'xspeed_oc_dropin_synced', XSPEED_VERSION ); | |
| 545 | + delete_option( self::SYNC_ATTEMPTS_OPTION ); | |
| 546 | + return; | |
| 547 | + } | |
| 548 | + update_option( self::SYNC_ATTEMPTS_OPTION, $attempts ); | |
| 549 | + } | |
| 550 | + ); | |
| 551 | + } | |
| 552 | + | |
| 553 | + /** | |
| 554 | + * Backfill a per-site key salt on installs enabled before the salt became | |
| 555 | + * mandatory. | |
| 556 | + * | |
| 557 | + * Enabling with a blank Cache Key Prefix used to write no salt constant at | |
| 558 | + * all, leaving every key namespaced as `:{blog}:{group}:{key}` — identical | |
| 559 | + * on every install. Two sites sharing one Redis/Memcached server then read | |
| 560 | + * each other's `blog-details` / `blog-lookup` entries, and the second site | |
| 561 | + * resolves to (and redirects to) the first. | |
| 562 | + * | |
| 563 | + * Rewriting wp-config re-emits the block with a derived salt. | |
| 564 | + * | |
| 565 | + * Order matters, and NOT the way it first appears. Flushing before the | |
| 566 | + * rewrite looks right — it would drop the old unnamespaced entries rather | |
| 567 | + * than stranding them — but the cache object serving this request was | |
| 568 | + * constructed from the OLD, salt-less config. Asking it to flush is asking | |
| 569 | + * an unsalted object to purge, which on Redis used to mean FLUSHDB and on | |
| 570 | + * Memcached means flush_all(): either one destroys every neighbouring site | |
| 571 | + * sharing the server. That is the exact failure this migration exists to | |
| 572 | + * prevent, so we never flush through the stale object. | |
| 573 | + * | |
| 574 | + * Writing the config first means the NEXT request loads a properly salted | |
| 575 | + * drop-in and simply starts using the new namespace. The old unnamespaced | |
| 576 | + * keys are orphaned rather than deleted; they expire on their own, and they | |
| 577 | + * are unreachable in the meantime because nothing builds those keys any | |
| 578 | + * more. | |
| 579 | + * | |
| 580 | + * @return bool True when the install is namespaced afterwards. | |
| 581 | + */ | |
| 582 | + private static function backfill_key_salt(): bool { | |
| 583 | + $module = new self(); | |
| 584 | + $settings = $module->get_settings(); | |
| 585 | + $written = defined( 'XSPEED_OC_SALT' ) ? (string) constant( 'XSPEED_OC_SALT' ) : ''; | |
| 586 | + | |
| 587 | + // Nothing written yet — the original backfill case (an install that | |
| 588 | + // enabled the object cache before a salt was emitted at all). | |
| 589 | + if ( '' === $written ) { | |
| 590 | + return Object_Cache::write_wp_config( $settings ); | |
| 591 | + } | |
| 592 | + | |
| 593 | + // A salt IS written. Re-sync only when the user's typed Cache Key | |
| 594 | + // Prefix disagrees with it, which is the ACL-remediation path: on a | |
| 595 | + // namespaced host the admin types the host's "Redis Object Cache Key" | |
| 596 | + // to stop NOPERM denials, but saving settings does not touch | |
| 597 | + // wp-config — only enable() and this backfill do. Without this | |
| 598 | + // comparison the drop-in kept reading the old constant while the | |
| 599 | + // probe key used the new prefix, so Test connection reported success | |
| 600 | + // while real writes were still denied: the same probe-vs-reality | |
| 601 | + // divergence issue 2 set out to remove, just on a narrower path. | |
| 602 | + // | |
| 603 | + // Deliberately compared against the TYPED prefix, not | |
| 604 | + // effective_salt(): effective_salt() returns the written constant | |
| 605 | + // when the prefix is blank (so a warm cache is never orphaned by a | |
| 606 | + // re-derivation), which would make this a no-op comparison. | |
| 607 | + $typed = isset( $settings['key_prefix'] ) ? (string) $settings['key_prefix'] : ''; | |
| 608 | + if ( '' === $typed || $typed === $written ) { | |
| 609 | + return true; // Correctly namespaced — leave the warm cache alone. | |
| 610 | + } | |
| 611 | + | |
| 612 | + return Object_Cache::write_wp_config( $settings ); | |
| 613 | + } | |
| 614 | + | |
| 123 | 615 | public function rest_routes(): array { |
| 124 | 616 | $default = parent::rest_routes(); |
| 125 | 617 | return array_merge( |
| 126 | 618 | $default, |
| @@ -159,9 +651,23 @@ | ||
| 159 | 651 | ); |
| 160 | 652 | } |
| 161 | 653 | |
| 162 | 654 | public function rest_detect( \WP_REST_Request $request ) { |
| 163 | - return rest_ensure_response( Object_Cache::detect() ); | |
| 655 | + /* | |
| 656 | + * Carry the write probe alongside detection. `detect()` answers "is a | |
| 657 | + * drop-in installed and which backend" -- it cannot see that the | |
| 658 | + * backend is CONNECTED but refusing writes, which is what a key prefix | |
| 659 | + * outside an ACL namespace does (NOPERM, swallowed by the drop-in). The | |
| 660 | + * probe recorded on save knows; until this it had no reader outside | |
| 661 | + * WP-CLI, so the panel kept saying "Redis ready" over a cache that | |
| 662 | + * stored nothing. (#398) | |
| 663 | + */ | |
| 664 | + $detect = Object_Cache::detect( true ); | |
| 665 | + $failure = self::live_write_failure(); | |
| 666 | + if ( null !== $failure ) { | |
| 667 | + $detect['write_probe'] = $failure; | |
| 668 | + } | |
| 669 | + return rest_ensure_response( $detect ); | |
| 164 | 670 | } |
| 165 | 671 | |
| 166 | 672 | public function rest_flush( \WP_REST_Request $request ) { |
| 167 | 673 | $ok = Object_Cache::flush(); |
| @@ -185,16 +691,55 @@ | ||
| 185 | 691 | * Merge any settings sent in the request body over the saved settings, so |
| 186 | 692 | * the UI can "Test connection" with unsaved values. Only known keys pass. |
| 187 | 693 | */ |
| 188 | 694 | private function settings_with_overrides( \WP_REST_Request $request ): array { |
| 189 | - $settings = $this->get_settings(); | |
| 190 | - $body = $request->get_json_params(); | |
| 191 | - if ( is_array( $body ) ) { | |
| 192 | - foreach ( $settings as $key => $value ) { | |
| 193 | - if ( array_key_exists( $key, $body ) ) { | |
| 194 | - $settings[ $key ] = $body[ $key ]; | |
| 195 | - } | |
| 695 | + $body = $request->get_json_params(); | |
| 696 | + return self::merge_overrides( | |
| 697 | + $this->get_settings(), | |
| 698 | + is_array( $body ) ? $body : array(), | |
| 699 | + $this->settings_schema() | |
| 700 | + ); | |
| 701 | + } | |
| 702 | + | |
| 703 | + /** | |
| 704 | + * Overlay request-body values onto the stored settings for a one-off "Test | |
| 705 | + * connection" — but NEVER let a masked secret echoed from the panel overwrite | |
| 706 | + * the real stored value. The panel holds `Redi••••CRET`; without this guard, | |
| 707 | + * clicking Test connection authenticates Redis with the mask and a correct | |
| 708 | + * password reports as wrong. A genuinely new (typed) password still applies, | |
| 709 | + * and an explicit empty value still tests the no-auth case. Static + pure so | |
| 710 | + * it's unit-testable without a REST request. (QA B3) | |
| 711 | + * | |
| 712 | + * @param array<string,mixed> $settings Stored, decrypted settings. | |
| 713 | + * @param array<string,mixed> $body Request overrides. | |
| 714 | + * @param array<string,array> $schema The module schema (for secret detection). | |
| 715 | + * @return array<string,mixed> | |
| 716 | + */ | |
| 717 | + public static function merge_overrides( array $settings, array $body, array $schema ): array { | |
| 718 | + foreach ( $settings as $key => $value ) { | |
| 719 | + if ( ! array_key_exists( $key, $body ) ) { | |
| 720 | + continue; | |
| 196 | 721 | } |
| 722 | + if ( isset( $schema[ $key ] ) | |
| 723 | + && \XSpeed\Settings_Manager::is_secret_field( $key, $schema[ $key ] ) | |
| 724 | + && \XSpeed\Settings_Manager::is_masked_secret( (string) $body[ $key ] ) ) { | |
| 725 | + continue; | |
| 726 | + } | |
| 727 | + // A field pinned by a wp-config.php constant is not overridable. Two | |
| 728 | + // reasons, either sufficient: "Test connection" must exercise the | |
| 729 | + // config the drop-in actually uses, or it answers a question nobody | |
| 730 | + // asked; and an overridable host turns this admin endpoint into a | |
| 731 | + // request-forgery probe against arbitrary internal addresses. The | |
| 732 | + // panel posts every field it rendered, so the pinned value arrives | |
| 733 | + // in the body on a normal Test click too. (#398) | |
| 734 | + // write_blocking_constant(), not effective_constant(): a value we | |
| 735 | + // wrote ourselves is this module's own storage, so the admin may | |
| 736 | + // still type over it. Only somebody else's define is protected. | |
| 737 | + if ( isset( $schema[ $key ] ) | |
| 738 | + && null !== \XSpeed\Settings_Manager::write_blocking_constant( self::SLUG, $key, $schema[ $key ] ) ) { | |
| 739 | + continue; | |
| 740 | + } | |
| 741 | + $settings[ $key ] = $body[ $key ]; | |
| 197 | 742 | } |
| 198 | 743 | return $settings; |
| 199 | 744 | } |
| 200 | 745 | |
| @@ -204,12 +749,22 @@ | ||
| 204 | 749 | |
| 205 | 750 | public function rest_enable( \WP_REST_Request $request ) { |
| 206 | 751 | // Persist any settings sent with the enable call first, then act on them. |
| 207 | 752 | $body = $request->get_json_params(); |
| 753 | + // `takeover` is an action, not a setting: take it out before the body | |
| 754 | + // is saved as the settings row. Sent in the body rather than the query | |
| 755 | + // string because on plain permalinks the REST base already carries | |
| 756 | + // `?rest_route=`. (#686) | |
| 757 | + $takeover = is_array( $body ) && ! empty( $body['takeover'] ) | |
| 758 | + ? rest_sanitize_boolean( $body['takeover'] ) | |
| 759 | + : rest_sanitize_boolean( $request->get_param( 'takeover' ) ); | |
| 760 | + if ( is_array( $body ) ) { | |
| 761 | + unset( $body['takeover'] ); | |
| 762 | + } | |
| 208 | 763 | if ( is_array( $body ) && ! empty( $body ) ) { |
| 209 | 764 | \XSpeed\Settings_Manager::update( self::SLUG, $body ); |
| 210 | 765 | } |
| 211 | - $result = Object_Cache::enable( $this->get_settings() ); | |
| 766 | + $result = Object_Cache::enable( $this->get_settings(), array( 'takeover' => $takeover ) ); | |
| 212 | 767 | |
| 213 | 768 | if ( $result['ok'] && class_exists( '\\XSpeed\\Activity_Log' ) ) { |
| 214 | 769 | \XSpeed\Activity_Log::record( |
| 215 | 770 | 'object_cache_enabled', |
| @@ -220,9 +775,11 @@ | ||
| 220 | 775 | return rest_ensure_response( $result ); |
| 221 | 776 | } |
| 222 | 777 | |
| 223 | 778 | public function rest_disable( \WP_REST_Request $request ) { |
| 224 | - $result = Object_Cache::disable(); | |
| 779 | + $result = Object_Cache::disable( | |
| 780 | + array( 'restore' => rest_sanitize_boolean( $request->get_param( 'restore' ) ) ) | |
| 781 | + ); | |
| 225 | 782 | if ( $result['ok'] && class_exists( '\\XSpeed\\Activity_Log' ) ) { |
| 226 | 783 | \XSpeed\Activity_Log::record( |
| 227 | 784 | 'object_cache_disabled', |
| 228 | 785 | 'Object cache disabled.', |
| @@ -236,16 +793,39 @@ | ||
| 236 | 793 | return array( |
| 237 | 794 | array( |
| 238 | 795 | 'name' => 'xspeed objcache', |
| 239 | 796 | 'callback' => array( $this, 'cli_handler' ), |
| 240 | - 'shortdesc' => 'Show object cache status, flush, or print the wp-config snippet.', | |
| 797 | + 'shortdesc' => 'Show object cache status, read or write a setting, flush, or print the wp-config snippet.', | |
| 798 | + 'ai_hint' => 'Is a persistent object cache (Redis/Memcached) connected and working? Use for slow admin pages, high database load, or "should I add Redis" questions — it reports the backend, connection health and hit rate. `get`/`set <key> [value]` read and write individual settings; `status` also reports whether each value comes from wp-config.php or the database.', | |
| 241 | 799 | 'synopsis' => array( |
| 242 | 800 | array( |
| 243 | 801 | 'type' => 'positional', |
| 244 | 802 | 'name' => 'action', |
| 245 | - 'options' => array( 'status', 'flush', 'snippet', 'enable', 'disable', 'test' ), | |
| 803 | + 'options' => array( 'status', 'flush', 'snippet', 'enable', 'disable', 'test', 'get', 'set', 'override', 'revert' ), | |
| 246 | 804 | 'optional' => true, |
| 247 | 805 | ), |
| 806 | + array( | |
| 807 | + 'type' => 'positional', | |
| 808 | + 'name' => 'key', | |
| 809 | + 'optional' => true, | |
| 810 | + ), | |
| 811 | + array( | |
| 812 | + 'type' => 'positional', | |
| 813 | + 'name' => 'value', | |
| 814 | + 'optional' => true, | |
| 815 | + ), | |
| 816 | + array( | |
| 817 | + 'type' => 'flag', | |
| 818 | + 'name' => 'takeover', | |
| 819 | + 'description' => 'With enable: switch from the plugin that owns object-cache.php (backs it up, turns that plugin off, installs xSpeed, undoes everything on failure).', | |
| 820 | + 'optional' => true, | |
| 821 | + ), | |
| 822 | + array( | |
| 823 | + 'type' => 'flag', | |
| 824 | + 'name' => 'restore', | |
| 825 | + 'description' => 'With disable: put back the plugin xSpeed switched from.', | |
| 826 | + 'optional' => true, | |
| 827 | + ), | |
| 248 | 828 | ), |
| 249 | 829 | ), |
| 250 | 830 | ); |
| 251 | 831 | } |
| @@ -258,9 +838,139 @@ | ||
| 258 | 838 | \WP_CLI::log( 'drop-in installed: ' . ( $d['drop_in_installed'] ? 'yes' : 'no' ) ); |
| 259 | 839 | \WP_CLI::log( 'label: ' . $d['drop_in_label'] ); |
| 260 | 840 | \WP_CLI::log( 'backend: ' . $d['backend'] ); |
| 261 | 841 | \WP_CLI::log( 'ext object cache: ' . ( $d['wp_cache_active'] ? 'yes' : 'no' ) ); |
| 842 | + | |
| 843 | + // A backend that connects but refuses WRITES looks identical to | |
| 844 | + // a healthy one everywhere else -- that is the whole failure. | |
| 845 | + $probe = self::live_write_failure(); | |
| 846 | + if ( null !== $probe ) { | |
| 847 | + \WP_CLI::warning( | |
| 848 | + 'writes refused: ' . ( $probe['message'] ?: 'unknown error' ) | |
| 849 | + . ' — the cache is connected but storing nothing.' | |
| 850 | + ); | |
| 851 | + } | |
| 852 | + | |
| 853 | + // Per value, where it came from. On a host-provisioned site the | |
| 854 | + // difference between "wp-config.php" and "database" is the whole | |
| 855 | + // question when the cache is not behaving. (#398) | |
| 856 | + \WP_CLI::log( '' ); | |
| 857 | + \WP_CLI::log( 'settings:' ); | |
| 858 | + $settings = \XSpeed\Settings_Manager::get_public( self::SLUG ); | |
| 859 | + $origins = \XSpeed\Settings_Manager::origins( self::SLUG ); | |
| 860 | + $schema = $this->settings_schema(); | |
| 861 | + foreach ( $schema as $key => $spec ) { | |
| 862 | + $origin = $origins[ $key ] ?? array( | |
| 863 | + 'source' => 'default', | |
| 864 | + 'constant' => null, | |
| 865 | + ); | |
| 866 | + $source = 'constant' === $origin['source'] | |
| 867 | + ? 'wp-config.php: ' . $origin['constant'] | |
| 868 | + : $origin['source']; | |
| 869 | + \WP_CLI::log( | |
| 870 | + sprintf( | |
| 871 | + ' %-20s %-24s [%s]', | |
| 872 | + $key, | |
| 873 | + self::scalar_for_display( $settings[ $key ] ?? null ), | |
| 874 | + $source | |
| 875 | + ) | |
| 876 | + ); | |
| 877 | + } | |
| 262 | 878 | return; |
| 879 | + case 'override': | |
| 880 | + case 'revert': | |
| 881 | + $key = $args[1] ?? ''; | |
| 882 | + $schema = $this->settings_schema(); | |
| 883 | + if ( '' === $key || ! array_key_exists( $key, $schema ) ) { | |
| 884 | + \WP_CLI::error( 'Unknown setting: ' . ( '' === $key ? '(none given)' : $key ) . '. Run `wp xspeed objcache status` for the list.' ); | |
| 885 | + } | |
| 886 | + $on = 'override' === $action; | |
| 887 | + if ( $on && null === \XSpeed\Settings_Manager::constant_source( $schema[ $key ] ) ) { | |
| 888 | + \WP_CLI::error( sprintf( '"%s" is not defined in wp-config.php, so there is nothing to override.', $key ) ); | |
| 889 | + } | |
| 890 | + /* | |
| 891 | + * Reverting hands a field BACK to the host, so it needs a host | |
| 892 | + * define to hand it back to, and it has to REMOVE our own | |
| 893 | + * define rather than only dropping the override entry -- ours | |
| 894 | + * outranks the host's, so leaving it in place meant the field | |
| 895 | + * kept our value and a later credential rotation was ignored | |
| 896 | + * for good. Both rules live in Settings_Manager::revert() so | |
| 897 | + * this command and the panel's button cannot drift. (#398) | |
| 898 | + */ | |
| 899 | + $foreign = null; | |
| 900 | + if ( $on ) { | |
| 901 | + \XSpeed\Settings_Manager::set_override( self::SLUG, $key, true ); | |
| 902 | + } else { | |
| 903 | + $reverted = \XSpeed\Settings_Manager::revert( self::SLUG, $key ); | |
| 904 | + if ( is_wp_error( $reverted ) ) { | |
| 905 | + \WP_CLI::error( | |
| 906 | + 'xspeed_nothing_to_revert' === $reverted->get_error_code() | |
| 907 | + ? sprintf( | |
| 908 | + '"%s" is not set in wp-config.php by your host, so there is nothing to revert to. Set it to the value you want with `wp xspeed objcache set %s <value>`.', | |
| 909 | + $key, | |
| 910 | + $key | |
| 911 | + ) | |
| 912 | + : $reverted->get_error_message() | |
| 913 | + ); | |
| 914 | + } | |
| 915 | + $foreign = $reverted; | |
| 916 | + } | |
| 917 | + | |
| 918 | + $origin = \XSpeed\Settings_Manager::origins( self::SLUG )[ $key ] ?? array( 'source' => 'db' ); | |
| 919 | + \WP_CLI::success( | |
| 920 | + $on | |
| 921 | + ? sprintf( '%s is now managed here. Set it with `wp xspeed objcache set %s <value>`.', $key, $key ) | |
| 922 | + : sprintf( '%s handed back to your host\'s %s.', $key, (string) $foreign ) | |
| 923 | + ); | |
| 924 | + return; | |
| 925 | + case 'get': | |
| 926 | + $key = $args[1] ?? ''; | |
| 927 | + if ( '' === $key || ! array_key_exists( $key, $this->settings_schema() ) ) { | |
| 928 | + \WP_CLI::error( 'Unknown setting: ' . ( '' === $key ? '(none given)' : $key ) . '. Run `wp xspeed objcache status` for the list.' ); | |
| 929 | + } | |
| 930 | + // get_public(), so a credential is never printed to a terminal | |
| 931 | + // or captured in a CI log. | |
| 932 | + $settings = \XSpeed\Settings_Manager::get_public( self::SLUG ); | |
| 933 | + \WP_CLI::log( self::scalar_for_display( $settings[ $key ] ?? null ) ); | |
| 934 | + return; | |
| 935 | + case 'set': | |
| 936 | + $key = $args[1] ?? ''; | |
| 937 | + if ( '' === $key || ! array_key_exists( $key, $this->settings_schema() ) ) { | |
| 938 | + \WP_CLI::error( 'Unknown setting: ' . ( '' === $key ? '(none given)' : $key ) . '. Run `wp xspeed objcache status` for the list.' ); | |
| 939 | + } | |
| 940 | + if ( ! array_key_exists( 2, $args ) ) { | |
| 941 | + \WP_CLI::error( 'No value given. Usage: wp xspeed objcache set <key> <value>' ); | |
| 942 | + } | |
| 943 | + | |
| 944 | + // Fail loudly rather than writing a row that get() will never | |
| 945 | + // read back. A silent no-op is the worst outcome here: the | |
| 946 | + // automation reports success and nothing changed. (#398) | |
| 947 | + $locked = \XSpeed\Settings_Manager::locked_in_input( self::SLUG, array( $key => $args[2] ) ); | |
| 948 | + if ( isset( $locked[ $key ] ) ) { | |
| 949 | + \WP_CLI::error( | |
| 950 | + sprintf( | |
| 951 | + '"%1$s" is defined in wp-config.php as %2$s, so it cannot be set here. Edit that constant, or run `wp xspeed objcache override %1$s` to manage it here instead.', | |
| 952 | + $key, | |
| 953 | + $locked[ $key ] | |
| 954 | + ) | |
| 955 | + ); | |
| 956 | + } | |
| 957 | + | |
| 958 | + $this->update_settings( array( $key => $args[2] ) ); | |
| 959 | + | |
| 960 | + // Read back rather than echoing the input: coercion may have | |
| 961 | + // clamped or rejected it, and reporting the input would claim a | |
| 962 | + // write that did not land as typed. | |
| 963 | + // | |
| 964 | + // From the OPTION ROW, not get_public(): the save also rewrites | |
| 965 | + // our wp-config block, but PHP has already defined those | |
| 966 | + // constants for this request and cannot redefine them -- so | |
| 967 | + // get_public() would resolve the constant and report the value | |
| 968 | + // from BEFORE the write, making a successful save look ignored. | |
| 969 | + // The row is what the next request's block was built from. (#398) | |
| 970 | + $after = \XSpeed\Settings_Manager::get_public( self::SLUG, true ); | |
| 971 | + \WP_CLI::success( $key . ' = ' . self::scalar_for_display( $after[ $key ] ?? null ) ); | |
| 972 | + return; | |
| 263 | 973 | case 'flush': |
| 264 | 974 | $ok = Object_Cache::flush(); |
| 265 | 975 | $ok ? \WP_CLI::success( 'Flushed.' ) : \WP_CLI::error( 'Flush failed.' ); |
| 266 | 976 | return; |
| @@ -271,16 +981,80 @@ | ||
| 271 | 981 | $t = Object_Cache::test_connection( $this->get_settings() ); |
| 272 | 982 | $t['ok'] ? \WP_CLI::success( $t['message'] ) : \WP_CLI::error( $t['message'] ); |
| 273 | 983 | return; |
| 274 | 984 | case 'enable': |
| 275 | - $r = Object_Cache::enable( $this->get_settings() ); | |
| 985 | + $r = Object_Cache::enable( | |
| 986 | + $this->get_settings(), | |
| 987 | + array( 'takeover' => ! empty( $assoc['takeover'] ) ) | |
| 988 | + ); | |
| 989 | + if ( ! $r['ok'] && ! empty( $r['needs_takeover'] ) && Object_Cache_Takeover::STRATEGY_REFUSE !== ( $r['owner']['strategy'] ?? '' ) ) { | |
| 990 | + // This handler also answers MCP (through Cli_Bridge), where | |
| 991 | + // the switch is an argument, not a flag. | |
| 992 | + \WP_CLI::error( $r['message'] . ' To switch, run again with --takeover (MCP: takeover: true).' ); | |
| 993 | + } | |
| 276 | 994 | $r['ok'] ? \WP_CLI::success( $r['message'] ) : \WP_CLI::error( $r['message'] ); |
| 277 | 995 | return; |
| 278 | 996 | case 'disable': |
| 279 | - $r = Object_Cache::disable(); | |
| 997 | + $r = Object_Cache::disable( array( 'restore' => ! empty( $assoc['restore'] ) ) ); | |
| 998 | + // Disabling worked; a restore that could not complete is a | |
| 999 | + // warning, not a failed command. | |
| 1000 | + if ( $r['ok'] && false === ( $r['restored'] ?? null ) ) { | |
| 1001 | + \WP_CLI::warning( $r['message'] ); | |
| 1002 | + \WP_CLI::success( 'Object cache disabled.' ); | |
| 1003 | + return; | |
| 1004 | + } | |
| 280 | 1005 | $r['ok'] ? \WP_CLI::success( $r['message'] ) : \WP_CLI::error( $r['message'] ); |
| 281 | 1006 | return; |
| 282 | 1007 | default: |
| 283 | 1008 | \WP_CLI::error( "Unknown action: $action" ); |
| 284 | 1009 | } |
| 1010 | + } | |
| 1011 | + | |
| 1012 | + /** | |
| 1013 | + * Render one setting for a terminal. Bools read as true/false rather than | |
| 1014 | + * 1/"", and an empty string is shown as (empty) so a blank line is never | |
| 1015 | + * mistaken for a missing key. | |
| 1016 | + * | |
| 1017 | + * @param mixed $value Setting value, already masked if secret. | |
| 1018 | + */ | |
| 1019 | + private static function scalar_for_display( $value ): string { | |
| 1020 | + if ( is_bool( $value ) ) { | |
| 1021 | + return $value ? 'true' : 'false'; | |
| 1022 | + } | |
| 1023 | + if ( null === $value ) { | |
| 1024 | + return '(unset)'; | |
| 1025 | + } | |
| 1026 | + if ( is_array( $value ) ) { | |
| 1027 | + return (string) wp_json_encode( $value ); | |
| 1028 | + } | |
| 1029 | + $value = (string) $value; | |
| 1030 | + return '' === $value ? '(empty)' : $value; | |
| 1031 | + } | |
| 1032 | + | |
| 1033 | + /** | |
| 1034 | + * The object cache is on when OUR drop-in is installed and actually | |
| 1035 | + * persisting -- not when a backend host is merely typed into the | |
| 1036 | + * settings. `detect()` reads the running instance, so a drop-in that is | |
| 1037 | + * installed but degraded (connected to nothing) correctly reports off | |
| 1038 | + * rather than claiming a cache the site is not getting. (#363) | |
| 1039 | + */ | |
| 1040 | + public function is_active(): ?bool { | |
| 1041 | + $state = Object_Cache::detect(); | |
| 1042 | + return ! empty( $state['persistent'] ); | |
| 1043 | + } | |
| 1044 | + | |
| 1045 | + /** | |
| 1046 | + * Configured is not the same as working, and the difference is the whole | |
| 1047 | + * point here -- a drop-in connected to nothing reports on to WordPress | |
| 1048 | + * while persisting no data. Report what is actually happening. | |
| 1049 | + */ | |
| 1050 | + public function active_reason(): ?string { | |
| 1051 | + $state = Object_Cache::detect(); | |
| 1052 | + if ( ! empty( $state['persistent'] ) ) { | |
| 1053 | + return __( 'The object cache drop-in is installed and storing data. This is measured from the running cache, not from the settings on this page.', 'xspeed' ); | |
| 1054 | + } | |
| 1055 | + if ( ! empty( $state['degraded'] ) ) { | |
| 1056 | + return __( 'The drop-in is installed but is not storing anything, so this counts as off. Check the connection settings below.', 'xspeed' ); | |
| 1057 | + } | |
| 1058 | + return __( 'No object cache is running. Entering a host below does not switch it on by itself -- the drop-in has to be installed and connect successfully.', 'xspeed' ); | |
| 285 | 1059 | } |
| 286 | 1060 | } |