| 1 |
<?php |
| 2 |
|
| 3 |
if (!defined('ABSPATH')) { |
| 4 |
exit; |
| 5 |
} |
| 6 |
|
| 7 |
require_once __DIR__ . '/MysqlServerStateProbe.php'; |
| 8 |
require_once __DIR__ . '/PluginSchemaMetadataProbe.php'; |
| 9 |
require_once __DIR__ . '/RollupFreshnessProbe.php'; |
| 10 |
require_once __DIR__ . '/FeedbackEnvironmentExtras_HostProbes.php'; |
| 11 |
require_once __DIR__ . '/FeedbackEnvironmentExtras_PlatformFingerprint.php'; |
| 12 |
require_once __DIR__ . '/FeedbackEnvironmentExtras_CacheFingerprint.php'; |
| 13 |
require_once __DIR__ . '/FeedbackEnvironmentExtras_DebugLogSignatures.php'; |
| 14 |
require_once __DIR__ . '/FeedbackTransportLog.php'; |
| 15 |
require_once dirname(__DIR__) . '/services/PostResponseWorkerBudget.php'; |
| 16 |
|
| 17 |
/** |
| 18 |
* Environment-extras passthrough probes for the feedback payload's JSON column. |
| 19 |
* |
| 20 |
* Orchestrates a set of best-effort diagnostic probes about the server |
| 21 |
* environment (MySQL globals, disk headroom, PHP SAPI, hosting class, |
| 22 |
* etc.) and packages them into a keyed array for the `environment_extras` |
| 23 |
* field of the feedback payload. |
| 24 |
* |
| 25 |
* This class owns ONLY the probe registry and the failure-isolation |
| 26 |
* wrapper. The probe implementations live in six collaborator classes, |
| 27 |
* partitioned by the subject each one observes: |
| 28 |
* - MysqlServerStateProbe: the database server's own state via $wpdb |
| 29 |
* (SHOW GLOBAL/SESSION VARIABLES, SHOW GLOBAL STATUS, SHOW PROCESSLIST). |
| 30 |
* No plugin table is named in it. |
| 31 |
* - PluginSchemaMetadataProbe: this plugin's own storage shape via |
| 32 |
* information_schema and SHOW INDEX (table sizes, index cardinality, |
| 33 |
* JOIN-hot column collations). |
| 34 |
* - RollupFreshnessProbe: redirects-hits rollup staleness, read live |
| 35 |
* through the logs_repository service (no SQL of its own). |
| 36 |
* - FeedbackEnvironmentExtras_HostProbes: dynamic PHP/OS/WP runtime |
| 37 |
* state (opcache, filesystem headroom, open_basedir, timezone, |
| 38 |
* multisite role, htaccess writability, lifecycle). |
| 39 |
* - FeedbackEnvironmentExtras_PlatformFingerprint: static platform |
| 40 |
* identity (hosting class, control panel, PHP execution stack) -- |
| 41 |
* marker-table scans that rarely change for the life of the install. |
| 42 |
* - FeedbackEnvironmentExtras_CacheFingerprint: which cache implementation |
| 43 |
* owns the request caches -- who INSTALLED it (drop-in headers) and what |
| 44 |
* is actually RUNNING (constants, classes, extensions), which disagree on |
| 45 |
* a site that has switched caching plugins. |
| 46 |
* - FeedbackEnvironmentExtras_DebugLogSignatures: tail-read of the |
| 47 |
* plugin debug log + PII-stripping signature normalization for |
| 48 |
* `recent_error_signatures`. |
| 49 |
* |
| 50 |
* Each probe is wrapped by recordProbe() so a single probe failure |
| 51 |
* cannot blank the others or block the support send. Failures emit a |
| 52 |
* marker key `<probe>_error` with a short slug so the server side can |
| 53 |
* tell "no data" from "probe failed." |
| 54 |
* |
| 55 |
* Used by ABJ_404_Solution_FeedbackTransport via composition: |
| 56 |
* $extras = (new ABJ_404_Solution_FeedbackEnvironmentExtras())->collect(); |
| 57 |
* |
| 58 |
* The probe set is documented in detail in |
| 59 |
* docs/bruno-failure-modes-2026-05-13.md (server-side correlation |
| 60 |
* targets) and pinned by tests/FeedbackTransportEnvironmentExtrasTest. |
| 61 |
*/ |
| 62 |
class ABJ_404_Solution_FeedbackEnvironmentExtras { |
| 63 |
|
| 64 |
/** @var ABJ_404_Solution_MysqlServerStateProbe */ |
| 65 |
private $server; |
| 66 |
|
| 67 |
/** @var ABJ_404_Solution_PluginSchemaMetadataProbe */ |
| 68 |
private $schema; |
| 69 |
|
| 70 |
/** @var ABJ_404_Solution_RollupFreshnessProbe */ |
| 71 |
private $rollup; |
| 72 |
|
| 73 |
/** @var ABJ_404_Solution_FeedbackEnvironmentExtras_HostProbes */ |
| 74 |
private $host; |
| 75 |
|
| 76 |
/** @var ABJ_404_Solution_FeedbackEnvironmentExtras_PlatformFingerprint */ |
| 77 |
private $platform; |
| 78 |
|
| 79 |
/** @var ABJ_404_Solution_FeedbackEnvironmentExtras_CacheFingerprint */ |
| 80 |
private $cache; |
| 81 |
|
| 82 |
/** @var ABJ_404_Solution_FeedbackEnvironmentExtras_DebugLogSignatures */ |
| 83 |
private $debugLog; |
| 84 |
|
| 85 |
public function __construct() { |
| 86 |
$this->server = new ABJ_404_Solution_MysqlServerStateProbe(); |
| 87 |
$this->schema = new ABJ_404_Solution_PluginSchemaMetadataProbe(); |
| 88 |
$this->rollup = new ABJ_404_Solution_RollupFreshnessProbe(); |
| 89 |
$this->host = new ABJ_404_Solution_FeedbackEnvironmentExtras_HostProbes(); |
| 90 |
$this->platform = new ABJ_404_Solution_FeedbackEnvironmentExtras_PlatformFingerprint(); |
| 91 |
$this->cache = new ABJ_404_Solution_FeedbackEnvironmentExtras_CacheFingerprint(); |
| 92 |
$this->debugLog = new ABJ_404_Solution_FeedbackEnvironmentExtras_DebugLogSignatures(); |
| 93 |
} |
| 94 |
|
| 95 |
/** |
| 96 |
* Best-effort diagnostic passthrough for the server's JSON column. The |
| 97 |
* typed columns cover plugin version + WP/PHP/DB identity + content |
| 98 |
* counts, but they cannot cover the operational signals that decide |
| 99 |
* whether a query times out on a real shared host: MySQL memory globals |
| 100 |
* (innodb_buffer_pool_size, tmp_table_size), disk headroom, |
| 101 |
* and PHP SAPI specifics that the server doesn't pre-declare. |
| 102 |
* |
| 103 |
* Every probe is wrapped in recordProbe() so a failed lookup never |
| 104 |
* blocks the support send and surfaces a `<probe>_error` marker |
| 105 |
* with a short server-groupable slug. Filterable via the |
| 106 |
* `abj404_environment_extras` filter so operators can append |
| 107 |
* site-specific diagnostics (or strip fields for privacy) before the |
| 108 |
* payload is sent. |
| 109 |
* |
| 110 |
* @return array<string, mixed> |
| 111 |
*/ |
| 112 |
public function collect(): array { |
| 113 |
$extras = array(); |
| 114 |
$server = $this->server; |
| 115 |
$schema = $this->schema; |
| 116 |
$rollup = $this->rollup; |
| 117 |
$host = $this->host; |
| 118 |
$platform = $this->platform; |
| 119 |
$cache = $this->cache; |
| 120 |
$debugLog = $this->debugLog; |
| 121 |
|
| 122 |
// MySQL global variables: the binding constraints for slow |
| 123 |
// JOIN / GROUP BY on Bruno-class sites. SHOW GLOBAL VARIABLES |
| 124 |
// is read-only, no plugin tables involved. |
| 125 |
$this->recordProbe($extras, 'mysql_globals', function () use ($server) { return $server->collectMysqlGlobals(); }, array()); |
| 126 |
|
| 127 |
// Live SHOW SESSION VARIABLES probe for this connection. Some hosts |
| 128 |
// override operational variables per-session (poolers, connection |
| 129 |
// init hooks), so this can diverge from mysql_globals. |
| 130 |
$this->recordProbe($extras, 'mysql_session_probe', function () use ($server) { return $server->collectMysqlSessionVariables(); }, array()); |
| 131 |
|
| 132 |
// Disk headroom on the WP uploads directory (where the plugin's |
| 133 |
// debug log and any cron-scratch files land). "Table is full" |
| 134 |
// errors are nearly always disk-quota, not the logical |
| 135 |
// table-full condition. |
| 136 |
$this->recordProbe($extras, 'disk_free_bytes', function () use ($host) { return $host->diskFreeBytesOrThrow(); }, null); |
| 137 |
$this->recordProbe($extras, 'disk_total_bytes', function () use ($host) { return $host->diskTotalBytesOrThrow(); }, null); |
| 138 |
|
| 139 |
// PHP runtime identity beyond version. SAPI distinguishes |
| 140 |
// mod_php (per-request fork, fresh memory) from php-fpm |
| 141 |
// (long-lived worker, opcache hot). max_input_vars caps how |
| 142 |
// many POST fields the importer can accept. realpath_cache |
| 143 |
// size matters for sites with many include paths. None of it can |
| 144 |
// fail, so it is merged whole rather than registered as a probe; |
| 145 |
// the reasoning for each field lives with the values in |
| 146 |
// FeedbackEnvironmentExtras_HostProbes::collectPhpRuntimeIdentity(). |
| 147 |
$extras = array_merge($extras, $host->collectPhpRuntimeIdentity()); |
| 148 |
|
| 149 |
// Plugin table sizes beyond logsv2 (which has its own typed |
| 150 |
// column). redirects volume and logs_hits rollup size are |
| 151 |
// direct signals for the getRedirectsForViewTempTable.sql |
| 152 |
// perf class. |
| 153 |
$this->recordProbe($extras, 'plugin_tables_bytes', function () use ($schema) { return $schema->collectPluginTableSizes(); }, array()); |
| 154 |
|
| 155 |
// Redirects-hits rollup freshness signals: does the rollup table |
| 156 |
// exist, does it need a rebuild right now, when did it last |
| 157 |
// refresh/get scheduled, and how far behind is its watermark |
| 158 |
// relative to logsv2? Read live from the rollup service, the |
| 159 |
// subsystem most implicated in "the admin redirects page never |
| 160 |
// loads" reports. |
| 161 |
$this->recordProbe($extras, 'view_build_state', function () use ($rollup) { return $rollup->collectRollupFreshness(); }, array()); |
| 162 |
|
| 163 |
// SHOW PROCESSLIST row count. Indicator of shared-host MySQL |
| 164 |
// saturation: a queue of 200+ idle connections explains why |
| 165 |
// the staged build's BEGIN/COMMIT slots wait. Just the count; |
| 166 |
// no connection details (user/host) are emitted. |
| 167 |
$this->recordProbe($extras, 'active_connection_count', function () use ($server) { return $server->probeActiveConnectionCount(); }, null); |
| 168 |
|
| 169 |
// SHOW INDEX cardinality for the canonical indexes on |
| 170 |
// redirects + logs_hits + logs_hits_preagg. A degraded |
| 171 |
// cardinality (1 row, or NULL after a crash recovery) is a |
| 172 |
// sufficient explanation for a previously-fast JOIN suddenly |
| 173 |
// doing a full table scan. Shape: {table: {index: int}}. |
| 174 |
$this->recordProbe($extras, 'index_cardinality', function () use ($schema) { return $schema->probeIndexCardinality(); }, array()); |
| 175 |
|
| 176 |
// Best-effort hosting-class hint parsed from server_software |
| 177 |
// and host-specific environment markers (cPanel, hPanel, |
| 178 |
// Plesk, WP Engine, Kinsta, Pantheon, Flywheel, RunCloud, |
| 179 |
// CloudPanel). Lets server-side group heartbeats by host |
| 180 |
// class retroactively without paying for a deep fingerprint. |
| 181 |
// The database server's version SUFFIX is one of the three independent |
| 182 |
// markers that name Azure App Service, whose FPM pools can be built |
| 183 |
// with clear_env and publish no environment variable at all. Supplied |
| 184 |
// from here because $wpdb access belongs to the server-state probe, not |
| 185 |
// to the platform fingerprint (see that class's INFRASTRUCTURE_HOST_MARKERS). |
| 186 |
$this->recordProbe($extras, 'hosting_class', function () use ($platform, $server) { |
| 187 |
return $platform->probeHostingClass(array( |
| 188 |
'php_sapi' => PHP_SAPI, |
| 189 |
'db_server_version' => $server->serverVersionString(), |
| 190 |
)); |
| 191 |
}, array()); |
| 192 |
|
| 193 |
// Full-request page-cache drop-ins can own an outer output buffer. |
| 194 |
// Report only presence and the declared Plugin Name so support can |
| 195 |
// identify that foreign owner without receiving file content or paths. |
| 196 |
$this->recordProbe($extras, 'advanced_cache_dropin', function () use ($cache) { |
| 197 |
return $cache->probeCacheDropin('advanced_cache'); |
| 198 |
}, array('present' => false, 'owner' => '')); |
| 199 |
|
| 200 |
// Object-cache backend NAME, not just the on/off enum already |
| 201 |
// shipped in `object_cache`. Detect Redis / Memcached / APCu |
| 202 |
// / W3TC / LiteSpeed / WP Engine native via known constants |
| 203 |
// + wp_using_ext_object_cache(). Stale-cache reports cluster |
| 204 |
// by backend class. |
| 205 |
$this->recordProbe($extras, 'object_cache_backend', function () use ($cache) { return $cache->probeObjectCacheBackend(); }, array()); |
| 206 |
|
| 207 |
// The backend marker identifies the running cache implementation; |
| 208 |
// the drop-in header identifies which plugin installed object-cache.php. |
| 209 |
$this->recordProbe($extras, 'object_cache_dropin', function () use ($cache) { |
| 210 |
return $cache->probeCacheDropin('object_cache'); |
| 211 |
}, array('present' => false, 'owner' => '')); |
| 212 |
|
| 213 |
// SHOW GLOBAL STATUS counterpart to mysql_globals. Captures |
| 214 |
// runtime symptoms (lock waits, tmp-disk spills, aborted |
| 215 |
// connects, slow queries) that the variables can only |
| 216 |
// bound, never observe. |
| 217 |
$this->recordProbe($extras, 'mysql_status', function () use ($server) { return $server->probeMysqlStatus(); }, array()); |
| 218 |
|
| 219 |
// DB charset + collation, plus per-column collation on the |
| 220 |
// canonical JOIN keys for redirects (url, canonical_url) and |
| 221 |
// logs_hits (requested_url). Collation drift silently |
| 222 |
// disables index seeks on JOIN: symptom is "fast on staging, |
| 223 |
// slow on prod with identical data." |
| 224 |
$this->recordProbe($extras, 'db_collation', function () use ($schema) { return $schema->probeDbCollation(); }, array()); |
| 225 |
|
| 226 |
// WP + PHP timezone identity. Bruno-class sites in non-UTC |
| 227 |
// zones (pt_BR, ja_JP) sometimes show off-by-N-hours bugs |
| 228 |
// in cooldown arithmetic; capturing both lets us diff |
| 229 |
// server time vs WP time vs PHP time after the fact. |
| 230 |
$this->recordProbe($extras, 'timezone', function () use ($host) { return $host->probeTimezone(); }, array()); |
| 231 |
|
| 232 |
// Install + upgrade history. The single most useful |
| 233 |
// bifurcator for "started after upgrade Tuesday" vs |
| 234 |
// "always broken since install." Read-only from plugin |
| 235 |
// options the upgrade path already writes. |
| 236 |
$this->recordProbe($extras, 'plugin_lifecycle', function () use ($host) { return $host->probePluginLifecycle(); }, array()); |
| 237 |
|
| 238 |
// Top distinct recurring error signatures from the debug |
| 239 |
// log file over the last 7 days, capped at 5 entries. The |
| 240 |
// triggering error is captured by the report itself; this |
| 241 |
// captures the recurring error which is often different |
| 242 |
// and which the email-on-first-error path would never send. |
| 243 |
$this->recordProbe($extras, 'recent_error_signatures', function () use ($debugLog) { return $debugLog->probeRecentErrorSignatures(); }, array()); |
| 244 |
|
| 245 |
// opcache detail beyond the on/off enum already shipped |
| 246 |
// in `php_opcache_enabled`. validate_timestamps=0 + |
| 247 |
// revalidate_freq high explains "fresh install still |
| 248 |
// buggy after upgrade" reports where the host serves |
| 249 |
// cached bytecode from the prior version. |
| 250 |
$this->recordProbe($extras, 'opcache_settings', function () use ($host) { return $host->probeOpcacheSettings(); }, array()); |
| 251 |
|
| 252 |
// open_basedir restriction string (or null when not set). |
| 253 |
// Hardened shared hosts use this to box file access; |
| 254 |
// explains "permission denied" failures on paths the |
| 255 |
// plugin can otherwise write. |
| 256 |
$extras['open_basedir'] = $host->probeOpenBasedir(); |
| 257 |
|
| 258 |
// Multisite identity: is this the main site, what blog |
| 259 |
// and network are we on, is the plugin network-activated? |
| 260 |
// Behavior differs significantly across these axes |
| 261 |
// (network-active vs single-site-active changes hook |
| 262 |
// registration and upgrade scheduling). |
| 263 |
$this->recordProbe($extras, 'multisite_role', function () use ($host) { return $host->probeMultisiteRole(); }, array()); |
| 264 |
|
| 265 |
// .htaccess writability at the WP home path. When false |
| 266 |
// the plugin's Apache-rule install path cannot succeed |
| 267 |
// and we fall back to the DB-only redirect handler. |
| 268 |
// Differentiates "redirects not firing" reports between |
| 269 |
// "Apache rule never wrote" and "DB handler bug". |
| 270 |
$extras['htaccess_writable'] = $host->probeHtaccessWritable(); |
| 271 |
|
| 272 |
// /tmp filesystem free bytes. Some shared hosts have |
| 273 |
// separate /tmp quotas from the WP install path; tmp |
| 274 |
// exhaustion breaks MySQL tmp tables (Created_tmp_disk_* |
| 275 |
// counter) and PHP file uploads. disk_free_bytes on the |
| 276 |
// uploads dir cannot see this. |
| 277 |
$this->recordProbe($extras, 'tmp_free_bytes', function () use ($host) { return $host->probeTmpFreeBytesOrThrow(); }, null); |
| 278 |
|
| 279 |
if (function_exists('apply_filters')) { |
| 280 |
$filtered = apply_filters('abj404_environment_extras', $extras); |
| 281 |
if (is_array($filtered)) { |
| 282 |
$extras = $filtered; |
| 283 |
} |
| 284 |
} |
| 285 |
|
| 286 |
return $extras; |
| 287 |
} |
| 288 |
|
| 289 |
/** |
| 290 |
* Run a probe and write either its return value into $extras[$key] |
| 291 |
* on success, or a default value plus a marker $extras[$key.'_error'] |
| 292 |
* on failure. The marker is a short server-groupable slug |
| 293 |
* ('sql_failed', 'wpdb_unavailable', 'fs_unavailable', |
| 294 |
* 'invalid_shape', 'exception:<class>'), not the raw exception |
| 295 |
* message. Exception text can carry PII (paths, user-supplied |
| 296 |
* fragments) and we explicitly do not ship it. The raw message |
| 297 |
* still goes to the plugin logger so local debugging is unaffected. |
| 298 |
* |
| 299 |
* Why marker keys at all: the prior pattern (tryMixedArray returning |
| 300 |
* empty array) could not distinguish "probe succeeded with no data" |
| 301 |
* from "probe failed and we have no signal." Markers make failure |
| 302 |
* explicit so the server side does not have to guess. |
| 303 |
* |
| 304 |
* @param array<string,mixed> $extras |
| 305 |
* @param string $key |
| 306 |
* @param callable $fn |
| 307 |
* @param mixed $default Value written to $extras[$key] on failure |
| 308 |
* so downstream consumers can iterate without per-probe null |
| 309 |
* checks. |
| 310 |
* @return void |
| 311 |
*/ |
| 312 |
private function recordProbe(array &$extras, string $key, callable $fn, $default): void { |
| 313 |
try { |
| 314 |
$value = $fn(); |
| 315 |
} catch (\Throwable $e) { |
| 316 |
$extras[$key] = $default; |
| 317 |
$extras[$key . '_error'] = $this->classifyProbeError($e); |
| 318 |
ABJ_404_Solution_FeedbackTransportLog::log('warn', 'FeedbackEnvironmentExtras probe "' . $key . '" failed: ' . $e->getMessage()); |
| 319 |
return; |
| 320 |
} |
| 321 |
$extras[$key] = $value; |
| 322 |
} |
| 323 |
|
| 324 |
/** |
| 325 |
* Probe-failure slug => the lowercased message substrings that select it. |
| 326 |
* FIRST MATCH WINS, so declaration order is the precedence order: the |
| 327 |
* narrow, unambiguous causes are listed before `sql_failed`, whose needles |
| 328 |
* ('sql', 'query') are broad enough to swallow a more specific message. |
| 329 |
* |
| 330 |
* A table rather than an if/elseif chain because this is a classifier with |
| 331 |
* five branches and grows by one every time a probe learns a new way to |
| 332 |
* fail; adding a cause should be adding a row, not adding a branch. |
| 333 |
* `service_unavailable` is one such row (t_260801_071502_922): a probe |
| 334 |
* whose own collaborator service could not be resolved is a plugin-wiring |
| 335 |
* failure, not an environment failure, and the two must be groupable apart |
| 336 |
* on the server, because the wiring class is exactly what let |
| 337 |
* `view_build_state` ship empty for seven weeks without anyone noticing. |
| 338 |
* |
| 339 |
* @var array<string, array<int, string>> |
| 340 |
*/ |
| 341 |
private const PROBE_ERROR_SIGNATURES = array( |
| 342 |
'wpdb_unavailable' => array('wpdb unavailable', 'wpdb missing'), |
| 343 |
'fs_unavailable' => array('disk_free_space', 'disk_total_space', 'sys_get_temp_dir'), |
| 344 |
'service_unavailable' => array('service unavailable'), |
| 345 |
'invalid_shape' => array('invalid shape', 'non-array', 'unexpected shape'), |
| 346 |
'sql_failed' => array( |
| 347 |
'sql', 'mysql', 'mariadb', 'query', 'processlist', 'simulated db', |
| 348 |
'show global', 'show index', 'show processlist', 'information_schema', |
| 349 |
'all tables failed', 'no tables probed', |
| 350 |
), |
| 351 |
); |
| 352 |
|
| 353 |
/** |
| 354 |
* Map a thrown probe exception to a short server-groupable slug. |
| 355 |
* Matched on the message rather than the exception class because |
| 356 |
* the probe helpers all throw \RuntimeException. The message is |
| 357 |
* the differentiator. Unmatched throws degrade to |
| 358 |
* 'exception:<ShortClass>' so the slug still carries fingerprint. |
| 359 |
* |
| 360 |
* @param \Throwable $e |
| 361 |
* @return string |
| 362 |
*/ |
| 363 |
private function classifyProbeError(\Throwable $e): string { |
| 364 |
$msg = strtolower((string)$e->getMessage()); |
| 365 |
foreach (self::PROBE_ERROR_SIGNATURES as $slug => $needles) { |
| 366 |
foreach ($needles as $needle) { |
| 367 |
if (strpos($msg, $needle) !== false) { |
| 368 |
return $slug; |
| 369 |
} |
| 370 |
} |
| 371 |
} |
| 372 |
$shortClass = (new \ReflectionClass($e))->getShortName(); |
| 373 |
return 'exception:' . $shortClass; |
| 374 |
} |
| 375 |
} |
| 376 |
|
