includes/exception/MWExceptionHandler.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 use MediaWiki\Logger\LoggerFactory;
  22 use MediaWiki\MediaWikiServices;
  23 use Psr\Log\LogLevel;
  24 use Wikimedia\Rdbms\DBError;
  25
  26 /**
  27  * Handler class for MWExceptions
  28  * @ingroup Exception
  29  */
  30 class MWExceptionHandler {
  31         const CAUGHT_BY_HANDLER = 'mwe_handler'; // error reported by this exception handler
  32         const CAUGHT_BY_OTHER = 'other'; // error reported by direct logException() call
  33
  34         /**
  35          * @var string $reservedMemory
  36          */
  37         protected static $reservedMemory;
  38         /**
  39          * @var array $fatalErrorTypes
  40          */
  41         protected static $fatalErrorTypes = [
  42                 E_ERROR, E_PARSE, E_CORE_ERROR, E_COMPILE_ERROR, E_USER_ERROR,
  43                 /* HHVM's FATAL_ERROR level */ 16777217,
  44         ];
  45         /**
  46          * @var bool $handledFatalCallback
  47          */
  48         protected static $handledFatalCallback = false;
  49
  50         /**
  51          * Install handlers with PHP.
  52          */
  53         public static function installHandler() {
  54                 set_exception_handler( 'MWExceptionHandler::handleUncaughtException' );
  55                 set_error_handler( 'MWExceptionHandler::handleError' );
  56
  57                 // Reserve 16k of memory so we can report OOM fatals
  58                 self::$reservedMemory = str_repeat( ' ', 16384 );
  59                 register_shutdown_function( 'MWExceptionHandler::handleFatalError' );
  60         }
  61
  62         /**
  63          * Report an exception to the user
  64          * @param Exception|Throwable $e
  65          */
  66         protected static function report( $e ) {
  67                 try {
  68                         // Try and show the exception prettily, with the normal skin infrastructure
  69                         if ( $e instanceof MWException ) {
  70                                 // Delegate to MWException until all subclasses are handled by
  71                                 // MWExceptionRenderer and MWException::report() has been
  72                                 // removed.
  73                                 $e->report();
  74                         } else {
  75                                 MWExceptionRenderer::output( $e, MWExceptionRenderer::AS_PRETTY );
  76                         }
  77                 } catch ( Exception $e2 ) {
  78                         // Exception occurred from within exception handler
  79                         // Show a simpler message for the original exception,
  80                         // don't try to invoke report()
  81                         MWExceptionRenderer::output( $e, MWExceptionRenderer::AS_RAW, $e2 );
  82                 }
  83         }
  84
  85         /**
  86          * Roll back any open database transactions and log the stack trace of the exception
  87          *
  88          * This method is used to attempt to recover from exceptions
  89          *
  90          * @since 1.23
  91          * @param Exception|Throwable $e
  92          */
  93         public static function rollbackMasterChangesAndLog( $e ) {
  94                 $services = MediaWikiServices::getInstance();
  95                 if ( !$services->isServiceDisabled( 'DBLoadBalancerFactory' ) ) {
  96                         // Rollback DBs to avoid transaction notices. This might fail
  97                         // to rollback some databases due to connection issues or exceptions.
  98                         // However, any sane DB driver will rollback implicitly anyway.
  99                         try {
 100                                 $services->getDBLoadBalancerFactory()->rollbackMasterChanges( __METHOD__ );
 101                         } catch ( DBError $e2 ) {
 102                                 // If the DB is unreacheable, rollback() will throw an error
 103                                 // and the error report() method might need messages from the DB,
 104                                 // which would result in an exception loop. PHP may escalate such
 105                                 // errors to "Exception thrown without a stack frame" fatals, but
 106                                 // it's better to be explicit here.
 107                                 self::logException( $e2, self::CAUGHT_BY_HANDLER );
 108                         }
 109                 }
 110
 111                 self::logException( $e, self::CAUGHT_BY_HANDLER );
 112         }
 113
 114         /**
 115          * Callback to use with PHP's set_exception_handler.
 116          *
 117          * @since 1.31
 118          * @param Exception|Throwable $e
 119          */
 120         public static function handleUncaughtException( $e ) {
 121                 self::handleException( $e );
 122
 123                 // Make sure we don't claim success on exit for CLI scripts (T177414)
 124                 if ( wfIsCLI() ) {
 125                         register_shutdown_function(
 126                                 function () {
 127                                         exit( 255 );
 128                                 }
 129                         );
 130                 }
 131         }
 132
 133         /**
 134          * Exception handler which simulates the appropriate catch() handling:
 135          *
 136          *   try {
 137          *       ...
 138          *   } catch ( Exception $e ) {
 139          *       $e->report();
 140          *   } catch ( Exception $e ) {
 141          *       echo $e->__toString();
 142          *   }
 143          *
 144          * @since 1.25
 145          * @param Exception|Throwable $e
 146          */
 147         public static function handleException( $e ) {
 148                 self::rollbackMasterChangesAndLog( $e );
 149                 self::report( $e );
 150         }
 151
 152         /**
 153          * Handler for set_error_handler() callback notifications.
 154          *
 155          * Receive a callback from the interpreter for a raised error, create an
 156          * ErrorException, and log the exception to the 'error' logging
 157          * channel(s). If the raised error is a fatal error type (only under HHVM)
 158          * delegate to handleFatalError() instead.
 159          *
 160          * @since 1.25
 161          *
 162          * @param int $level Error level raised
 163          * @param string $message
 164          * @param string $file
 165          * @param int $line
 166          * @return bool
 167          *
 168          * @see logError()
 169          */
 170         public static function handleError(
 171                 $level, $message, $file = null, $line = null
 172         ) {
 173                 if ( in_array( $level, self::$fatalErrorTypes ) ) {
 174                         return call_user_func_array(
 175                                 'MWExceptionHandler::handleFatalError', func_get_args()
 176                         );
 177                 }
 178
 179                 // Map error constant to error name (reverse-engineer PHP error
 180                 // reporting)
 181                 switch ( $level ) {
 182                         case E_RECOVERABLE_ERROR:
 183                                 $levelName = 'Error';
 184                                 $severity = LogLevel::ERROR;
 185                                 break;
 186                         case E_WARNING:
 187                         case E_CORE_WARNING:
 188                         case E_COMPILE_WARNING:
 189                         case E_USER_WARNING:
 190                                 $levelName = 'Warning';
 191                                 $severity = LogLevel::WARNING;
 192                                 break;
 193                         case E_NOTICE:
 194                         case E_USER_NOTICE:
 195                                 $levelName = 'Notice';
 196                                 $severity = LogLevel::INFO;
 197                                 break;
 198                         case E_STRICT:
 199                                 $levelName = 'Strict Standards';
 200                                 $severity = LogLevel::DEBUG;
 201                                 break;
 202                         case E_DEPRECATED:
 203                         case E_USER_DEPRECATED:
 204                                 $levelName = 'Deprecated';
 205                                 $severity = LogLevel::INFO;
 206                                 break;
 207                         default:
 208                                 $levelName = 'Unknown error';
 209                                 $severity = LogLevel::ERROR;
 210                                 break;
 211                 }
 212
 213                 $e = new ErrorException( "PHP $levelName: $message", 0, $level, $file, $line );
 214                 self::logError( $e, 'error', $severity );
 215
 216                 // This handler is for logging only. Return false will instruct PHP
 217                 // to continue regular handling.
 218                 return false;
 219         }
 220
 221         /**
 222          * Dual purpose callback used as both a set_error_handler() callback and
 223          * a registered shutdown function. Receive a callback from the interpreter
 224          * for a raised error or system shutdown, check for a fatal error, and log
 225          * to the 'fatal' logging channel.
 226          *
 227          * Special handling is included for missing class errors as they may
 228          * indicate that the user needs to install 3rd-party libraries via
 229          * Composer or other means.
 230          *
 231          * @since 1.25
 232          *
 233          * @param int $level Error level raised
 234          * @param string $message Error message
 235          * @param string $file File that error was raised in
 236          * @param int $line Line number error was raised at
 237          * @param array $context Active symbol table point of error
 238          * @param array $trace Backtrace at point of error (undocumented HHVM
 239          *     feature)
 240          * @return bool Always returns false
 241          */
 242         public static function handleFatalError(
 243                 $level = null, $message = null, $file = null, $line = null,
 244                 $context = null, $trace = null
 245         ) {
 246                 // Free reserved memory so that we have space to process OOM
 247                 // errors
 248                 self::$reservedMemory = null;
 249
 250                 if ( $level === null ) {
 251                         // Called as a shutdown handler, get data from error_get_last()
 252                         if ( static::$handledFatalCallback ) {
 253                                 // Already called once (probably as an error handler callback
 254                                 // under HHVM) so don't log again.
 255                                 return false;
 256                         }
 257
 258                         $lastError = error_get_last();
 259                         if ( $lastError !== null ) {
 260                                 $level = $lastError['type'];
 261                                 $message = $lastError['message'];
 262                                 $file = $lastError['file'];
 263                                 $line = $lastError['line'];
 264                         } else {
 265                                 $level = 0;
 266                                 $message = '';
 267                         }
 268                 }
 269
 270                 if ( !in_array( $level, self::$fatalErrorTypes ) ) {
 271                         // Only interested in fatal errors, others should have been
 272                         // handled by MWExceptionHandler::handleError
 273                         return false;
 274                 }
 275
 276                 $msg = "[{exception_id}] PHP Fatal Error: {$message}";
 277
 278                 // Look at message to see if this is a class not found failure
 279                 // HHVM: Class undefined: foo
 280                 // PHP5: Class 'foo' not found
 281                 if ( preg_match( "/Class (undefined: \w+|'\w+' not found)/", $msg ) ) {
 282                         // phpcs:disable Generic.Files.LineLength
 283                         $msg = <<<TXT
 284 {$msg}
 285
 286 MediaWiki or an installed extension requires this class but it is not embedded directly in MediaWiki's git repository and must be installed separately by the end user.
 287
 288 Please see <a href="https://www.mediawiki.org/wiki/Download_from_Git#Fetch_external_libraries">mediawiki.org</a> for help on installing the required components.
 289 TXT;
 290                         // phpcs:enable
 291                 }
 292
 293                 // We can't just create an exception and log it as it is likely that
 294                 // the interpreter has unwound the stack already. If that is true the
 295                 // stacktrace we would get would be functionally empty. If however we
 296                 // have been called as an error handler callback *and* HHVM is in use
 297                 // we will have been provided with a useful stacktrace that we can
 298                 // log.
 299                 $trace = $trace ?: debug_backtrace();
 300                 $logger = LoggerFactory::getInstance( 'fatal' );
 301                 $logger->error( $msg, [
 302                         'fatal_exception' => [
 303                                 'class' => ErrorException::class,
 304                                 'message' => "PHP Fatal Error: {$message}",
 305                                 'code' => $level,
 306                                 'file' => $file,
 307                                 'line' => $line,
 308                                 'trace' => static::redactTrace( $trace ),
 309                         ],
 310                         'exception_id' => wfRandomString( 8 ),
 311                         'caught_by' => self::CAUGHT_BY_HANDLER
 312                 ] );
 313
 314                 // Remember call so we don't double process via HHVM's fatal
 315                 // notifications and the shutdown hook behavior
 316                 static::$handledFatalCallback = true;
 317                 return false;
 318         }
 319
 320         /**
 321          * Generate a string representation of an exception's stack trace
 322          *
 323          * Like Exception::getTraceAsString, but replaces argument values with
 324          * argument type or class name.
 325          *
 326          * @param Exception|Throwable $e
 327          * @return string
 328          * @see prettyPrintTrace()
 329          */
 330         public static function getRedactedTraceAsString( $e ) {
 331                 return self::prettyPrintTrace( self::getRedactedTrace( $e ) );
 332         }
 333
 334         /**
 335          * Generate a string representation of a stacktrace.
 336          *
 337          * @param array $trace
 338          * @param string $pad Constant padding to add to each line of trace
 339          * @return string
 340          * @since 1.26
 341          */
 342         public static function prettyPrintTrace( array $trace, $pad = '' ) {
 343                 $text = '';
 344
 345                 $level = 0;
 346                 foreach ( $trace as $level => $frame ) {
 347                         if ( isset( $frame['file'] ) && isset( $frame['line'] ) ) {
 348                                 $text .= "{$pad}#{$level} {$frame['file']}({$frame['line']}): ";
 349                         } else {
 350                                 // 'file' and 'line' are unset for calls via call_user_func
 351                                 // (T57634) This matches behaviour of
 352                                 // Exception::getTraceAsString to instead display "[internal
 353                                 // function]".
 354                                 $text .= "{$pad}#{$level} [internal function]: ";
 355                         }
 356
 357                         if ( isset( $frame['class'] ) && isset( $frame['type'] ) && isset( $frame['function'] ) ) {
 358                                 $text .= $frame['class'] . $frame['type'] . $frame['function'];
 359                         } elseif ( isset( $frame['function'] ) ) {
 360                                 $text .= $frame['function'];
 361                         } else {
 362                                 $text .= 'NO_FUNCTION_GIVEN';
 363                         }
 364
 365                         if ( isset( $frame['args'] ) ) {
 366                                 $text .= '(' . implode( ', ', $frame['args'] ) . ")\n";
 367                         } else {
 368                                 $text .= "()\n";
 369                         }
 370                 }
 371
 372                 $level = $level + 1;
 373                 $text .= "{$pad}#{$level} {main}";
 374
 375                 return $text;
 376         }
 377
 378         /**
 379          * Return a copy of an exception's backtrace as an array.
 380          *
 381          * Like Exception::getTrace, but replaces each element in each frame's
 382          * argument array with the name of its class (if the element is an object)
 383          * or its type (if the element is a PHP primitive).
 384          *
 385          * @since 1.22
 386          * @param Exception|Throwable $e
 387          * @return array
 388          */
 389         public static function getRedactedTrace( $e ) {
 390                 return static::redactTrace( $e->getTrace() );
 391         }
 392
 393         /**
 394          * Redact a stacktrace generated by Exception::getTrace(),
 395          * debug_backtrace() or similar means. Replaces each element in each
 396          * frame's argument array with the name of its class (if the element is an
 397          * object) or its type (if the element is a PHP primitive).
 398          *
 399          * @since 1.26
 400          * @param array $trace Stacktrace
 401          * @return array Stacktrace with arugment values converted to data types
 402          */
 403         public static function redactTrace( array $trace ) {
 404                 return array_map( function ( $frame ) {
 405                         if ( isset( $frame['args'] ) ) {
 406                                 $frame['args'] = array_map( function ( $arg ) {
 407                                         return is_object( $arg ) ? get_class( $arg ) : gettype( $arg );
 408                                 }, $frame['args'] );
 409                         }
 410                         return $frame;
 411                 }, $trace );
 412         }
 413
 414         /**
 415          * Get the ID for this exception.
 416          *
 417          * The ID is saved so that one can match the one output to the user (when
 418          * $wgShowExceptionDetails is set to false), to the entry in the debug log.
 419          *
 420          * @since 1.22
 421          * @deprecated since 1.27: Exception IDs are synonymous with request IDs.
 422          * @param Exception|Throwable $e
 423          * @return string
 424          */
 425         public static function getLogId( $e ) {
 426                 wfDeprecated( __METHOD__, '1.27' );
 427                 return WebRequest::getRequestId();
 428         }
 429
 430         /**
 431          * If the exception occurred in the course of responding to a request,
 432          * returns the requested URL. Otherwise, returns false.
 433          *
 434          * @since 1.23
 435          * @return string|false
 436          */
 437         public static function getURL() {
 438                 global $wgRequest;
 439                 if ( !isset( $wgRequest ) || $wgRequest instanceof FauxRequest ) {
 440                         return false;
 441                 }
 442                 return $wgRequest->getRequestURL();
 443         }
 444
 445         /**
 446          * Get a message formatting the exception message and its origin.
 447          *
 448          * @since 1.22
 449          * @param Exception|Throwable $e
 450          * @return string
 451          */
 452         public static function getLogMessage( $e ) {
 453                 $id = WebRequest::getRequestId();
 454                 $type = get_class( $e );
 455                 $file = $e->getFile();
 456                 $line = $e->getLine();
 457                 $message = $e->getMessage();
 458                 $url = self::getURL() ?: '[no req]';
 459
 460                 return "[$id] $url   $type from line $line of $file: $message";
 461         }
 462
 463         /**
 464          * Get a normalised message for formatting with PSR-3 log event context.
 465          *
 466          * Must be used together with `getLogContext()` to be useful.
 467          *
 468          * @since 1.30
 469          * @param Exception|Throwable $e
 470          * @return string
 471          */
 472         public static function getLogNormalMessage( $e ) {
 473                 $type = get_class( $e );
 474                 $file = $e->getFile();
 475                 $line = $e->getLine();
 476                 $message = $e->getMessage();
 477
 478                 return "[{exception_id}] {exception_url}   $type from line $line of $file: $message";
 479         }
 480
 481         /**
 482          * @param Exception|Throwable $e
 483          * @return string
 484          */
 485         public static function getPublicLogMessage( $e ) {
 486                 $reqId = WebRequest::getRequestId();
 487                 $type = get_class( $e );
 488                 return '[' . $reqId . '] '
 489                         . gmdate( 'Y-m-d H:i:s' ) . ': '
 490                         . 'Fatal exception of type "' . $type . '"';
 491         }
 492
 493         /**
 494          * Get a PSR-3 log event context from an Exception.
 495          *
 496          * Creates a structured array containing information about the provided
 497          * exception that can be used to augment a log message sent to a PSR-3
 498          * logger.
 499          *
 500          * @param Exception|Throwable $e
 501          * @param string $catcher CAUGHT_BY_* class constant indicating what caught the error
 502          * @return array
 503          */
 504         public static function getLogContext( $e, $catcher = self::CAUGHT_BY_OTHER ) {
 505                 return [
 506                         'exception' => $e,
 507                         'exception_id' => WebRequest::getRequestId(),
 508                         'exception_url' => self::getURL() ?: '[no req]',
 509                         'caught_by' => $catcher
 510                 ];
 511         }
 512
 513         /**
 514          * Get a structured representation of an Exception.
 515          *
 516          * Returns an array of structured data (class, message, code, file,
 517          * backtrace) derived from the given exception. The backtrace information
 518          * will be redacted as per getRedactedTraceAsArray().
 519          *
 520          * @param Exception|Throwable $e
 521          * @param string $catcher CAUGHT_BY_* class constant indicating what caught the error
 522          * @return array
 523          * @since 1.26
 524          */
 525         public static function getStructuredExceptionData( $e, $catcher = self::CAUGHT_BY_OTHER ) {
 526                 global $wgLogExceptionBacktrace;
 527
 528                 $data = [
 529                         'id' => WebRequest::getRequestId(),
 530                         'type' => get_class( $e ),
 531                         'file' => $e->getFile(),
 532                         'line' => $e->getLine(),
 533                         'message' => $e->getMessage(),
 534                         'code' => $e->getCode(),
 535                         'url' => self::getURL() ?: null,
 536                         'caught_by' => $catcher
 537                 ];
 538
 539                 if ( $e instanceof ErrorException &&
 540                         ( error_reporting() & $e->getSeverity() ) === 0
 541                 ) {
 542                         // Flag surpressed errors
 543                         $data['suppressed'] = true;
 544                 }
 545
 546                 if ( $wgLogExceptionBacktrace ) {
 547                         $data['backtrace'] = self::getRedactedTrace( $e );
 548                 }
 549
 550                 $previous = $e->getPrevious();
 551                 if ( $previous !== null ) {
 552                         $data['previous'] = self::getStructuredExceptionData( $previous, $catcher );
 553                 }
 554
 555                 return $data;
 556         }
 557
 558         /**
 559          * Serialize an Exception object to JSON.
 560          *
 561          * The JSON object will have keys 'id', 'file', 'line', 'message', and
 562          * 'url'. These keys map to string values, with the exception of 'line',
 563          * which is a number, and 'url', which may be either a string URL or or
 564          * null if the exception did not occur in the context of serving a web
 565          * request.
 566          *
 567          * If $wgLogExceptionBacktrace is true, it will also have a 'backtrace'
 568          * key, mapped to the array return value of Exception::getTrace, but with
 569          * each element in each frame's "args" array (if set) replaced with the
 570          * argument's class name (if the argument is an object) or type name (if
 571          * the argument is a PHP primitive).
 572          *
 573          * @par Sample JSON record ($wgLogExceptionBacktrace = false):
 574          * @code
 575          *  {
 576          *    "id": "c41fb419",
 577          *    "type": "MWException",
 578          *    "file": "/var/www/mediawiki/includes/cache/MessageCache.php",
 579          *    "line": 704,
 580          *    "message": "Non-string key given",
 581          *    "url": "/wiki/Main_Page"
 582          *  }
 583          * @endcode
 584          *
 585          * @par Sample JSON record ($wgLogExceptionBacktrace = true):
 586          * @code
 587          *  {
 588          *    "id": "dc457938",
 589          *    "type": "MWException",
 590          *    "file": "/vagrant/mediawiki/includes/cache/MessageCache.php",
 591          *    "line": 704,
 592          *    "message": "Non-string key given",
 593          *    "url": "/wiki/Main_Page",
 594          *    "backtrace": [{
 595          *      "file": "/vagrant/mediawiki/extensions/VisualEditor/VisualEditor.hooks.php",
 596          *      "line": 80,
 597          *      "function": "get",
 598          *      "class": "MessageCache",
 599          *      "type": "->",
 600          *      "args": ["array"]
 601          *    }]
 602          *  }
 603          * @endcode
 604          *
 605          * @since 1.23
 606          * @param Exception|Throwable $e
 607          * @param bool $pretty Add non-significant whitespace to improve readability (default: false).
 608          * @param int $escaping Bitfield consisting of FormatJson::.*_OK class constants.
 609          * @param string $catcher CAUGHT_BY_* class constant indicating what caught the error
 610          * @return string|false JSON string if successful; false upon failure
 611          */
 612         public static function jsonSerializeException(
 613                 $e, $pretty = false, $escaping = 0, $catcher = self::CAUGHT_BY_OTHER
 614         ) {
 615                 return FormatJson::encode(
 616                         self::getStructuredExceptionData( $e, $catcher ),
 617                         $pretty,
 618                         $escaping
 619                 );
 620         }
 621
 622         /**
 623          * Log an exception to the exception log (if enabled).
 624          *
 625          * This method must not assume the exception is an MWException,
 626          * it is also used to handle PHP exceptions or exceptions from other libraries.
 627          *
 628          * @since 1.22
 629          * @param Exception|Throwable $e
 630          * @param string $catcher CAUGHT_BY_* class constant indicating what caught the error
 631          */
 632         public static function logException( $e, $catcher = self::CAUGHT_BY_OTHER ) {
 633                 if ( !( $e instanceof MWException ) || $e->isLoggable() ) {
 634                         $logger = LoggerFactory::getInstance( 'exception' );
 635                         $logger->error(
 636                                 self::getLogNormalMessage( $e ),
 637                                 self::getLogContext( $e, $catcher )
 638                         );
 639
 640                         $json = self::jsonSerializeException( $e, false, FormatJson::ALL_OK, $catcher );
 641                         if ( $json !== false ) {
 642                                 $logger = LoggerFactory::getInstance( 'exception-json' );
 643                                 $logger->error( $json, [ 'private' => true ] );
 644                         }
 645
 646                         Hooks::run( 'LogException', [ $e, false ] );
 647                 }
 648         }
 649
 650         /**
 651          * Log an exception that wasn't thrown but made to wrap an error.
 652          *
 653          * @since 1.25
 654          * @param ErrorException $e
 655          * @param string $channel
 656          * @param string $level
 657          */
 658         protected static function logError(
 659                 ErrorException $e, $channel, $level = LogLevel::ERROR
 660         ) {
 661                 $catcher = self::CAUGHT_BY_HANDLER;
 662                 // The set_error_handler callback is independent from error_reporting.
 663                 // Filter out unwanted errors manually (e.g. when
 664                 // MediaWiki\suppressWarnings is active).
 665                 $suppressed = ( error_reporting() & $e->getSeverity() ) === 0;
 666                 if ( !$suppressed ) {
 667                         $logger = LoggerFactory::getInstance( $channel );
 668                         $logger->log(
 669                                 $level,
 670                                 self::getLogNormalMessage( $e ),
 671                                 self::getLogContext( $e, $catcher )
 672                         );
 673                 }
 674
 675                 // Include all errors in the json log (surpressed errors will be flagged)
 676                 $json = self::jsonSerializeException( $e, false, FormatJson::ALL_OK, $catcher );
 677                 if ( $json !== false ) {
 678                         $logger = LoggerFactory::getInstance( "{$channel}-json" );
 679                         $logger->log( $level, $json, [ 'private' => true ] );
 680                 }
 681
 682                 Hooks::run( 'LogException', [ $e, $suppressed ] );
 683         }
 684 }