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Code Issues Releases Wiki Activity

Improve exception reporting behavior for core exceptions

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Summary:
See <https://github.com/facebook/phabricator/issues/487>. If an exception is thrown too high in the stack for the main exception handling to deal with it, we currently never report a stack trace. Instead:

  - Always report a stack trace to the error log.
  - With developer mode, also report a stack trace to the screen.

Test Plan: Added a high-level `throw` and hit both cases. Got traces in the log and traces-under-developer-mode on screen.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D8022
This commit is contained in:
epriestley 2014-01-21 14:03:09 -08:00
parent c9a0ffa1cf
commit 56bcb33a18
2 changed files with 58 additions and 4 deletions
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49
support/PhabricatorStartup.php
View file

@ -198,9 +198,54 @@ final class PhabricatorStartup {
/**
* Fatal the request completely in response to an exception, sending a plain
* text message to the client. Calls @{method:didFatal} internally.
*
* @param string Brief description of the exception context, like
* `"Rendering Exception"`.
* @param Exception The exception itself.
* @param bool True if it's okay to show the exception's stack trace
* to the user. The trace will always be logged.
* @return exit This method **does not return**.
*
* @task apocalypse
*/
public static function didFatal($message) {
public static function didEncounterFatalException(
$note,
Exception $ex,
$show_trace) {
$message = '['.$note.'/'.get_class($ex).'] '.$ex->getMessage();
$full_message = $message;
$full_message .= "\n\n";
$full_message .= $ex->getTraceAsString();
if ($show_trace) {
$message = $full_message;
}
self::didFatal($message, $full_message);
}
/**
* Fatal the request completely, sending a plain text message to the client.
*
* @param string Plain text message to send to the client.
* @param string Plain text message to send to the error log. If not
* provided, the client message is used. You can pass a more
* detailed message here (e.g., with stack traces) to avoid
* showing it to users.
* @return exit This method **does not return**.
*
* @task apocalypse
*/
public static function didFatal($message, $log_message = null) {
if ($log_message === null) {
$log_message = $message;
}
self::endOutputCapture();
$access_log = self::getGlobal('log.access');
@ -219,7 +264,7 @@ final class PhabricatorStartup {
$replace = true,
$http_error = 500);
error_log($message);
error_log($log_message);
echo $message;
exit(1);

13
webroot/index.php
View file

@ -3,10 +3,13 @@
require_once dirname(dirname(__FILE__)).'/support/PhabricatorStartup.php';
PhabricatorStartup::didStartup();
$show_unexpected_traces = false;
try {
PhabricatorStartup::loadCoreLibraries();
PhabricatorEnv::initializeWebEnvironment();
$show_unexpected_traces = PhabricatorEnv::getEnvConfig(
'phabricator.developer-mode');
// This is the earliest we can get away with this, we need env config first.
PhabricatorAccessLog::init();
@ -124,7 +127,10 @@ try {
$ex,
));
}
PhabricatorStartup::didFatal('[Rendering Exception] '.$ex->getMessage());
PhabricatorStartup::didEncounterFatalException(
'Rendering Exception',
$ex,
$show_unexpected_traces);
}
$write_guard->dispose();
@ -137,6 +143,9 @@ try {
DarkConsoleXHProfPluginAPI::saveProfilerSample($access_log);
} catch (Exception $ex) {
PhabricatorStartup::didFatal("[Exception] ".$ex->getMessage());
PhabricatorStartup::didEncounterFatalException(
'Core Exception',
$ex,
$show_unexpected_traces);
}