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phorge-phorge/webroot/index.php
epriestley 56bcb33a18 Improve exception reporting behavior for core exceptions
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
2014-01-21 14:03:09 -08:00

151 lines
4.5 KiB
PHP

<?php
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();
$access_log = PhabricatorAccessLog::getLog();
PhabricatorStartup::setGlobal('log.access', $access_log);
$access_log->setData(
array(
'R' => AphrontRequest::getHTTPHeader('Referer', '-'),
'r' => idx($_SERVER, 'REMOTE_ADDR', '-'),
'M' => idx($_SERVER, 'REQUEST_METHOD', '-'),
));
DarkConsoleXHProfPluginAPI::hookProfiler();
DarkConsoleErrorLogPluginAPI::registerErrorHandler();
$sink = new AphrontPHPHTTPSink();
$response = PhabricatorSetupCheck::willProcessRequest();
if ($response) {
PhabricatorStartup::endOutputCapture();
$sink->writeResponse($response);
return;
}
$host = AphrontRequest::getHTTPHeader('Host');
$path = $_REQUEST['__path__'];
switch ($host) {
default:
$config_key = 'aphront.default-application-configuration-class';
$application = PhabricatorEnv::newObjectFromConfig($config_key);
break;
}
$application->setHost($host);
$application->setPath($path);
$application->willBuildRequest();
$request = $application->buildRequest();
// Until an administrator sets "phabricator.base-uri", assume it is the same
// as the request URI. This will work fine in most cases, it just breaks down
// when daemons need to do things.
$request_protocol = ($request->isHTTPS() ? 'https' : 'http');
$request_base_uri = "{$request_protocol}://{$host}/";
PhabricatorEnv::setRequestBaseURI($request_base_uri);
$write_guard = new AphrontWriteGuard(array($request, 'validateCSRF'));
$application->setRequest($request);
list($controller, $uri_data) = $application->buildController();
$access_log->setData(
array(
'U' => (string)$request->getRequestURI()->getPath(),
'C' => get_class($controller),
));
// If execution throws an exception and then trying to render that exception
// throws another exception, we want to show the original exception, as it is
// likely the root cause of the rendering exception.
$original_exception = null;
try {
$response = $controller->willBeginExecution();
if ($request->getUser() && $request->getUser()->getPHID()) {
$access_log->setData(
array(
'u' => $request->getUser()->getUserName(),
'P' => $request->getUser()->getPHID(),
));
}
if (!$response) {
$controller->willProcessRequest($uri_data);
$response = $controller->processRequest();
}
} catch (Exception $ex) {
$original_exception = $ex;
$response = $application->handleException($ex);
}
try {
$response = $controller->didProcessRequest($response);
$response = $application->willSendResponse($response, $controller);
$response->setRequest($request);
$unexpected_output = PhabricatorStartup::endOutputCapture();
if ($unexpected_output) {
$unexpected_output = "Unexpected output:\n\n{$unexpected_output}";
phlog($unexpected_output);
if ($response instanceof AphrontWebpageResponse) {
echo phutil_tag(
'div',
array('style' =>
'background: #eeddff;'.
'white-space: pre-wrap;'.
'z-index: 200000;'.
'position: relative;'.
'padding: 8px;'.
'font-family: monospace'),
$unexpected_output);
}
}
$sink->writeResponse($response);
} catch (Exception $ex) {
$write_guard->dispose();
$access_log->write();
if ($original_exception) {
$ex = new PhutilAggregateException(
"Multiple exceptions during processing and rendering.",
array(
$original_exception,
$ex,
));
}
PhabricatorStartup::didEncounterFatalException(
'Rendering Exception',
$ex,
$show_unexpected_traces);
}
$write_guard->dispose();
$access_log->setData(
array(
'c' => $response->getHTTPResponseCode(),
'T' => PhabricatorStartup::getMicrosecondsSinceStart(),
));
DarkConsoleXHProfPluginAPI::saveProfilerSample($access_log);
} catch (Exception $ex) {
PhabricatorStartup::didEncounterFatalException(
'Core Exception',
$ex,
$show_unexpected_traces);
}