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phorge-phorge/webroot/index.php
epriestley c13f9d157b Fix double-stops on profiler sampling
Summary:
For some time, we've stopped the profiler twice when it was invoked by the sampling mechanism. The first time it actually stops, and we write a profile. The second time it hadn't been started, so it returns empty and we write an invalid profile.

Instead, keep track of whether it is running or not, and don't stop it a second time.

Ref T2870.

Test Plan: Set sample rate to 1-in-3, observed valid sample profiles generate.

Reviewers: btrahan, chad

CC: aran

Maniphest Tasks: T2870

Differential Revision: https://secure.phabricator.com/D5534
2013-04-02 10:05:43 -07:00

142 lines
4.4 KiB
PHP

<?php
require_once dirname(dirname(__FILE__)).'/support/PhabricatorStartup.php';
PhabricatorStartup::didStartup();
try {
PhabricatorStartup::loadCoreLibraries();
PhabricatorEnv::initializeWebEnvironment();
// 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();
PhutilErrorHandler::setErrorListener(
array('DarkConsoleErrorLogPluginAPI', 'handleErrors'));
$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 (AphrontRedirectException $ex) {
$response = id(new AphrontRedirectResponse())
->setURI($ex->getURI());
} 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 hsprintf(
'<div style="background: #eeddff; white-space: pre-wrap;
z-index: 200000; position: relative; padding: 8px;
font-family: monospace;">%s</div>',
$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,
$ex,
));
}
PhabricatorStartup::didFatal('[Rendering Exception] '.$ex->getMessage());
}
$write_guard->dispose();
$access_log->setData(
array(
'c' => $response->getHTTPResponseCode(),
'T' => PhabricatorStartup::getMicrosecondsSinceStart(),
));
DarkConsoleXHProfPluginAPI::saveProfilerSample($access_log);
} catch (Exception $ex) {
PhabricatorStartup::didFatal("[Exception] ".$ex->getMessage());
}