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phorge-phorge/webroot/index.php
epriestley 08126d3904 Improve top-level exception handling
Summary:
Fixes T6692. Addresses two main issues:

  - The write guard would sometimes not get disposed of on exception pathways, generating an unnecessary secondary error which was just a symptom of the original root error.
    - This was generally confusing and reduced the quality of reports we received because users would report the symptomatic error sometimes instead of the real error.
    - Instead, reflow the handling so that we always dispose of the write guard if we create one.
  - If we missed the Controller-level error page generation (normally, a nice page with full CSS, etc), we'd jump straight to Startup-level error page generation (very basic plain text).
    - A large class of errors occur too early or too late to be handled by Controller-level pages, but many of these errors are not fundamental, and the plain text page is excessively severe.
    - Provide a mid-level simple HTML error page for errors which can't get full CSS, but also aren't so fundamental that we have no recourse but plain text.

Test Plan:
Mid-level errors now produce an intentional-looking error page:

{F259885}

Verified that setup errors still render properly.

@chad, feel free to tweak the exception page -- I just did a rough pass on it. Like the setup error stuff, it doesn't have Celerity, so we can't use `{$colors}` and no other CSS will be loaded.

Reviewers: chad, btrahan

Reviewed By: btrahan

Subscribers: epriestley, chad

Maniphest Tasks: T6692

Differential Revision: https://secure.phabricator.com/D11126
2015-01-02 10:49:27 -08:00

37 lines
1 KiB
PHP

<?php
$phabricator_root = dirname(dirname(__FILE__));
require_once $phabricator_root.'/support/PhabricatorStartup.php';
// If the preamble script exists, load it.
$preamble_path = $phabricator_root.'/support/preamble.php';
if (file_exists($preamble_path)) {
require_once $preamble_path;
}
PhabricatorStartup::didStartup();
try {
PhabricatorStartup::loadCoreLibraries();
$sink = new AphrontPHPHTTPSink();
try {
AphrontApplicationConfiguration::runHTTPRequest($sink);
} catch (Exception $ex) {
try {
$response = new AphrontUnhandledExceptionResponse();
$response->setException($ex);
PhabricatorStartup::endOutputCapture();
$sink->writeResponse($response);
} catch (Exception $response_exception) {
// If we hit a rendering exception, ignore it and throw the original
// exception. It is generally more interesting and more likely to be
// the root cause.
throw $ex;
}
}
} catch (Exception $ex) {
PhabricatorStartup::didEncounterFatalException('Core Exception', $ex, false);
}