private function buildRawFileResponse(DifferentialChangeset $changeset, $is_new)
{
$viewer = $this->getViewer();
if ($is_new) {
$key = 'raw:new:phid';
} else {
$key = 'raw:old:phid';
}
$metadata = $changeset->getMetadata();
$file = null;
$phid = idx($metadata, $key);
if ($phid) {
$file = id(new PhabricatorFileQuery())->setViewer($viewer)->withPHIDs(array($phid))->execute();
if ($file) {
$file = head($file);
}
}
if (!$file) {
// This is just building a cache of the changeset content in the file
// tool, and is safe to run on a read pathway.
$unguard = AphrontWriteGuard::beginScopedUnguardedWrites();
if ($is_new) {
$data = $changeset->makeNewFile();
} else {
$data = $changeset->makeOldFile();
}
$file = PhabricatorFile::newFromFileData($data, array('name' => $changeset->getFilename(), 'mime-type' => 'text/plain'));
$metadata[$key] = $file->getPHID();
$changeset->setMetadata($metadata);
$changeset->save();
unset($unguard);
}
return $file->getRedirectResponse();
}