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PhabricatorDifferentialMigrateHunkWorkflow.php
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Sat, Dec 28, 11:29

PhabricatorDifferentialMigrateHunkWorkflow.php
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<?php
final class PhabricatorDifferentialMigrateHunkWorkflow
extends PhabricatorDifferentialManagementWorkflow {
protected function didConstruct() {
$this
->setName('migrate-hunk')
->setExamples('**migrate-hunk** --id __hunk__ --to __storage__')
->setSynopsis(pht('Migrate storage engines for a hunk.'))
->setArguments(
array(
array(
'name' => 'id',
'param' => 'id',
'help' => pht('Hunk ID to migrate.'),
),
array(
'name' => 'to',
'param' => 'storage',
'help' => pht('Storage engine to migrate to.'),
),
));
}
public function execute(PhutilArgumentParser $args) {
$id = $args->getArg('id');
if (!$id) {
throw new PhutilArgumentUsageException(
pht('Specify a hunk to migrate with --id.'));
}
$storage = $args->getArg('to');
switch ($storage) {
case DifferentialModernHunk::DATATYPE_TEXT:
case DifferentialModernHunk::DATATYPE_FILE:
break;
default:
throw new PhutilArgumentUsageException(
pht('Specify a hunk storage engine with --to.'));
}
$hunk = $this->loadHunk($id);
$old_data = $hunk->getChanges();
switch ($storage) {
case DifferentialModernHunk::DATATYPE_TEXT:
$hunk->saveAsText();
$this->logOkay(
pht('TEXT'),
pht('Convereted hunk to text storage.'));
break;
case DifferentialModernHunk::DATATYPE_FILE:
$hunk->saveAsFile();
$this->logOkay(
pht('FILE'),
pht('Convereted hunk to file storage.'));
break;
}
$hunk = $this->loadHunk($id);
$new_data = $hunk->getChanges();
if ($old_data !== $new_data) {
throw new Exception(
pht(
'Integrity check failed: new file data differs fom old data!'));
}
return 0;
}
private function loadHunk($id) {
$hunk = id(new DifferentialModernHunk())->load($id);
if (!$hunk) {
throw new PhutilArgumentUsageException(
pht(
'No hunk exists with ID "%s".',
$id));
}
return $hunk;
}
}

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