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PhabricatorFilesManagementCompactWorkflow.php
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Tue, Dec 24, 17:13

PhabricatorFilesManagementCompactWorkflow.php
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<?php
final class PhabricatorFilesManagementCompactWorkflow
extends PhabricatorFilesManagementWorkflow {
public function didConstruct() {
$this
->setName('compact')
->setSynopsis(
pht(
'Merge identical files to share the same storage. In some cases, '.
'this can repair files with missing data.'))
->setArguments(
array(
array(
'name' => 'dry-run',
'help' => pht('Show what would be compacted.'),
),
array(
'name' => 'all',
'help' => pht('Compact all files.'),
),
array(
'name' => 'names',
'wildcard' => true,
),
));
}
public function execute(PhutilArgumentParser $args) {
$console = PhutilConsole::getConsole();
$iterator = $this->buildIterator($args);
if (!$iterator) {
throw new PhutilArgumentUsageException(
pht(
'Either specify a list of files to compact, or use `--all` '.
'to compact all files.'));
}
$is_dry_run = $args->getArg('dry-run');
foreach ($iterator as $file) {
$monogram = $file->getMonogram();
$hash = $file->getContentHash();
if (!$hash) {
$console->writeOut(
"%s\n",
pht('%s: No content hash.', $monogram));
continue;
}
// Find other files with the same content hash. We're going to point
// them at the data for this file.
$similar_files = id(new PhabricatorFile())->loadAllWhere(
'contentHash = %s AND id != %d AND
(storageEngine != %s OR storageHandle != %s)',
$hash,
$file->getID(),
$file->getStorageEngine(),
$file->getStorageHandle());
if (!$similar_files) {
$console->writeOut(
"%s\n",
pht('%s: No other files with the same content hash.', $monogram));
continue;
}
// Only compact files into this one if we can load the data. This
// prevents us from breaking working files if we're missing some data.
try {
$data = $file->loadFileData();
} catch (Exception $ex) {
$data = null;
}
if ($data === null) {
$console->writeOut(
"%s\n",
pht(
'%s: Unable to load file data; declining to compact.',
$monogram));
continue;
}
foreach ($similar_files as $similar_file) {
if ($is_dry_run) {
$console->writeOut(
"%s\n",
pht(
'%s: Would compact storage with %s.',
$monogram,
$similar_file->getMonogram()));
continue;
}
$console->writeOut(
"%s\n",
pht(
'%s: Compacting storage with %s.',
$monogram,
$similar_file->getMonogram()));
$old_instance = null;
try {
$old_instance = $similar_file->instantiateStorageEngine();
$old_engine = $similar_file->getStorageEngine();
$old_handle = $similar_file->getStorageHandle();
} catch (Exception $ex) {
// If the old stuff is busted, we just won't try to delete the
// old data.
phlog($ex);
}
$similar_file
->setStorageEngine($file->getStorageEngine())
->setStorageHandle($file->getStorageHandle())
->save();
if ($old_instance) {
$similar_file->deleteFileDataIfUnused(
$old_instance,
$old_engine,
$old_handle);
}
}
}
return 0;
}
}

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