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PhabricatorFilesManagementMigrateWorkflow.php
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Sat, Nov 16, 10:30

PhabricatorFilesManagementMigrateWorkflow.php
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<?php
final class PhabricatorFilesManagementMigrateWorkflow
extends PhabricatorFilesManagementWorkflow {
protected function didConstruct() {
$this
->setName('migrate')
->setSynopsis(pht('Migrate files between storage engines.'))
->setArguments(
array(
array(
'name' => 'engine',
'param' => 'storage_engine',
'help' => pht('Migrate to the named storage engine.'),
),
array(
'name' => 'dry-run',
'help' => pht('Show what would be migrated.'),
),
array(
'name' => 'min-size',
'param' => 'bytes',
'help' => pht(
'Do not migrate data for files which are smaller than a given '.
'filesize.'),
),
array(
'name' => 'max-size',
'param' => 'bytes',
'help' => pht(
'Do not migrate data for files which are larger than a given '.
'filesize.'),
),
array(
'name' => 'all',
'help' => pht('Migrate all files.'),
),
array(
'name' => 'names',
'wildcard' => true,
),
));
}
public function execute(PhutilArgumentParser $args) {
$target_key = $args->getArg('engine');
if (!$target_key) {
throw new PhutilArgumentUsageException(
pht(
'Specify an engine to migrate to with `%s`. '.
'Use `%s` to get a list of engines.',
'--engine',
'files engines'));
}
$target_engine = PhabricatorFile::buildEngine($target_key);
$iterator = $this->buildIterator($args);
if (!$iterator) {
throw new PhutilArgumentUsageException(
pht(
'Either specify a list of files to migrate, or use `%s` '.
'to migrate all files.',
'--all'));
}
$is_dry_run = $args->getArg('dry-run');
$min_size = (int)$args->getArg('min-size');
$max_size = (int)$args->getArg('max-size');
$failed = array();
$engines = PhabricatorFileStorageEngine::loadAllEngines();
$total_bytes = 0;
$total_files = 0;
foreach ($iterator as $file) {
$monogram = $file->getMonogram();
$engine_key = $file->getStorageEngine();
$engine = idx($engines, $engine_key);
if (!$engine) {
echo tsprintf(
"%s\n",
pht(
'%s: Uses unknown storage engine "%s".',
$monogram,
$engine_key));
$failed[] = $file;
continue;
}
if ($engine->isChunkEngine()) {
echo tsprintf(
"%s\n",
pht(
'%s: Stored as chunks, no data to migrate directly.',
$monogram));
continue;
}
if ($engine_key === $target_key) {
echo tsprintf(
"%s\n",
pht(
'%s: Already stored in engine "%s".',
$monogram,
$target_key));
continue;
}
$byte_size = $file->getByteSize();
if ($min_size && ($byte_size < $min_size)) {
echo tsprintf(
"%s\n",
pht(
'%s: File size (%s) is smaller than minimum size (%s).',
$monogram,
phutil_format_bytes($byte_size),
phutil_format_bytes($min_size)));
continue;
}
if ($max_size && ($byte_size > $max_size)) {
echo tsprintf(
"%s\n",
pht(
'%s: File size (%s) is larger than maximum size (%s).',
$monogram,
phutil_format_bytes($byte_size),
phutil_format_bytes($max_size)));
continue;
}
if ($is_dry_run) {
echo tsprintf(
"%s\n",
pht(
'%s: (%s) Would migrate from "%s" to "%s" (dry run)...',
$monogram,
phutil_format_bytes($byte_size),
$engine_key,
$target_key));
} else {
echo tsprintf(
"%s\n",
pht(
'%s: (%s) Migrating from "%s" to "%s"...',
$monogram,
phutil_format_bytes($byte_size),
$engine_key,
$target_key));
}
try {
if ($is_dry_run) {
// Do nothing, this is a dry run.
} else {
$file->migrateToEngine($target_engine);
}
$total_files += 1;
$total_bytes += $byte_size;
echo tsprintf(
"%s\n",
pht('Done.'));
} catch (Exception $ex) {
echo tsprintf(
"%s\n",
pht('Failed! %s', (string)$ex));
$failed[] = $file;
throw $ex;
}
}
echo tsprintf(
"%s\n",
pht(
'Total Migrated Files: %s',
new PhutilNumber($total_files)));
echo tsprintf(
"%s\n",
pht(
'Total Migrated Bytes: %s',
phutil_format_bytes($total_bytes)));
if ($is_dry_run) {
echo tsprintf(
"%s\n",
pht(
'This was a dry run, so no real migrations were performed.'));
}
if ($failed) {
$monograms = mpull($failed, 'getMonogram');
echo tsprintf(
"%s\n",
pht('Failures: %s.', implode(', ', $monograms)));
return 1;
}
return 0;
}
}

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