PhabricatorHunksManagementMigrateWorkflow.php
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	<?php

	final class PhabricatorHunksManagementMigrateWorkflow
	extends PhabricatorHunksManagementWorkflow {

	protected function didConstruct() {
	$this
	->setName('migrate')
	->setExamples('migrate')
	->setSynopsis(pht('Migrate hunks to modern storage.'))
	->setArguments(array());
	}

	public function execute(PhutilArgumentParser $args) {
	$saw_any_rows = false;
	$console = PhutilConsole::getConsole();

	$table = new DifferentialLegacyHunk();
	foreach (new LiskMigrationIterator($table) as $hunk) {
	$saw_any_rows = true;

	$id = $hunk->getID();
	$console->writeOut("%s\n", pht('Migrating hunk %d...', $id));

	$new_hunk = id(new DifferentialModernHunk())
	->setChangesetID($hunk->getChangesetID())
	->setOldOffset($hunk->getOldOffset())
	->setOldLen($hunk->getOldLen())
	->setNewOffset($hunk->getNewOffset())
	->setNewLen($hunk->getNewLen())
	->setChanges($hunk->getChanges())
	->setDateCreated($hunk->getDateCreated())
	->setDateModified($hunk->getDateModified());

	$hunk->openTransaction();
	$new_hunk->save();
	$hunk->delete();
	$hunk->saveTransaction();

	$old_len = strlen($hunk->getChanges());
	$new_len = strlen($new_hunk->getData());
	if ($old_len) {
	$diff_len = ($old_len - $new_len);
	$console->writeOut(
	"%s\n",
	pht(
	'Saved %s bytes (%s).',
	new PhutilNumber($diff_len),
	sprintf('%.1f%%', 100 * ($diff_len / $old_len))));
	}

	break;
	}

	if ($saw_any_rows) {
	$console->writeOut("%s\n", pht('Done.'));
	} else {
	$console->writeOut("%s\n", pht('No rows to migrate.'));
	}
	}

	}