PhabricatorGarbageCollectorManagementSetPolicyWorkflow.php
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	<?php

	final class PhabricatorGarbageCollectorManagementSetPolicyWorkflow
	extends PhabricatorGarbageCollectorManagementWorkflow {

	protected function didConstruct() {
	$this
	->setName('set-policy')
	->setExamples(
	"set-policy --collector __collector__ --days 30\n".
	"set-policy --collector __collector__ --indefinite\n".
	"set-policy --collector __collector__ --default")
	->setSynopsis(
	pht(
	'Change retention policies for a garbage collector.'))
	->setArguments(
	array(
	array(
	'name' => 'collector',
	'param' => 'const',
	'help' => pht(
	'Constant identifying the garbage collector.'),
	),
	array(
	'name' => 'indefinite',
	'help' => pht(
	'Set an indefinite retention policy.'),
	),
	array(
	'name' => 'default',
	'help' => pht(
	'Use the default retention policy.'),
	),
	array(
	'name' => 'days',
	'param' => 'count',
	'help' => pht(
	'Retain data for the specified number of days.'),
	),
	));
	}

	public function execute(PhutilArgumentParser $args) {
	$config_key = 'phd.garbage-collection';

	$collector = $this->getCollector($args->getArg('collector'));

	$days = $args->getArg('days');
	$indefinite = $args->getArg('indefinite');
	$default = $args->getArg('default');

	$count = 0;
	if ($days !== null) {
	$count++;
	}
	if ($indefinite) {
	$count++;
	}
	if ($default) {
	$count++;
	}

	if (!$count) {
	throw new PhutilArgumentUsageException(
	pht(
	'Choose a policy with "%s", "%s" or "%s".',
	'--days',
	'--indefinite',
	'--default'));
	}

	if ($count > 1) {
	throw new PhutilArgumentUsageException(
	pht(
	'Options "%s", "%s" and "%s" represent mutually exclusive ways '.
	'to choose a policy. Specify only one.',
	'--days',
	'--indefinite',
	'--default'));
	}

	if ($days !== null) {
	$days = (int)$days;
	if ($days < 1) {
	throw new PhutilArgumentUsageException(
	pht(
	'Specify a positive number of days to retain data for.'));
	}
	}

	$collector_const = $collector->getCollectorConstant();
	$value = PhabricatorEnv::getEnvConfig($config_key);

	if ($days !== null) {
	echo tsprintf(
	"%s\n",
	pht(
	'Setting retention policy for "%s" to %s day(s).',
	$collector->getCollectorName(),
	new PhutilNumber($days)));

	$value[$collector_const] = phutil_units($days.' days in seconds');
	} else if ($indefinite) {
	echo tsprintf(
	"%s\n",
	pht(
	'Setting "%s" to be retained indefinitely.',
	$collector->getCollectorName()));

	$value[$collector_const] = null;
	} else {
	echo tsprintf(
	"%s\n",
	pht(
	'Restoring "%s" to the default retention policy.',
	$collector->getCollectorName()));

	unset($value[$collector_const]);
	}

	id(new PhabricatorConfigLocalSource())
	->setKeys(
	array(
	$config_key => $value,
	));

	echo tsprintf(
	"%s\n",
	pht(
	'Wrote new policy to local configuration.'));

	echo tsprintf(
	"%s\n",
	pht(
	'This change will take effect the next time the daemons are '.
	'restarted.'));

	return 0;
	}

	}

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