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DrydockManagementCommandWorkflow.php
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			<?php

			final class DrydockManagementCommandWorkflow
			extends DrydockManagementWorkflow {

			protected function didConstruct() {
			$this
			->setName('command')
			->setSynopsis(pht('Run a command on a leased resource.'))
			->setArguments(
			array(
			array(
			'name' => 'lease',
			'param' => 'id',
			'help' => pht('Lease ID.'),
			),
			array(
			'name' => 'argv',
			'wildcard' => true,
			'help' => pht('Command to execute.'),
			),
			));
			}

			public function execute(PhutilArgumentParser $args) {
			$lease_id = $args->getArg('lease');
			if (!$lease_id) {
			throw new PhutilArgumentUsageException(
			pht(
			'Use "--lease" to specify a lease.'));
			}

			$argv = $args->getArg('argv');
			if (!$argv) {
			throw new PhutilArgumentUsageException(
			pht(
			'Specify a command to run.'));
			}

			$lease = id(new DrydockLeaseQuery())
			->setViewer($this->getViewer())
			->withIDs(array($lease_id))
			->executeOne();
			if (!$lease) {
			throw new Exception(
			pht(
			'Unable to load lease with ID "%s"!',
			$lease_id));
			}

			// TODO: Check lease state, etc.

			$interface = $lease->getInterface(DrydockCommandInterface::INTERFACE_TYPE);

			list($stdout, $stderr) = call_user_func_array(
			array($interface, 'execx'),
			array('%Ls', $argv));

			fwrite(STDOUT, $stdout);
			fwrite(STDERR, $stderr);

			return 0;
			}

			}