Magallanes/Mage/Task/BuiltIn/Deployment/ReleaseTask.php

<?php
/*
* This file is part of the Magallanes package.
*
* (c) Andrés Montañez <andres@andresmontanez.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Mage\Task\BuiltIn\Deployment;

use Mage\Task\AbstractTask;
use Mage\Task\Releases\IsReleaseAware;
use Mage\Task\Releases\SkipOnOverride;

/**
 * Task for Releasing a Deploy
 *
 * @author Andrés Montañez <andres@andresmontanez.com>
 */
class ReleaseTask extends AbstractTask implements IsReleaseAware, SkipOnOverride
{
	/**
	 * (non-PHPdoc)
	 * @see \Mage\Task\AbstractTask::getName()
	 */
	public function getName()
	{
		return 'Releasing [built-in]';
	}

	/**
	 * Releases a Deployment: points the current symbolic link to the release directory
	 * @see \Mage\Task\AbstractTask::run()
	 */
	public function run()
	{
		if ($this->getConfig()->release('enabled', false) == true) {
			$releasesDirectory = $this->getConfig()->release('directory', 'releases');
			$symlink = $this->getConfig()->release('symlink', 'current');

			if (substr($symlink, 0, 1) == '/') {
				$releasesDirectory = rtrim($this->getConfig()->deployment('to'), '/') . '/' . $releasesDirectory;
			}

			$releaseId = $this->getConfig()->getReleaseId();

			if ($this->getConfig()->release('compressreleases', false) == true) {
				// Tar.gz releases
				$result = $this->tarReleases() && $result;
				// Untar new release
				$result = $this->untarRelease($releaseId) && $result;
			}

			$currentCopy = $releasesDirectory . '/' . $releaseId;

			//Check if target user:group is specified
			$userGroup = $this->getConfig()->deployment('owner');
			// Fetch the user and group from base directory; defaults usergroup to 33:33
			if(empty($userGroup)){
				$user = '33';
				$group = '33';
				$directoryInfos = '';
				// Get raw directory info and parse it in php.
				// "stat" command don't behave the same on different systems, ls output format also varies
				// and awk parameters need special care depending on the executing shell
				$resultFetch = $this->runCommandRemote("ls -ld .", $directoryInfos);
				if(!empty($directoryInfos)){
					//uniformize format as it depends on the system deployed on
					$directoryInfos = trim(str_replace(array("  ", "\t"), ' ', $directoryInfos));
					$infoArray = explode(' ', $directoryInfos);
					if(!empty($infoArray[2])) {
						$user = $infoArray[2];
					}
					if(!empty($infoArray[3])) {
						$group = $infoArray[3];
					}
					$userGroup = $user . ':' . $group;
				}
			}

			// Remove symlink if exists; create new symlink and change owners
			$command = 'rm -f ' . $symlink
				. ' ; '
				. 'ln -sf ' . $currentCopy . ' ' . $symlink;

			if ($resultFetch && $userGroup != '') {
				$command .= ' && '
					. 'chown -h ' . $userGroup . ' ' . $symlink
					. ' && '
					. 'chown -R ' . $userGroup . ' ' . $currentCopy
					. ' && '
					. 'chown ' . $userGroup . ' ' . $releasesDirectory;
			}

			$result = $this->runCommandRemote($command);

			return $result;

		} else {
			return false;
		}
	}

}