/**
  * Cleanup old releases by listing all releases and keeping a configurable
  * number of old releases (application option "keepReleases"). The current
  * and previous release (if one exists) are protected from removal.
  *
  * Example configuration:
  *
  *     $application->setOption('keepReleases', 2);
  *
  * Note: There is no rollback for this cleanup, so we have to be sure not to delete any
  *       live or referenced releases.
  *
  * @param \TYPO3\Deploy\Domain\Model\Node $node
  * @param \TYPO3\Deploy\Domain\Model\Application $application
  * @param \TYPO3\Deploy\Domain\Model\Deployment $deployment
  * @param array $options
  * @return void
  */
 public function execute(Node $node, Application $application, Deployment $deployment, array $options = array())
 {
     if (!$application->hasOption('keepReleases')) {
         $deployment->getLogger()->log(($deployment->isDryRun() ? 'Would keep' : 'Keeping') . ' all releases for "' . $application->getName() . '"', LOG_DEBUG);
         return;
     }
     $keepReleases = $application->getOption('keepReleases');
     $releasesPath = $application->getDeploymentPath() . '/releases';
     $currentReleaseIdentifier = $deployment->getReleaseIdentifier();
     $previousReleasePath = $application->getDeploymentPath() . '/releases/previous';
     $previousReleaseIdentifier = trim($this->shell->execute("if [ -h {$previousReleasePath} ]; then basename `readlink {$previousReleasePath}` ; fi", $node, $deployment));
     $allReleasesList = $this->shell->execute("find {$releasesPath}/. -maxdepth 1 -type d -exec basename {} \\;", $node, $deployment);
     $allReleases = preg_split('/\\s+/', $allReleasesList, -1, PREG_SPLIT_NO_EMPTY);
     $removableReleases = array();
     foreach ($allReleases as $release) {
         if ($release !== '.' && $release !== $currentReleaseIdentifier && $release !== $previousReleaseIdentifier && $release !== 'current' && $release !== 'previous') {
             $removableReleases[] = trim($release);
         }
     }
     sort($removableReleases);
     $removeReleases = array_slice($removableReleases, 0, count($removableReleases) - $keepReleases);
     $removeCommand = '';
     foreach ($removeReleases as $removeRelease) {
         $removeCommand .= "rm -rf {$releasesPath}/{$removeRelease};rm -f {$releasesPath}/{$removeRelease}REVISION;";
     }
     if (count($removeReleases) > 0) {
         $deployment->getLogger()->log(($deployment->isDryRun() ? 'Would remove' : 'Removing') . ' releases ' . implode(', ', $removeReleases));
         $this->shell->executeOrSimulate($removeCommand, $node, $deployment);
     } else {
         $deployment->getLogger()->log('No releases to remove', LOG_DEBUG);
     }
 }
 /**
  * Executes this task
  *
  * @param \TYPO3\Deploy\Domain\Model\Node $node
  * @param \TYPO3\Deploy\Domain\Model\Application $application
  * @param \TYPO3\Deploy\Domain\Model\Deployment $deployment
  * @param array $options
  * @return void
  */
 public function execute(Node $node, Application $application, Deployment $deployment, array $options = array())
 {
     $releaseIdentifier = $deployment->getReleaseIdentifier();
     $releasesPath = $application->getDeploymentPath() . '/releases';
     $this->shell->executeOrSimulate('cd ' . $releasesPath . ' && rm -f ./previous && if [ -e ./current ]; then mv ./current ./previous; fi && ln -s ./' . $releaseIdentifier . ' ./current', $node, $deployment);
     $deployment->getLogger()->log('Node "' . $node->getName() . '" ' . ($deployment->isDryRun() ? 'would be' : 'is') . ' live!');
 }
 /**
  * Executes this task
  *
  * @param \TYPO3\Deploy\Domain\Model\Node $node
  * @param \TYPO3\Deploy\Domain\Model\Application $application
  * @param \TYPO3\Deploy\Domain\Model\Deployment $deployment
  * @param array $options
  * @return void
  */
 public function execute(Node $node, Application $application, Deployment $deployment, array $options = array())
 {
     $releaseIdentifier = $deployment->getReleaseIdentifier();
     $releasesPath = $application->getDeploymentPath() . '/releases';
     $commands = array("mkdir -p {$releasesPath}/{$releaseIdentifier}/Data", "cd {$releasesPath}/{$releaseIdentifier}", "ln -sf ../../../shared/Data/Logs ./Data/Logs", "ln -sf ../../../shared/Data/Persistent ./Data/Persistent");
     $this->shell->executeOrSimulate($commands, $node, $deployment);
 }