Allow a release to be zipped

If you enable the parameter 'releases: compressreleases: true', every
release except the current wil be added to a tar.gz. This is to preserve
diskspace on the remote host.

Mage/Task/AbstractTask.php

@@ -247,4 +247,64 @@ abstract class AbstractTask
 
 		return $command;
 	}
+
+	/**
+	 * @param $releasesDirectory
+	 * @param $releaseId
+	 * @return bool
+	 */
+	protected function tarRelease($releaseId)
+	{
+		$result = true;
+		// for given release, check if tarred
+		$output = '';
+		$releasesDirectory = $this->getConfig()->release('directory', 'releases');
+
+		$currentReleaseDirectory = $releasesDirectory . '/' . $releaseId;
+		$currentReleaseDirectoryTemp = $currentReleaseDirectory . '_tmp/';
+		$currentRelease = $currentReleaseDirectory . '/' . $releaseId . '.tar.gz';
+
+		$command = 'test -e ' . $currentRelease . ' && echo "true" || echo ""';
+		$this->runCommandRemote($command, $output);
+
+		// if not, do so
+		if (!$output) {
+			$commands = array();
+			$commands[] = 'mv ' . $currentReleaseDirectory . ' ' . $currentReleaseDirectoryTemp;
+			$commands[] = 'mkdir ' . $currentReleaseDirectory;
+			$commands[] = 'tar cfz ' . $currentRelease . ' ' . $currentReleaseDirectoryTemp;
+			$commands[] = 'rm -rf ' . $currentReleaseDirectoryTemp;
+			$command = implode(' && ', $commands);
+			$result = $this->runCommandRemote($command, $output);
+			return $result;
+		}
+		return $result;
+	}
+
+	protected function untarRelease($releaseId)
+	{
+		$result = true;
+		// for given release, check if tarred
+		$output = '';
+		$releasesDirectory = $this->getConfig()->release('directory', 'releases');
+
+		$currentReleaseDirectory = $releasesDirectory . '/' . $releaseId;
+		$currentReleaseDirectoryTemp = $currentReleaseDirectory . '_tmp/';
+		$currentRelease = $currentReleaseDirectory . '/' . $releaseId . '.tar.gz';
+
+		$command = 'test -e ' . $currentRelease . ' && echo "true" || echo ""';
+		$this->runCommandRemote($command, $output);
+
+		// if tarred, untar now
+		if ($output) {
+			$commands = array();
+			$commands[] = 'tar xfz ' . $currentRelease;
+			$commands[] = 'rm -rf ' . $currentReleaseDirectory;
+			$commands[] = 'mv ' .$currentReleaseDirectoryTemp . ' ' . $currentReleaseDirectory;
+			$command = implode(' && ', $commands);
+			$result = $this->runCommandRemote($command, $output);
+			return $result;
+		}
+		return $result;
+	}
 }

Mage/Task/BuiltIn/Deployment/ReleaseTask.php

@@ -44,7 +44,16 @@ class ReleaseTask extends AbstractTask implements IsReleaseAware, SkipOnOverride
 				$releasesDirectory = rtrim($this->getConfig()->deployment('to'), '/') . '/' . $releasesDirectory;
 			}
 
-            $currentCopy = $releasesDirectory . '/' . $this->getConfig()->getReleaseId();
+			$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');

Mage/Task/BuiltIn/Releases/RollbackTask.php

@@ -130,6 +130,13 @@ class RollbackTask extends AbstractTask implements IsReleaseAware
 						}
 					}
 
+					if ($this->getConfig()->release('compressreleases', false) == true) {
+						// Tar the current
+						$result = $this->tarReleases() && $result;
+						// Untar the rollbackto
+						$result = $this->untarRelease($releaseId) && $result;
+					}
+
 					// Changing Release
 					Console::output('Running <purple>Rollback Release [id=' . $releaseId . ']</purple> ... ', 2, false);