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<?php |
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/* this file is part of pipelines */ |
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namespace Ktomk\Pipelines\Runner\Docker\Provision; |
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use Ktomk\Pipelines\Cli\Exec; |
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use Ktomk\Pipelines\Lib; |
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use Ktomk\Pipelines\LibFs; |
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use Ktomk\Pipelines\LibTmp; |
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use Ktomk\Pipelines\Value\SideEffect\DestructibleString; |
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/** |
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* Copy files and directories (into a running container) |
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* |
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* This basically works with tar and docker cp as we found it working |
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* from very early iterations, therefore the "Tar" class name prefix. |
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* |
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* Straight extraction from StepRunner for static methods |
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*/ |
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class TarCopier |
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{ |
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/** |
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* Make an empty directory with user/group from an existing directory (on |
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* the system pipelines is running, the source directory). |
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* |
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* This ensures the target directory pathname exists within the container |
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* on return status 0. |
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* |
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* If the target pathname is '/', the operation is always successful even |
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* no operation is done. reason is that '/' is expected to be already setup. |
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* |
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* If the target path is empty or relative, the behaviour is undefined. |
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* |
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* @param Exec $exec |
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* @param string $id container id |
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* @param string $source directory to obtain file-properties from (user, group) |
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* @param string $target directory to create within container with those properties |
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* |
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* @return int status |
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*/ |
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public static function extMakeEmptyDirectory(Exec $exec, $id, $source, $target) |
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{ |
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if ('/' === $target) { |
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return 0; |
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} |
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if ('' === $source) { |
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throw new \InvalidArgumentException('empty source'); |
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} |
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if (!is_dir($source)) { |
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throw new \InvalidArgumentException("not a directory: '${source}'"); |
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} |
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$tmpDir = DestructibleString::rmDir(LibTmp::tmpDir('pipelines-cp.')); |
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LibFs::symlinkWithParents($source, $tmpDir . $target); |
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$cd = Lib::cmd('cd', array($tmpDir . '/.')); |
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$tar = Lib::cmd('tar', array('c', '-h', '-f', '-', '--no-recursion', '.' . $target)); |
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$dockerCp = Lib::cmd('docker ', array('cp', '-', $id . ':/.')); |
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return $exec->pass("${cd} && ${tar} | ${dockerCp}", array()); |
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} |
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/** |
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* Make a (recursive) directory copy from an existing directory (on |
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* the system pipelines is running, the source directory) into the |
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* containers target directory. |
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* |
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* The behaviour whether the target directory exists within the container |
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* or not depends on the underlying docker cp command. When writing this |
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* method assumption is it needs to, {@see TarCopier::extMakeEmptyDirectory()}. |
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* |
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* If the target path is empty or relative, the behaviour is undefined. |
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* |
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* @param Exec $exec |
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* @param string $id container id |
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* @param string $source directory |
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* @param string $target directory to create within container |
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* |
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* @return int status |
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*/ |
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public static function extCopyDirectory(Exec $exec, $id, $source, $target) |
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{ |
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if ('' === $source) { |
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throw new \InvalidArgumentException('empty source'); |
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} |
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$cd = Lib::cmd('cd', array($source . '/.')); |
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$tar = Lib::cmd('tar', array('c', '-f', '-', '.')); |
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$dockerCp = Lib::cmd('docker ', array('cp', '-', $id . ':' . $target)); |
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return $exec->pass("${cd} && ${tar} | ${dockerCp}", array()); |
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} |
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/** |
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* Make a (recursive) directory copy from an existing directory (on |
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* the system pipelines is running, the source directory) into the |
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* containers target directory. |
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* |
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* The target directory is created in the container with the user/group |
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* info from source. |
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* |
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* @param Exec $exec |
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* @param string $id container id |
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* @param string $source directory |
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* @param string $target directory to create within container |
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* |
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* @return int |
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*/ |
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public static function extDeployDirectory(Exec $exec, $id, $source, $target) |
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{ |
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$status = self::extMakeEmptyDirectory($exec, $id, $source, $target); |
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if (0 !== $status) { |
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return $status; |
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} |
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return self::extCopyDirectory($exec, $id, $source, $target); |
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} |
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} |
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