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<?php |
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/* this file is part of pipelines */ |
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namespace Ktomk\Pipelines\Cli; |
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use UnexpectedValueException; |
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/** |
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* Php wrapper for the Docker CLI |
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*/ |
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class Docker |
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{ |
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/** |
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* @var Exec |
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*/ |
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private $exec; |
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private $name = 'docker'; |
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/** |
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* @param null|Exec $exec [optional] |
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* |
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* @return Docker |
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*/ |
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public static function create(Exec $exec = null) |
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{ |
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if (null === $exec) { |
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$exec = new Exec(); |
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} |
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return new self($exec); |
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} |
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public function __construct(Exec $exec) |
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{ |
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$this->exec = $exec; |
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} |
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/** |
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* @throws \RuntimeException |
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* @return bool |
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*/ |
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public function hasCommand() |
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{ |
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$status = $this->exec->capture( |
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'command', |
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array('-v', $this->name) |
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); |
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return 0 === $status; |
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} |
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/** |
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* @throws \RuntimeException |
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* @throws UnexpectedValueException |
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* @return string |
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*/ |
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public function getVersion() |
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{ |
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$status = $this->exec->capture( |
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$this->name, |
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array('version', '--format', '{{.Server.Version}}'), |
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$out |
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); |
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if (0 !== $status) { |
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return null; |
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} |
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# parse version string |
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$return = preg_match( |
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'~^(\d+\\.\d+\\.\d+(?:-ce)?|master-dockerproject-20(?:19|[2-9]\d)-[01]\d-[0-3][1-9])\\n$~', |
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$out, |
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$matches |
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); |
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if (false === $return) { |
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throw new UnexpectedValueException('Regex pattern failed'); // @codeCoverageIgnore |
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} |
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if (0 === $return) { |
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trigger_error( |
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sprintf('Failed to parse "%s" for Docker version', $out) |
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); |
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return '0.0.0-err'; |
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} |
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return $matches[1]; |
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} |
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/** |
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* inspect a container for a mount on $mountPoint on the host system and |
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* return it (the "device"). |
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* |
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* @param string $container name or id to inspect |
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* @param string $mountPoint absolute path in the container to search for a mount for |
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* |
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* @return null|string null if no such mount point in the container, path on host if |
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*/ |
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public function hostConfigBind($container, $mountPoint) |
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{ |
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$exec = $this->exec; |
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$status = $exec->capture('docker', array( |
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'inspect', $container, |
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), $out); |
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if (0 !== $status) { |
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return null; |
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} |
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$data = json_decode($out, true); |
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if (!isset($data[0]['HostConfig']['Binds'])) { |
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return null; |
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} |
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$binds = $data[0]['HostConfig']['Binds']; |
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foreach ($binds as $bind) { |
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$pattern = sprintf('(^([^:]+):%s(?::ro)?$)', preg_quote($mountPoint, '()')); |
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if (preg_match($pattern, $bind, $matches)) { |
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return $matches[1]; |
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} |
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} |
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1 |
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return null; |
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} |
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/** |
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* inspect a container for a mount on $mountPoint on the host system and |
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* return it (the "device"). |
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* |
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* @param string $container name or id to inspect |
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* @param string $mountPoint absolute path to search for a host mount for |
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* |
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* @return bool|string |
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*/ |
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4 |
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public function hostDevice($container, $mountPoint) |
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{ |
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$result = $this->hostConfigBind($container, $mountPoint); |
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if (null === $result) { |
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return $mountPoint; |
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} |
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1 |
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return $result; |
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} |
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149
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/** |
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150
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* @return Docker\ProcessManager |
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151
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*/ |
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152
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1 |
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public function getProcessManager() |
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153
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{ |
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154
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1 |
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return new Docker\ProcessManager($this->exec); |
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155
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} |
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156
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} |
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|
ktomk /
pipelines
