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<?php

namespace Docker\Http;

use Docker\Http\Adapter\DockerAdapter;

use GuzzleHttp\Client;

class DockerClient extends Client

{

/**

* @param array $config Config for http client (guzzle)

* @param string $entrypoint Docker entrypoint

* @param array $context Stream context options

* @param bool $useTls Use tls

*/

public function __construct(array $config = [], $entrypoint = null, $context = null, $useTls = false)

{

if (null === $entrypoint) {

// @TODO Force entrypoint in stable version

if (!getenv('DOCKER_HOST')) {

trigger_error('Not specified entrypoint is deprecated and will throw an exception in the stable version', E_USER_DEPRECATED);

}

$entrypoint = getenv('DOCKER_HOST') ? getenv('DOCKER_HOST') : 'unix:///var/run/docker.sock';

}

if (is_array($context)) {

$context = stream_context_create($context);

}

if (!isset($config['adapter'])) {

if (isset($config['message_factory'])) {

$messageFactory = $config['message_factory'];

} else {

$messageFactory = new MessageFactory();

}

$config['message_factory'] = $messageFactory;

$config['adapter'] = new DockerAdapter($messageFactory, $entrypoint, $context, $useTls);

}

parent::__construct($config);

}

/**

* Create a basic docker client with default configuration

*

* @param array $config Config for http client (guzzle)

*

* @return DockerClient

*/

public static function create(array $config = [])

{

return new self($config, 'unix:///var/run/docker.sock', null);

}

/**

* Create a docker client from environnement variable

*

* @param array $config Config for the http client (guzzle)

*

* @return DockerClient

*

* @throws \RuntimeException Throw exception when invalid environment variables are given

*/

public static function createWithEnv(array $config = [])

{

$entrypoint = getenv('DOCKER_HOST') ? getenv('DOCKER_HOST') : 'unix:///var/run/docker.sock';

$context = null;

$useTls = false;

if (getenv('DOCKER_TLS_VERIFY') && getenv('DOCKER_TLS_VERIFY') == 1) {

if (!getenv('DOCKER_CERT_PATH')) {

throw new \RuntimeException('Connection to docker has been set to use TLS, but no PATH is defined for certificate in DOCKER_CERT_PATH docker environnement variable');

}

$useTls = true;

$cafile = getenv('DOCKER_CERT_PATH').DIRECTORY_SEPARATOR.'ca.pem';

$certfile = getenv('DOCKER_CERT_PATH').DIRECTORY_SEPARATOR.'cert.pem';

$keyfile = getenv('DOCKER_CERT_PATH').DIRECTORY_SEPARATOR.'key.pem';

$peername = getenv('DOCKER_PEER_NAME') ? getenv('DOCKER_PEER_NAME') : 'boot2docker';

$fullcert = tempnam(sys_get_temp_dir(), 'docker-certfile');

file_put_contents($fullcert, file_get_contents($certfile));

file_put_contents($fullcert, file_get_contents($keyfile), FILE_APPEND);

$context = stream_context_create([

'ssl' => [

'cafile' => $cafile,

'local_cert' => $fullcert,

'peer_name' => $peername,

],

]);

}

return new self($config, $entrypoint, $context, $useTls);

}

}