Scalr\Service\OpenStack\OpenStack::hasService PHP Méthode

    public function hasService($serviceName, $ns = null)
    {
        if (!isset($this->cache['services'])) {
            $this->listServices();
        }
        return array_key_exists((isset($ns) ? $ns . ':' : '') . $serviceName, $this->cache['services']);
    }

 private function saveOpenstack()
 {
     $pars = array();
     $enabled = false;
     $platform = $this->getParam('platform');
     $currentCloudCredentials = $this->env->keychain($platform);
     $bNew = !$currentCloudCredentials->isEnabled();
     if (!$bNew) {
         $oldUrl = $currentCloudCredentials->properties[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL];
     }
     if ($this->getParam("{$platform}_is_enabled")) {
         $enabled = true;
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL] = trim($this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL, 'string', 'KeyStone URL required', $platform));
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_SSL_VERIFYPEER] = trim($this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_SSL_VERIFYPEER, 'bool', '', $platform));
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_USERNAME] = $this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_USERNAME, 'string', 'Username required', $platform);
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_PASSWORD] = $this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_PASSWORD, 'password', '', $platform, false);
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_API_KEY] = $this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_API_KEY, 'string', '', $platform);
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_IDENTITY_VERSION] = OpenStackConfig::parseIdentityVersion($pars[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL]);
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_TENANT_NAME] = $this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_TENANT_NAME, 'string', '', $platform);
         $pars[Entity\CloudCredentialsProperty::OPENSTACK_DOMAIN_NAME] = $this->checkVar(Entity\CloudCredentialsProperty::OPENSTACK_DOMAIN_NAME, 'string', '', $platform);
         if (empty($this->checkVarError) && empty($pars[Entity\CloudCredentialsProperty::OPENSTACK_PASSWORD]) && empty($pars[Entity\CloudCredentialsProperty::OPENSTACK_API_KEY])) {
             $this->checkVarError['api_key'] = $this->checkVarError['password'] = '******';
         }
     }
     /* @var $config Yaml */
     $config = $this->env->getContainer()->config;
     if (isset($platform) && $config->defined("scalr.{$platform}.use_proxy") && $config("scalr.{$platform}.use_proxy") && in_array($config('scalr.connections.proxy.use_on'), ['both', 'scalr'])) {
         $proxySettings = $config('scalr.connections.proxy');
     } else {
         $proxySettings = null;
     }
     if (count($this->checkVarError)) {
         $this->response->failure();
         $this->response->data(array('errors' => $this->checkVarError));
     } else {
         if ($this->getParam($platform . "_is_enabled")) {
             $os = new OpenStack(new OpenStackConfig($pars[Entity\CloudCredentialsProperty::OPENSTACK_USERNAME], $pars[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL], 'fake-region', $pars[Entity\CloudCredentialsProperty::OPENSTACK_API_KEY], null, null, $pars[Entity\CloudCredentialsProperty::OPENSTACK_PASSWORD], $pars[Entity\CloudCredentialsProperty::OPENSTACK_TENANT_NAME], $pars[Entity\CloudCredentialsProperty::OPENSTACK_DOMAIN_NAME], $pars[Entity\CloudCredentialsProperty::OPENSTACK_IDENTITY_VERSION], $proxySettings));
             //It throws an exception on failure
             $zones = $os->listZones();
             $zone = array_shift($zones);
             $os = new OpenStack(new OpenStackConfig($pars[Entity\CloudCredentialsProperty::OPENSTACK_USERNAME], $pars[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL], $zone->name, $pars[Entity\CloudCredentialsProperty::OPENSTACK_API_KEY], null, null, $pars[Entity\CloudCredentialsProperty::OPENSTACK_PASSWORD], $pars[Entity\CloudCredentialsProperty::OPENSTACK_TENANT_NAME], $pars[Entity\CloudCredentialsProperty::OPENSTACK_DOMAIN_NAME], $pars[Entity\CloudCredentialsProperty::OPENSTACK_IDENTITY_VERSION], $proxySettings));
             // Check SG Extension
             $pars[Entity\CloudCredentialsProperty::OPENSTACK_EXT_SECURITYGROUPS_ENABLED] = (int) $os->servers->isExtensionSupported(ServersExtension::securityGroups());
             // Check Floating Ips Extension
             $pars[Entity\CloudCredentialsProperty::OPENSTACK_EXT_FLOATING_IPS_ENABLED] = (int) $os->servers->isExtensionSupported(ServersExtension::floatingIps());
             // Check Cinder Extension
             $pars[Entity\CloudCredentialsProperty::OPENSTACK_EXT_CINDER_ENABLED] = (int) $os->hasService('volume');
             // Check Swift Extension
             $pars[Entity\CloudCredentialsProperty::OPENSTACK_EXT_SWIFT_ENABLED] = (int) $os->hasService('object-store');
             // Check LBaas Extension
             $pars[Entity\CloudCredentialsProperty::OPENSTACK_EXT_LBAAS_ENABLED] = !in_array($platform, array(SERVER_PLATFORMS::RACKSPACENG_US, SERVER_PLATFORMS::RACKSPACENG_UK)) && $os->hasService('network') ? (int) $os->network->isExtensionSupported('lbaas') : 0;
         }
         $this->db->BeginTrans();
         try {
             $this->env->enablePlatform($platform, $enabled);
             if ($enabled) {
                 $this->makeCloudCredentials($platform, $pars);
                 if ($this->getContainer()->analytics->enabled && ($bNew || $oldUrl !== $pars[Entity\CloudCredentialsProperty::OPENSTACK_KEYSTONE_URL])) {
                     $this->getContainer()->analytics->notifications->onCloudAdd($platform, $this->env, $this->user);
                 }
             }
             if (!$this->user->getAccount()->getSetting(Scalr_Account::SETTING_DATE_ENV_CONFIGURED)) {
                 $this->user->getAccount()->setSetting(Scalr_Account::SETTING_DATE_ENV_CONFIGURED, time());
             }
             $this->response->success('Cloud credentials have been ' . ($enabled ? 'saved' : 'removed from Scalr'));
             $this->response->data(array('enabled' => $enabled));
         } catch (Exception $e) {
             $this->db->RollbackTrans();
             throw new Exception(_('Failed to save ' . ucfirst($platform) . ' settings'));
         }
         $this->db->CommitTrans();
     }
 }