/codes-php/phpjakarta/WindowsAzure/ServiceRuntime/Internal/XmlRoleEnvironmentDataDeserializer.php

<?php



/**

 * LICENSE: Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 * 

 * PHP version 5

 *

 * @category  Microsoft

 * @package   WindowsAzure\ServiceRuntime\Internal

 * @author    Azure PHP SDK <azurephpsdk@microsoft.com>

 * @copyright 2012 Microsoft Corporation

 * @license   http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0

 * @link      https://github.com/windowsazure/azure-sdk-for-php

 */



namespace WindowsAzure\ServiceRuntime\Internal;

use WindowsAzure\Common\Internal\Utilities;



/**

 * The XML role environment data deserializer.

 *

 * @category  Microsoft

 * @package   WindowsAzure\ServiceRuntime\Internal

 * @author    Azure PHP SDK <azurephpsdk@microsoft.com>

 * @copyright 2012 Microsoft Corporation

 * @license   http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0

 * @version   Release: @package_version@

 * @link      https://github.com/windowsazure/azure-sdk-for-php

 */

class XmlRoleEnvironmentDataDeserializer

{

    /**

     * Deserializes the role environment data.

     * 

     * @param IInputChannel $inputChannel The input Channel.

     * 

     * @return RoleEnvironmentData

     */

    public function deserialize($inputChannel)

    {

        $document = stream_get_contents($inputChannel);



        $environmentInfo = Utilities::unserialize($document);



        $configurationSettings = $this->_translateConfigurationSettings(

            $environmentInfo

        );



        $localResources  = $this->_translateLocalResources($environmentInfo);

        $currentInstance = $this

            ->_translateCurrentInstance($environmentInfo);        

        $roles           = $this->_translateRoles(

            $environmentInfo,

            $currentInstance,

            $environmentInfo['CurrentInstance']['@attributes']['roleName']

        );



        return new RoleEnvironmentData(

            $environmentInfo['Deployment']['@attributes']['id'],

            $configurationSettings,

            $localResources,

            $currentInstance,

            $roles,

            ($environmentInfo['Deployment']['@attributes']['emulated'] == 'true')

        );

    }

    

    /**

     * Translates the configuration settings.

     * 

     * @param string $environmentInfo The role environment info.

     * 

     * @return array 

     */

    private function _translateConfigurationSettings($environmentInfo)

    {

        $configurationSettings = array();



        $settingsInfo = Utilities::tryGetKeysChainValue(

            $environmentInfo,

            'CurrentInstance',

            'ConfigurationSettings',

            'ConfigurationSetting'

        );

        

        if (!is_null($settingsInfo)) {

            if (array_key_exists('@attributes', $settingsInfo)) {

                $settingsInfo = array(0 => $settingsInfo);

            }



            foreach ($settingsInfo as $settingInfo) {

                $configurationSettings

                    [$settingInfo['@attributes']['name']] = $settingInfo

                        ['@attributes']['value'];

            }

        }



        return $configurationSettings;

    }

    

    /**

     * Translates the local resources.

     * 

     * @param string $environmentInfo The role environment info.

     * 

     * @return array 

     */

    private function _translateLocalResources($environmentInfo)

    {

        $localResourcesMap = array();



        $localResourcesInfo = Utilities::tryGetKeysChainValue(

            $environmentInfo,

            'CurrentInstance',

            'LocalResources',

            'LocalResource'

        );

        

        if (!is_null($localResourcesInfo)) {

            if (array_key_exists('@attributes', $localResourcesInfo)) {

                $localResourcesInfo = array(0 => $localResourcesInfo);

            }



            foreach ($localResourcesInfo as $localResourceInfo) {

                $localResource = new LocalResource(

                    $localResourceInfo['@attributes']['sizeInMB'],

                    $localResourceInfo['@attributes']['name'],

                    $localResourceInfo['@attributes']['path']

                );

                

                $localResourcesMap[$localResource->getName()] = $localResource;

            }

        }



        return $localResourcesMap;

    }

    

    /**

     * Translates the roles.

     * 

     * @param string       $environmentInfo The role environment info.

     * @param RoleInstance $currentInstance The current instance info.

     * @param string       $currentRole     The current role.

     * 

     * @return array

     */

    private function _translateRoles($environmentInfo, $currentInstance,

        $currentRole

    ) {

        $rolesMap = array();



        $rolesInfo = Utilities::tryGetKeysChainValue(

            $environmentInfo,

            'Roles',

            'Role'

        );

        

        if (!is_null($rolesInfo)) {

            if (array_key_exists('@attributes', $rolesInfo)) {

                $rolesInfo = array(0 => $rolesInfo);

            }



            foreach ($rolesInfo as $roleInfo) {

                $roleInstances = $this->_translateRoleInstances($roleInfo);



                if ($roleInfo['@attributes']['name'] == $currentRole) {

                    $roleInstances[$currentInstance->getId()] = $currentInstance;

                }



                $role = new Role($roleInfo['@attributes']['name'], $roleInstances);

                

                foreach ($roleInstances as $instance) {

                    $instance->setRole($role);

                }

                

                $rolesMap[$roleInfo['@attributes']['name']] = $role;

            }

        }

        

        if (!array_key_exists($currentRole, $rolesMap)) {

            $roleInstances                            = array();

            $roleInstances[$currentInstance->getId()] = $currentInstance;



            $singleRole = new Role($currentRole, $roleInstances);

            $currentInstance->setRole($singleRole);



            $rolesMap[$currentRole] = $singleRole;

        }



        return $rolesMap;

    }

    

    /**

     * Translates the role instances.

     * 

     * @param string $instancesInfo The instance info.

     * 

     * @return array

     */

    private function _translateRoleInstances($instancesInfo)

    {

        $roleInstanceMap = array();



        $instances = Utilities::tryGetKeysChainValue(

            $instancesInfo,

            'Instances',

            'Instance'

        );

        

        if (!is_null($instances)) {

            if (array_key_exists('@attributes', $instances)) {

                $instances = array(0 => $instances);

            }



            foreach ($instances as $instanceInfo) {

                $endpoints = $this->_translateRoleInstanceEndpoints(

                    $instanceInfo['Endpoints']['Endpoint']

                );



                $roleInstance = new RoleInstance(

                    $instanceInfo['@attributes']['id'],

                    $instanceInfo['@attributes']['faultDomain'],

                    $instanceInfo['@attributes']['updateDomain'],

                    $endpoints

                );

                

                $roleInstanceMap

                    [$instanceInfo['@attributes']['id']] = $roleInstance;

            }

        }



        return $roleInstanceMap;

    }

    

    /**

     * Translates the role instance endpoints.

     * 

     * @param string $endpointsInfo The endpoints info.

     * 

     * @return array

     */

    private function _translateRoleInstanceEndpoints($endpointsInfo)

    {

        $endpointsMap = array();



        $endpoints = $endpointsInfo;

        if (array_key_exists('@attributes', $endpoints)) {

            $endpoints = array(0 => $endpointsInfo);

        }



        foreach ($endpoints as $endpoint) {

            $roleInstanceEndpoint = new RoleInstanceEndpoint(

                $endpoint['@attributes']['protocol'],

                $endpoint['@attributes']['address'],

                intval($endpoint['@attributes']['port'], 10)

            );

            

            $endpointsMap[$endpoint['@attributes']['name']] = $roleInstanceEndpoint;

        }



        return $endpointsMap;

    }

    

    /**

     * Translates the current instance info.

     * 

     * @param string $environmentInfo The environment info.

     * 

     * @return RoleInstance

     */

    private function _translateCurrentInstance($environmentInfo)

    {

        $endpoints = array();

        

        $endpointsInfo = Utilities::tryGetKeysChainValue(

            $environmentInfo,

            'CurrentInstance',

            'Endpoints',

            'Endpoint'

        );

        

        if (!is_null($endpointsInfo)) {

            $endpoints = $this->_translateRoleInstanceEndpoints($endpointsInfo);

        }



        $currentInstance = new RoleInstance(

            $environmentInfo['CurrentInstance']['@attributes']['id'],

            $environmentInfo['CurrentInstance']['@attributes']['faultDomain'],

            $environmentInfo['CurrentInstance']['@attributes']['updateDomain'],

            $endpoints

        );



        foreach ($currentInstance->getInstanceEndpoints() as $endpoint) {

            $endpoint->setRoleInstance($currentInstance);

        }

        

        return $currentInstance;

    }

}