409 lines
9.9 KiB
PHP
409 lines
9.9 KiB
PHP
<?php
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namespace W3TC;
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/**
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* Windows Azure Storage CDN engine
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*/
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class CdnEngine_Azure extends CdnEngine_Base {
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/**
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* Storage client object
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*
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* @var Microsoft_WindowsAzure_Storage_Blob
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*/
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var $_client = null;
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/**
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* PHP5 Constructor
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*
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* @param array $config
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*/
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function __construct( $config = array() ) {
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$config = array_merge( array(
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'user' => '',
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'key' => '',
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'container' => '',
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'cname' => array(),
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), $config );
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parent::__construct( $config );
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require_once W3TC_LIB_DIR . DIRECTORY_SEPARATOR . 'Azure' .
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DIRECTORY_SEPARATOR . 'loader.php';
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}
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/**
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* Inits storage client object
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*
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* @param string $error
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* @return boolean
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*/
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function _init( &$error ) {
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if ( empty( $this->_config['user'] ) ) {
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$error = 'Empty account name.';
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return false;
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}
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if ( empty( $this->_config['key'] ) ) {
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$error = 'Empty account key.';
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return false;
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}
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if ( empty( $this->_config['container'] ) ) {
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$error = 'Empty container name.';
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return false;
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}
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try {
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$connectionString = 'DefaultEndpointsProtocol=https;AccountName=' .
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$this->_config['user'] .
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';AccountKey=' . $this->_config['key'];
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$this->_client = \MicrosoftAzure\Storage\Common\ServicesBuilder::getInstance()->createBlobService(
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$connectionString);
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} catch ( \Exception $ex ) {
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$error = $ex->getMessage();
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return false;
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}
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return true;
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}
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/**
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* Uploads files to S3
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*
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* @param array $files
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* @param array $results
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* @param boolean $force_rewrite
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* @return boolean
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*/
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function upload( $files, &$results, $force_rewrite = false,
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$timeout_time = NULL ) {
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$error = null;
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if ( !$this->_init( $error ) ) {
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$results = $this->_get_results( $files, W3TC_CDN_RESULT_HALT, $error );
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return false;
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}
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foreach ( $files as $file ) {
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$remote_path = $file['remote_path'];
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$local_path = $file['local_path'];
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// process at least one item before timeout so that progress goes on
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if ( !empty( $results ) ) {
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if ( !is_null( $timeout_time ) && time() > $timeout_time ) {
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return 'timeout';
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}
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}
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$results[] = $this->_upload( $file, $force_rewrite );
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}
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return !$this->_is_error( $results );
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}
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/**
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* Uploads file
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*
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* @param string $local_path
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* @param string $remote_path
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* @param bool $force_rewrite
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* @return array
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*/
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function _upload( $file, $force_rewrite = false ) {
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$local_path = $file['local_path'];
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$remote_path = $file['remote_path'];
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if ( !file_exists( $local_path ) ) {
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return $this->_get_result( $local_path, $remote_path,
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W3TC_CDN_RESULT_ERROR, 'Source file not found.', $file );
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}
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$contents = @file_get_contents( $local_path );
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$md5 = md5( $contents ); // @md5_file( $local_path );
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$content_md5 = $this->_get_content_md5( $md5 );
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if ( !$force_rewrite ) {
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try {
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$propertiesResult = $this->_client->getBlobProperties( $this->_config['container'], $remote_path );
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$p = $propertiesResult->getProperties();
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$local_size = @filesize( $local_path );
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if ( $local_size == $p->getContentLength() && $content_md5 === $p->getContentMD5() ) {
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return $this->_get_result( $local_path, $remote_path,
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W3TC_CDN_RESULT_OK, 'File up-to-date.', $file );
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}
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} catch ( \Exception $exception ) {
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}
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}
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$headers = $this->get_headers_for_file( $file );
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try {
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// $headers
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$options = new \MicrosoftAzure\Storage\Blob\Models\CreateBlobOptions();
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$options->setBlobContentMD5( $content_md5 );
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if ( isset( $headers['Content-Type'] ) )
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$options->setBlobContentType( $headers['Content-Type'] );
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if ( isset( $headers['Cache-Control'] ) )
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$options->setBlobCacheControl( $headers['Cache-Control'] );
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$this->_client->createBlockBlob( $this->_config['container'],
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$remote_path, $contents, $options );
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} catch ( \Exception $exception ) {
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return $this->_get_result( $local_path, $remote_path,
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W3TC_CDN_RESULT_ERROR,
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sprintf( 'Unable to put blob (%s).', $exception->getMessage() ),
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$file );
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}
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return $this->_get_result( $local_path, $remote_path, W3TC_CDN_RESULT_OK,
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'OK', $file );
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}
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/**
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* Deletes files from storage
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*
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* @param array $files
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* @param array $results
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* @return boolean
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*/
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function delete( $files, &$results ) {
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$error = null;
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if ( !$this->_init( $error ) ) {
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$results = $this->_get_results( $files, W3TC_CDN_RESULT_HALT, $error );
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return false;
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}
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foreach ( $files as $file ) {
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$local_path = $file['local_path'];
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$remote_path = $file['remote_path'];
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try {
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$r = $this->_client->deleteBlob( $this->_config['container'], $remote_path );
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$results[] = $this->_get_result( $local_path, $remote_path,
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W3TC_CDN_RESULT_OK, 'OK', $file );
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} catch ( \Exception $exception ) {
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$results[] = $this->_get_result( $local_path, $remote_path,
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W3TC_CDN_RESULT_ERROR,
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sprintf( 'Unable to delete blob (%s).', $exception->getMessage() ),
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$file );
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}
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}
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return !$this->_is_error( $results );
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}
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/**
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* Tests S3
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*
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* @param string $error
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* @return boolean
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*/
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function test( &$error ) {
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if ( !parent::test( $error ) ) {
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return false;
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}
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$string = 'test_azure_' . md5( time() );
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if ( !$this->_init( $error ) ) {
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return false;
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}
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try {
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$containers = $this->_client->listContainers();
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to list containers (%s).', $exception->getMessage() );
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return false;
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}
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$container = null;
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foreach ( $containers->getContainers() as $_container ) {
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if ( $_container->getName() == $this->_config['container'] ) {
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$container = $_container;
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break;
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}
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}
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if ( !$container ) {
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$error = sprintf( 'Container doesn\'t exist: %s.', $this->_config['container'] );
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return false;
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}
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try {
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$this->_client->createBlockBlob( $this->_config['container'], $string, $string );
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to create blob (%s).', $exception->getMessage() );
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return false;
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}
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try {
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$propertiesResult = $this->_client->getBlobProperties( $this->_config['container'], $string );
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$p = $propertiesResult->getProperties();
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$size = $p->getContentLength();
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$md5 = $p->getContentMD5();
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to get blob properties (%s).', $exception->getMessage() );
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return false;
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}
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if ( $size != strlen( $string ) || $this->_get_content_md5( md5( $string ) ) != $md5 ) {
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try {
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$this->_client->deleteBlob( $this->_config['container'], $string );
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} catch ( \Exception $exception ) {
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}
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$error = 'Blob data properties are not equal.';
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return false;
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}
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try {
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$getBlob = $this->_client->getBlob( $this->_config['container'], $string );
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$dataStream = $getBlob->getContentStream();
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$data = stream_get_contents( $dataStream );
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to get blob data (%s).', $exception->getMessage() );
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return false;
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}
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if ( $data != $string ) {
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try {
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$this->_client->deleteBlob( $this->_config['container'], $string );
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} catch ( \Exception $exception ) {
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}
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$error = 'Blob datas are not equal.';
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return false;
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}
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try {
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$this->_client->deleteBlob( $this->_config['container'], $string );
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to delete blob (%s).', $exception->getMessage() );
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return false;
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}
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return true;
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}
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/**
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* Returns CDN domain
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*
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* @return array
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*/
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function get_domains() {
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if ( !empty( $this->_config['cname'] ) ) {
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return (array) $this->_config['cname'];
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} elseif ( !empty( $this->_config['user'] ) ) {
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$domain = sprintf( '%s.blob.core.windows.net', $this->_config['user'] );
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return array(
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$domain
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);
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}
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return array();
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}
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/**
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* Returns via string
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*
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* @return string
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*/
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function get_via() {
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return sprintf( 'Windows Azure Storage: %s', parent::get_via() );
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}
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/**
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* Creates bucket
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*
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* @param string $error
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* @return boolean
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*/
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function create_container() {
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if ( !$this->_init( $error ) ) {
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throw new \Exception( $error );
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}
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try {
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$containers = $this->_client->listContainers();
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to list containers (%s).', $exception->getMessage() );
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throw new \Exception( $error );
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}
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if ( in_array( $this->_config['container'], (array) $containers ) ) {
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$error = sprintf( 'Container already exists: %s.', $this->_config['container'] );
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throw new \Exception( $error );
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}
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try {
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$createContainerOptions = new \MicrosoftAzure\Storage\Blob\Models\CreateContainerOptions();
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$createContainerOptions->setPublicAccess(
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\MicrosoftAzure\Storage\Blob\Models\PublicAccessType::CONTAINER_AND_BLOBS );
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$this->_client->createContainer( $this->_config['container'], $createContainerOptions );
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to create container: %s (%s)', $this->_config['container'], $exception->getMessage() );
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throw new \Exception( $error );
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}
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}
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/**
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* Returns Content-MD5 header value
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*
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* @param string $string
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* @return string
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*/
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function _get_content_md5( $md5 ) {
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return base64_encode( pack( 'H*', $md5 ) );
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}
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/**
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* Formats object URL
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*
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* @param string $path
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* @return string
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*/
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function _format_url( $path ) {
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$domain = $this->get_domain( $path );
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if ( $domain && !empty( $this->_config['container'] ) ) {
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$scheme = $this->_get_scheme();
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$url = sprintf( '%s://%s/%s/%s', $scheme, $domain, $this->_config['container'], $path );
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return $url;
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}
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return false;
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}
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/**
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* How and if headers should be set
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*
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* @return string W3TC_CDN_HEADER_NONE, W3TC_CDN_HEADER_UPLOADABLE, W3TC_CDN_HEADER_MIRRORING
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*/
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function headers_support() {
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return W3TC_CDN_HEADER_UPLOADABLE;
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}
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function get_prepend_path( $path ) {
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$path = parent::get_prepend_path( $path );
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$path = $this->_config['container'] ? trim( $path, '/' ) . '/' . trim( $this->_config['container'], '/' ): $path;
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return $path;
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}
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}
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