336 lines
8.6 KiB
PHP
336 lines
8.6 KiB
PHP
<?php
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namespace W3TC;
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/**
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* Rackspace Cloud Files CDN engine
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*/
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class CdnEngine_RackSpaceCloudFiles extends CdnEngine_Base {
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private $_access_state;
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private $_container;
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private $_api_files;
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private $_api_cdn;
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function __construct( $config = array() ) {
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$config = array_merge( array(
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'user_name' => '',
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'api_key' => '',
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'region' => '',
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'container' => '',
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'cname' => array(),
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'access_state' => ''
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), $config );
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$this->_container = $config['container'];
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$this->_new_access_state_callback = $config['new_access_state_callback'];
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// init access state
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$this->_access_state = @json_decode( $config['access_state'], true );
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if ( !is_array( $this->_access_state ) )
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$this->_access_state = array();
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$this->_access_state = array_merge( array(
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'access_token' => '',
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'access_region_descriptor' => array(),
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'host_http' => '',
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'host_https' => ''
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), $this->_access_state );
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parent::__construct( $config );
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$this->_create_api(
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array( $this, '_on_new_access_requested_api_files' ),
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array( $this, '_on_new_access_requested_api_cdn' ) );
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}
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private function _create_api( $new_access_required_callback_api_files,
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$new_access_required_callback_api_cdn ) {
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$this->_api_files = new Cdn_RackSpace_Api_CloudFiles( array(
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'access_token' => $this->_access_state['access_token'],
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'access_region_descriptor' => $this->_access_state['access_region_descriptor'],
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'new_access_required' => $new_access_required_callback_api_files ) );
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$this->_api_cdn = new Cdn_RackSpace_Api_CloudFilesCdn( array(
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'access_token' => $this->_access_state['access_token'],
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'access_region_descriptor' => $this->_access_state['access_region_descriptor'],
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'new_access_required' => $new_access_required_callback_api_cdn ) );
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}
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/**
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* Called when new access token issued by api objects
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*/
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public function _on_new_access_requested_api_files() {
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$this->_on_new_access_requested();
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return $this->_api_files;
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}
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/**
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* Called when new access token issued by api objects
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*/
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public function _on_new_access_requested_api_cdn() {
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$this->_on_new_access_requested();
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return $this->_api_cdn;
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}
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private function _on_new_access_requested() {
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$r = Cdn_RackSpace_Api_Tokens::authenticate( $this->_config['user_name'],
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$this->_config['api_key'] );
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if ( !isset( $r['access_token'] ) || !isset( $r['services'] ) )
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throw new \Exception( 'Authentication failed' );
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$r['regions'] = Cdn_RackSpace_Api_Tokens::cloudfiles_services_by_region(
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$r['services'] );
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if ( !isset( $r['regions'][$this->_config['region']] ) )
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throw new \Exception( 'Region ' . $this->_config['region'] . ' not found' );
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$this->_access_state['access_token'] = $r['access_token'];
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$this->_access_state['access_region_descriptor'] =
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$r['regions'][$this->_config['region']];
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$this->_create_api(
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array( $this, '_on_new_access_requested_second_time' ),
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array( $this, '_on_new_access_requested_second_time' ) );
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$c = $this->_api_cdn->container_get( $this->_config['container'] );
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$this->_access_state['host_http'] = substr( $c['x-cdn-uri'], 7 );
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$this->_access_state['host_https'] = substr( $c['x-cdn-ssl-uri'], 8 );
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call_user_func( $this->_new_access_state_callback,
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json_encode( $this->_access_state ) );
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}
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private function _on_new_access_requested_second_time() {
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throw new \Exception( 'Authentication failed' );
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}
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/**
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* Formats URL
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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 ( $domain ) {
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$scheme = $this->_get_scheme();
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// it does not support '+', requires '%2B'
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$path = str_replace( '+', '%2B', $path );
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$url = sprintf( '%s://%s/%s', $scheme, $domain, $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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* Uploads files to CDN
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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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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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// 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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if ( !file_exists( $local_path ) ) {
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$results[] = $this->_get_result( $local_path, $remote_path,
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W3TC_CDN_RESULT_ERROR, 'Source file not found.', $file );
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continue;
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}
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$file_content = file_get_contents( $local_path );
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$do_write = true;
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// rewrite is optional, check md5
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if ( !$force_rewrite ) {
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$object_meta = null;
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try {
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$object_meta = $this->_api_files->object_get_meta_or_null(
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$this->_container, $remote_path );
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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 check object (%s).', $exception->getMessage() ),
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$file );
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$do_write = false;
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}
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if ( is_array( $object_meta ) && isset( $object_meta['etag'] ) ) {
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$md5_actual = md5( $file_content );
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if ( $md5_actual == $object_meta['etag'] ) {
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$results[] = $this->_get_result( $local_path,
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$remote_path, W3TC_CDN_RESULT_OK,
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'Object up-to-date.', $file );
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$do_write = false;
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}
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}
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}
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if ( $do_write ) {
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try {
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$this->_api_files->object_create( array(
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'container' => $this->_container,
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'name' => $remote_path,
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'content_type' => Util_Mime::get_mime_type( $local_path ),
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'content' => $file_content ) );
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$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 create object (%s).', $exception->getMessage() ),
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$file );
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}
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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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* Deletes files from CDN
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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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foreach ( $files as $file ) {
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$local_path = $file['local_path'];
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$remote_path = $file['remote_path'];
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try {
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$this->_api_files->object_delete( $this->_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, $remote_path,
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W3TC_CDN_RESULT_ERROR,
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sprintf( 'Unable to delete object (%s).',
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$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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* Test CDN connection
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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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$filename = 'test_rscf_' . md5( time() );
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try {
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$object = $this->_api_files->object_create( array(
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'container' => $this->_container,
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'name' => $filename,
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'content_type' => 'text/plain',
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'content' => $filename ) );
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to write object (%s).', $exception->getMessage() );
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return false;
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}
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$result = true;
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try {
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$r = wp_remote_get( 'http://' . $this->get_host_http() . '/' . $filename );
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if ( $r['body'] != $filename ) {
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$error = 'Failed to retrieve object after storing.';
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$result = false;
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}
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to read object (%s).', $exception->getMessage() );
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$result = false;
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}
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try {
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$this->_api_files->object_delete( $this->_container, $filename );
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} catch ( \Exception $exception ) {
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$error = sprintf( 'Unable to delete object (%s).', $exception->getMessage() );
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$result = false;
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}
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return $result;
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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 ( Util_Environment::is_https() ) {
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if ( !empty( $this->_config['cname'] ) ) {
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return (array) $this->_config['cname'];
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}
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return array( $this->get_host_https() );
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} else {
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if ( !empty( $this->_config['cname'] ) ) {
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return (array) $this->_config['cname'];
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}
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return array( $this->get_host_http() );
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}
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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( 'Rackspace Cloud Files: %s', parent::get_via() );
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}
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public function get_host_http() {
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if ( empty( $this->_access_state['host_http'] ) )
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$this->_on_new_access_requested();
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return $this->_access_state['host_http'];
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}
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public function get_host_https() {
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if ( empty( $this->_access_state['host_https'] ) )
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$this->_on_new_access_requested();
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return $this->_access_state['host_https'];
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}
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}
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