<?php
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/**
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* Copyright 2019 Huawei Technologies Co.,Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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* this file except in compliance with the License. You may obtain a copy of the
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* License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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namespace Obs\Internal\Common;
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use Obs\ObsClient;
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class ObsTransform implements ITransform {
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private static $instance;
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private function __construct(){}
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public static function getInstance() {
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if (!(self::$instance instanceof ObsTransform)) {
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self::$instance = new ObsTransform();
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}
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return self::$instance;
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}
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public function transform($sign, $para) {
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if ($sign === 'aclHeader') {
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$para = $this->transAclHeader($para);
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} else if ($sign === 'aclUri') {
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$para = $this->transAclGroupUri($para);
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} else if ($sign == 'event') {
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$para = $this->transNotificationEvent($para);
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} else if ($sign == 'storageClass') {
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$para = $this->transStorageClass($para);
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}
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return $para;
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}
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private function transAclHeader($para) {
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if ($para === ObsClient::AclAuthenticatedRead || $para === ObsClient::AclBucketOwnerRead ||
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$para === ObsClient::AclBucketOwnerFullControl || $para === ObsClient::AclLogDeliveryWrite) {
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$para = null;
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}
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return $para;
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}
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private function transAclGroupUri($para) {
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if ($para === ObsClient::GroupAllUsers) {
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$para = ObsClient::AllUsers;
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}
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return $para;
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}
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private function transNotificationEvent($para) {
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$pos = strpos($para, 's3:');
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if ($pos !== false && $pos === 0) {
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$para = substr($para, 3);
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}
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return $para;
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}
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private function transStorageClass($para) {
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$search = array('STANDARD', 'STANDARD_IA', 'GLACIER');
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$repalce = array(ObsClient::StorageClassStandard, ObsClient::StorageClassWarm, ObsClient::StorageClassCold);
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$para = str_replace($search, $repalce, $para);
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return $para;
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}
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}
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