content: /*
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.
   *
   */
  
  package com.alibaba.cloudapp.filestore.aliyun.util;
  
  import com.aliyun.oss.OSS;
  import com.alibaba.cloudapp.exeption.CloudAppException;
  import com.alibaba.cloudapp.exeption.CloudAppInvalidRequestException;
  
  public class OSSUtil {
  
      /**
       * check bucket exists
       * @param oss client
       * @param bucketName bucketName
       * @throws CloudAppException when bucket not exists, or invalid name
       */
      public static void checkBucketExists(OSS oss, String bucketName)
              throws CloudAppException {
          if(bucketName == null) {
              throw new CloudAppInvalidRequestException("Bucket name is required");
          }
  
          if (!oss.doesBucketExist(bucketName)) {
              throw new CloudAppInvalidRequestException(
                      "Bucket " + bucketName + " does not exist");
          }
      }
  
  }
  