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 org.apache.distributedlog.acl;
  
  /**
   * Access Control on stream operations.
   */
  public interface AccessControlManager {
  
      /**
       * Whether allowing writing to a stream.
       *
       * @param stream
       *          Stream to write
       * @return true if allowing writing to the given stream, otherwise false.
       */
      boolean allowWrite(String stream);
  
      /**
       * Whether allowing truncating a given stream.
       *
       * @param stream
       *          Stream to truncate
       * @return true if allowing truncating a given stream.
       */
      boolean allowTruncate(String stream);
  
      /**
       * Whether allowing deleting a given stream.
       *
       * @param stream
       *          Stream to delete
       * @return true if allowing deleting a given stream.
       */
      boolean allowDelete(String stream);
  
      /**
       * Whether allowing proxies to acquire a given stream.
       *
       * @param stream
       *          stream to acquire
       * @return true if allowing proxies to acquire the given stream.
       */
      boolean allowAcquire(String stream);
  
      /**
       * Whether allowing proxies to release ownership for a given stream.
       *
       * @param stream
       *          stream to release
       * @return true if allowing proxies to release a given stream.
       */
      boolean allowRelease(String stream);
  
      /**
       * Close the access control manager.
       */
      void close();
  }
  