content: /**
   * Copyright 2020 Alibaba Group Holding Limited.
   *
   * <p>Licensed 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
   *
   * <p>http://www.apache.org/licenses/LICENSE-2.0
   *
   * <p>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.graphscope.groot.meta;
  
  import java.io.IOException;
  
  /**
   * Distributed, reliable storage used for SnapshotManager to persist Snapshot related meta. We can
   * implement this interface with ZooKeeper
   */
  public interface MetaStore {
  
      boolean exists(String path);
  
      byte[] read(String path) throws IOException;
  
      void write(String path, byte[] content) throws IOException;
  
      void delete(String path) throws IOException;
  }
  