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.flink.streaming.connectors.pinot.filesystem;
  
  import java.io.IOException;
  import java.io.Serializable;
  import java.util.List;
  
  /**
   * Defines the interaction with a shared filesystem. The shared filesystem must be accessible from all
   * nodes within the cluster than run a partition of the {@link org.apache.flink.streaming.connectors.pinot.PinotSink}.
   */
  public interface FileSystemAdapter extends Serializable {
  
      /**
       * Writes a list of serialized elements to the shared filesystem.
       *
       * @param elements List of serialized elements
       * @return Path identifying the remote file
       * @throws IOException
       */
      String writeToSharedFileSystem(List<String> elements) throws IOException;
  
      /**
       * Reads a previously written list of serialized elements from the shared filesystem.
       *
       * @param path Path returned by {@link #writeToSharedFileSystem}
       * @return List of serialized elements read from the shared filesystem
       * @throws IOException
       */
      List<String> readFromSharedFileSystem(String path) throws IOException;
  
      /**
       * Deletes a file from the shared filesystem
       *
       * @param path Path returned by {@link #writeToSharedFileSystem}
       * @throws IOException
       */
      void deleteFromSharedFileSystem(String path) throws IOException;
  }
  