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.celeborn.service.deploy.worker.shuffledb;
  
  import java.io.IOException;
  
  import org.rocksdb.RocksDBException;
  import org.rocksdb.WriteOptions;
  
  /**
   * RocksDB implementation of the local KV storage used to persist the shuffle state.
   *
   * <p>Note: code copied from Apache Spark.
   */
  public class RocksDB implements DB {
    private final org.rocksdb.RocksDB db;
    private final WriteOptions SYNC_WRITE_OPTIONS = new WriteOptions().setSync(true);
  
    public RocksDB(org.rocksdb.RocksDB db) {
      this.db = db;
    }
  
    @Override
    public void put(byte[] key, byte[] value) {
      try {
        db.put(key, value);
      } catch (RocksDBException e) {
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public void put(byte[] key, byte[] value, boolean sync) {
      try {
        if (sync) {
          db.put(SYNC_WRITE_OPTIONS, key, value);
        } else {
          db.put(key, value);
        }
      } catch (RocksDBException e) {
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public byte[] get(byte[] key) {
      try {
        return db.get(key);
      } catch (RocksDBException e) {
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public void delete(byte[] key) {
      try {
        db.delete(key);
      } catch (RocksDBException e) {
        throw new RuntimeException(e);
      }
    }
  
    @Override
    public DBIterator iterator() {
      return new RocksDBIterator(db.newIterator());
    }
  
    @Override
    public void close() throws IOException {
      db.close();
    }
  }
  