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.jstorm.cache;
  
  import backtype.storm.state.Serializer;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.utils.Utils;
  import com.alibaba.jstorm.cache.memory.InMemoryKvStoreManagerFactory;
  import com.alibaba.jstorm.cache.rocksdb.RocksDbKvStoreManagerFactory;
  import com.alibaba.jstorm.client.ConfigExtension;
  import com.alibaba.jstorm.utils.SerializerFactory;
  import org.slf4j.LoggerFactory;
  
  import java.io.IOException;
  import java.util.Map;
  
  public class KvStoreManagerFactory {
      private static final org.slf4j.Logger LOG = LoggerFactory.getLogger(KvStoreManagerFactory.class);
  
      public enum KvStoreType {
          memory("memory"), rocksdb("rocksdb");
  
          private String type;
          private KvStoreType(String type) {
              this.type = type;
          }
  
          @Override
          public String toString() {
              return type;
          }
      }
  
      private static KvStoreType getKvStoreType(Map conf) {
          String type = Utils.getString(conf.get(ConfigExtension.KV_STORE_TYPE), KvStoreType.rocksdb.toString());
          return KvStoreType.valueOf(type);
      }
  
      public static <T> IKvStoreManager<T> getKvStoreManager(Map conf, String storeName, String storePath, boolean isStateful) throws IOException {
          return getKvStoreManager(getKvStoreType(conf), conf, storeName, storePath, isStateful);
      }
  
      public static <T> IKvStoreManager<T> getKvStoreManager(KvStoreType type, Map conf, String storeName, String storePath, boolean isStateful) throws IOException {
          Serializer serializer = SerializerFactory.createSerailzer(conf);
          int ttlTimeSec = ConfigExtension.getStateTtlTime(conf);
          IKvStoreManager<T> kvStoreManager = null;
          switch(type) {
              case memory:
                  kvStoreManager = InMemoryKvStoreManagerFactory.getManager(storeName);
                  break;
              case rocksdb:
                  if (isStateful) {
                      kvStoreManager = ttlTimeSec > 0 ?
                              RocksDbKvStoreManagerFactory.getStatefulManager(conf, storeName, storePath, serializer, ttlTimeSec) :
                              RocksDbKvStoreManagerFactory.getStatefulManager(conf, storeName, storePath, serializer);
                  } else {
                      kvStoreManager = ttlTimeSec > 0 ?
                              RocksDbKvStoreManagerFactory.getManager(conf, storeName, storePath, serializer, ttlTimeSec) :
                              RocksDbKvStoreManagerFactory.getManager(conf, storeName, storePath, serializer);
                  }
                  break;
              default:
                  LOG.error("Unknown kv store type: {}", type.toString());
                  throw new UnsupportedOperationException();
          }
          return kvStoreManager;
      }
  
      public static <T> IKvStoreManager<T> getKvStoreManagerWithMonitor(TopologyContext context, String storeName, String storePath, boolean isStateful) throws IOException {
          Map conf = context.getStormConf();
          return getKvStoreManagerWithMonitor(getKvStoreType(conf), context, storeName, storePath, isStateful);
      }
  
      public static <T> IKvStoreManager<T> getKvStoreManagerWithMonitor(
              KvStoreType type, TopologyContext context, String storeName, String storePath, boolean isStateful) throws IOException {
          IKvStoreManager<T> kvStoreManager = getKvStoreManager(type, context.getStormConf(), storeName, storePath, isStateful);
          kvStoreManager.initMonitor(context);
          return kvStoreManager;
      }
  }