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.bookkeeper.meta;
  
  import static com.google.common.base.Preconditions.checkArgument;
  
  import java.io.IOException;
  import java.util.List;
  import org.apache.bookkeeper.conf.AbstractConfiguration;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.meta.zk.ZKMetadataDriverBase;
  import org.apache.bookkeeper.replication.ReplicationException;
  import org.apache.bookkeeper.stats.NullStatsLogger;
  import org.apache.bookkeeper.util.ZkUtils;
  import org.apache.zookeeper.data.ACL;
  
  /**
   * Flat Ledger Manager Factory.
   *
   * @deprecated since 4.7.0. The implementation will be still available but not recommended to use.
   */
  @Deprecated
  public class FlatLedgerManagerFactory extends AbstractZkLedgerManagerFactory {
  
      public static final String NAME = "flat";
      public static final int CUR_VERSION = 1;
  
      AbstractConfiguration conf;
  
      @Override
      public int getCurrentVersion() {
          return CUR_VERSION;
      }
  
      @Override
      public LedgerManagerFactory initialize(final AbstractConfiguration conf,
                                             final LayoutManager layoutManager,
                                             final int factoryVersion)
      throws IOException {
          checkArgument(layoutManager == null || layoutManager instanceof ZkLayoutManager);
  
          if (CUR_VERSION != factoryVersion) {
              throw new IOException("Incompatible layout version found : "
                                  + factoryVersion);
          }
          this.conf = conf;
  
          this.zk = layoutManager == null ? null : ((ZkLayoutManager) layoutManager).getZk();
          return this;
      }
  
      @Override
      public void close() throws IOException {
          // since zookeeper instance is passed from outside
          // we don't need to close it here
      }
  
      @Override
      public LedgerIdGenerator newLedgerIdGenerator() {
          List<ACL> zkAcls = ZkUtils.getACLs(conf);
          String ledgersRootPath = ZKMetadataDriverBase.resolveZkLedgersRootPath(conf);
          return new ZkLedgerIdGenerator(zk, ledgersRootPath, null, zkAcls);
      }
  
      @Override
      public LedgerManager newLedgerManager() {
          return new FlatLedgerManager(conf, zk);
      }
  
      @Override
      public LedgerUnderreplicationManager newLedgerUnderreplicationManager()
              throws ReplicationException.UnavailableException, InterruptedException,
              ReplicationException.CompatibilityException {
          return new ZkLedgerUnderreplicationManager(conf, zk);
      }
  
      @Override
      public LedgerAuditorManager newLedgerAuditorManager() {
          ServerConfiguration serverConfiguration = new ServerConfiguration(conf);
          return new ZkLedgerAuditorManager(zk, serverConfiguration, NullStatsLogger.INSTANCE);
      }
  }
  