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.distributedlog.zk;
  
  import javax.annotation.Nullable;
  import org.apache.bookkeeper.versioning.LongVersion;
  import org.apache.bookkeeper.versioning.Version;
  import org.apache.distributedlog.util.Transaction.OpListener;
  import org.apache.zookeeper.KeeperException;
  import org.apache.zookeeper.Op;
  import org.apache.zookeeper.OpResult;
  
  
  /**
   * ZooKeeper Operation that plays with {@link org.apache.bookkeeper.versioning.Version}.
   */
  public class ZKVersionedSetOp extends ZKOp {
  
      private final OpListener<Version> listener;
  
      public ZKVersionedSetOp(Op op,
                              @Nullable OpListener<Version> opListener) {
          super(op);
          this.listener = opListener;
      }
  
      @Override
      protected void commitOpResult(OpResult opResult) {
          assert(opResult instanceof OpResult.SetDataResult);
          OpResult.SetDataResult setDataResult = (OpResult.SetDataResult) opResult;
          if (null != listener) {
              listener.onCommit(new LongVersion(setDataResult.getStat().getVersion()));
          }
      }
  
      @Override
      protected void abortOpResult(Throwable t,
                                   @Nullable OpResult opResult) {
          Throwable cause;
          if (null == opResult) {
              cause = t;
          } else {
              if (!(opResult instanceof OpResult.ErrorResult)) {
                  throw new IllegalStateException("Invalid op result : " + opResult);
              }
              OpResult.ErrorResult errorResult = (OpResult.ErrorResult) opResult;
              if (KeeperException.Code.OK.intValue() == errorResult.getErr()) {
                  cause = t;
              } else {
                  cause = KeeperException.create(KeeperException.Code.get(errorResult.getErr()));
              }
          }
          if (null != listener) {
              listener.onAbort(cause);
          }
      }
  
  }
  