| /** |
| * 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 org.apache.distributedlog.util.Transaction; |
| import org.apache.zookeeper.Op; |
| import org.apache.zookeeper.OpResult; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * ZooKeeper Transaction Operation |
| */ |
| public abstract class ZKOp implements Transaction.Op<Object> { |
| |
| protected final Op op; |
| |
| protected ZKOp(Op op) { |
| this.op = op; |
| } |
| |
| public Op getOp() { |
| return op; |
| } |
| |
| @Override |
| public void commit(Object r) { |
| assert(r instanceof OpResult); |
| commitOpResult((OpResult) r); |
| } |
| |
| protected abstract void commitOpResult(OpResult opResult); |
| |
| @Override |
| public void abort(Throwable t, Object r) { |
| assert(r instanceof OpResult); |
| abortOpResult(t, (OpResult) r); |
| } |
| |
| /** |
| * Abort the operation with exception <i>t</i> and result <i>opResult</i>. |
| * |
| * @param t the reason to abort the operation |
| * @param opResult the result of operation |
| */ |
| protected abstract void abortOpResult(Throwable t, |
| @Nullable OpResult opResult); |
| } |