| /** |
| * 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.hadoop.hdfs.server.common; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hdfs.server.common.UpgradeObjectCollection.UOSignature; |
| |
| /** |
| * Abstract upgrade object. |
| * |
| * Contains default implementation of common methods of {@link Upgradeable} |
| * interface. |
| */ |
| public abstract class UpgradeObject implements Upgradeable { |
| protected short status; |
| |
| public short getUpgradeStatus() { |
| return status; |
| } |
| |
| public String getDescription() { |
| return "Upgrade object for " + getType() + " layout version " + getVersion(); |
| } |
| |
| public UpgradeStatusReport getUpgradeStatusReport(boolean details) |
| throws IOException { |
| return new UpgradeStatusReport(getVersion(), getUpgradeStatus(), false); |
| } |
| |
| public int compareTo(Upgradeable o) { |
| if(this.getVersion() != o.getVersion()) |
| return (getVersion() > o.getVersion() ? -1 : 1); |
| int res = this.getType().toString().compareTo(o.getType().toString()); |
| if(res != 0) |
| return res; |
| return getClass().getCanonicalName().compareTo( |
| o.getClass().getCanonicalName()); |
| } |
| |
| public boolean equals(Object o) { |
| if (!(o instanceof UpgradeObject)) { |
| return false; |
| } |
| return this.compareTo((UpgradeObject)o) == 0; |
| } |
| |
| public int hashCode() { |
| return new UOSignature(this).hashCode(); |
| } |
| } |