hadoop RemoteLocationContext 源码
haddop RemoteLocationContext 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RemoteLocationContext.java
/**
* 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.federation.router;
import org.apache.commons.lang3.builder.HashCodeBuilder;
/**
* Base class for objects that are unique to a namespace.
*/
public abstract class RemoteLocationContext
implements Comparable<RemoteLocationContext> {
/**
* Returns an identifier for a unique namespace.
*
* @return Namespace identifier.
*/
public abstract String getNameserviceId();
/**
* Destination in this location. For example the path in a remote namespace.
*
* @return Destination in this location.
*/
public abstract String getDest();
/**
* Original source location.
*
* @return Source path.
*/
public abstract String getSrc();
@Override
public int hashCode() {
return new HashCodeBuilder(17, 31)
.append(getNameserviceId())
.append(getDest())
.toHashCode();
}
@Override
public boolean equals(Object obj) {
if (obj instanceof RemoteLocationContext) {
RemoteLocationContext other = (RemoteLocationContext) obj;
return this.getNameserviceId().equals(other.getNameserviceId()) &&
this.getDest().equals(other.getDest());
}
return false;
}
@Override
public int compareTo(RemoteLocationContext info) {
int ret = this.getNameserviceId().compareTo(info.getNameserviceId());
if (ret == 0) {
ret = this.getDest().compareTo(info.getDest());
}
return ret;
}
}
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