/**
* 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.datanode;
/**
* WARNING!! This is TEST ONLY class: it never has to be used
* for ANY development purposes.
*
* This is a utility class to expose DataNode functionality for
* unit and functional tests.
*/
public class DataNodeAdapter {
/**
* Fetch a copy of ReplicaInfo from a datanode by block id
* @param dn datanode to retrieve a replicainfo object from
* @param blkId id of the replica's block
* @return copy of ReplicaInfo object @link{FSDataset#fetchReplicaInfo}
*/
public static ReplicaInfo fetchReplicaInfo (final DataNode dn,
final long blkId) {
return ((FSDataset)dn.data).fetchReplicaInfo(blkId);
}
}