| /** |
| * 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; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB; |
| import org.apache.hadoop.hdfs.server.namenode.NameNode; |
| import org.mockito.Mockito; |
| |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * 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 bpid Block pool Id |
| * @param blkId id of the replica's block |
| * @return copy of ReplicaInfo object @link{FSDataset#fetchReplicaInfo} |
| */ |
| public static ReplicaInfo fetchReplicaInfo (final DataNode dn, |
| final String bpid, |
| final long blkId) { |
| return ((FSDataset)dn.data).fetchReplicaInfo(bpid, blkId); |
| } |
| |
| public static void setHeartbeatsDisabledForTests(DataNode dn, |
| boolean heartbeatsDisabledForTests) { |
| dn.setHeartbeatsDisabledForTests(heartbeatsDisabledForTests); |
| } |
| |
| /** |
| * Insert a Mockito spy object between the given DataNode and |
| * the given NameNode. This can be used to delay or wait for |
| * RPC calls on the datanode->NN path. |
| */ |
| public static DatanodeProtocolClientSideTranslatorPB spyOnBposToNN( |
| DataNode dn, NameNode nn) { |
| String bpid = nn.getNamesystem().getBlockPoolId(); |
| |
| BPOfferService bpos = null; |
| for (BPOfferService thisBpos : dn.getAllBpOs()) { |
| if (thisBpos.getBlockPoolId().equals(bpid)) { |
| bpos = thisBpos; |
| break; |
| } |
| } |
| Preconditions.checkArgument(bpos != null, |
| "No such bpid: %s", bpid); |
| |
| DatanodeProtocolClientSideTranslatorPB origNN = bpos.getBpNamenode(); |
| DatanodeProtocolClientSideTranslatorPB spy = Mockito.spy(origNN); |
| |
| bpos.setBpNamenode(spy); |
| return spy; |
| } |
| } |