/**
* 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.namenode;
import java.io.IOException;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager;
import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem.SafeModeInfo;
import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration;
import org.apache.hadoop.ipc.Server;
/**
* This is a utility class to expose NameNode functionality for unit tests.
*/
public class NameNodeAdapter {
/**
* Get the namesystem from the namenode
*/
public static FSNamesystem getNamesystem(NameNode namenode) {
return namenode.getNamesystem();
}
/**
* Get block locations within the specified range.
*/
public static LocatedBlocks getBlockLocations(NameNode namenode,
String src, long offset, long length) throws IOException {
return namenode.getNamesystem().getBlockLocations(
src, offset, length, false, true);
}
/**
* Get the internal RPC server instance.
* @return rpc server
*/
public static Server getRpcServer(NameNode namenode) {
return ((NameNodeRpcServer)namenode.getRpcServer()).server;
}
public static DelegationTokenSecretManager getDtSecretManager(
final FSNamesystem ns) {
return ns.getDelegationTokenSecretManager();
}
public static DatanodeCommand[] sendHeartBeat(DatanodeRegistration nodeReg,
DatanodeDescriptor dd, FSNamesystem namesystem) throws IOException {
return namesystem.handleHeartbeat(nodeReg, dd.getCapacity(),
dd.getDfsUsed(), dd.getRemaining(), dd.getBlockPoolUsed(), 0, 0, 0);
}
public static boolean setReplication(final FSNamesystem ns,
final String src, final short replication) throws IOException {
return ns.setReplication(src, replication);
}
public static LeaseManager getLeaseManager(final FSNamesystem ns) {
return ns.leaseManager;
}
/** Set the softLimit and hardLimit of client lease periods. */
public static void setLeasePeriod(final FSNamesystem namesystem, long soft, long hard) {
getLeaseManager(namesystem).setLeasePeriod(soft, hard);
namesystem.lmthread.interrupt();
}
public static String getLeaseHolderForPath(NameNode namenode, String path) {
return namenode.getNamesystem().leaseManager.getLeaseByPath(path).getHolder();
}
/**
* Return the datanode descriptor for the given datanode.
*/
public static DatanodeDescriptor getDatanode(final FSNamesystem ns,
DatanodeID id) throws IOException {
ns.readLock();
try {
return ns.getBlockManager().getDatanodeManager().getDatanode(id);
} finally {
ns.readUnlock();
}
}
/**
* @return the number of blocks marked safe by safemode, or -1
* if safemode is not running.
*/
public static int getSafeModeSafeBlocks(NameNode nn) {
SafeModeInfo smi = nn.getNamesystem().getSafeModeInfoForTests();
if (smi == null) {
return -1;
}
return smi.blockSafe;
}
/**
* @return true if safemode is not running, or if safemode has already
* initialized the replication queues
*/
public static boolean safeModeInitializedReplQueues(NameNode nn) {
SafeModeInfo smi = nn.getNamesystem().getSafeModeInfoForTests();
if (smi == null) {
return true;
}
return smi.initializedReplQueues;
}
}