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/**
* 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.protocolPB;
import java.io.Closeable;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.List;
import javax.net.SocketFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.ReconfigurationTaskStatus;
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
import org.apache.hadoop.hdfs.client.BlockReportOptions;
import org.apache.hadoop.hdfs.protocol.BlockLocalPathInfo;
import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.protocol.DatanodeLocalInfo;
import org.apache.hadoop.hdfs.protocol.DatanodeVolumeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DeleteBlockPoolRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.EvictWritersRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBalancerBandwidthRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBalancerBandwidthResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetBlockLocalPathInfoResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetDatanodeInfoRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetDatanodeInfoResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetVolumeReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetVolumeReportResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.DatanodeVolumeInfoProto;
import org.apache.hadoop.hdfs.protocol.proto.ReconfigurationProtocolProtos.ListReconfigurablePropertiesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ReconfigurationProtocolProtos.ListReconfigurablePropertiesResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ReconfigurationProtocolProtos.GetReconfigurationStatusRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ShutdownDatanodeRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ReconfigurationProtocolProtos.StartReconfigurationRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.TriggerBlockReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.SubmitDiskBalancerPlanRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.CancelPlanRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.QueryPlanStatusRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.QueryPlanStatusResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DiskBalancerSettingRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.DiskBalancerSettingResponseProto;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
import org.apache.hadoop.hdfs.server.datanode.DiskBalancerWorkStatus;
import org.apache.hadoop.hdfs.server.datanode.DiskBalancerWorkStatus.Result;
import org.apache.hadoop.ipc.ProtobufRpcEngine2;
import org.apache.hadoop.ipc.ProtocolMetaInterface;
import org.apache.hadoop.ipc.ProtocolTranslator;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ipc.RpcClientUtil;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.thirdparty.protobuf.RpcController;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.hadoop.ipc.internal.ShadedProtobufHelper.ipc;
/**
* This class is the client side translator to translate the requests made on
* {@link ClientDatanodeProtocol} interfaces to the RPC server implementing
* {@link ClientDatanodeProtocolPB}.
*/
@InterfaceAudience.Private
@InterfaceStability.Stable
public class ClientDatanodeProtocolTranslatorPB implements
ProtocolMetaInterface, ClientDatanodeProtocol,
ProtocolTranslator, Closeable {
public static final Logger LOG = LoggerFactory
.getLogger(ClientDatanodeProtocolTranslatorPB.class);
/** RpcController is not used and hence is set to null */
private final static RpcController NULL_CONTROLLER = null;
private final ClientDatanodeProtocolPB rpcProxy;
private final static RefreshNamenodesRequestProto VOID_REFRESH_NAMENODES =
RefreshNamenodesRequestProto.newBuilder().build();
private final static GetDatanodeInfoRequestProto VOID_GET_DATANODE_INFO =
GetDatanodeInfoRequestProto.newBuilder().build();
private final static GetVolumeReportRequestProto
VOID_GET_DATANODE_STORAGE_INFO =
GetVolumeReportRequestProto.newBuilder().build();
private final static GetReconfigurationStatusRequestProto VOID_GET_RECONFIG_STATUS =
GetReconfigurationStatusRequestProto.newBuilder().build();
private final static StartReconfigurationRequestProto VOID_START_RECONFIG =
StartReconfigurationRequestProto.newBuilder().build();
private static final ListReconfigurablePropertiesRequestProto
VOID_LIST_RECONFIGURABLE_PROPERTIES =
ListReconfigurablePropertiesRequestProto.newBuilder().build();
private static final GetBalancerBandwidthRequestProto
VOID_GET_BALANCER_BANDWIDTH =
GetBalancerBandwidthRequestProto.newBuilder().build();
private final static EvictWritersRequestProto VOID_EVICT_WRITERS =
EvictWritersRequestProto.newBuilder().build();
public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid,
Configuration conf, int socketTimeout, boolean connectToDnViaHostname,
LocatedBlock locatedBlock) throws IOException {
rpcProxy = createClientDatanodeProtocolProxy( datanodeid, conf,
socketTimeout, connectToDnViaHostname, locatedBlock);
}
public ClientDatanodeProtocolTranslatorPB(InetSocketAddress addr,
UserGroupInformation ticket, Configuration conf, SocketFactory factory)
throws IOException {
rpcProxy = createClientDatanodeProtocolProxy(addr, ticket, conf, factory, 0);
}
/**
* Constructor.
* @param datanodeid Datanode to connect to.
* @param conf Configuration.
* @param socketTimeout Socket timeout to use.
* @param connectToDnViaHostname connect to the Datanode using its hostname
* @throws IOException
*/
public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid,
Configuration conf, int socketTimeout, boolean connectToDnViaHostname)
throws IOException {
final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
LOG.debug("Connecting to datanode {} addr={}", dnAddr, addr);
rpcProxy = createClientDatanodeProtocolProxy(addr,
UserGroupInformation.getCurrentUser(), conf,
NetUtils.getDefaultSocketFactory(conf), socketTimeout);
}
static ClientDatanodeProtocolPB createClientDatanodeProtocolProxy(
DatanodeID datanodeid, Configuration conf, int socketTimeout,
boolean connectToDnViaHostname, LocatedBlock locatedBlock)
throws IOException {
final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
LOG.debug("Connecting to datanode {} addr={}", dnAddr, addr);
// Since we're creating a new UserGroupInformation here, we know that no
// future RPC proxies will be able to re-use the same connection. And
// usages of this proxy tend to be one-off calls.
//
// This is a temporary fix: callers should really achieve this by using
// RPC.stopProxy() on the resulting object, but this is currently not
// working in trunk. See the discussion on HDFS-1965.
Configuration confWithNoIpcIdle = new Configuration(conf);
confWithNoIpcIdle.setInt(CommonConfigurationKeysPublic
.IPC_CLIENT_CONNECTION_MAXIDLETIME_KEY, 0);
UserGroupInformation ticket = UserGroupInformation
.createRemoteUser(locatedBlock.getBlock().getLocalBlock().toString());
ticket.addToken(locatedBlock.getBlockToken());
return createClientDatanodeProtocolProxy(addr, ticket, confWithNoIpcIdle,
NetUtils.getDefaultSocketFactory(conf), socketTimeout);
}
static ClientDatanodeProtocolPB createClientDatanodeProtocolProxy(
InetSocketAddress addr, UserGroupInformation ticket, Configuration conf,
SocketFactory factory, int socketTimeout) throws IOException {
RPC.setProtocolEngine(conf, ClientDatanodeProtocolPB.class,
ProtobufRpcEngine2.class);
return RPC.getProxy(ClientDatanodeProtocolPB.class,
RPC.getProtocolVersion(ClientDatanodeProtocolPB.class), addr, ticket,
conf, factory, socketTimeout);
}
@Override
public void close() {
RPC.stopProxy(rpcProxy);
}
@Override
public long getReplicaVisibleLength(ExtendedBlock b) throws IOException {
GetReplicaVisibleLengthRequestProto req =
GetReplicaVisibleLengthRequestProto.newBuilder()
.setBlock(PBHelperClient.convert(b)).build();
return ipc(() -> rpcProxy.getReplicaVisibleLength(NULL_CONTROLLER, req).getLength());
}
@Override
public void refreshNamenodes() throws IOException {
ipc(() -> rpcProxy.refreshNamenodes(NULL_CONTROLLER, VOID_REFRESH_NAMENODES));
}
@Override
public void deleteBlockPool(String bpid, boolean force) throws IOException {
DeleteBlockPoolRequestProto req = DeleteBlockPoolRequestProto.newBuilder()
.setBlockPool(bpid).setForce(force).build();
ipc(() -> rpcProxy.deleteBlockPool(NULL_CONTROLLER, req));
}
@Override
public BlockLocalPathInfo getBlockLocalPathInfo(ExtendedBlock block,
Token token) throws IOException {
GetBlockLocalPathInfoRequestProto req =
GetBlockLocalPathInfoRequestProto.newBuilder()
.setBlock(PBHelperClient.convert(block))
.setToken(PBHelperClient.convert(token)).build();
GetBlockLocalPathInfoResponseProto resp;
resp = ipc(() -> rpcProxy.getBlockLocalPathInfo(NULL_CONTROLLER, req));
return new BlockLocalPathInfo(PBHelperClient.convert(resp.getBlock()),
resp.getLocalPath(), resp.getLocalMetaPath());
}
@Override
public boolean isMethodSupported(String methodName) throws IOException {
return RpcClientUtil.isMethodSupported(rpcProxy,
ClientDatanodeProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER,
RPC.getProtocolVersion(ClientDatanodeProtocolPB.class), methodName);
}
@Override
public Object getUnderlyingProxyObject() {
return rpcProxy;
}
@Override
public void shutdownDatanode(boolean forUpgrade) throws IOException {
ShutdownDatanodeRequestProto request = ShutdownDatanodeRequestProto
.newBuilder().setForUpgrade(forUpgrade).build();
ipc(() -> rpcProxy.shutdownDatanode(NULL_CONTROLLER, request));
}
@Override
public void evictWriters() throws IOException {
ipc(() -> rpcProxy.evictWriters(NULL_CONTROLLER, VOID_EVICT_WRITERS));
}
@Override
public DatanodeLocalInfo getDatanodeInfo() throws IOException {
GetDatanodeInfoResponseProto response;
response = ipc(() -> rpcProxy.getDatanodeInfo(NULL_CONTROLLER,
VOID_GET_DATANODE_INFO));
return PBHelperClient.convert(response.getLocalInfo());
}
@Override
public void startReconfiguration() throws IOException {
ipc(() -> rpcProxy.startReconfiguration(NULL_CONTROLLER, VOID_START_RECONFIG));
}
@Override
public ReconfigurationTaskStatus getReconfigurationStatus()
throws IOException {
return ReconfigurationProtocolUtils.getReconfigurationStatus(
ipc(() -> rpcProxy.getReconfigurationStatus(
NULL_CONTROLLER,
VOID_GET_RECONFIG_STATUS)));
}
@Override
public List listReconfigurableProperties() throws IOException {
ListReconfigurablePropertiesResponseProto response;
response = ipc(() -> rpcProxy.listReconfigurableProperties(NULL_CONTROLLER,
VOID_LIST_RECONFIGURABLE_PROPERTIES));
return response.getNameList();
}
@Override
public void triggerBlockReport(BlockReportOptions options)
throws IOException {
TriggerBlockReportRequestProto.Builder builder = TriggerBlockReportRequestProto.newBuilder().
setIncremental(options.isIncremental());
if (options.getNamenodeAddr() != null) {
builder.setNnAddress(NetUtils.getHostPortString(options.getNamenodeAddr()));
}
ipc(() -> rpcProxy.triggerBlockReport(NULL_CONTROLLER, builder.build()));
}
@Override
public long getBalancerBandwidth() throws IOException {
GetBalancerBandwidthResponseProto response;
response = ipc(() -> rpcProxy.getBalancerBandwidth(NULL_CONTROLLER,
VOID_GET_BALANCER_BANDWIDTH));
return response.getBandwidth();
}
/**
* Submits a disk balancer plan to the datanode.
* @param planID - Plan ID is the hash512 string of the plan that is
* submitted. This is used by clients when they want to find
* local copies of these plans.
* @param planVersion - The data format of the plans - for future , not
* used now.
* @param planFile - Plan file name
* @param planData - Actual plan data in json format
* @param skipDateCheck - Skips the date check.
* @throws IOException
*/
@Override
public void submitDiskBalancerPlan(String planID, long planVersion,
String planFile, String planData, boolean skipDateCheck)
throws IOException {
SubmitDiskBalancerPlanRequestProto request =
SubmitDiskBalancerPlanRequestProto.newBuilder()
.setPlanID(planID)
.setPlanVersion(planVersion)
.setPlanFile(planFile)
.setPlan(planData)
.setIgnoreDateCheck(skipDateCheck)
.build();
ipc(() -> rpcProxy.submitDiskBalancerPlan(NULL_CONTROLLER, request));
}
/**
* Cancels an executing disk balancer plan.
*
* @param planID - A SHA-1 hash of the plan string.
* @throws IOException on error
*/
@Override
public void cancelDiskBalancePlan(String planID)
throws IOException {
CancelPlanRequestProto request = CancelPlanRequestProto.newBuilder()
.setPlanID(planID).build();
ipc(() -> rpcProxy.cancelDiskBalancerPlan(NULL_CONTROLLER, request));
}
/**
* Gets the status of an executing diskbalancer Plan.
*/
@Override
public DiskBalancerWorkStatus queryDiskBalancerPlan() throws IOException {
QueryPlanStatusRequestProto request =
QueryPlanStatusRequestProto.newBuilder().build();
QueryPlanStatusResponseProto response =
ipc(() -> rpcProxy.queryDiskBalancerPlan(NULL_CONTROLLER, request));
DiskBalancerWorkStatus.Result result = Result.NO_PLAN;
if(response.hasResult()) {
result = DiskBalancerWorkStatus.Result.values()[
response.getResult()];
}
return new DiskBalancerWorkStatus(result,
response.hasPlanID() ? response.getPlanID() : null,
response.hasPlanFile() ? response.getPlanFile() : null,
response.hasCurrentStatus() ? response.getCurrentStatus() : null);
}
@Override
public String getDiskBalancerSetting(String key) throws IOException {
DiskBalancerSettingRequestProto request =
DiskBalancerSettingRequestProto.newBuilder().setKey(key).build();
DiskBalancerSettingResponseProto response =
ipc(() -> rpcProxy.getDiskBalancerSetting(NULL_CONTROLLER, request));
return response.hasValue() ? response.getValue() : null;
}
@Override
public List getVolumeReport() throws IOException {
List volumeInfoList = new ArrayList<>();
GetVolumeReportResponseProto volumeReport = ipc(() -> rpcProxy.getVolumeReport(
NULL_CONTROLLER, VOID_GET_DATANODE_STORAGE_INFO));
List volumeProtoList = volumeReport
.getVolumeInfoList();
for (DatanodeVolumeInfoProto proto : volumeProtoList) {
volumeInfoList.add(new DatanodeVolumeInfo(proto.getPath(), proto
.getUsedSpace(), proto.getFreeSpace(), proto.getReservedSpace(),
proto.getReservedSpaceForReplicas(), proto.getNumBlocks(),
PBHelperClient.convertStorageType(proto.getStorageType())));
}
return volumeInfoList;
}
}
