001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master.procedure;
019
020import java.io.IOException;
021import java.util.Optional;
022import org.apache.hadoop.hbase.ServerName;
023import org.apache.hadoop.hbase.master.procedure.RSProcedureDispatcher.ServerOperation;
024import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;
025import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;
026import org.apache.hadoop.hbase.regionserver.LogRollCallable;
027import org.apache.yetus.audience.InterfaceAudience;
028
029import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
030import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.LogRollRemoteProcedureStateData;
031
032/**
033 * The remote procedure to perform WAL rolling on the specific RegionServer without retrying.
034 */
035@InterfaceAudience.Private
036public class LogRollRemoteProcedure extends ServerRemoteProcedure
037  implements ServerProcedureInterface {
038
039  public LogRollRemoteProcedure() {
040  }
041
042  public LogRollRemoteProcedure(ServerName targetServer) {
043    this.targetServer = targetServer;
044  }
045
046  @Override
047  protected void rollback(MasterProcedureEnv env) {
048    throw new UnsupportedOperationException();
049  }
050
051  @Override
052  protected boolean abort(MasterProcedureEnv env) {
053    return false;
054  }
055
056  @Override
057  protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {
058    serializer.serialize(LogRollRemoteProcedureStateData.newBuilder()
059      .setTargetServer(ProtobufUtil.toServerName(targetServer)).build());
060  }
061
062  @Override
063  protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {
064    LogRollRemoteProcedureStateData data =
065      serializer.deserialize(LogRollRemoteProcedureStateData.class);
066    this.targetServer = ProtobufUtil.toServerName(data.getTargetServer());
067  }
068
069  @Override
070  public Optional<RemoteOperation> remoteCallBuild(MasterProcedureEnv env, ServerName serverName) {
071    return Optional.of(new ServerOperation(this, getProcId(), LogRollCallable.class,
072      LogRollRemoteProcedureStateData.getDefaultInstance().toByteArray(),
073      env.getMasterServices().getMasterActiveTime()));
074  }
075
076  @Override
077  public ServerName getServerName() {
078    return targetServer;
079  }
080
081  @Override
082  public boolean hasMetaTableRegion() {
083    return false;
084  }
085
086  @Override
087  public ServerOperationType getServerOperationType() {
088    return ServerOperationType.LOG_ROLL;
089  }
090
091  @Override
092  protected boolean complete(MasterProcedureEnv env, Throwable error) {
093    // do not retry. just returns.
094    if (error != null) {
095      LOG.warn("Failed to roll wal for {}", targetServer, error);
096      return false;
097    } else {
098      return true;
099    }
100  }
101
102  @Override
103  public synchronized void remoteOperationCompleted(MasterProcedureEnv env,
104    byte[] remoteResultData) {
105    setResult(remoteResultData);
106    super.remoteOperationCompleted(env, remoteResultData);
107  }
108
109  @Override
110  protected void toStringClassDetails(StringBuilder sb) {
111    sb.append(getClass().getSimpleName()).append(" targetServer=").append(targetServer);
112  }
113}