| /* |
| * 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.iotdb.confignode.procedure.impl.pipe.runtime; |
| |
| import org.apache.iotdb.common.rpc.thrift.TConsensusGroupId; |
| import org.apache.iotdb.common.rpc.thrift.TConsensusGroupType; |
| import org.apache.iotdb.common.rpc.thrift.TSStatus; |
| import org.apache.iotdb.confignode.consensus.request.write.pipe.runtime.PipeHandleLeaderChangePlan; |
| import org.apache.iotdb.confignode.procedure.env.ConfigNodeProcedureEnv; |
| import org.apache.iotdb.confignode.procedure.impl.pipe.AbstractOperatePipeProcedureV2; |
| import org.apache.iotdb.confignode.procedure.impl.pipe.PipeTaskOperation; |
| import org.apache.iotdb.confignode.procedure.store.ProcedureType; |
| import org.apache.iotdb.consensus.exception.ConsensusException; |
| import org.apache.iotdb.pipe.api.exception.PipeException; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| import org.apache.iotdb.tsfile.utils.Pair; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| public class PipeHandleLeaderChangeProcedure extends AbstractOperatePipeProcedureV2 { |
| |
| private static final Logger LOGGER = |
| LoggerFactory.getLogger(PipeHandleLeaderChangeProcedure.class); |
| |
| private Map<TConsensusGroupId, Pair<Integer, Integer>> regionGroupToOldAndNewLeaderPairMap = |
| new HashMap<>(); |
| |
| public PipeHandleLeaderChangeProcedure() { |
| super(); |
| } |
| |
| public PipeHandleLeaderChangeProcedure( |
| Map<TConsensusGroupId, Pair<Integer, Integer>> regionGroupToOldAndNewLeaderPairMap) { |
| super(); |
| this.regionGroupToOldAndNewLeaderPairMap = regionGroupToOldAndNewLeaderPairMap; |
| } |
| |
| @Override |
| protected PipeTaskOperation getOperation() { |
| return PipeTaskOperation.HANDLE_LEADER_CHANGE; |
| } |
| |
| @Override |
| public boolean executeFromValidateTask(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: executeFromValidateTask"); |
| |
| // Nothing needs to be checked |
| return false; |
| } |
| |
| @Override |
| public void executeFromCalculateInfoForTask(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: executeFromCalculateInfoForTask"); |
| |
| // Nothing needs to be calculated |
| } |
| |
| @Override |
| public void executeFromWriteConfigNodeConsensus(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: executeFromHandleOnConfigNodes"); |
| |
| final Map<TConsensusGroupId, Integer> newConsensusGroupIdToLeaderConsensusIdMap = |
| new HashMap<>(); |
| regionGroupToOldAndNewLeaderPairMap.forEach( |
| (regionGroupId, oldNewLeaderPair) -> |
| newConsensusGroupIdToLeaderConsensusIdMap.put( |
| regionGroupId, oldNewLeaderPair.getRight())); |
| |
| final PipeHandleLeaderChangePlan pipeHandleLeaderChangePlan = |
| new PipeHandleLeaderChangePlan(newConsensusGroupIdToLeaderConsensusIdMap); |
| TSStatus response; |
| try { |
| response = env.getConfigManager().getConsensusManager().write(pipeHandleLeaderChangePlan); |
| } catch (ConsensusException e) { |
| LOGGER.warn("Failed in the write API executing the consensus layer due to: ", e); |
| response = new TSStatus(TSStatusCode.EXECUTE_STATEMENT_ERROR.getStatusCode()); |
| response.setMessage(e.getMessage()); |
| } |
| if (response.getCode() != TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| throw new PipeException(response.getMessage()); |
| } |
| } |
| |
| @Override |
| public void executeFromOperateOnDataNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: executeFromHandleOnDataNodes"); |
| |
| pushPipeMetaToDataNodesIgnoreException(env); |
| } |
| |
| @Override |
| public void rollbackFromValidateTask(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: rollbackFromValidateTask"); |
| |
| // Nothing to do |
| } |
| |
| @Override |
| public void rollbackFromCalculateInfoForTask(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: rollbackFromCalculateInfoForTask"); |
| |
| // Nothing to do |
| } |
| |
| @Override |
| public void rollbackFromWriteConfigNodeConsensus(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: rollbackFromHandleOnConfigNodes"); |
| |
| // Nothing to do |
| } |
| |
| @Override |
| public void rollbackFromOperateOnDataNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("PipeHandleLeaderChangeProcedure: rollbackFromCreateOnDataNodes"); |
| |
| // Nothing to do |
| } |
| |
| @Override |
| public void serialize(DataOutputStream stream) throws IOException { |
| stream.writeShort(ProcedureType.PIPE_HANDLE_LEADER_CHANGE_PROCEDURE.getTypeCode()); |
| super.serialize(stream); |
| ReadWriteIOUtils.write(regionGroupToOldAndNewLeaderPairMap.size(), stream); |
| for (Map.Entry<TConsensusGroupId, Pair<Integer, Integer>> entry : |
| regionGroupToOldAndNewLeaderPairMap.entrySet()) { |
| ReadWriteIOUtils.write(entry.getKey().getId(), stream); |
| ReadWriteIOUtils.write(entry.getValue().getLeft(), stream); |
| ReadWriteIOUtils.write(entry.getValue().getRight(), stream); |
| } |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) { |
| super.deserialize(byteBuffer); |
| final int size = ReadWriteIOUtils.readInt(byteBuffer); |
| for (int i = 0; i < size; ++i) { |
| final int dataRegionGroupId = ReadWriteIOUtils.readInt(byteBuffer); |
| final int oldDataRegionLeaderId = ReadWriteIOUtils.readInt(byteBuffer); |
| final int newDataRegionLeaderId = ReadWriteIOUtils.readInt(byteBuffer); |
| regionGroupToOldAndNewLeaderPairMap.put( |
| new TConsensusGroupId(TConsensusGroupType.DataRegion, dataRegionGroupId), |
| new Pair<>(oldDataRegionLeaderId, newDataRegionLeaderId)); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| PipeHandleLeaderChangeProcedure that = (PipeHandleLeaderChangeProcedure) o; |
| return getProcId() == that.getProcId() |
| && getCurrentState().equals(that.getCurrentState()) |
| && getCycles() == that.getCycles() |
| && this.regionGroupToOldAndNewLeaderPairMap.equals( |
| that.regionGroupToOldAndNewLeaderPairMap); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash( |
| getProcId(), getCurrentState(), getCycles(), regionGroupToOldAndNewLeaderPairMap); |
| } |
| } |