| /* |
| * 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; |
| |
| import org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet; |
| import org.apache.iotdb.common.rpc.thrift.TSStatus; |
| import org.apache.iotdb.commons.exception.runtime.ThriftSerDeException; |
| import org.apache.iotdb.commons.utils.ThriftConfigNodeSerDeUtils; |
| import org.apache.iotdb.confignode.consensus.request.write.region.OfferRegionMaintainTasksPlan; |
| import org.apache.iotdb.confignode.consensus.request.write.storagegroup.PreDeleteStorageGroupPlan; |
| import org.apache.iotdb.confignode.persistence.partition.RegionDeleteTask; |
| import org.apache.iotdb.confignode.procedure.StateMachineProcedure; |
| import org.apache.iotdb.confignode.procedure.env.ConfigNodeProcedureEnv; |
| import org.apache.iotdb.confignode.procedure.exception.ProcedureException; |
| import org.apache.iotdb.confignode.procedure.exception.ProcedureSuspendedException; |
| import org.apache.iotdb.confignode.procedure.exception.ProcedureYieldException; |
| import org.apache.iotdb.confignode.procedure.state.DeleteStorageGroupState; |
| import org.apache.iotdb.confignode.procedure.store.ProcedureFactory; |
| import org.apache.iotdb.confignode.rpc.thrift.TStorageGroupSchema; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| |
| import org.apache.thrift.TException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| |
| public class DeleteStorageGroupProcedure |
| extends StateMachineProcedure<ConfigNodeProcedureEnv, DeleteStorageGroupState> { |
| private static final Logger LOG = LoggerFactory.getLogger(DeleteStorageGroupProcedure.class); |
| private static final int RETRY_THRESHOLD = 5; |
| |
| private TStorageGroupSchema deleteSgSchema; |
| |
| public DeleteStorageGroupProcedure() { |
| super(); |
| } |
| |
| public DeleteStorageGroupProcedure(TStorageGroupSchema deleteSgSchema) { |
| super(); |
| this.deleteSgSchema = deleteSgSchema; |
| } |
| |
| public TStorageGroupSchema getDeleteSgSchema() { |
| return deleteSgSchema; |
| } |
| |
| public void setDeleteSgSchema(TStorageGroupSchema deleteSgSchema) { |
| this.deleteSgSchema = deleteSgSchema; |
| } |
| |
| @Override |
| protected Flow executeFromState(ConfigNodeProcedureEnv env, DeleteStorageGroupState state) |
| throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException { |
| if (deleteSgSchema == null) { |
| return Flow.NO_MORE_STATE; |
| } |
| try { |
| switch (state) { |
| case DELETE_STORAGE_GROUP_PREPARE: |
| // TODO: lock related ClusterSchemaInfo, PartitionInfo and Regions |
| setNextState(DeleteStorageGroupState.DELETE_PRE); |
| break; |
| case DELETE_PRE: |
| LOG.info("Pre delete for Storage group {}", deleteSgSchema.getName()); |
| env.preDelete(PreDeleteStorageGroupPlan.PreDeleteType.EXECUTE, deleteSgSchema.getName()); |
| setNextState(DeleteStorageGroupState.INVALIDATE_CACHE); |
| break; |
| case INVALIDATE_CACHE: |
| LOG.info("Invalidate cache of {}", deleteSgSchema.getName()); |
| if (env.invalidateCache(deleteSgSchema.getName())) { |
| setNextState(DeleteStorageGroupState.DELETE_CONFIG); |
| } else { |
| setFailure(new ProcedureException("Invalidate cache failed")); |
| } |
| break; |
| case DELETE_CONFIG: |
| LOG.info("Delete config info of {}", deleteSgSchema.getName()); |
| |
| // Submit RegionDeleteTasks |
| OfferRegionMaintainTasksPlan offerPlan = new OfferRegionMaintainTasksPlan(); |
| List<TRegionReplicaSet> regionReplicaSets = |
| env.getAllReplicaSets(deleteSgSchema.getName()); |
| regionReplicaSets.forEach( |
| regionReplicaSet -> { |
| regionReplicaSet |
| .getDataNodeLocations() |
| .forEach( |
| targetDataNode -> |
| offerPlan.appendRegionMaintainTask( |
| new RegionDeleteTask( |
| targetDataNode, regionReplicaSet.getRegionId()))); |
| |
| // Clear heartbeat cache along the way |
| env.getConfigManager() |
| .getPartitionManager() |
| .removeRegionGroupCache(regionReplicaSet.getRegionId()); |
| }); |
| env.getConfigManager().getConsensusManager().write(offerPlan); |
| |
| // Delete StorageGroupPartitionTable |
| TSStatus status = env.deleteConfig(deleteSgSchema.getName()); |
| |
| if (status.getCode() == TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| return Flow.NO_MORE_STATE; |
| } else if (getCycles() > RETRY_THRESHOLD) { |
| setFailure(new ProcedureException("Delete config info id failed")); |
| } |
| } |
| } catch (TException | IOException e) { |
| if (isRollbackSupported(state)) { |
| setFailure(new ProcedureException("Delete storage group failed " + state)); |
| } else { |
| LOG.error( |
| "Retriable error trying to delete storage group {}, state {}", |
| deleteSgSchema.getName(), |
| state, |
| e); |
| if (getCycles() > RETRY_THRESHOLD) { |
| setFailure(new ProcedureException("State stuck at " + state)); |
| } |
| } |
| } |
| return Flow.HAS_MORE_STATE; |
| } |
| |
| @Override |
| protected void rollbackState(ConfigNodeProcedureEnv env, DeleteStorageGroupState state) |
| throws IOException, InterruptedException { |
| switch (state) { |
| case DELETE_PRE: |
| case INVALIDATE_CACHE: |
| LOG.info("Rollback preDeleted:{}", deleteSgSchema.getName()); |
| env.preDelete(PreDeleteStorageGroupPlan.PreDeleteType.ROLLBACK, deleteSgSchema.getName()); |
| break; |
| } |
| } |
| |
| @Override |
| protected boolean isRollbackSupported(DeleteStorageGroupState state) { |
| switch (state) { |
| case DELETE_PRE: |
| case INVALIDATE_CACHE: |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| protected DeleteStorageGroupState getState(int stateId) { |
| return DeleteStorageGroupState.values()[stateId]; |
| } |
| |
| @Override |
| protected int getStateId(DeleteStorageGroupState deleteStorageGroupState) { |
| return deleteStorageGroupState.ordinal(); |
| } |
| |
| @Override |
| protected DeleteStorageGroupState getInitialState() { |
| return DeleteStorageGroupState.DELETE_STORAGE_GROUP_PREPARE; |
| } |
| |
| @Override |
| public void serialize(DataOutputStream stream) throws IOException { |
| stream.writeInt(ProcedureFactory.ProcedureType.DELETE_STORAGE_GROUP_PROCEDURE.ordinal()); |
| super.serialize(stream); |
| ThriftConfigNodeSerDeUtils.serializeTStorageGroupSchema(deleteSgSchema, stream); |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) { |
| super.deserialize(byteBuffer); |
| try { |
| deleteSgSchema = ThriftConfigNodeSerDeUtils.deserializeTStorageGroupSchema(byteBuffer); |
| } catch (ThriftSerDeException e) { |
| LOG.error("Error in deserialize DeleteStorageGroupProcedure", e); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that instanceof DeleteStorageGroupProcedure) { |
| DeleteStorageGroupProcedure thatProc = (DeleteStorageGroupProcedure) that; |
| return thatProc.getProcId() == this.getProcId() |
| && thatProc.getState() == this.getState() |
| && thatProc.deleteSgSchema.equals(this.getDeleteSgSchema()); |
| } |
| return false; |
| } |
| } |