| /* |
| * 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.db.consensus.statemachine; |
| |
| import org.apache.iotdb.common.rpc.thrift.TSStatus; |
| import org.apache.iotdb.commons.conf.CommonDescriptor; |
| import org.apache.iotdb.consensus.common.DataSet; |
| import org.apache.iotdb.consensus.common.request.IConsensusRequest; |
| import org.apache.iotdb.db.metadata.schemaregion.ISchemaRegion; |
| import org.apache.iotdb.db.metadata.visitor.SchemaExecutionVisitor; |
| import org.apache.iotdb.db.mpp.execution.fragment.FragmentInstanceManager; |
| import org.apache.iotdb.db.mpp.plan.planner.plan.FragmentInstance; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| |
| public class SchemaRegionStateMachine extends BaseStateMachine { |
| |
| private static final Logger logger = LoggerFactory.getLogger(SchemaRegionStateMachine.class); |
| |
| private final ISchemaRegion schemaRegion; |
| private static final FragmentInstanceManager QUERY_INSTANCE_MANAGER = |
| FragmentInstanceManager.getInstance(); |
| |
| public SchemaRegionStateMachine(ISchemaRegion schemaRegion) { |
| this.schemaRegion = schemaRegion; |
| } |
| |
| @Override |
| public void start() {} |
| |
| @Override |
| public void stop() {} |
| |
| @Override |
| public boolean isReadOnly() { |
| return CommonDescriptor.getInstance().getConfig().isReadOnly(); |
| } |
| |
| @Override |
| public boolean takeSnapshot(File snapshotDir) { |
| return schemaRegion.createSnapshot(snapshotDir); |
| } |
| |
| @Override |
| public void loadSnapshot(File latestSnapshotRootDir) { |
| schemaRegion.loadSnapshot(latestSnapshotRootDir); |
| } |
| |
| @Override |
| public TSStatus write(IConsensusRequest request) { |
| logger.info("Execute write plan in SchemaRegionStateMachine"); |
| try { |
| return getPlanNode(request).accept(new SchemaExecutionVisitor(), schemaRegion); |
| } catch (IllegalArgumentException e) { |
| logger.error(e.getMessage(), e); |
| return new TSStatus(TSStatusCode.INTERNAL_SERVER_ERROR.getStatusCode()); |
| } |
| } |
| |
| @Override |
| public DataSet read(IConsensusRequest request) { |
| FragmentInstance fragmentInstance; |
| try { |
| fragmentInstance = getFragmentInstance(request); |
| } catch (IllegalArgumentException e) { |
| logger.error(e.getMessage()); |
| return null; |
| } |
| logger.info( |
| "SchemaRegionStateMachine[{}]: Execute read plan: FragmentInstance-{}", |
| schemaRegion.getSchemaRegionId(), |
| fragmentInstance.getId()); |
| return QUERY_INSTANCE_MANAGER.execSchemaQueryFragmentInstance(fragmentInstance, schemaRegion); |
| } |
| |
| @Override |
| public boolean shouldRetry(TSStatus writeResult) { |
| // TODO implement this |
| return super.shouldRetry(writeResult); |
| } |
| |
| @Override |
| public TSStatus updateResult(TSStatus previousResult, TSStatus retryResult) { |
| // TODO implement this |
| return super.updateResult(previousResult, retryResult); |
| } |
| |
| @Override |
| public long getSleepTime() { |
| // TODO implement this |
| return super.getSleepTime(); |
| } |
| } |