| /* |
| * 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.consensus.IStateMachine; |
| import org.apache.iotdb.consensus.common.request.ByteBufferConsensusRequest; |
| import org.apache.iotdb.consensus.common.request.IConsensusRequest; |
| import org.apache.iotdb.consensus.common.request.MultiLeaderConsensusRequest; |
| import org.apache.iotdb.db.mpp.plan.planner.plan.FragmentInstance; |
| import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNode; |
| import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNodeType; |
| import org.apache.iotdb.db.wal.buffer.WALEntry; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public abstract class BaseStateMachine |
| implements IStateMachine, IStateMachine.EventApi, IStateMachine.RetryPolicy { |
| |
| private static final Logger logger = LoggerFactory.getLogger(BaseStateMachine.class); |
| |
| protected FragmentInstance getFragmentInstance(IConsensusRequest request) { |
| FragmentInstance instance; |
| if (request instanceof ByteBufferConsensusRequest) { |
| instance = FragmentInstance.deserializeFrom(request.serializeToByteBuffer()); |
| } else if (request instanceof FragmentInstance) { |
| instance = (FragmentInstance) request; |
| } else { |
| logger.error("Unexpected IConsensusRequest : {}", request); |
| throw new IllegalArgumentException("Unexpected IConsensusRequest!"); |
| } |
| return instance; |
| } |
| |
| protected PlanNode getPlanNode(IConsensusRequest request) { |
| PlanNode node; |
| if (request instanceof ByteBufferConsensusRequest) { |
| node = PlanNodeType.deserialize(request.serializeToByteBuffer()); |
| } else if (request instanceof MultiLeaderConsensusRequest) { |
| node = WALEntry.deserializeForConsensus(request.serializeToByteBuffer()); |
| } else if (request instanceof PlanNode) { |
| node = (PlanNode) request; |
| } else { |
| logger.error("Unexpected IConsensusRequest : {}", request); |
| throw new IllegalArgumentException("Unexpected IConsensusRequest!"); |
| } |
| return node; |
| } |
| } |