| /* |
| * 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.trigger; |
| |
| import org.apache.iotdb.commons.trigger.exception.TriggerManagementException; |
| import org.apache.iotdb.confignode.consensus.request.write.pipe.payload.PipeEnrichedPlan; |
| import org.apache.iotdb.confignode.consensus.request.write.trigger.DeleteTriggerInTablePlan; |
| import org.apache.iotdb.confignode.consensus.request.write.trigger.UpdateTriggerStateInTablePlan; |
| import org.apache.iotdb.confignode.persistence.TriggerInfo; |
| import org.apache.iotdb.confignode.procedure.env.ConfigNodeProcedureEnv; |
| import org.apache.iotdb.confignode.procedure.exception.ProcedureException; |
| import org.apache.iotdb.confignode.procedure.impl.node.AbstractNodeProcedure; |
| import org.apache.iotdb.confignode.procedure.state.DropTriggerState; |
| import org.apache.iotdb.confignode.procedure.store.ProcedureType; |
| import org.apache.iotdb.confignode.rpc.thrift.TTriggerState; |
| import org.apache.iotdb.rpc.RpcUtils; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| 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.Objects; |
| |
| public class DropTriggerProcedure extends AbstractNodeProcedure<DropTriggerState> { |
| private static final Logger LOG = LoggerFactory.getLogger(DropTriggerProcedure.class); |
| private static final int RETRY_THRESHOLD = 5; |
| |
| private String triggerName; |
| |
| public DropTriggerProcedure(boolean isGeneratedByPipe) { |
| super(isGeneratedByPipe); |
| } |
| |
| public DropTriggerProcedure(String triggerName, boolean isGeneratedByPipe) { |
| super(isGeneratedByPipe); |
| this.triggerName = triggerName; |
| } |
| |
| @Override |
| protected Flow executeFromState(ConfigNodeProcedureEnv env, DropTriggerState state) { |
| if (triggerName == null) { |
| return Flow.NO_MORE_STATE; |
| } |
| try { |
| switch (state) { |
| case INIT: |
| LOG.info("Start to drop trigger [{}]", triggerName); |
| |
| TriggerInfo triggerInfo = env.getConfigManager().getTriggerManager().getTriggerInfo(); |
| triggerInfo.acquireTriggerTableLock(); |
| |
| triggerInfo.validate(triggerName); |
| |
| env.getConfigManager() |
| .getConsensusManager() |
| .write(new UpdateTriggerStateInTablePlan(triggerName, TTriggerState.DROPPING)); |
| setNextState(DropTriggerState.CONFIG_NODE_DROPPING); |
| break; |
| |
| case CONFIG_NODE_DROPPING: |
| LOG.info("Start to drop trigger [{}] on Data Nodes", triggerName); |
| |
| // TODO consider using reference counts to determine whether to remove jar |
| if (RpcUtils.squashResponseStatusList(env.dropTriggerOnDataNodes(triggerName, false)) |
| .getCode() |
| == TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| setNextState(DropTriggerState.DATA_NODE_DROPPED); |
| } else { |
| throw new TriggerManagementException( |
| String.format("Fail to drop trigger [%s] on Data Nodes", triggerName)); |
| } |
| break; |
| |
| case DATA_NODE_DROPPED: |
| LOG.info("Start to drop trigger [{}] on Config Nodes", triggerName); |
| env.getConfigManager() |
| .getConsensusManager() |
| .write( |
| isGeneratedByPipe |
| ? new PipeEnrichedPlan(new DeleteTriggerInTablePlan(triggerName)) |
| : new DeleteTriggerInTablePlan(triggerName)); |
| setNextState(DropTriggerState.CONFIG_NODE_DROPPED); |
| break; |
| |
| case CONFIG_NODE_DROPPED: |
| env.getConfigManager().getTriggerManager().getTriggerInfo().releaseTriggerTableLock(); |
| return Flow.NO_MORE_STATE; |
| |
| default: |
| throw new IllegalArgumentException("Unknown DropTriggerState: " + state); |
| } |
| } catch (Exception e) { |
| if (isRollbackSupported(state)) { |
| LOG.warn("Drop trigger {} failed.", triggerName, e); |
| setFailure(new ProcedureException(e.getMessage())); |
| } else { |
| LOG.error( |
| "Retrievable error trying to drop trigger [{}], state [{}]", triggerName, state, e); |
| if (getCycles() > RETRY_THRESHOLD) { |
| setFailure( |
| new ProcedureException( |
| String.format("Fail to drop trigger [%s] at STATE [%s]", triggerName, state))); |
| } |
| } |
| } |
| return Flow.HAS_MORE_STATE; |
| } |
| |
| @Override |
| protected void rollbackState(ConfigNodeProcedureEnv env, DropTriggerState state) |
| throws IOException, InterruptedException, ProcedureException { |
| if (state == DropTriggerState.INIT) { |
| LOG.info("Start [INIT] rollback of trigger [{}]", triggerName); |
| |
| env.getConfigManager().getTriggerManager().getTriggerInfo().releaseTriggerTableLock(); |
| } |
| } |
| |
| @Override |
| protected boolean isRollbackSupported(DropTriggerState state) { |
| return true; |
| } |
| |
| @Override |
| protected DropTriggerState getState(int stateId) { |
| return DropTriggerState.values()[stateId]; |
| } |
| |
| @Override |
| protected int getStateId(DropTriggerState dropTriggerState) { |
| return dropTriggerState.ordinal(); |
| } |
| |
| @Override |
| protected DropTriggerState getInitialState() { |
| return DropTriggerState.INIT; |
| } |
| |
| @Override |
| public void serialize(DataOutputStream stream) throws IOException { |
| stream.writeShort( |
| isGeneratedByPipe |
| ? ProcedureType.PIPE_ENRICHED_DROP_TRIGGER_PROCEDURE.getTypeCode() |
| : ProcedureType.DROP_TRIGGER_PROCEDURE.getTypeCode()); |
| super.serialize(stream); |
| ReadWriteIOUtils.write(triggerName, stream); |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) { |
| super.deserialize(byteBuffer); |
| triggerName = ReadWriteIOUtils.readString(byteBuffer); |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that instanceof DropTriggerProcedure) { |
| DropTriggerProcedure thatProc = (DropTriggerProcedure) that; |
| return thatProc.getProcId() == this.getProcId() |
| && thatProc.getCurrentState().equals(this.getCurrentState()) |
| && thatProc.getCycles() == this.getCycles() |
| && thatProc.isGeneratedByPipe == this.isGeneratedByPipe |
| && (thatProc.triggerName).equals(this.triggerName); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash( |
| getProcId(), getCurrentState(), getCycles(), isGeneratedByPipe, triggerName); |
| } |
| } |