| /* |
| * 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.plugin; |
| |
| import org.apache.iotdb.confignode.consensus.request.write.pipe.plugin.DropPipePluginPlan; |
| import org.apache.iotdb.confignode.manager.pipe.coordinator.plugin.PipePluginCoordinator; |
| 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.impl.node.AbstractNodeProcedure; |
| import org.apache.iotdb.confignode.procedure.impl.node.AddConfigNodeProcedure; |
| import org.apache.iotdb.confignode.procedure.impl.node.RemoveConfigNodeProcedure; |
| import org.apache.iotdb.confignode.procedure.impl.node.RemoveDataNodeProcedure; |
| import org.apache.iotdb.confignode.procedure.state.pipe.plugin.DropPipePluginState; |
| 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.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; |
| |
| /** |
| * This class extends {@link AbstractNodeProcedure} to make sure that when a {@link |
| * DropPipePluginProcedure} is executed, the {@link AddConfigNodeProcedure}, {@link |
| * RemoveConfigNodeProcedure} or {@link RemoveDataNodeProcedure} will not be executed at the same |
| * time. |
| */ |
| public class DropPipePluginProcedure extends AbstractNodeProcedure<DropPipePluginState> { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(DropPipePluginProcedure.class); |
| |
| private static final int RETRY_THRESHOLD = 5; |
| |
| private String pluginName; |
| |
| public DropPipePluginProcedure() { |
| super(); |
| } |
| |
| public DropPipePluginProcedure(String pluginName) { |
| super(); |
| this.pluginName = pluginName; |
| } |
| |
| @Override |
| protected Flow executeFromState(ConfigNodeProcedureEnv env, DropPipePluginState state) |
| throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException { |
| if (pluginName == null) { |
| return Flow.NO_MORE_STATE; |
| } |
| |
| try { |
| switch (state) { |
| case LOCK: |
| return executeFromLock(env); |
| case DROP_ON_DATA_NODES: |
| return executeFromDropOnDataNodes(env); |
| case DROP_ON_CONFIG_NODES: |
| return executeFromDropOnConfigNodes(env); |
| case UNLOCK: |
| return executeFromUnlock(env); |
| } |
| } catch (Exception e) { |
| if (isRollbackSupported(state)) { |
| LOGGER.warn("DropPipePluginProcedure failed in state {}, will rollback", state, e); |
| setFailure(new ProcedureException(e.getMessage())); |
| } else { |
| LOGGER.error( |
| "Retrievable error trying to drop pipe plugin [{}], state: {}", pluginName, state, e); |
| if (getCycles() > RETRY_THRESHOLD) { |
| LOGGER.error("Fail to drop pipe plugin [{}] after {} retries", pluginName, getCycles()); |
| setFailure(new ProcedureException(e.getMessage())); |
| } |
| } |
| } |
| return Flow.HAS_MORE_STATE; |
| } |
| |
| private Flow executeFromLock(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: executeFromLock({})", pluginName); |
| final PipePluginCoordinator pipePluginCoordinator = |
| env.getConfigManager().getPipeManager().getPipePluginCoordinator(); |
| |
| pipePluginCoordinator.lock(); |
| |
| try { |
| pipePluginCoordinator.getPipePluginInfo().validateBeforeDroppingPipePlugin(pluginName); |
| } catch (PipeException e) { |
| // if the pipe plugin is a built-in plugin, we should not drop it |
| LOGGER.warn(e.getMessage()); |
| setFailure(new ProcedureException(e.getMessage())); |
| pipePluginCoordinator.unlock(); |
| return Flow.NO_MORE_STATE; |
| } |
| |
| try { |
| env.getConfigManager().getConsensusManager().write(new DropPipePluginPlan(pluginName)); |
| } catch (ConsensusException e) { |
| LOGGER.warn("Failed in the write API executing the consensus layer due to: ", e); |
| } |
| |
| setNextState(DropPipePluginState.DROP_ON_DATA_NODES); |
| return Flow.HAS_MORE_STATE; |
| } |
| |
| private Flow executeFromDropOnDataNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: executeFromDropOnDataNodes({})", pluginName); |
| |
| if (RpcUtils.squashResponseStatusList(env.dropPipePluginOnDataNodes(pluginName, false)) |
| .getCode() |
| == TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| setNextState(DropPipePluginState.DROP_ON_CONFIG_NODES); |
| return Flow.HAS_MORE_STATE; |
| } |
| |
| throw new PipeException( |
| String.format("Failed to drop pipe plugin %s on data nodes", pluginName)); |
| } |
| |
| private Flow executeFromDropOnConfigNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: executeFromDropOnConfigNodes({})", pluginName); |
| |
| try { |
| env.getConfigManager().getConsensusManager().write(new DropPipePluginPlan(pluginName)); |
| } catch (ConsensusException e) { |
| LOGGER.warn("Failed in the write API executing the consensus layer due to: ", e); |
| } |
| |
| setNextState(DropPipePluginState.UNLOCK); |
| return Flow.HAS_MORE_STATE; |
| } |
| |
| private Flow executeFromUnlock(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: executeFromUnlock({})", pluginName); |
| |
| env.getConfigManager().getPipeManager().getPipePluginCoordinator().unlock(); |
| |
| return Flow.NO_MORE_STATE; |
| } |
| |
| @Override |
| protected void rollbackState(ConfigNodeProcedureEnv env, DropPipePluginState state) |
| throws IOException, InterruptedException, ProcedureException { |
| switch (state) { |
| case LOCK: |
| rollbackFromLock(env); |
| break; |
| case DROP_ON_DATA_NODES: |
| rollbackFromDropOnDataNodes(env); |
| break; |
| case DROP_ON_CONFIG_NODES: |
| rollbackFromDropOnConfigNodes(env); |
| break; |
| } |
| } |
| |
| private void rollbackFromLock(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: rollbackFromLock({})", pluginName); |
| |
| env.getConfigManager().getPipeManager().getPipePluginCoordinator().unlock(); |
| } |
| |
| private void rollbackFromDropOnDataNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: rollbackFromDropOnDataNodes({})", pluginName); |
| |
| // do nothing but wait for rolling back to the previous state: LOCK |
| // TODO: we should drop the pipe plugin on data nodes properly with RuntimeAgent's help |
| } |
| |
| private void rollbackFromDropOnConfigNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropPipePluginProcedure: rollbackFromDropOnConfigNodes({})", pluginName); |
| |
| // do nothing but wait for rolling back to the previous state: DROP_ON_DATA_NODES |
| // TODO: we should drop the pipe plugin on config nodes properly with RuntimeCoordinator's help |
| } |
| |
| @Override |
| protected boolean isRollbackSupported(DropPipePluginState state) { |
| switch (state) { |
| case LOCK: |
| case DROP_ON_DATA_NODES: |
| case DROP_ON_CONFIG_NODES: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| @Override |
| protected DropPipePluginState getState(int stateId) { |
| return DropPipePluginState.values()[stateId]; |
| } |
| |
| @Override |
| protected int getStateId(DropPipePluginState dropPipePluginState) { |
| return dropPipePluginState.ordinal(); |
| } |
| |
| @Override |
| protected DropPipePluginState getInitialState() { |
| return DropPipePluginState.LOCK; |
| } |
| |
| @Override |
| public void serialize(DataOutputStream stream) throws IOException { |
| stream.writeShort(ProcedureType.DROP_PIPE_PLUGIN_PROCEDURE.getTypeCode()); |
| super.serialize(stream); |
| ReadWriteIOUtils.write(pluginName, stream); |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) { |
| super.deserialize(byteBuffer); |
| pluginName = ReadWriteIOUtils.readString(byteBuffer); |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that instanceof DropPipePluginProcedure) { |
| final DropPipePluginProcedure thatProcedure = (DropPipePluginProcedure) that; |
| return thatProcedure.getProcId() == getProcId() |
| && thatProcedure.getCurrentState().equals(this.getCurrentState()) |
| && thatProcedure.getCycles() == this.getCycles() |
| && (thatProcedure.pluginName).equals(pluginName); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(getProcId(), getCurrentState(), getCycles(), pluginName); |
| } |
| } |