| /* |
| * 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.subscription.topic; |
| |
| import org.apache.iotdb.common.rpc.thrift.TSStatus; |
| import org.apache.iotdb.confignode.consensus.request.write.subscription.topic.DropTopicPlan; |
| import org.apache.iotdb.confignode.procedure.env.ConfigNodeProcedureEnv; |
| import org.apache.iotdb.confignode.procedure.impl.subscription.AbstractOperateSubscriptionProcedure; |
| import org.apache.iotdb.confignode.procedure.impl.subscription.SubscriptionOperation; |
| import org.apache.iotdb.confignode.procedure.store.ProcedureType; |
| import org.apache.iotdb.consensus.exception.ConsensusException; |
| import org.apache.iotdb.rpc.RpcUtils; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| import org.apache.iotdb.rpc.subscription.exception.SubscriptionException; |
| 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.List; |
| import java.util.Objects; |
| |
| public class DropTopicProcedure extends AbstractOperateSubscriptionProcedure { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(DropTopicProcedure.class); |
| |
| private String topicName; |
| |
| public DropTopicProcedure() { |
| super(); |
| } |
| |
| public DropTopicProcedure(String topicName) { |
| super(); |
| this.topicName = topicName; |
| } |
| |
| @Override |
| protected SubscriptionOperation getOperation() { |
| return SubscriptionOperation.DROP_TOPIC; |
| } |
| |
| @Override |
| protected void executeFromValidate(ConfigNodeProcedureEnv env) throws SubscriptionException { |
| LOGGER.info("DropTopicProcedure: executeFromValidate({})", topicName); |
| |
| subscriptionInfo.get().validateBeforeDroppingTopic(topicName); |
| } |
| |
| @Override |
| protected void executeFromOperateOnConfigNodes(ConfigNodeProcedureEnv env) |
| throws SubscriptionException { |
| LOGGER.info("DropTopicProcedure: executeFromOperateOnConfigNodes({})", topicName); |
| |
| TSStatus response; |
| try { |
| response = env.getConfigManager().getConsensusManager().write(new DropTopicPlan(topicName)); |
| } catch (ConsensusException e) { |
| LOGGER.warn("Failed in the write API executing the consensus layer due to: ", e); |
| response = |
| new TSStatus(TSStatusCode.DROP_TOPIC_ERROR.getStatusCode()).setMessage(e.getMessage()); |
| } |
| |
| if (response.getCode() != TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| throw new SubscriptionException( |
| String.format( |
| "Failed to drop topic %s on config nodes, because %s", topicName, response)); |
| } |
| } |
| |
| @Override |
| protected void executeFromOperateOnDataNodes(ConfigNodeProcedureEnv env) |
| throws SubscriptionException { |
| LOGGER.info("DropTopicProcedure: executeFromOperateOnDataNodes({})", topicName); |
| |
| final List<TSStatus> statuses = env.dropSingleTopicOnDataNode(topicName); |
| if (RpcUtils.squashResponseStatusList(statuses).getCode() |
| != TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| throw new SubscriptionException( |
| String.format("Failed to drop topic %s on data nodes, because %s", topicName, statuses)); |
| } |
| } |
| |
| @Override |
| protected void rollbackFromValidate(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropTopicProcedure: rollbackFromValidate({})", topicName); |
| } |
| |
| @Override |
| protected void rollbackFromOperateOnConfigNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropTopicProcedure: rollbackFromCreateOnConfigNodes({})", topicName); |
| } |
| |
| @Override |
| protected void rollbackFromOperateOnDataNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info("DropTopicProcedure: rollbackFromCreateOnDataNodes({})", topicName); |
| } |
| |
| @Override |
| public void serialize(DataOutputStream stream) throws IOException { |
| stream.writeShort(ProcedureType.DROP_TOPIC_PROCEDURE.getTypeCode()); |
| super.serialize(stream); |
| |
| ReadWriteIOUtils.write(topicName, stream); |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) { |
| super.deserialize(byteBuffer); |
| |
| topicName = ReadWriteIOUtils.readString(byteBuffer); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| DropTopicProcedure that = (DropTopicProcedure) o; |
| return Objects.equals(getProcId(), that.getProcId()) |
| && Objects.equals(getCurrentState(), that.getCurrentState()) |
| && getCycles() == that.getCycles() |
| && Objects.equals(topicName, that.topicName); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(getProcId(), getCurrentState(), getCycles(), topicName); |
| } |
| } |