| /* |
| * 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.commons.subscription.meta.topic.TopicMeta; |
| import org.apache.iotdb.confignode.consensus.request.write.subscription.topic.CreateTopicPlan; |
| 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.confignode.rpc.thrift.TCreateTopicReq; |
| 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.Map; |
| import java.util.Objects; |
| |
| public class CreateTopicProcedure extends AbstractOperateSubscriptionProcedure { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(CreateTopicProcedure.class); |
| |
| private TCreateTopicReq createTopicReq; |
| private TopicMeta topicMeta; |
| |
| public CreateTopicProcedure() { |
| super(); |
| } |
| |
| public CreateTopicProcedure(TCreateTopicReq createTopicReq) throws SubscriptionException { |
| super(); |
| this.createTopicReq = createTopicReq; |
| } |
| |
| @Override |
| protected SubscriptionOperation getOperation() { |
| return SubscriptionOperation.CREATE_TOPIC; |
| } |
| |
| @Override |
| protected void executeFromValidate(ConfigNodeProcedureEnv env) throws SubscriptionException { |
| LOGGER.info("CreateTopicProcedure: executeFromValidate"); |
| |
| // 1. check if the topic exists |
| subscriptionInfo.get().validateBeforeCreatingTopic(createTopicReq); |
| |
| // 2. create the topic meta |
| topicMeta = |
| new TopicMeta( |
| createTopicReq.getTopicName(), |
| System.currentTimeMillis(), |
| createTopicReq.getTopicAttributes()); |
| } |
| |
| @Override |
| protected void executeFromOperateOnConfigNodes(ConfigNodeProcedureEnv env) |
| throws SubscriptionException { |
| LOGGER.info( |
| "CreateTopicProcedure: executeFromOperateOnConfigNodes({})", topicMeta.getTopicName()); |
| |
| TSStatus response; |
| try { |
| response = env.getConfigManager().getConsensusManager().write(new CreateTopicPlan(topicMeta)); |
| } catch (ConsensusException e) { |
| LOGGER.warn("Failed in the write API executing the consensus layer due to: ", e); |
| response = |
| new TSStatus(TSStatusCode.CREATE_TOPIC_ERROR.getStatusCode()).setMessage(e.getMessage()); |
| } |
| |
| if (response.getCode() != TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| throw new SubscriptionException( |
| String.format( |
| "Failed to create topic %s on config nodes, because %s", topicMeta, response)); |
| } |
| } |
| |
| @Override |
| protected void executeFromOperateOnDataNodes(ConfigNodeProcedureEnv env) |
| throws SubscriptionException { |
| LOGGER.info( |
| "CreateTopicProcedure: executeFromOperateOnDataNodes({})", topicMeta.getTopicName()); |
| |
| try { |
| final List<TSStatus> statuses = env.pushSingleTopicOnDataNode(topicMeta.serialize()); |
| if (RpcUtils.squashResponseStatusList(statuses).getCode() |
| != TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| throw new SubscriptionException( |
| String.format( |
| "Failed to create topic %s on data nodes, because %s", topicMeta, statuses)); |
| } |
| } catch (IOException e) { |
| LOGGER.warn("Failed to serialize the topic meta due to: ", e); |
| throw new SubscriptionException( |
| String.format( |
| "Failed to create topic %s on data nodes, because %s", topicMeta, e.getMessage())); |
| } |
| } |
| |
| @Override |
| protected void rollbackFromValidate(ConfigNodeProcedureEnv env) { |
| LOGGER.info("CreateTopicProcedure: rollbackFromValidate({})", topicMeta.getTopicName()); |
| } |
| |
| @Override |
| protected void rollbackFromOperateOnConfigNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info( |
| "CreateTopicProcedure: rollbackFromCreateOnConfigNodes({})", topicMeta.getTopicName()); |
| |
| TSStatus response; |
| try { |
| response = |
| env.getConfigManager() |
| .getConsensusManager() |
| .write(new DropTopicPlan(topicMeta.getTopicName())); |
| } 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 rollback topic %s on config nodes, because %s", topicMeta, response)); |
| } |
| } |
| |
| @Override |
| protected void rollbackFromOperateOnDataNodes(ConfigNodeProcedureEnv env) { |
| LOGGER.info( |
| "CreateTopicProcedure: rollbackFromCreateOnDataNodes({})", topicMeta.getTopicName()); |
| |
| final List<TSStatus> statuses = env.dropSingleTopicOnDataNode(topicMeta.getTopicName()); |
| if (RpcUtils.squashResponseStatusList(statuses).getCode() |
| != TSStatusCode.SUCCESS_STATUS.getStatusCode()) { |
| throw new SubscriptionException( |
| String.format( |
| "Failed to rollback topic %s on data nodes, because %s", topicMeta, statuses)); |
| } |
| } |
| |
| @Override |
| public void serialize(DataOutputStream stream) throws IOException { |
| stream.writeShort(ProcedureType.CREATE_TOPIC_PROCEDURE.getTypeCode()); |
| super.serialize(stream); |
| |
| ReadWriteIOUtils.write(createTopicReq.getTopicName(), stream); |
| final int size = createTopicReq.getTopicAttributesSize(); |
| ReadWriteIOUtils.write(size, stream); |
| if (size != 0) { |
| for (Map.Entry<String, String> entry : createTopicReq.getTopicAttributes().entrySet()) { |
| ReadWriteIOUtils.write(entry.getKey(), stream); |
| ReadWriteIOUtils.write(entry.getValue(), stream); |
| } |
| } |
| |
| ReadWriteIOUtils.write(topicMeta != null, stream); |
| if (topicMeta != null) { |
| topicMeta.serialize(stream); |
| } |
| } |
| |
| @Override |
| public void deserialize(ByteBuffer byteBuffer) { |
| super.deserialize(byteBuffer); |
| |
| createTopicReq = new TCreateTopicReq(); |
| createTopicReq.setTopicName(ReadWriteIOUtils.readString(byteBuffer)); |
| final int size = ReadWriteIOUtils.readInt(byteBuffer); |
| for (int i = 0; i < size; i++) { |
| createTopicReq.putToTopicAttributes( |
| ReadWriteIOUtils.readString(byteBuffer), ReadWriteIOUtils.readString(byteBuffer)); |
| } |
| |
| if (ReadWriteIOUtils.readBool(byteBuffer)) { |
| topicMeta = TopicMeta.deserialize(byteBuffer); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| CreateTopicProcedure that = (CreateTopicProcedure) o; |
| return Objects.equals(getProcId(), that.getProcId()) |
| && Objects.equals(getCurrentState(), that.getCurrentState()) |
| && getCycles() == that.getCycles() |
| && Objects.equals(createTopicReq, that.createTopicReq) |
| && Objects.equals(topicMeta, that.topicMeta); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(getProcId(), getCurrentState(), getCycles(), createTopicReq, topicMeta); |
| } |
| } |