jolshan commented on code in PR #13391: URL: https://github.com/apache/kafka/pull/13391#discussion_r1152543409
########## core/src/main/scala/kafka/server/AddPartitionsToTxnManager.scala: ########## @@ -0,0 +1,173 @@ +/** + * 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 kafka.server + +import kafka.common.{InterBrokerSendThread, RequestAndCompletionHandler} +import org.apache.kafka.clients.{ClientResponse, NetworkClient, RequestCompletionHandler} +import org.apache.kafka.common.{InvalidRecordException, Node, TopicPartition} +import org.apache.kafka.common.message.AddPartitionsToTxnRequestData.{AddPartitionsToTxnTransaction, AddPartitionsToTxnTransactionCollection} +import org.apache.kafka.common.protocol.Errors +import org.apache.kafka.common.requests.{AddPartitionsToTxnRequest, AddPartitionsToTxnResponse} +import org.apache.kafka.common.utils.Time + +import java.util.Collections +import scala.collection.mutable + +object AddPartitionsToTxnManager { + type AppendCallback = Map[TopicPartition, Errors] => Unit +} + + +class TransactionDataAndCallbacks(val transactionData: AddPartitionsToTxnTransactionCollection, + val callbacks: mutable.Map[String, AddPartitionsToTxnManager.AppendCallback]) + + +class AddPartitionsToTxnManager(config: KafkaConfig, client: NetworkClient, time: Time) + extends InterBrokerSendThread("AddPartitionsToTxnSenderThread-" + config.brokerId, client, config.requestTimeoutMs, time) { + + private val inflightNodes = mutable.HashSet[Node]() + private val nodesToTransactions = mutable.Map[Node, TransactionDataAndCallbacks]() + + def addTxnData(node: Node, transactionData: AddPartitionsToTxnTransaction, callback: AddPartitionsToTxnManager.AppendCallback): Unit = { + // Check if we have already (either node or individual transaction). + val currentNodeAndTransactionDataOpt = nodesToTransactions.get(node) + currentNodeAndTransactionDataOpt match { + case None => + nodesToTransactions.put(node, + new TransactionDataAndCallbacks(new AddPartitionsToTxnTransactionCollection(Collections.singletonList(transactionData).iterator()), + mutable.Map(transactionData.transactionalId() -> callback))) + case Some(currentNodeAndTransactionData) => + // Check if we already have txn ID -- this should only happen in epoch bump case. If so, we should return error for old entry and remove from queue. + val currentTransactionData = currentNodeAndTransactionData.transactionData.find(transactionData.transactionalId) + if (currentTransactionData != null) { + if (currentTransactionData.producerEpoch() < transactionData.producerEpoch()) { + val topicPartitionsToError = mutable.Map[TopicPartition, Errors]() + currentTransactionData.topics().forEach { topic => + topic.partitions().forEach { partition => + topicPartitionsToError.put(new TopicPartition(topic.name(), partition), Errors.INVALID_PRODUCER_EPOCH) + } + } + val oldCallback = currentNodeAndTransactionData.callbacks(transactionData.transactionalId()) + currentNodeAndTransactionData.transactionData.remove(transactionData) + oldCallback(topicPartitionsToError.toMap) + } else { + // We should never see a request on the same epoch since we haven't finished handling the one in queue + throw new InvalidRecordException("Received a second request from the same connection without finishing the first.") + } + } + currentNodeAndTransactionData.transactionData.add(transactionData) + currentNodeAndTransactionData.callbacks.put(transactionData.transactionalId(), callback) + } + wakeup() + } + + private class AddPartitionsToTxnHandler(node: Node, transactionDataAndCallbacks: TransactionDataAndCallbacks) extends RequestCompletionHandler { + override def onComplete(response: ClientResponse): Unit = { Review Comment: Actually -- I misread the original comment -- I thought this was about callback time. I'm wondering if we want to report this in a different way after all. It would be a bit confusing to report this as remote time since this is technically still on the broker. I'm also not sure how we would parse the separate metric. Is the idea that we would somehow get the time to send and receive the response and subtract it from the local time? I don't even see the local time metric getting incremented at this level. One idea is to take the request time and subtract the time to do the callback. I'd have to see if this is even possible though. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
