kafka BrokerBlockingSender 源码

kafka BrokerBlockingSender 代码

文件路径：/core/src/main/scala/kafka/server/BrokerBlockingSender.scala

/**
  * 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 java.net.SocketTimeoutException

import kafka.cluster.BrokerEndPoint
import org.apache.kafka.clients._
import org.apache.kafka.common.metrics.Metrics
import org.apache.kafka.common.network._
import org.apache.kafka.common.requests.AbstractRequest
import org.apache.kafka.common.security.JaasContext
import org.apache.kafka.common.utils.{LogContext, Time}
import org.apache.kafka.clients.{ApiVersions, ClientResponse, ManualMetadataUpdater, NetworkClient}
import org.apache.kafka.common.{Node, Reconfigurable}
import org.apache.kafka.common.requests.AbstractRequest.Builder

import scala.jdk.CollectionConverters._

trait BlockingSend {

  def brokerEndPoint(): BrokerEndPoint

  def sendRequest(requestBuilder: AbstractRequest.Builder[_ <: AbstractRequest]): ClientResponse

  def initiateClose(): Unit

  def close(): Unit
}

class BrokerBlockingSender(sourceBroker: BrokerEndPoint,
                           brokerConfig: KafkaConfig,
                           metrics: Metrics,
                           time: Time,
                           fetcherId: Int,
                           clientId: String,
                           logContext: LogContext) extends BlockingSend {

  private val sourceNode = new Node(sourceBroker.id, sourceBroker.host, sourceBroker.port)
  private val socketTimeout: Int = brokerConfig.replicaSocketTimeoutMs

  private val (networkClient, reconfigurableChannelBuilder) = {
    val channelBuilder = ChannelBuilders.clientChannelBuilder(
      brokerConfig.interBrokerSecurityProtocol,
      JaasContext.Type.SERVER,
      brokerConfig,
      brokerConfig.interBrokerListenerName,
      brokerConfig.saslMechanismInterBrokerProtocol,
      time,
      brokerConfig.saslInterBrokerHandshakeRequestEnable,
      logContext
    )
    val reconfigurableChannelBuilder = channelBuilder match {
      case reconfigurable: Reconfigurable =>
        brokerConfig.addReconfigurable(reconfigurable)
        Some(reconfigurable)
      case _ => None
    }
    val selector = new Selector(
      NetworkReceive.UNLIMITED,
      brokerConfig.connectionsMaxIdleMs,
      metrics,
      time,
      "replica-fetcher",
      Map("broker-id" -> sourceBroker.id.toString, "fetcher-id" -> fetcherId.toString).asJava,
      false,
      channelBuilder,
      logContext
    )
    val networkClient = new NetworkClient(
      selector,
      new ManualMetadataUpdater(),
      clientId,
      1,
      0,
      0,
      Selectable.USE_DEFAULT_BUFFER_SIZE,
      brokerConfig.replicaSocketReceiveBufferBytes,
      brokerConfig.requestTimeoutMs,
      brokerConfig.connectionSetupTimeoutMs,
      brokerConfig.connectionSetupTimeoutMaxMs,
      time,
      false,
      new ApiVersions,
      logContext
    )
    (networkClient, reconfigurableChannelBuilder)
  }

  override def brokerEndPoint(): BrokerEndPoint = sourceBroker

  override def sendRequest(requestBuilder: Builder[_ <: AbstractRequest]): ClientResponse = {
    try {
      if (!NetworkClientUtils.awaitReady(networkClient, sourceNode, time, socketTimeout))
        throw new SocketTimeoutException(s"Failed to connect within $socketTimeout ms")
      else {
        val clientRequest = networkClient.newClientRequest(sourceBroker.id.toString, requestBuilder,
          time.milliseconds(), true)
        NetworkClientUtils.sendAndReceive(networkClient, clientRequest, time)
      }
    }
    catch {
      case e: Throwable =>
        networkClient.close(sourceBroker.id.toString)
        throw e
    }
  }

  override def initiateClose(): Unit = {
    reconfigurableChannelBuilder.foreach(brokerConfig.removeReconfigurable)
    networkClient.initiateClose()
  }

  def close(): Unit = {
    networkClient.close()
  }

  override def toString: String = {
    s"BrokerBlockingSender(sourceBroker=$sourceBroker, fetcherId=$fetcherId)"
  }
}

相关信息

kafka 源码目录

相关文章

kafka AbstractFetcherManager 源码

kafka AbstractFetcherThread 源码

kafka AclApis 源码

kafka ActionQueue 源码

kafka AlterPartitionManager 源码

kafka ApiVersionManager 源码

kafka AuthHelper 源码

kafka AutoTopicCreationManager 源码

kafka BrokerFeatures 源码

kafka BrokerLifecycleManager 源码