kafka.api.StopReplicaResponse.scala Maven / Gradle / Ivy

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/**
 * 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.api

import java.nio.ByteBuffer
import collection.mutable.HashMap
import collection.immutable.Map
import kafka.common.{TopicAndPartition, ErrorMapping}
import kafka.api.ApiUtils._


object StopReplicaResponse {
  def readFrom(buffer: ByteBuffer): StopReplicaResponse = {
    val correlationId = buffer.getInt
    val errorCode = buffer.getShort
    val numEntries = buffer.getInt

    val responseMap = new HashMap[TopicAndPartition, Short]()
    for (i<- 0 until numEntries){
      val topic = readShortString(buffer)
      val partition = buffer.getInt
      val partitionErrorCode = buffer.getShort()
      responseMap.put(TopicAndPartition(topic, partition), partitionErrorCode)
    }
    new StopReplicaResponse(correlationId, responseMap.toMap, errorCode)
  }
}


case class StopReplicaResponse(val correlationId: Int,
                               val responseMap: Map[TopicAndPartition, Short],
                               val errorCode: Short = ErrorMapping.NoError)
    extends RequestOrResponse() {
  def sizeInBytes(): Int ={
    var size =
      4 /* correlation id */ + 
      2 /* error code */ +
      4 /* number of responses */
    for ((key, value) <- responseMap) {
      size +=
        2 + key.topic.length /* topic */ +
        4 /* partition */ +
        2 /* error code for this partition */
    }
    size
  }

  def writeTo(buffer: ByteBuffer) {
    buffer.putInt(correlationId)
    buffer.putShort(errorCode)
    buffer.putInt(responseMap.size)
    for ((topicAndPartition, errorCode) <- responseMap){
      writeShortString(buffer, topicAndPartition.topic)
      buffer.putInt(topicAndPartition.partition)
      buffer.putShort(errorCode)
    }
  }

  override def describe(details: Boolean):String = { toString }
}