kafka.api.GroupCoordinatorResponse.scala Maven / Gradle / Ivy
/**
* 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 kafka.cluster.BrokerEndPoint
import org.apache.kafka.common.protocol.Errors
object GroupCoordinatorResponse {
val CurrentVersion = 0
private val NoBrokerEndpointOpt = Some(BrokerEndPoint(id = -1, host = "", port = -1))
def readFrom(buffer: ByteBuffer) = {
val correlationId = buffer.getInt
val errorCode = buffer.getShort
val broker = BrokerEndPoint.readFrom(buffer)
val coordinatorOpt = if (errorCode == Errors.NONE.code)
Some(broker)
else
None
GroupCoordinatorResponse(coordinatorOpt, errorCode, correlationId)
}
}
case class GroupCoordinatorResponse (coordinatorOpt: Option[BrokerEndPoint], errorCode: Short, correlationId: Int)
extends RequestOrResponse() {
def sizeInBytes =
4 + /* correlationId */
2 + /* error code */
coordinatorOpt.orElse(GroupCoordinatorResponse.NoBrokerEndpointOpt).get.sizeInBytes
def writeTo(buffer: ByteBuffer) {
buffer.putInt(correlationId)
buffer.putShort(errorCode)
coordinatorOpt.orElse(GroupCoordinatorResponse.NoBrokerEndpointOpt).foreach(_.writeTo(buffer))
}
def describe(details: Boolean) = toString
}