| /** |
| * 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.api.ApiUtils._ |
| import kafka.cluster.Broker |
| import kafka.common.{ErrorMapping, TopicAndPartition} |
| import kafka.network.{BoundedByteBufferSend, RequestChannel} |
| import kafka.network.RequestChannel.Response |
| import collection.Set |
| |
| object UpdateMetadataRequest { |
| val CurrentVersion = 0.shortValue |
| val IsInit: Boolean = true |
| val NotInit: Boolean = false |
| val DefaultAckTimeout: Int = 1000 |
| |
| def readFrom(buffer: ByteBuffer): UpdateMetadataRequest = { |
| val versionId = buffer.getShort |
| val correlationId = buffer.getInt |
| val clientId = readShortString(buffer) |
| val controllerId = buffer.getInt |
| val controllerEpoch = buffer.getInt |
| val partitionStateInfosCount = buffer.getInt |
| val partitionStateInfos = new collection.mutable.HashMap[TopicAndPartition, PartitionStateInfo] |
| |
| for(i <- 0 until partitionStateInfosCount){ |
| val topic = readShortString(buffer) |
| val partition = buffer.getInt |
| val partitionStateInfo = PartitionStateInfo.readFrom(buffer) |
| |
| partitionStateInfos.put(TopicAndPartition(topic, partition), partitionStateInfo) |
| } |
| |
| val numAliveBrokers = buffer.getInt |
| val aliveBrokers = for(i <- 0 until numAliveBrokers) yield Broker.readFrom(buffer) |
| new UpdateMetadataRequest(versionId, correlationId, clientId, controllerId, controllerEpoch, |
| partitionStateInfos.toMap, aliveBrokers.toSet) |
| } |
| } |
| |
| case class UpdateMetadataRequest (versionId: Short, |
| correlationId: Int, |
| clientId: String, |
| controllerId: Int, |
| controllerEpoch: Int, |
| partitionStateInfos: Map[TopicAndPartition, PartitionStateInfo], |
| aliveBrokers: Set[Broker]) |
| extends RequestOrResponse(Some(RequestKeys.UpdateMetadataKey)) { |
| |
| def this(controllerId: Int, controllerEpoch: Int, correlationId: Int, clientId: String, |
| partitionStateInfos: Map[TopicAndPartition, PartitionStateInfo], aliveBrokers: Set[Broker]) = { |
| this(UpdateMetadataRequest.CurrentVersion, correlationId, clientId, |
| controllerId, controllerEpoch, partitionStateInfos, aliveBrokers) |
| } |
| |
| def writeTo(buffer: ByteBuffer) { |
| buffer.putShort(versionId) |
| buffer.putInt(correlationId) |
| writeShortString(buffer, clientId) |
| buffer.putInt(controllerId) |
| buffer.putInt(controllerEpoch) |
| buffer.putInt(partitionStateInfos.size) |
| for((key, value) <- partitionStateInfos){ |
| writeShortString(buffer, key.topic) |
| buffer.putInt(key.partition) |
| value.writeTo(buffer) |
| } |
| buffer.putInt(aliveBrokers.size) |
| aliveBrokers.foreach(_.writeTo(buffer)) |
| } |
| |
| def sizeInBytes(): Int = { |
| var size = |
| 2 /* version id */ + |
| 4 /* correlation id */ + |
| (2 + clientId.length) /* client id */ + |
| 4 /* controller id */ + |
| 4 /* controller epoch */ + |
| 4 /* number of partitions */ |
| for((key, value) <- partitionStateInfos) |
| size += (2 + key.topic.length) /* topic */ + 4 /* partition */ + value.sizeInBytes /* partition state info */ |
| size += 4 /* number of alive brokers in the cluster */ |
| for(broker <- aliveBrokers) |
| size += broker.sizeInBytes /* broker info */ |
| size |
| } |
| |
| override def toString(): String = { |
| describe(true) |
| } |
| |
| override def handleError(e: Throwable, requestChannel: RequestChannel, request: RequestChannel.Request): Unit = { |
| val errorResponse = new UpdateMetadataResponse(correlationId, ErrorMapping.codeFor(e.getCause.asInstanceOf[Class[Throwable]])) |
| requestChannel.sendResponse(new Response(request, new BoundedByteBufferSend(errorResponse))) |
| } |
| |
| override def describe(details: Boolean): String = { |
| val updateMetadataRequest = new StringBuilder |
| updateMetadataRequest.append("Name:" + this.getClass.getSimpleName) |
| updateMetadataRequest.append(";Version:" + versionId) |
| updateMetadataRequest.append(";Controller:" + controllerId) |
| updateMetadataRequest.append(";ControllerEpoch:" + controllerEpoch) |
| updateMetadataRequest.append(";CorrelationId:" + correlationId) |
| updateMetadataRequest.append(";ClientId:" + clientId) |
| updateMetadataRequest.append(";AliveBrokers:" + aliveBrokers.mkString(",")) |
| if(details) |
| updateMetadataRequest.append(";PartitionState:" + partitionStateInfos.mkString(",")) |
| updateMetadataRequest.toString() |
| } |
| } |