| /** |
| * 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.common.TopicAndPartition |
| import kafka.api.ApiUtils._ |
| import org.apache.kafka.common.protocol.Errors |
| |
| |
| object OffsetResponse { |
| |
| def readFrom(buffer: ByteBuffer): OffsetResponse = { |
| val correlationId = buffer.getInt |
| val numTopics = buffer.getInt |
| val pairs = (1 to numTopics).flatMap(_ => { |
| val topic = readShortString(buffer) |
| val numPartitions = buffer.getInt |
| (1 to numPartitions).map(_ => { |
| val partition = buffer.getInt |
| val error = buffer.getShort |
| val numOffsets = buffer.getInt |
| val offsets = (1 to numOffsets).map(_ => buffer.getLong) |
| (TopicAndPartition(topic, partition), PartitionOffsetsResponse(error, offsets)) |
| }) |
| }) |
| OffsetResponse(correlationId, Map(pairs:_*)) |
| } |
| |
| } |
| |
| |
| case class PartitionOffsetsResponse(error: Short, offsets: Seq[Long]) { |
| override def toString: String = { |
| new String("error: " + Errors.forCode(error).exceptionName + " offsets: " + offsets.mkString) |
| } |
| } |
| |
| |
| case class OffsetResponse(correlationId: Int, |
| partitionErrorAndOffsets: Map[TopicAndPartition, PartitionOffsetsResponse]) |
| extends RequestOrResponse() { |
| |
| lazy val offsetsGroupedByTopic = partitionErrorAndOffsets.groupBy(_._1.topic) |
| |
| def hasError = partitionErrorAndOffsets.values.exists(_.error != Errors.NONE.code) |
| |
| val sizeInBytes = { |
| 4 + /* correlation id */ |
| 4 + /* topic count */ |
| offsetsGroupedByTopic.foldLeft(0)((foldedTopics, currTopic) => { |
| val (topic, errorAndOffsetsMap) = currTopic |
| foldedTopics + |
| shortStringLength(topic) + |
| 4 + /* partition count */ |
| errorAndOffsetsMap.foldLeft(0)((foldedPartitions, currPartition) => { |
| foldedPartitions + |
| 4 + /* partition id */ |
| 2 + /* partition error */ |
| 4 + /* offset array length */ |
| currPartition._2.offsets.size * 8 /* offset */ |
| }) |
| }) |
| } |
| |
| def writeTo(buffer: ByteBuffer) { |
| buffer.putInt(correlationId) |
| buffer.putInt(offsetsGroupedByTopic.size) // topic count |
| offsetsGroupedByTopic.foreach { |
| case((topic, errorAndOffsetsMap)) => |
| writeShortString(buffer, topic) |
| buffer.putInt(errorAndOffsetsMap.size) // partition count |
| errorAndOffsetsMap.foreach { |
| case((TopicAndPartition(_, partition), errorAndOffsets)) => |
| buffer.putInt(partition) |
| buffer.putShort(errorAndOffsets.error) |
| buffer.putInt(errorAndOffsets.offsets.size) // offset array length |
| errorAndOffsets.offsets.foreach(buffer.putLong(_)) |
| } |
| } |
| } |
| |
| override def describe(details: Boolean):String = { toString } |
| } |
| |