samza-kafka/src/main/scala/org/apache/samza/system/kafka/DefaultFetchSimpleConsumer.scala

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.samza.system.kafka

import kafka.consumer.SimpleConsumer
import kafka.api._
import kafka.common.TopicAndPartition
import kafka.consumer.ConsumerConfig

class DefaultFetchSimpleConsumer(host: scala.Predef.String, port: scala.Int, soTimeout: scala.Int, bufferSize: scala.Int,
                                 clientId: scala.Predef.String, fetchSize: Int = ConsumerConfig.FetchSize,
                                 minBytes:Int = ConsumerConfig.MinFetchBytes, maxWait:Int = ConsumerConfig.MaxFetchWaitMs)
  extends SimpleConsumer(host, port, soTimeout, bufferSize, clientId) {

  def defaultFetch(fetches:(TopicAndPartition, Long)*) = {
    val fbr = new FetchRequestBuilder().maxWait(maxWait)
      .minBytes(minBytes)
      .clientId(clientId)

    fetches.foreach(f => fbr.addFetch(f._1.topic, f._1.partition, f._2, fetchSize))

    this.fetch(fbr.build())
  }

  override def close(): Unit = super.close()

  override def send(request: TopicMetadataRequest): TopicMetadataResponse = super.send(request)

  override def fetch(request: FetchRequest): FetchResponse = super.fetch(request)

  override def getOffsetsBefore(request: OffsetRequest): OffsetResponse = super.getOffsetsBefore(request)

  override def commitOffsets(request: OffsetCommitRequest): OffsetCommitResponse = super.commitOffsets(request)

  override def fetchOffsets(request: OffsetFetchRequest): OffsetFetchResponse = super.fetchOffsets(request)

  override def earliestOrLatestOffset(topicAndPartition: TopicAndPartition, earliestOrLatest: Long, consumerId: Int): Long = super.earliestOrLatestOffset(topicAndPartition, earliestOrLatest, consumerId)
}