kafka.server.ThrottledChannel.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.server
import java.util.concurrent.{Delayed, TimeUnit}
import kafka.network
import kafka.network.RequestChannel
import kafka.network.RequestChannel.Response
import kafka.utils.Logging
import org.apache.kafka.common.utils.Time
/**
* Represents a request whose response has been delayed.
* @param request The request that has been delayed
* @param time Time instance to use
* @param throttleTimeMs Delay associated with this request
* @param channelThrottlingCallback Callback for channel throttling
*/
class ThrottledChannel(val request: RequestChannel.Request, val time: Time, val throttleTimeMs: Int, channelThrottlingCallback: Response => Unit)
extends Delayed with Logging {
var endTime = time.milliseconds + throttleTimeMs
// Notify the socket server that throttling has started for this channel.
channelThrottlingCallback(new RequestChannel.StartThrottlingResponse(request))
// Notify the socket server that throttling has been done for this channel.
def notifyThrottlingDone(): Unit = {
trace(s"Channel throttled for: $throttleTimeMs ms")
channelThrottlingCallback(new network.RequestChannel.EndThrottlingResponse(request))
}
override def getDelay(unit: TimeUnit): Long = {
unit.convert(endTime - time.milliseconds, TimeUnit.MILLISECONDS)
}
override def compareTo(d: Delayed): Int = {
val other = d.asInstanceOf[ThrottledChannel]
if (this.endTime < other.endTime) -1
else if (this.endTime > other.endTime) 1
else 0
}
}