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/*
* =========================================================================================
* Copyright © 2013-2015 the kamon project <http://kamon.io/>
*
* Licensed 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 kamon.util.executors
import kamon.metric.{EntityRecorderFactory, GenericEntityRecorder}
import kamon.metric.instrument.{Gauge, MinMaxCounter, DifferentialValueCollector, InstrumentFactory}
import java.util.concurrent.{ForkJoinPool ⇒ JavaForkJoinPool, ThreadPoolExecutor}
import kamon.util.executors.ForkJoinPools.ForkJoinMetrics
import scala.concurrent.forkjoin.ForkJoinPool
object ForkJoinPools {
trait ForkJoinMetrics[T] {
def getParallelism(fjp: T): Long
def getPoolSize(fjp: T): Long
def getActiveThreadCount(fjp: T): Long
def getRunningThreadCount(fjp: T): Long
def getQueuedTaskCount(fjp: T): Long
def getQueuedSubmissionCount(fjp: T): Long
}
implicit object ScalaForkJoin extends ForkJoinMetrics[ForkJoinPool] {
def getParallelism(fjp: ForkJoinPool) = fjp.getParallelism
def getPoolSize(fjp: ForkJoinPool) = fjp.getPoolSize.toLong
def getRunningThreadCount(fjp: ForkJoinPool) = fjp.getActiveThreadCount.toLong
def getActiveThreadCount(fjp: ForkJoinPool) = fjp.getRunningThreadCount.toLong
def getQueuedTaskCount(fjp: ForkJoinPool) = fjp.getQueuedTaskCount
def getQueuedSubmissionCount(fjp: ForkJoinPool) = fjp.getQueuedSubmissionCount
}
implicit object JavaForkJoin extends ForkJoinMetrics[JavaForkJoinPool] {
def getParallelism(fjp: JavaForkJoinPool) = fjp.getParallelism
def getPoolSize(fjp: JavaForkJoinPool) = fjp.getPoolSize.toLong
def getRunningThreadCount(fjp: JavaForkJoinPool) = fjp.getActiveThreadCount.toLong
def getActiveThreadCount(fjp: JavaForkJoinPool) = fjp.getRunningThreadCount.toLong
def getQueuedTaskCount(fjp: JavaForkJoinPool) = fjp.getQueuedTaskCount
def getQueuedSubmissionCount(fjp: JavaForkJoinPool) = fjp.getQueuedSubmissionCount
}
}
abstract class ForkJoinPoolMetrics(instrumentFactory: InstrumentFactory) extends GenericEntityRecorder(instrumentFactory) {
def paralellism: MinMaxCounter
def poolSize: Gauge
def activeThreads: Gauge
def runningThreads: Gauge
def queuedTaskCount: Gauge
def queuedSubmissionCount: Gauge
}
object ForkJoinPoolMetrics {
def factory[T: ForkJoinMetrics](fjp: T, categoryName: String) = new EntityRecorderFactory[ForkJoinPoolMetrics] {
val forkJoinMetrics = implicitly[ForkJoinMetrics[T]]
def category: String = categoryName
def createRecorder(instrumentFactory: InstrumentFactory) = new ForkJoinPoolMetrics(instrumentFactory) {
val paralellism = minMaxCounter("parallelism")
paralellism.increment(forkJoinMetrics.getParallelism(fjp)) // Steady value.
val poolSize = gauge("pool-size", forkJoinMetrics.getPoolSize(fjp))
val activeThreads = gauge("active-threads", forkJoinMetrics.getActiveThreadCount(fjp))
val runningThreads = gauge("running-threads", forkJoinMetrics.getRunningThreadCount(fjp))
val queuedTaskCount = gauge("queued-task-count", forkJoinMetrics.getQueuedTaskCount(fjp))
val queuedSubmissionCount = gauge("queued-submission-count", forkJoinMetrics.getQueuedSubmissionCount(fjp))
}
}
}
class ThreadPoolExecutorMetrics(tpe: ThreadPoolExecutor, instrumentFactory: InstrumentFactory) extends GenericEntityRecorder(instrumentFactory) {
val corePoolSize = gauge("core-pool-size", tpe.getCorePoolSize.toLong)
val maxPoolSize = gauge("max-pool-size", tpe.getMaximumPoolSize.toLong)
val poolSize = gauge("pool-size", tpe.getPoolSize.toLong)
val activeThreads = gauge("active-threads", tpe.getActiveCount.toLong)
val processedTasks = gauge("processed-tasks", DifferentialValueCollector(() ⇒ {
tpe.getTaskCount
}))
}
object ThreadPoolExecutorMetrics {
def factory(tpe: ThreadPoolExecutor, cat: String) = new EntityRecorderFactory[ThreadPoolExecutorMetrics] {
def category: String = cat
def createRecorder(instrumentFactory: InstrumentFactory) = new ThreadPoolExecutorMetrics(tpe, instrumentFactory)
}
}
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