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/* =========================================================================================
* Copyright © 2013-2014 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.metric
import java.lang.management.ManagementFactory
import com.typesafe.config.ConfigFactory
import kamon.system.jmx.GarbageCollectionMetrics
import kamon.testkit.BaseKamonSpec
import scala.collection.JavaConverters._
class SystemMetricsSpec extends BaseKamonSpec("system-metrics-spec") with RedirectLogging {
override lazy val config =
ConfigFactory.parseString(
"""
|kamon.metric {
| tick-interval = 1 hour
|}
|
|akka {
| extensions = ["kamon.system.SystemMetrics"]
|}
""".stripMargin)
override protected def beforeAll(): Unit =
Thread.sleep(2000) // Give some room to the recorders to store some values.
"the Kamon System Metrics module" should {
"record user, system, wait, idle and stolen CPU metrics" in {
val cpuMetrics = takeSnapshotOf("cpu", "system-metric")
cpuMetrics.histogram("cpu-user").get.numberOfMeasurements should be > 0L
cpuMetrics.histogram("cpu-system").get.numberOfMeasurements should be > 0L
cpuMetrics.histogram("cpu-wait").get.numberOfMeasurements should be > 0L
cpuMetrics.histogram("cpu-idle").get.numberOfMeasurements should be > 0L
cpuMetrics.histogram("cpu-stolen").get.numberOfMeasurements should be > 0L
}
"record count and time garbage collection metrics" in {
val availableGarbageCollectors = ManagementFactory.getGarbageCollectorMXBeans.asScala.filter(_.isValid)
for (collectorName ← availableGarbageCollectors) {
val sanitizedName = GarbageCollectionMetrics.sanitizeCollectorName(collectorName.getName)
val collectorMetrics = takeSnapshotOf(s"$sanitizedName-garbage-collector", "system-metric")
collectorMetrics.gauge("garbage-collection-count").get.numberOfMeasurements should be > 0L
collectorMetrics.gauge("garbage-collection-time").get.numberOfMeasurements should be > 0L
}
}
"record used, max and committed heap and non-heap metrics" in {
val memoryMetrics = takeSnapshotOf("jmx-memory", "system-metric")
memoryMetrics.gauge("heap-used").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("heap-max").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("heap-committed").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("non-heap-used").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("non-heap-max").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("non-heap-committed").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("direct-buffer-pool-count").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("direct-buffer-pool-used").get.numberOfMeasurements should be > 0L
memoryMetrics.gauge("direct-buffer-pool-capacity").get.numberOfMeasurements should be > 0L
}
"record correctly updatable values for heap metrics" in {
Thread.sleep(3000)
val data = new Array[Byte](20 * 1024 * 1024) // 20 Mb of data
Thread.sleep(3000)
val memoryMetrics = takeSnapshotOf("jmx-memory", "system-metric")
val heapUsed = memoryMetrics.gauge("heap-used").get
heapUsed.max should be > heapUsed.min
data.size should be > 0 // Just for data usage
}
"record daemon, count and peak jvm threads metrics" in {
val threadsMetrics = takeSnapshotOf("threads", "system-metric")
threadsMetrics.gauge("daemon-thread-count").get.numberOfMeasurements should be > 0L
threadsMetrics.gauge("peak-thread-count").get.numberOfMeasurements should be > 0L
threadsMetrics.gauge("thread-count").get.numberOfMeasurements should be > 0L
}
"record loaded, unloaded and current class loading metrics" in {
val classLoadingMetrics = takeSnapshotOf("class-loading", "system-metric")
classLoadingMetrics.gauge("classes-loaded").get.numberOfMeasurements should be > 0L
classLoadingMetrics.gauge("classes-unloaded").get.numberOfMeasurements should be > 0L
classLoadingMetrics.gauge("classes-currently-loaded").get.numberOfMeasurements should be > 0L
}
"record reads, writes, queue time and service time file system metrics" in {
val fileSystemMetrics = takeSnapshotOf("file-system", "system-metric")
fileSystemMetrics.histogram("file-system-reads").get.numberOfMeasurements should be > 0L
fileSystemMetrics.histogram("file-system-writes").get.numberOfMeasurements should be > 0L
}
"record 1 minute, 5 minutes and 15 minutes metrics load average metrics" in {
val loadAverage = takeSnapshotOf("load-average", "system-metric")
loadAverage.histogram("one-minute").get.numberOfMeasurements should be > 0L
loadAverage.histogram("five-minutes").get.numberOfMeasurements should be > 0L
loadAverage.histogram("fifteen-minutes").get.numberOfMeasurements should be > 0L
}
"record used, free, swap used, swap free system memory metrics" in {
val memoryMetrics = takeSnapshotOf("memory", "system-metric")
memoryMetrics.histogram("memory-used").get.numberOfMeasurements should be > 0L
memoryMetrics.histogram("memory-free").get.numberOfMeasurements should be > 0L
memoryMetrics.histogram("swap-used").get.numberOfMeasurements should be > 0L
memoryMetrics.histogram("swap-free").get.numberOfMeasurements should be > 0L
}
"record rxBytes, txBytes, rxErrors, txErrors, rxDropped, txDropped network metrics" in {
val networkMetrics = takeSnapshotOf("network", "system-metric")
networkMetrics.histogram("tx-bytes").get.numberOfMeasurements should be > 0L
networkMetrics.histogram("rx-bytes").get.numberOfMeasurements should be > 0L
networkMetrics.histogram("tx-errors").get.numberOfMeasurements should be > 0L
networkMetrics.histogram("rx-errors").get.numberOfMeasurements should be > 0L
networkMetrics.histogram("tx-dropped").get.numberOfMeasurements should be > 0L
networkMetrics.histogram("rx-dropped").get.numberOfMeasurements should be > 0L
}
"record system and user CPU percentage for the application process" in {
val processCpuMetrics = takeSnapshotOf("process-cpu", "system-metric")
processCpuMetrics.histogram("process-user-cpu").get.numberOfMeasurements should be > 0L
processCpuMetrics.histogram("process-system-cpu").get.numberOfMeasurements should be > 0L
processCpuMetrics.histogram("process-cpu").get.numberOfMeasurements should be > 0L
}
"record the open files for the application process" in {
val openFilesMetrics = takeSnapshotOf("ulimit", "system-metric")
openFilesMetrics.histogram("open-files").get.numberOfMeasurements should be > 0L
}
"record Context Switches Global, Voluntary and Non Voluntary metrics when running on Linux" in {
if (isLinux) {
val contextSwitchesMetrics = takeSnapshotOf("context-switches", "system-metric")
contextSwitchesMetrics.histogram("context-switches-process-voluntary").get.numberOfMeasurements should be > 0L
contextSwitchesMetrics.histogram("context-switches-process-non-voluntary").get.numberOfMeasurements should be > 0L
contextSwitchesMetrics.histogram("context-switches-global").get.numberOfMeasurements should be > 0L
}
}
}
def isLinux: Boolean =
System.getProperty("os.name").indexOf("Linux") != -1
}
|
