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author | Diego <diegolparra@gmail.com> | 2014-06-24 23:35:14 -0300 |
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committer | Diego <diegolparra@gmail.com> | 2014-07-21 17:13:28 -0300 |
commit | 5c141733ad39cf2730cf34dc8f3f4a82f0c1b516 (patch) | |
tree | ab2830795cacae80aa232e41ed224534572ba678 /kamon-system-metrics/src/main/scala/kamon/metrics/MemoryMetrics.scala | |
parent | a96f6dadd5f77271672215e731b842ce785954f4 (diff) | |
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! kamon-system-metrics: introducing System and JVM metrics module
Diffstat (limited to 'kamon-system-metrics/src/main/scala/kamon/metrics/MemoryMetrics.scala')
-rw-r--r-- | kamon-system-metrics/src/main/scala/kamon/metrics/MemoryMetrics.scala | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/kamon-system-metrics/src/main/scala/kamon/metrics/MemoryMetrics.scala b/kamon-system-metrics/src/main/scala/kamon/metrics/MemoryMetrics.scala new file mode 100644 index 00000000..4f6cb1cd --- /dev/null +++ b/kamon-system-metrics/src/main/scala/kamon/metrics/MemoryMetrics.scala @@ -0,0 +1,96 @@ +/* + * ========================================================================================= + * 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.metrics + +import akka.actor.ActorSystem +import com.typesafe.config.Config +import kamon.metric._ +import kamon.metric.instrument.Gauge.CurrentValueCollector +import kamon.metric.instrument.{ Gauge, Histogram } +import kamon.system.SigarExtensionProvider +import org.hyperic.sigar.Mem + +case class MemoryMetrics(name: String) extends MetricGroupIdentity { + val category = MemoryMetrics +} + +object MemoryMetrics extends MetricGroupCategory { + val name = "memory" + + case object Used extends MetricIdentity { val name = "used" } + case object Free extends MetricIdentity { val name = "free" } + case object Buffer extends MetricIdentity { val name = "buffer" } + case object Cache extends MetricIdentity { val name = "cache" } + case object SwapUsed extends MetricIdentity { val name = "swap-used" } + case object SwapFree extends MetricIdentity { val name = "swap-free" } + + case class MemoryMetricRecorder(used: Gauge, free: Gauge, buffer: Gauge, cache: Gauge, swapUsed: Gauge, swapFree: Gauge) + extends MetricGroupRecorder { + + def collect(context: CollectionContext): MetricGroupSnapshot = { + MemoryMetricSnapshot(used.collect(context), free.collect(context), buffer.collect(context), cache.collect(context), swapUsed.collect(context), swapFree.collect(context)) + } + + def cleanup: Unit = {} + } + + case class MemoryMetricSnapshot(used: Histogram.Snapshot, free: Histogram.Snapshot, buffer: Histogram.Snapshot, cache: Histogram.Snapshot, swapUsed: Histogram.Snapshot, swapFree: Histogram.Snapshot) + extends MetricGroupSnapshot { + + type GroupSnapshotType = MemoryMetricSnapshot + + def merge(that: GroupSnapshotType, context: CollectionContext): GroupSnapshotType = { + MemoryMetricSnapshot(used.merge(that.used, context), free.merge(that.free, context), buffer.merge(that.buffer, context), cache.merge(that.cache, context), swapUsed.merge(that.swapUsed, context), swapFree.merge(that.swapFree, context)) + } + + lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map( + Used -> used, + Free -> free, + Buffer -> buffer, + Cache -> cache, + SwapUsed -> swapUsed, + SwapFree -> swapFree) + } + + val Factory = new MetricGroupFactory with SigarExtensionProvider { + def mem = sigar.getMem + def swap = sigar.getSwap + + type GroupRecorder = MemoryMetricRecorder + + def create(config: Config, system: ActorSystem): GroupRecorder = { + val settings = config.getConfig("precision.system.memory") + + val usedConfig = settings.getConfig("used") + val freeConfig = settings.getConfig("free") + val bufferConfig = settings.getConfig("buffer") + val cacheConfig = settings.getConfig("cache") + val swapUsedConfig = settings.getConfig("swap-used") + val swapFreeConfig = settings.getConfig("swap-free") + + new MemoryMetricRecorder( + Gauge.fromConfig(usedConfig, system)(() ⇒ mem.getUsed), + Gauge.fromConfig(freeConfig, system)(() ⇒ mem.getFree), + Gauge.fromConfig(bufferConfig, system)(() ⇒ swap.getUsed), + Gauge.fromConfig(cacheConfig, system)(() ⇒ swap.getFree), + Gauge.fromConfig(swapUsedConfig, system)(collectBuffer(mem)), + Gauge.fromConfig(swapFreeConfig, system)(collectCache(mem))) + } + + private def collectBuffer(mem: Mem) = () ⇒ if (mem.getUsed() != mem.getActualUsed()) mem.getActualUsed() else 0L + private def collectCache(mem: Mem) = () ⇒ if (mem.getFree() != mem.getActualFree()) mem.getActualFree() else 0L + } +}
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