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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.system.jmx
import java.lang.management.ManagementFactory
import kamon.metric.GenericEntityRecorder
import kamon.metric.instrument.{ Memory, InstrumentFactory }
/**
* Heap Memory metrics, as reported by JMX:
* - @see [[http://docs.oracle.com/javase/7/docs/api/java/lang/management/MemoryMXBean.html "MemoryMXBean"]]
*/
class HeapMemoryMetrics(instrumentFactory: InstrumentFactory) extends GenericEntityRecorder(instrumentFactory) {
val memoryBean = ManagementFactory.getMemoryMXBean
def nonHeapUsage = memoryBean.getHeapMemoryUsage
gauge("heap-used", Memory.Bytes, () ⇒ {
nonHeapUsage.getUsed
})
gauge("heap-max", Memory.Bytes, () ⇒ {
nonHeapUsage.getMax
})
gauge("heap-committed", Memory.Bytes, () ⇒ {
nonHeapUsage.getCommitted
})
}
object HeapMemoryMetrics extends JmxSystemMetricRecorderCompanion("heap-memory") {
def apply(instrumentFactory: InstrumentFactory): HeapMemoryMetrics =
new HeapMemoryMetrics(instrumentFactory)
}
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