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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.metric
import kamon.metric.instrument.UnitOfMeasurement
/**
* MetricKeys are used to identify a given metric in entity recorders and snapshots.
*/
sealed trait MetricKey {
def name: String
def unitOfMeasurement: UnitOfMeasurement
}
/**
* MetricKey for all Histogram-based metrics.
*/
private[kamon] case class HistogramKey(name: String, unitOfMeasurement: UnitOfMeasurement) extends MetricKey
/**
* MetricKey for all MinMaxCounter-based metrics.
*/
private[kamon] case class MinMaxCounterKey(name: String, unitOfMeasurement: UnitOfMeasurement) extends MetricKey
/**
* MetricKey for all Gauge-based metrics.
*/
private[kamon] case class GaugeKey(name: String, unitOfMeasurement: UnitOfMeasurement) extends MetricKey
/**
* MetricKey for all Counter-based metrics.
*/
private[kamon] case class CounterKey(name: String, unitOfMeasurement: UnitOfMeasurement) extends MetricKey
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