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/**
* Copyright 2018, OpenCensus Authors
*
* 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.
*/
import { MeasureUnit } from '../stats/types';
import { LabelKey, MetricProducer } from './export/types';
import { DerivedGauge } from './gauges/derived-gauge';
import { Gauge } from './gauges/gauge';
/**
* Creates and manages application's set of metrics.
*/
export declare class MetricRegistry {
private registeredMetrics;
private metricProducer;
private static readonly NAME;
private static readonly DESCRIPTION;
private static readonly UNIT;
private static readonly LABEL_KEY;
private static readonly LABEL_KEYS;
constructor();
/**
* Builds a new Int64 gauge to be added to the registry. This is more
* convenient form when you want to manually increase and decrease values as
* per your service requirements.
*
* @param {string} name The name of the metric.
* @param {string} description The description of the metric.
* @param {MeasureUnit} unit The unit of the metric.
* @param {LabelKey[]} labelKeys The list of the label keys.
* @returns {Gauge} A Int64 Gauge metric.
*/
addInt64Gauge(name: string, description: string, unit: MeasureUnit, labelKeys: LabelKey[]): Gauge;
/**
* Builds a new double gauge to be added to the registry. This is more
* convenient form when you want to manually increase and decrease values as
* per your service requirements.
*
* @param {string} name The name of the metric.
* @param {string} description The description of the metric.
* @param {MeasureUnit} unit The unit of the metric.
* @param {LabelKey[]} labelKeys The list of the label keys.
* @returns {Gauge} A Double Gauge metric.
*/
addDoubleGauge(name: string, description: string, unit: MeasureUnit, labelKeys: LabelKey[]): Gauge;
/**
* Builds a new derived Int64 gauge to be added to the registry. This is more
* convenient form when you want to manually increase and decrease values as
* per your service requirements.
*
* @param {string} name The name of the metric.
* @param {string} description The description of the metric.
* @param {MeasureUnit} unit The unit of the metric.
* @param {LabelKey[]} labelKeys The list of the label keys.
* @returns {DerivedGauge} A Int64 DerivedGauge metric.
*/
addDerivedInt64Gauge(name: string, description: string, unit: MeasureUnit, labelKeys: LabelKey[]): DerivedGauge;
/**
* Builds a new derived double gauge to be added to the registry. This is more
* convenient form when you want to manually increase and decrease values as
* per your service requirements.
*
* @param {string} name The name of the metric.
* @param {string} description The description of the metric.
* @param {MeasureUnit} unit The unit of the metric.
* @param {LabelKey[]} labelKeys The list of the label keys.
* @returns {DerivedGauge} A Double DerivedGauge metric.
*/
addDerivedDoubleGauge(name: string, description: string, unit: MeasureUnit, labelKeys: LabelKey[]): DerivedGauge;
/**
* Registers metric to register.
*
* @param {string} name The name of the metric.
* @param {Meter} meter The metric to register.
*/
private registerMetric;
/**
* Gets a metric producer for registry.
*
* @returns {MetricProducer} The metric producer.
*/
getMetricProducer(): MetricProducer;
}