@opentelemetry/api-metrics - npm Package Compare versions

Comparing version 0.27.0 to 0.28.0

build/esm/index.d.ts

@@ -6,3 +6,2 @@ export * from './NoopMeter';
 export * from './types/Metric';
-export * from './types/Observation';
 export * from './types/ObservableResult';
@@ -9,0 +8,0 @@ import { MetricsAPI } from './api/metrics';

build/esm/index.js

@@ -21,3 +21,2 @@ /*
 export * from './types/Metric';
-export * from './types/Observation';
 export * from './types/ObservableResult';
@@ -24,0 +23,0 @@ import { MetricsAPI } from './api/metrics';

build/esm/NoopMeter.d.ts

 import { Meter } from './types/Meter';
-import { MetricOptions, Attributes, Counter, Histogram, ObservableGauge, UpDownCounter, ObservableBase, ObservableCounter, ObservableUpDownCounter } from './types/Metric';
-import { ObservableResult } from './types/ObservableResult';
-import { Observation } from './types/Observation';
+import { MetricOptions, MetricAttributes, Counter, Histogram, UpDownCounter, ObservableCallback } from './types/Metric';
 /**
@@ -32,20 +30,20 @@ * NoopMeter is a noop implementation of the {@link Meter} interface. It reuses
      * @param name the name of the metric.
+     * @param callback the observable gauge callback
      * @param [options] the metric options.
-     * @param [callback] the observable gauge callback
      */
-    createObservableGauge(_name: string, _options?: MetricOptions, _callback?: (observableResult: ObservableResult) => void): ObservableGauge;
+    createObservableGauge(_name: string, _callback: ObservableCallback, _options?: MetricOptions): void;
     /**
      * Returns a constant noop observable counter.
      * @param name the name of the metric.
+     * @param callback the observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the observable counter callback
      */
-    createObservableCounter(_name: string, _options?: MetricOptions, _callback?: (observableResult: ObservableResult) => void): ObservableCounter;
+    createObservableCounter(_name: string, _callback: ObservableCallback, _options?: MetricOptions): void;
     /**
      * Returns a constant noop up down observable counter.
      * @param name the name of the metric.
+     * @param callback the up down observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the up down observable counter callback
      */
-    createObservableUpDownCounter(_name: string, _options?: MetricOptions, _callback?: (observableResult: ObservableResult) => void): ObservableUpDownCounter;
+    createObservableUpDownCounter(_name: string, _callback: ObservableCallback, _options?: MetricOptions): void;
 }
@@ -55,13 +53,10 @@ export declare class NoopMetric {
 export declare class NoopCounterMetric extends NoopMetric implements Counter {
-    add(_value: number, _attributes: Attributes): void;
+    add(_value: number, _attributes: MetricAttributes): void;
 }
 export declare class NoopUpDownCounterMetric extends NoopMetric implements UpDownCounter {
-    add(_value: number, _attributes: Attributes): void;
+    add(_value: number, _attributes: MetricAttributes): void;
 }
 export declare class NoopHistogramMetric extends NoopMetric implements Histogram {
-    record(_value: number, _attributes: Attributes): void;
+    record(_value: number, _attributes: MetricAttributes): void;
 }
-export declare class NoopObservableBaseMetric extends NoopMetric implements ObservableBase {
-    observation(): Observation;
-}
 export declare const NOOP_METER: NoopMeter;
@@ -71,5 +66,2 @@ export declare const NOOP_COUNTER_METRIC: NoopCounterMetric;
 export declare const NOOP_UP_DOWN_COUNTER_METRIC: NoopUpDownCounterMetric;
-export declare const NOOP_OBSERVABLE_COUNTER_METRIC: NoopObservableBaseMetric;
-export declare const NOOP_OBSERVABLE_GAUGE_METRIC: NoopObservableBaseMetric;
-export declare const NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC: NoopObservableBaseMetric;
 //# sourceMappingURL=NoopMeter.d.ts.map

build/esm/NoopMeter.js

@@ -65,26 +65,20 @@ /*
      * @param name the name of the metric.
+     * @param callback the observable gauge callback
      * @param [options] the metric options.
-     * @param [callback] the observable gauge callback
      */
-    NoopMeter.prototype.createObservableGauge = function (_name, _options, _callback) {
-        return NOOP_OBSERVABLE_GAUGE_METRIC;
-    };
+    NoopMeter.prototype.createObservableGauge = function (_name, _callback, _options) { };
     /**
      * Returns a constant noop observable counter.
      * @param name the name of the metric.
+     * @param callback the observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the observable counter callback
      */
-    NoopMeter.prototype.createObservableCounter = function (_name, _options, _callback) {
-        return NOOP_OBSERVABLE_COUNTER_METRIC;
-    };
+    NoopMeter.prototype.createObservableCounter = function (_name, _callback, _options) { };
     /**
      * Returns a constant noop up down observable counter.
      * @param name the name of the metric.
+     * @param callback the up down observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the up down observable counter callback
      */
-    NoopMeter.prototype.createObservableUpDownCounter = function (_name, _options, _callback) {
-        return NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC;
-    };
+    NoopMeter.prototype.createObservableUpDownCounter = function (_name, _callback, _options) { };
     return NoopMeter;
@@ -126,16 +120,2 @@ }());
 export { NoopHistogramMetric };
-var NoopObservableBaseMetric = /** @class */ (function (_super) {
-    __extends(NoopObservableBaseMetric, _super);
-    function NoopObservableBaseMetric() {
-        return _super !== null && _super.apply(this, arguments) || this;
-    }
-    NoopObservableBaseMetric.prototype.observation = function () {
-        return {
-            observable: this,
-            value: 0,
-        };
-    };
-    return NoopObservableBaseMetric;
-}(NoopMetric));
-export { NoopObservableBaseMetric };
 export var NOOP_METER = new NoopMeter();
@@ -146,6 +126,2 @@ // Synchronous instruments
 export var NOOP_UP_DOWN_COUNTER_METRIC = new NoopUpDownCounterMetric();
-// Asynchronous instruments
-export var NOOP_OBSERVABLE_COUNTER_METRIC = new NoopObservableBaseMetric();
-export var NOOP_OBSERVABLE_GAUGE_METRIC = new NoopObservableBaseMetric();
-export var NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC = new NoopObservableBaseMetric();
 //# sourceMappingURL=NoopMeter.js.map

build/esm/types/Meter.d.ts

@@ -1,3 +0,3 @@
-import { MetricOptions, Counter, Histogram, ObservableGauge, UpDownCounter, ObservableCounter, ObservableUpDownCounter } from './Metric';
-import { ObservableResult } from './ObservableResult';
+import { CounterOptions, HistogramOptions, UpDownCounterOptions } from '..';
+import { Counter, Histogram, ObservableCallback, ObservableCounterOptions, ObservableGaugeOptions, ObservableUpDownCounterOptions, UpDownCounter } from './Metric';
 /**
@@ -25,3 +25,3 @@ * An interface describes additional metadata of a meter.
      */
-    createHistogram(name: string, options?: MetricOptions): Histogram;
+    createHistogram(name: string, options?: HistogramOptions): Histogram;
     /**
@@ -34,3 +34,3 @@ * Creates a new `Counter` metric. Generally, this kind of metric when the
      */
-    createCounter(name: string, options?: MetricOptions): Counter;
+    createCounter(name: string, options?: CounterOptions): Counter;
     /**
@@ -53,25 +53,25 @@ * Creates a new `UpDownCounter` metric. UpDownCounter is a synchronous
      */
-    createUpDownCounter(name: string, options?: MetricOptions): UpDownCounter;
+    createUpDownCounter(name: string, options?: UpDownCounterOptions): UpDownCounter;
     /**
      * Creates a new `ObservableGauge` metric.
      * @param name the name of the metric.
+     * @param callback the observable callback
      * @param [options] the metric options.
-     * @param [callback] the observable callback
      */
-    createObservableGauge(name: string, options?: MetricOptions, callback?: (observableResult: ObservableResult) => void): ObservableGauge;
+    createObservableGauge(name: string, callback: ObservableCallback, options?: ObservableGaugeOptions): void;
     /**
      * Creates a new `ObservableCounter` metric.
      * @param name the name of the metric.
+     * @param callback the observable callback
      * @param [options] the metric options.
-     * @param [callback] the observable callback
      */
-    createObservableCounter(name: string, options?: MetricOptions, callback?: (observableResult: ObservableResult) => void): ObservableCounter;
+    createObservableCounter(name: string, callback: ObservableCallback, options?: ObservableCounterOptions): void;
     /**
      * Creates a new `ObservableUpDownCounter` metric.
      * @param name the name of the metric.
+     * @param callback the observable callback
      * @param [options] the metric options.
-     * @param [callback] the observable callback
      */
-    createObservableUpDownCounter(name: string, options?: MetricOptions, callback?: (observableResult: ObservableResult) => void): ObservableUpDownCounter;
+    createObservableUpDownCounter(name: string, callback: ObservableCallback, options?: ObservableUpDownCounterOptions): void;
 }
 //# sourceMappingURL=Meter.d.ts.map

build/esm/types/Metric.d.ts

@@ -1,2 +0,3 @@
-import { Observation } from './Observation';
+import { Context } from '@opentelemetry/api';
+import { ObservableResult } from './ObservableResult';
 /**
@@ -6,4 +7,2 @@ * Options needed for metric creation
 export interface MetricOptions {
-    /** The name of the component that reports the Metric. */
-    component?: string;
     /**
@@ -16,13 +15,6 @@ * The description of the Metric.
      * The unit of the Metric values.
-     * @default '1'
+     * @default ''
      */
     unit?: string;
-    /** The map of constant attributes for the Metric. */
-    constantAttributes?: Map<string, string>;
     /**
-     * Indicates the metric is a verbose metric that is disabled by default
-     * @default false
-     */
-    disabled?: boolean;
-    /**
      * Indicates the type of the recorded value.
@@ -32,11 +24,9 @@ * @default {@link ValueType.DOUBLE}
     valueType?: ValueType;
-    /**
-     * Boundaries optional for histogram
-     */
-    boundaries?: number[];
-    /**
-     * Aggregation Temporality of metric
-     */
-    aggregationTemporality?: AggregationTemporality;
 }
+export declare type CounterOptions = MetricOptions;
+export declare type UpDownCounterOptions = MetricOptions;
+export declare type ObservableGaugeOptions = MetricOptions;
+export declare type ObservableCounterOptions = MetricOptions;
+export declare type ObservableUpDownCounterOptions = MetricOptions;
+export declare type HistogramOptions = MetricOptions;
 /** The Type of value. It describes how the data is reported. */
@@ -47,8 +37,2 @@ export declare enum ValueType {
 }
-/** The kind of aggregator. */
-export declare enum AggregationTemporality {
-    AGGREGATION_TEMPORALITY_UNSPECIFIED = 0,
-    AGGREGATION_TEMPORALITY_DELTA = 1,
-    AGGREGATION_TEMPORALITY_CUMULATIVE = 2
-}
 /**
@@ -73,3 +57,3 @@ * Counter is the most common synchronous instrument. This instrument supports
      */
-    add(value: number, attributes?: Attributes): void;
+    add(value: number, attributes?: MetricAttributes, context?: Context): void;
 }
@@ -80,26 +64,20 @@ export interface UpDownCounter {
      */
-    add(value: number, attributes?: Attributes): void;
+    add(value: number, attributes?: MetricAttributes, context?: Context): void;
 }
 export interface Histogram {
     /**
-     * Records the given value to this histogram.
+     * Records a measurement. Value of the measurement must not be negative.
      */
-    record(value: number, attributes?: Attributes): void;
+    record(value: number, attributes?: MetricAttributes, context?: Context): void;
 }
-/** Base interface for the Observable metrics. */
-export interface ObservableBase {
-    observation: (value: number, attributes?: Attributes) => Observation;
-}
-/** Base interface for the ObservableGauge metrics. */
-export declare type ObservableGauge = ObservableBase;
-/** Base interface for the ObservableUpDownCounter metrics. */
-export declare type ObservableUpDownCounter = ObservableBase;
-/** Base interface for the ObservableCounter metrics. */
-export declare type ObservableCounter = ObservableBase;
 /**
  * key-value pairs passed by the user.
  */
-export declare type Attributes = {
+export declare type MetricAttributes = {
     [key: string]: string;
 };
+/**
+ * The observable callback for Observable instruments.
+ */
+export declare type ObservableCallback = (observableResult: ObservableResult) => void | Promise<void>;
 //# sourceMappingURL=Metric.d.ts.map

build/esm/types/Metric.js

@@ -22,9 +22,2 @@ /*
 })(ValueType || (ValueType = {}));
-/** The kind of aggregator. */
-export var AggregationTemporality;
-(function (AggregationTemporality) {
-    AggregationTemporality[AggregationTemporality["AGGREGATION_TEMPORALITY_UNSPECIFIED"] = 0] = "AGGREGATION_TEMPORALITY_UNSPECIFIED";
-    AggregationTemporality[AggregationTemporality["AGGREGATION_TEMPORALITY_DELTA"] = 1] = "AGGREGATION_TEMPORALITY_DELTA";
-    AggregationTemporality[AggregationTemporality["AGGREGATION_TEMPORALITY_CUMULATIVE"] = 2] = "AGGREGATION_TEMPORALITY_CUMULATIVE";
-})(AggregationTemporality || (AggregationTemporality = {}));
 //# sourceMappingURL=Metric.js.map

build/esm/types/ObservableResult.d.ts

@@ -1,2 +0,2 @@
-import { Attributes } from './Metric';
+import { MetricAttributes } from './Metric';
 /**
@@ -6,4 +6,12 @@ * Interface that is being used in callback function for Observable Metric
 export interface ObservableResult {
-    observe(value: number, attributes: Attributes): void;
+    /**
+     * Observe a measurement of the value associated with the given attributes.
+     *
+     * @param value The value to be observed.
+     * @param attributes The attributes associated with the value. If more than
+     * one values associated with the same attributes values, SDK may pick the
+     * last one or simply drop the entire observable result.
+     */
+    observe(value: number, attributes?: MetricAttributes): void;
 }
 //# sourceMappingURL=ObservableResult.d.ts.map

build/esm/version.d.ts

@@ -1,2 +0,2 @@
-export declare const VERSION = "0.27.0";
+export declare const VERSION = "0.28.0";
 //# sourceMappingURL=version.d.ts.map

build/esm/version.js

@@ -17,3 +17,3 @@ /*
 // this is autogenerated file, see scripts/version-update.js
-export var VERSION = '0.27.0';
+export var VERSION = '0.28.0';
 //# sourceMappingURL=version.js.map

build/src/api/global-utils.js

@@ -19,3 +19,3 @@ "use strict";
 exports.API_BACKWARDS_COMPATIBILITY_VERSION = exports.makeGetter = exports._global = exports.GLOBAL_METRICS_API_KEY = void 0;
-var platform_1 = require("../platform");
+const platform_1 = require("../platform");
 exports.GLOBAL_METRICS_API_KEY = Symbol.for('io.opentelemetry.js.api.metrics');
@@ -32,5 +32,3 @@ exports._global = platform_1._globalThis;
 function makeGetter(requiredVersion, instance, fallback) {
-    return function (version) {
-        return version === requiredVersion ? instance : fallback;
-    };
+    return (version) => version === requiredVersion ? instance : fallback;
 }
@@ -37,0 +35,0 @@ exports.makeGetter = makeGetter;

build/src/api/metrics.js

@@ -19,13 +19,12 @@ "use strict";
 exports.MetricsAPI = void 0;
-var NoopMeterProvider_1 = require("../NoopMeterProvider");
-var global_utils_1 = require("./global-utils");
+const NoopMeterProvider_1 = require("../NoopMeterProvider");
+const global_utils_1 = require("./global-utils");
 /**
  * Singleton object which represents the entry point to the OpenTelemetry Metrics API
  */
-var MetricsAPI = /** @class */ (function () {
+class MetricsAPI {
     /** Empty private constructor prevents end users from constructing a new instance of the API */
-    function MetricsAPI() {
-    }
+    constructor() { }
     /** Get the singleton instance of the Metrics API */
-    MetricsAPI.getInstance = function () {
+    static getInstance() {
         if (!this._instance) {
@@ -35,7 +34,7 @@ this._instance = new MetricsAPI();
         return this._instance;
-    };
+    }
     /**
      * Set the current global meter. Returns the initialized global meter provider.
      */
-    MetricsAPI.prototype.setGlobalMeterProvider = function (provider) {
+    setGlobalMeterProvider(provider) {
         if (global_utils_1._global[global_utils_1.GLOBAL_METRICS_API_KEY]) {
@@ -45,25 +44,24 @@ // global meter provider has already been set
         }
-        global_utils_1._global[global_utils_1.GLOBAL_METRICS_API_KEY] = global_utils_1.makeGetter(global_utils_1.API_BACKWARDS_COMPATIBILITY_VERSION, provider, NoopMeterProvider_1.NOOP_METER_PROVIDER);
+        global_utils_1._global[global_utils_1.GLOBAL_METRICS_API_KEY] = (0, global_utils_1.makeGetter)(global_utils_1.API_BACKWARDS_COMPATIBILITY_VERSION, provider, NoopMeterProvider_1.NOOP_METER_PROVIDER);
         return provider;
-    };
+    }
     /**
      * Returns the global meter provider.
      */
-    MetricsAPI.prototype.getMeterProvider = function () {
+    getMeterProvider() {
         var _a, _b;
         return ((_b = (_a = global_utils_1._global[global_utils_1.GLOBAL_METRICS_API_KEY]) === null || _a === void 0 ? void 0 : _a.call(global_utils_1._global, global_utils_1.API_BACKWARDS_COMPATIBILITY_VERSION)) !== null && _b !== void 0 ? _b : NoopMeterProvider_1.NOOP_METER_PROVIDER);
-    };
+    }
     /**
      * Returns a meter from the global meter provider.
      */
-    MetricsAPI.prototype.getMeter = function (name, version, options) {
+    getMeter(name, version, options) {
         return this.getMeterProvider().getMeter(name, version, options);
-    };
+    }
     /** Remove the global meter provider */
-    MetricsAPI.prototype.disable = function () {
+    disable() {
         delete global_utils_1._global[global_utils_1.GLOBAL_METRICS_API_KEY];
-    };
-    return MetricsAPI;
-}());
+    }
+}
 exports.MetricsAPI = MetricsAPI;
 //# sourceMappingURL=metrics.js.map

build/src/index.d.ts

@@ -6,3 +6,2 @@ export * from './NoopMeter';
 export * from './types/Metric';
-export * from './types/Observation';
 export * from './types/ObservableResult';
@@ -9,0 +8,0 @@ import { MetricsAPI } from './api/metrics';

build/src/index.js

@@ -34,7 +34,6 @@ "use strict";
 __exportStar(require("./types/Metric"), exports);
-__exportStar(require("./types/Observation"), exports);
 __exportStar(require("./types/ObservableResult"), exports);
-var metrics_1 = require("./api/metrics");
+const metrics_1 = require("./api/metrics");
 /** Entrypoint for metrics API */
 exports.metrics = metrics_1.MetricsAPI.getInstance();
 //# sourceMappingURL=index.js.map

build/src/NoopMeter.d.ts

 import { Meter } from './types/Meter';
-import { MetricOptions, Attributes, Counter, Histogram, ObservableGauge, UpDownCounter, ObservableBase, ObservableCounter, ObservableUpDownCounter } from './types/Metric';
-import { ObservableResult } from './types/ObservableResult';
-import { Observation } from './types/Observation';
+import { MetricOptions, MetricAttributes, Counter, Histogram, UpDownCounter, ObservableCallback } from './types/Metric';
 /**
@@ -32,20 +30,20 @@ * NoopMeter is a noop implementation of the {@link Meter} interface. It reuses
      * @param name the name of the metric.
+     * @param callback the observable gauge callback
      * @param [options] the metric options.
-     * @param [callback] the observable gauge callback
      */
-    createObservableGauge(_name: string, _options?: MetricOptions, _callback?: (observableResult: ObservableResult) => void): ObservableGauge;
+    createObservableGauge(_name: string, _callback: ObservableCallback, _options?: MetricOptions): void;
     /**
      * Returns a constant noop observable counter.
      * @param name the name of the metric.
+     * @param callback the observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the observable counter callback
      */
-    createObservableCounter(_name: string, _options?: MetricOptions, _callback?: (observableResult: ObservableResult) => void): ObservableCounter;
+    createObservableCounter(_name: string, _callback: ObservableCallback, _options?: MetricOptions): void;
     /**
      * Returns a constant noop up down observable counter.
      * @param name the name of the metric.
+     * @param callback the up down observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the up down observable counter callback
      */
-    createObservableUpDownCounter(_name: string, _options?: MetricOptions, _callback?: (observableResult: ObservableResult) => void): ObservableUpDownCounter;
+    createObservableUpDownCounter(_name: string, _callback: ObservableCallback, _options?: MetricOptions): void;
 }
@@ -55,13 +53,10 @@ export declare class NoopMetric {
 export declare class NoopCounterMetric extends NoopMetric implements Counter {
-    add(_value: number, _attributes: Attributes): void;
+    add(_value: number, _attributes: MetricAttributes): void;
 }
 export declare class NoopUpDownCounterMetric extends NoopMetric implements UpDownCounter {
-    add(_value: number, _attributes: Attributes): void;
+    add(_value: number, _attributes: MetricAttributes): void;
 }
 export declare class NoopHistogramMetric extends NoopMetric implements Histogram {
-    record(_value: number, _attributes: Attributes): void;
+    record(_value: number, _attributes: MetricAttributes): void;
 }
-export declare class NoopObservableBaseMetric extends NoopMetric implements ObservableBase {
-    observation(): Observation;
-}
 export declare const NOOP_METER: NoopMeter;
@@ -71,5 +66,2 @@ export declare const NOOP_COUNTER_METRIC: NoopCounterMetric;
 export declare const NOOP_UP_DOWN_COUNTER_METRIC: NoopUpDownCounterMetric;
-export declare const NOOP_OBSERVABLE_COUNTER_METRIC: NoopObservableBaseMetric;
-export declare const NOOP_OBSERVABLE_GAUGE_METRIC: NoopObservableBaseMetric;
-export declare const NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC: NoopObservableBaseMetric;
 //# sourceMappingURL=NoopMeter.d.ts.map

build/src/NoopMeter.js

@@ -17,19 +17,4 @@ "use strict";
  */
-var __extends = (this && this.__extends) || (function () {
-    var extendStatics = function (d, b) {
-        extendStatics = Object.setPrototypeOf ||
-            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
-        return extendStatics(d, b);
-    };
-    return function (d, b) {
-        if (typeof b !== "function" && b !== null)
-            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-        extendStatics(d, b);
-        function __() { this.constructor = d; }
-        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-    };
-})();
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC = exports.NOOP_OBSERVABLE_GAUGE_METRIC = exports.NOOP_OBSERVABLE_COUNTER_METRIC = exports.NOOP_UP_DOWN_COUNTER_METRIC = exports.NOOP_HISTOGRAM_METRIC = exports.NOOP_COUNTER_METRIC = exports.NOOP_METER = exports.NoopObservableBaseMetric = exports.NoopHistogramMetric = exports.NoopUpDownCounterMetric = exports.NoopCounterMetric = exports.NoopMetric = exports.NoopMeter = void 0;
+exports.NOOP_UP_DOWN_COUNTER_METRIC = exports.NOOP_HISTOGRAM_METRIC = exports.NOOP_COUNTER_METRIC = exports.NOOP_METER = exports.NoopHistogramMetric = exports.NoopUpDownCounterMetric = exports.NoopCounterMetric = exports.NoopMetric = exports.NoopMeter = void 0;
 /**
@@ -39,5 +24,4 @@ * NoopMeter is a noop implementation of the {@link Meter} interface. It reuses
  */
-var NoopMeter = /** @class */ (function () {
-    function NoopMeter() {
-    }
+class NoopMeter {
+    constructor() { }
     /**
@@ -48,5 +32,5 @@ * Returns a constant noop histogram.
      */
-    NoopMeter.prototype.createHistogram = function (_name, _options) {
+    createHistogram(_name, _options) {
         return exports.NOOP_HISTOGRAM_METRIC;
-    };
+    }
     /**
@@ -57,5 +41,5 @@ * Returns a constant noop counter.
      */
-    NoopMeter.prototype.createCounter = function (_name, _options) {
+    createCounter(_name, _options) {
         return exports.NOOP_COUNTER_METRIC;
-    };
+    }
     /**
@@ -66,82 +50,43 @@ * Returns a constant noop UpDownCounter.
      */
-    NoopMeter.prototype.createUpDownCounter = function (_name, _options) {
+    createUpDownCounter(_name, _options) {
         return exports.NOOP_UP_DOWN_COUNTER_METRIC;
-    };
+    }
     /**
      * Returns a constant noop observable gauge.
      * @param name the name of the metric.
+     * @param callback the observable gauge callback
      * @param [options] the metric options.
-     * @param [callback] the observable gauge callback
      */
-    NoopMeter.prototype.createObservableGauge = function (_name, _options, _callback) {
-        return exports.NOOP_OBSERVABLE_GAUGE_METRIC;
-    };
+    createObservableGauge(_name, _callback, _options) { }
     /**
      * Returns a constant noop observable counter.
      * @param name the name of the metric.
+     * @param callback the observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the observable counter callback
      */
-    NoopMeter.prototype.createObservableCounter = function (_name, _options, _callback) {
-        return exports.NOOP_OBSERVABLE_COUNTER_METRIC;
-    };
+    createObservableCounter(_name, _callback, _options) { }
     /**
      * Returns a constant noop up down observable counter.
      * @param name the name of the metric.
+     * @param callback the up down observable counter callback
      * @param [options] the metric options.
-     * @param [callback] the up down observable counter callback
      */
-    NoopMeter.prototype.createObservableUpDownCounter = function (_name, _options, _callback) {
-        return exports.NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC;
-    };
-    return NoopMeter;
-}());
+    createObservableUpDownCounter(_name, _callback, _options) { }
+}
 exports.NoopMeter = NoopMeter;
-var NoopMetric = /** @class */ (function () {
-    function NoopMetric() {
-    }
-    return NoopMetric;
-}());
+class NoopMetric {
+}
 exports.NoopMetric = NoopMetric;
-var NoopCounterMetric = /** @class */ (function (_super) {
-    __extends(NoopCounterMetric, _super);
-    function NoopCounterMetric() {
-        return _super !== null && _super.apply(this, arguments) || this;
-    }
-    NoopCounterMetric.prototype.add = function (_value, _attributes) { };
-    return NoopCounterMetric;
-}(NoopMetric));
+class NoopCounterMetric extends NoopMetric {
+    add(_value, _attributes) { }
+}
 exports.NoopCounterMetric = NoopCounterMetric;
-var NoopUpDownCounterMetric = /** @class */ (function (_super) {
-    __extends(NoopUpDownCounterMetric, _super);
-    function NoopUpDownCounterMetric() {
-        return _super !== null && _super.apply(this, arguments) || this;
-    }
-    NoopUpDownCounterMetric.prototype.add = function (_value, _attributes) { };
-    return NoopUpDownCounterMetric;
-}(NoopMetric));
+class NoopUpDownCounterMetric extends NoopMetric {
+    add(_value, _attributes) { }
+}
 exports.NoopUpDownCounterMetric = NoopUpDownCounterMetric;
-var NoopHistogramMetric = /** @class */ (function (_super) {
-    __extends(NoopHistogramMetric, _super);
-    function NoopHistogramMetric() {
-        return _super !== null && _super.apply(this, arguments) || this;
-    }
-    NoopHistogramMetric.prototype.record = function (_value, _attributes) { };
-    return NoopHistogramMetric;
-}(NoopMetric));
+class NoopHistogramMetric extends NoopMetric {
+    record(_value, _attributes) { }
+}
 exports.NoopHistogramMetric = NoopHistogramMetric;
-var NoopObservableBaseMetric = /** @class */ (function (_super) {
-    __extends(NoopObservableBaseMetric, _super);
-    function NoopObservableBaseMetric() {
-        return _super !== null && _super.apply(this, arguments) || this;
-    }
-    NoopObservableBaseMetric.prototype.observation = function () {
-        return {
-            observable: this,
-            value: 0,
-        };
-    };
-    return NoopObservableBaseMetric;
-}(NoopMetric));
-exports.NoopObservableBaseMetric = NoopObservableBaseMetric;
 exports.NOOP_METER = new NoopMeter();
@@ -152,6 +97,2 @@ // Synchronous instruments
 exports.NOOP_UP_DOWN_COUNTER_METRIC = new NoopUpDownCounterMetric();
-// Asynchronous instruments
-exports.NOOP_OBSERVABLE_COUNTER_METRIC = new NoopObservableBaseMetric();
-exports.NOOP_OBSERVABLE_GAUGE_METRIC = new NoopObservableBaseMetric();
-exports.NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC = new NoopObservableBaseMetric();
 //# sourceMappingURL=NoopMeter.js.map

build/src/NoopMeterProvider.js

@@ -19,3 +19,3 @@ "use strict";
 exports.NOOP_METER_PROVIDER = exports.NoopMeterProvider = void 0;
-var NoopMeter_1 = require("./NoopMeter");
+const NoopMeter_1 = require("./NoopMeter");
 /**
@@ -25,12 +25,9 @@ * An implementation of the {@link MeterProvider} which returns an impotent Meter
  */
-var NoopMeterProvider = /** @class */ (function () {
-    function NoopMeterProvider() {
+class NoopMeterProvider {
+    getMeter(_name, _version, _options) {
+        return NoopMeter_1.NOOP_METER;
     }
-    NoopMeterProvider.prototype.getMeter = function (_name, _version, _options) {
-        return NoopMeter_1.NOOP_METER;
-    };
-    return NoopMeterProvider;
-}());
+}
 exports.NoopMeterProvider = NoopMeterProvider;
 exports.NOOP_METER_PROVIDER = new NoopMeterProvider();
 //# sourceMappingURL=NoopMeterProvider.js.map

build/src/types/Meter.d.ts

@@ -1,3 +0,3 @@
-import { MetricOptions, Counter, Histogram, ObservableGauge, UpDownCounter, ObservableCounter, ObservableUpDownCounter } from './Metric';
-import { ObservableResult } from './ObservableResult';
+import { CounterOptions, HistogramOptions, UpDownCounterOptions } from '..';
+import { Counter, Histogram, ObservableCallback, ObservableCounterOptions, ObservableGaugeOptions, ObservableUpDownCounterOptions, UpDownCounter } from './Metric';
 /**
@@ -25,3 +25,3 @@ * An interface describes additional metadata of a meter.
      */
-    createHistogram(name: string, options?: MetricOptions): Histogram;
+    createHistogram(name: string, options?: HistogramOptions): Histogram;
     /**
@@ -34,3 +34,3 @@ * Creates a new `Counter` metric. Generally, this kind of metric when the
      */
-    createCounter(name: string, options?: MetricOptions): Counter;
+    createCounter(name: string, options?: CounterOptions): Counter;
     /**
@@ -53,25 +53,25 @@ * Creates a new `UpDownCounter` metric. UpDownCounter is a synchronous
      */
-    createUpDownCounter(name: string, options?: MetricOptions): UpDownCounter;
+    createUpDownCounter(name: string, options?: UpDownCounterOptions): UpDownCounter;
     /**
      * Creates a new `ObservableGauge` metric.
      * @param name the name of the metric.
+     * @param callback the observable callback
      * @param [options] the metric options.
-     * @param [callback] the observable callback
      */
-    createObservableGauge(name: string, options?: MetricOptions, callback?: (observableResult: ObservableResult) => void): ObservableGauge;
+    createObservableGauge(name: string, callback: ObservableCallback, options?: ObservableGaugeOptions): void;
     /**
      * Creates a new `ObservableCounter` metric.
      * @param name the name of the metric.
+     * @param callback the observable callback
      * @param [options] the metric options.
-     * @param [callback] the observable callback
      */
-    createObservableCounter(name: string, options?: MetricOptions, callback?: (observableResult: ObservableResult) => void): ObservableCounter;
+    createObservableCounter(name: string, callback: ObservableCallback, options?: ObservableCounterOptions): void;
     /**
      * Creates a new `ObservableUpDownCounter` metric.
      * @param name the name of the metric.
+     * @param callback the observable callback
      * @param [options] the metric options.
-     * @param [callback] the observable callback
      */
-    createObservableUpDownCounter(name: string, options?: MetricOptions, callback?: (observableResult: ObservableResult) => void): ObservableUpDownCounter;
+    createObservableUpDownCounter(name: string, callback: ObservableCallback, options?: ObservableUpDownCounterOptions): void;
 }
 //# sourceMappingURL=Meter.d.ts.map

build/src/types/Metric.d.ts

@@ -1,2 +0,3 @@
-import { Observation } from './Observation';
+import { Context } from '@opentelemetry/api';
+import { ObservableResult } from './ObservableResult';
 /**
@@ -6,4 +7,2 @@ * Options needed for metric creation
 export interface MetricOptions {
-    /** The name of the component that reports the Metric. */
-    component?: string;
     /**
@@ -16,13 +15,6 @@ * The description of the Metric.
      * The unit of the Metric values.
-     * @default '1'
+     * @default ''
      */
     unit?: string;
-    /** The map of constant attributes for the Metric. */
-    constantAttributes?: Map<string, string>;
     /**
-     * Indicates the metric is a verbose metric that is disabled by default
-     * @default false
-     */
-    disabled?: boolean;
-    /**
      * Indicates the type of the recorded value.
@@ -32,11 +24,9 @@ * @default {@link ValueType.DOUBLE}
     valueType?: ValueType;
-    /**
-     * Boundaries optional for histogram
-     */
-    boundaries?: number[];
-    /**
-     * Aggregation Temporality of metric
-     */
-    aggregationTemporality?: AggregationTemporality;
 }
+export declare type CounterOptions = MetricOptions;
+export declare type UpDownCounterOptions = MetricOptions;
+export declare type ObservableGaugeOptions = MetricOptions;
+export declare type ObservableCounterOptions = MetricOptions;
+export declare type ObservableUpDownCounterOptions = MetricOptions;
+export declare type HistogramOptions = MetricOptions;
 /** The Type of value. It describes how the data is reported. */
@@ -47,8 +37,2 @@ export declare enum ValueType {
 }
-/** The kind of aggregator. */
-export declare enum AggregationTemporality {
-    AGGREGATION_TEMPORALITY_UNSPECIFIED = 0,
-    AGGREGATION_TEMPORALITY_DELTA = 1,
-    AGGREGATION_TEMPORALITY_CUMULATIVE = 2
-}
 /**
@@ -73,3 +57,3 @@ * Counter is the most common synchronous instrument. This instrument supports
      */
-    add(value: number, attributes?: Attributes): void;
+    add(value: number, attributes?: MetricAttributes, context?: Context): void;
 }
@@ -80,26 +64,20 @@ export interface UpDownCounter {
      */
-    add(value: number, attributes?: Attributes): void;
+    add(value: number, attributes?: MetricAttributes, context?: Context): void;
 }
 export interface Histogram {
     /**
-     * Records the given value to this histogram.
+     * Records a measurement. Value of the measurement must not be negative.
      */
-    record(value: number, attributes?: Attributes): void;
+    record(value: number, attributes?: MetricAttributes, context?: Context): void;
 }
-/** Base interface for the Observable metrics. */
-export interface ObservableBase {
-    observation: (value: number, attributes?: Attributes) => Observation;
-}
-/** Base interface for the ObservableGauge metrics. */
-export declare type ObservableGauge = ObservableBase;
-/** Base interface for the ObservableUpDownCounter metrics. */
-export declare type ObservableUpDownCounter = ObservableBase;
-/** Base interface for the ObservableCounter metrics. */
-export declare type ObservableCounter = ObservableBase;
 /**
  * key-value pairs passed by the user.
  */
-export declare type Attributes = {
+export declare type MetricAttributes = {
     [key: string]: string;
 };
+/**
+ * The observable callback for Observable instruments.
+ */
+export declare type ObservableCallback = (observableResult: ObservableResult) => void | Promise<void>;
 //# sourceMappingURL=Metric.d.ts.map

build/src/types/Metric.js

@@ -18,3 +18,3 @@ "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.AggregationTemporality = exports.ValueType = void 0;
+exports.ValueType = void 0;
 /** The Type of value. It describes how the data is reported. */
@@ -26,9 +26,2 @@ var ValueType;
 })(ValueType = exports.ValueType || (exports.ValueType = {}));
-/** The kind of aggregator. */
-var AggregationTemporality;
-(function (AggregationTemporality) {
-    AggregationTemporality[AggregationTemporality["AGGREGATION_TEMPORALITY_UNSPECIFIED"] = 0] = "AGGREGATION_TEMPORALITY_UNSPECIFIED";
-    AggregationTemporality[AggregationTemporality["AGGREGATION_TEMPORALITY_DELTA"] = 1] = "AGGREGATION_TEMPORALITY_DELTA";
-    AggregationTemporality[AggregationTemporality["AGGREGATION_TEMPORALITY_CUMULATIVE"] = 2] = "AGGREGATION_TEMPORALITY_CUMULATIVE";
-})(AggregationTemporality = exports.AggregationTemporality || (exports.AggregationTemporality = {}));
 //# sourceMappingURL=Metric.js.map

build/src/types/ObservableResult.d.ts

@@ -1,2 +0,2 @@
-import { Attributes } from './Metric';
+import { MetricAttributes } from './Metric';
 /**
@@ -6,4 +6,12 @@ * Interface that is being used in callback function for Observable Metric
 export interface ObservableResult {
-    observe(value: number, attributes: Attributes): void;
+    /**
+     * Observe a measurement of the value associated with the given attributes.
+     *
+     * @param value The value to be observed.
+     * @param attributes The attributes associated with the value. If more than
+     * one values associated with the same attributes values, SDK may pick the
+     * last one or simply drop the entire observable result.
+     */
+    observe(value: number, attributes?: MetricAttributes): void;
 }
 //# sourceMappingURL=ObservableResult.d.ts.map

build/src/version.d.ts

@@ -1,2 +0,2 @@
-export declare const VERSION = "0.27.0";
+export declare const VERSION = "0.28.0";
 //# sourceMappingURL=version.d.ts.map

build/src/version.js

@@ -20,3 +20,3 @@ "use strict";
 // this is autogenerated file, see scripts/version-update.js
-exports.VERSION = '0.27.0';
+exports.VERSION = '0.28.0';
 //# sourceMappingURL=version.js.map

package.json

 {
   "name": "@opentelemetry/api-metrics",
-  "version": "0.27.0",
+  "version": "0.28.0",
   "description": "Public metrics API for OpenTelemetry",
   "main": "build/src/index.js",
   "module": "build/esm/index.js",
+  "esnext": "build/esnext/index.js",
   "types": "build/src/index.d.ts",
@@ -11,2 +12,3 @@ "browser": {
     "./build/esm/platform/index.js": "./build/esm/platform/browser/index.js",
+    "./build/esnext/platform/index.js": "./build/esnext/platform/browser/index.js",
     "./build/src/platform/index.js": "./build/src/platform/browser/index.js"
@@ -16,8 +18,9 @@ },
   "scripts": {
-    "compile": "tsc --build tsconfig.json tsconfig.esm.json",
-    "clean": "tsc --build --clean tsconfig.json tsconfig.esm.json",
+    "prepublishOnly": "npm run compile",
+    "compile": "tsc --build tsconfig.all.json",
+    "clean": "tsc --build --clean tsconfig.all.json",
     "test": "nyc ts-mocha -p tsconfig.json test/**/*.test.ts",
     "test:browser": "nyc karma start --single-run",
-    "codecov": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../",
-    "codecov:browser": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../",
+    "codecov": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../../",
+    "codecov:browser": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../../",
     "build": "npm run compile",
@@ -27,4 +30,4 @@ "lint": "eslint . --ext .ts",
     "version": "node ../../../scripts/version-update.js",
-    "watch": "tsc --build --watch tsconfig.json tsconfig.esm.json",
-    "precompile": "lerna run version --scope $(npm pkg get name) --include-filtered-dependencies",
+    "watch": "tsc --build --watch tsconfig.all.json",
+    "precompile": "lerna run version --scope $(npm pkg get name) --include-dependencies",
     "prewatch": "node ../../../scripts/version-update.js"
@@ -44,3 +47,3 @@ },
   "engines": {
-    "node": ">=8.0.0"
+    "node": ">=8.12.0"
   },
@@ -51,2 +54,5 @@ "files": [
     "build/esm/**/*.d.ts",
+    "build/esnext/**/*.js",
+    "build/esnext/**/*.js.map",
+    "build/esnext/**/*.d.ts",
     "build/src/**/*.js",
@@ -62,9 +68,12 @@ "build/src/**/*.js.map",
   },
+  "dependencies": {
+    "@opentelemetry/api": "^1.0.0"
+  },
   "devDependencies": {
     "@types/mocha": "8.2.3",
-    "@types/node": "14.17.11",
-    "@types/webpack-env": "1.16.2",
+    "@types/node": "14.17.33",
+    "@types/webpack-env": "1.16.3",
     "codecov": "3.8.3",
     "istanbul-instrumenter-loader": "3.0.1",
-    "karma": "6.3.7",
+    "karma": "6.3.16",
     "karma-chrome-launcher": "3.1.0",
@@ -79,6 +88,6 @@ "karma-coverage-istanbul-reporter": "3.0.3",
     "ts-mocha": "8.0.0",
-    "typescript": "4.3.5",
+    "typescript": "4.4.4",
     "webpack": "4.46.0"
   },
-  "gitHead": "f5e227f0cb829df1ca2dc220a3e0e8ae0e607405"
+  "gitHead": "28a177ffe3950c5602a91391af582a7a8c813c7d"
 }

README.md

 # OpenTelemetry API for JavaScript
 
 [![NPM Published Version][npm-img]][npm-url]
-[![dependencies][dependencies-image]][dependencies-url]
-[![devDependencies][devDependencies-image]][devDependencies-url]
 [![Apache License][license-image]][license-image]
@@ -93,19 +91,7 @@
 [license-image]: https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat
-[dependencies-image]: https://status.david-dm.org/gh/open-telemetry/opentelemetry-js.svg?path=packages%2Fopentelemetry-api-metrics
-[dependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js?path=packages%2Fopentelemetry-api-metrics
-[devDependencies-image]: https://status.david-dm.org/gh/open-telemetry/opentelemetry-js.svg?path=packages%2Fopentelemetry-api-metrics&type=dev
-[devDependencies-url]: https://david-dm.org/open-telemetry/opentelemetry-js?path=packages%2Fopentelemetry-api-metrics&type=dev
 [npm-url]: https://www.npmjs.com/package/@opentelemetry/api-metrics
 [npm-img]: https://badge.fury.io/js/%40opentelemetry%2Fapi-metrics.svg
 
-[trace-api-docs]: https://open-telemetry.github.io/opentelemetry-js/classes/traceapi.html
-[metrics-api-docs]: https://open-telemetry.github.io/opentelemetry-js/classes/metricsapi.html
-[propagation-api-docs]: https://open-telemetry.github.io/opentelemetry-js/classes/propagationapi.html
-[context-api-docs]: https://open-telemetry.github.io/opentelemetry-js/classes/contextapi.html
+[metrics-api-docs]: https://open-telemetry.github.io/opentelemetry-js/modules/_opentelemetry_api_metrics.html
 
-[web]: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-sdk-trace-web
-[tracing]: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-sdk-trace-base
-[node]: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-sdk-trace-node
-[metrics]: https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-sdk-metrics-base
-
 [other-tracing-backends]: https://github.com/open-telemetry/opentelemetry-js#trace-exporters

No alert changes

Improved metrics

Total package byte prevSize

209593

increased by27.41%

Number of package files

138

increased by39.39%

Lines of code

2350

increased by29.62%

Worsened metrics

Dependency count

1

increased byInfinity%

Number of lines in readme file

97

decreased by-12.61%

Dependency changes

• + Added@opentelemetry/api@^1.0.0

• + Added@opentelemetry/api@1.8.0(transitive)