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@opentelemetry/core - npm Package Compare versions

Comparing version 1.5.0 to 1.6.0

3

build/esm/platform/browser/RandomIdGenerator.d.ts
import { IdGenerator } from '../../trace/IdGenerator';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export declare class RandomIdGenerator implements IdGenerator {

@@ -3,0 +6,0 @@ /**

var SPAN_ID_BYTES = 8;
var TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
var RandomIdGenerator = /** @class */ (function () {

@@ -4,0 +7,0 @@ function RandomIdGenerator() {

@@ -16,12 +16,35 @@ /*

*/
function intValue(charCode) {
// 0-9
if (charCode >= 48 && charCode <= 57) {
return charCode - 48;
}
// a-f
if (charCode >= 97 && charCode <= 102) {
return charCode - 87;
}
// A-F
return charCode - 55;
}
var buf8 = Buffer.alloc(8);
var buf16 = Buffer.alloc(16);
export function hexToBase64(hexStr) {
var hexStrLen = hexStr.length;
var hexAsciiCharsStr = '';
for (var i = 0; i < hexStrLen; i += 2) {
var hexPair = hexStr.substring(i, i + 2);
var hexVal = parseInt(hexPair, 16);
hexAsciiCharsStr += String.fromCharCode(hexVal);
var buf;
if (hexStr.length === 16) {
buf = buf8;
}
return Buffer.from(hexAsciiCharsStr, 'ascii').toString('base64');
else if (hexStr.length === 32) {
buf = buf16;
}
else {
buf = Buffer.alloc(hexStr.length / 2);
}
var offset = 0;
for (var i = 0; i < hexStr.length; i += 2) {
var hi = intValue(hexStr.charCodeAt(i));
var lo = intValue(hexStr.charCodeAt(i + 1));
buf.writeUInt8((hi << 4) | lo, offset++);
}
return buf.toString('base64');
}
//# sourceMappingURL=hex-to-base64.js.map
import { IdGenerator } from '../../trace/IdGenerator';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export declare class RandomIdGenerator implements IdGenerator {

@@ -3,0 +6,0 @@ /**

@@ -18,2 +18,5 @@ /*

var TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
var RandomIdGenerator = /** @class */ (function () {

@@ -20,0 +23,0 @@ function RandomIdGenerator() {

5

build/esm/trace/IdGenerator.d.ts

@@ -1,2 +0,5 @@

/** IdGenerator provides an interface for generating Trace Id and Span Id */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* IdGenerator provides an interface for generating Trace Id and Span Id.
*/
export interface IdGenerator {

@@ -3,0 +6,0 @@ /** Returns a trace ID composed of 32 lowercase hex characters. */

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples no traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples no traces.
*/
export declare class AlwaysOffSampler implements Sampler {

@@ -4,0 +7,0 @@ shouldSample(): SamplingResult;

@@ -17,3 +17,6 @@ /*

import { SamplingDecision } from '@opentelemetry/api';
/** Sampler that samples no traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples no traces.
*/
var AlwaysOffSampler = /** @class */ (function () {

@@ -20,0 +23,0 @@ function AlwaysOffSampler() {

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples all traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples all traces.
*/
export declare class AlwaysOnSampler implements Sampler {

@@ -4,0 +7,0 @@ shouldSample(): SamplingResult;

@@ -17,3 +17,6 @@ /*

import { SamplingDecision } from '@opentelemetry/api';
/** Sampler that samples all traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples all traces.
*/
var AlwaysOnSampler = /** @class */ (function () {

@@ -20,0 +23,0 @@ function AlwaysOnSampler() {

import { Context, Link, Sampler, SamplingResult, SpanAttributes, SpanKind } from '@opentelemetry/api';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* A composite sampler that either respects the parent span's sampling decision

@@ -4,0 +5,0 @@ * or delegates to `delegateSampler` for root spans.

@@ -21,2 +21,3 @@ /*

/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* A composite sampler that either respects the parent span's sampling decision

@@ -23,0 +24,0 @@ * or delegates to `delegateSampler` for root spans.

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples a given fraction of traces based of trace id deterministically. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples a given fraction of traces based of trace id deterministically.
*/
export declare class TraceIdRatioBasedSampler implements Sampler {

@@ -4,0 +7,0 @@ private readonly _ratio;

@@ -17,3 +17,6 @@ /*

import { SamplingDecision, isValidTraceId, } from '@opentelemetry/api';
/** Sampler that samples a given fraction of traces based of trace id deterministically. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples a given fraction of traces based of trace id deterministically.
*/
var TraceIdRatioBasedSampler = /** @class */ (function () {

@@ -20,0 +23,0 @@ function TraceIdRatioBasedSampler(_ratio) {

@@ -67,3 +67,8 @@ import { DiagLogLevel } from '@opentelemetry/api';

export declare function parseEnvironment(values: RAW_ENVIRONMENT): ENVIRONMENT;
/**
* Get environment in node or browser without
* populating default values.
*/
export declare function getEnvWithoutDefaults(): ENVIRONMENT;
export {};
//# sourceMappingURL=environment.d.ts.map

@@ -18,2 +18,3 @@ /*

import { TracesSamplerValues } from './sampling';
import { _globalThis } from '../platform/browser/globalThis';
var DEFAULT_LIST_SEPARATOR = ',';

@@ -204,2 +205,11 @@ /**

}
/**
* Get environment in node or browser without
* populating default values.
*/
export function getEnvWithoutDefaults() {
return typeof process !== 'undefined' ?
parseEnvironment(process.env) :
parseEnvironment(_globalThis);
}
//# sourceMappingURL=environment.js.map

@@ -1,2 +0,2 @@

export declare const VERSION = "1.5.0";
export declare const VERSION = "1.6.0";
//# sourceMappingURL=version.d.ts.map

@@ -17,3 +17,3 @@ /*

// this is autogenerated file, see scripts/version-update.js
export var VERSION = '1.5.0';
export var VERSION = '1.6.0';
//# sourceMappingURL=version.js.map
import { IdGenerator } from '../../trace/IdGenerator';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export declare class RandomIdGenerator implements IdGenerator {

@@ -3,0 +6,0 @@ /**

const SPAN_ID_BYTES = 8;
const TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export class RandomIdGenerator {

@@ -4,0 +7,0 @@ constructor() {

@@ -16,12 +16,35 @@ /*

*/
function intValue(charCode) {
// 0-9
if (charCode >= 48 && charCode <= 57) {
return charCode - 48;
}
// a-f
if (charCode >= 97 && charCode <= 102) {
return charCode - 87;
}
// A-F
return charCode - 55;
}
const buf8 = Buffer.alloc(8);
const buf16 = Buffer.alloc(16);
export function hexToBase64(hexStr) {
const hexStrLen = hexStr.length;
let hexAsciiCharsStr = '';
for (let i = 0; i < hexStrLen; i += 2) {
const hexPair = hexStr.substring(i, i + 2);
const hexVal = parseInt(hexPair, 16);
hexAsciiCharsStr += String.fromCharCode(hexVal);
let buf;
if (hexStr.length === 16) {
buf = buf8;
}
return Buffer.from(hexAsciiCharsStr, 'ascii').toString('base64');
else if (hexStr.length === 32) {
buf = buf16;
}
else {
buf = Buffer.alloc(hexStr.length / 2);
}
let offset = 0;
for (let i = 0; i < hexStr.length; i += 2) {
const hi = intValue(hexStr.charCodeAt(i));
const lo = intValue(hexStr.charCodeAt(i + 1));
buf.writeUInt8((hi << 4) | lo, offset++);
}
return buf.toString('base64');
}
//# sourceMappingURL=hex-to-base64.js.map
import { IdGenerator } from '../../trace/IdGenerator';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export declare class RandomIdGenerator implements IdGenerator {

@@ -3,0 +6,0 @@ /**

@@ -18,2 +18,5 @@ /*

const TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export class RandomIdGenerator {

@@ -20,0 +23,0 @@ constructor() {

@@ -1,2 +0,5 @@

/** IdGenerator provides an interface for generating Trace Id and Span Id */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* IdGenerator provides an interface for generating Trace Id and Span Id.
*/
export interface IdGenerator {

@@ -3,0 +6,0 @@ /** Returns a trace ID composed of 32 lowercase hex characters. */

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples no traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples no traces.
*/
export declare class AlwaysOffSampler implements Sampler {

@@ -4,0 +7,0 @@ shouldSample(): SamplingResult;

@@ -17,3 +17,6 @@ /*

import { SamplingDecision } from '@opentelemetry/api';
/** Sampler that samples no traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples no traces.
*/
export class AlwaysOffSampler {

@@ -20,0 +23,0 @@ shouldSample() {

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples all traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples all traces.
*/
export declare class AlwaysOnSampler implements Sampler {

@@ -4,0 +7,0 @@ shouldSample(): SamplingResult;

@@ -17,3 +17,6 @@ /*

import { SamplingDecision } from '@opentelemetry/api';
/** Sampler that samples all traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples all traces.
*/
export class AlwaysOnSampler {

@@ -20,0 +23,0 @@ shouldSample() {

import { Context, Link, Sampler, SamplingResult, SpanAttributes, SpanKind } from '@opentelemetry/api';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* A composite sampler that either respects the parent span's sampling decision

@@ -4,0 +5,0 @@ * or delegates to `delegateSampler` for root spans.

@@ -21,2 +21,3 @@ /*

/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* A composite sampler that either respects the parent span's sampling decision

@@ -23,0 +24,0 @@ * or delegates to `delegateSampler` for root spans.

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples a given fraction of traces based of trace id deterministically. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples a given fraction of traces based of trace id deterministically.
*/
export declare class TraceIdRatioBasedSampler implements Sampler {

@@ -4,0 +7,0 @@ private readonly _ratio;

@@ -17,3 +17,6 @@ /*

import { SamplingDecision, isValidTraceId, } from '@opentelemetry/api';
/** Sampler that samples a given fraction of traces based of trace id deterministically. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples a given fraction of traces based of trace id deterministically.
*/
export class TraceIdRatioBasedSampler {

@@ -20,0 +23,0 @@ constructor(_ratio = 0) {

@@ -67,3 +67,8 @@ import { DiagLogLevel } from '@opentelemetry/api';

export declare function parseEnvironment(values: RAW_ENVIRONMENT): ENVIRONMENT;
/**
* Get environment in node or browser without
* populating default values.
*/
export declare function getEnvWithoutDefaults(): ENVIRONMENT;
export {};
//# sourceMappingURL=environment.d.ts.map

@@ -18,2 +18,3 @@ /*

import { TracesSamplerValues } from './sampling';
import { _globalThis } from '../platform/browser/globalThis';
const DEFAULT_LIST_SEPARATOR = ',';

@@ -201,2 +202,11 @@ /**

}
/**
* Get environment in node or browser without
* populating default values.
*/
export function getEnvWithoutDefaults() {
return typeof process !== 'undefined' ?
parseEnvironment(process.env) :
parseEnvironment(_globalThis);
}
//# sourceMappingURL=environment.js.map

@@ -1,2 +0,2 @@

export declare const VERSION = "1.5.0";
export declare const VERSION = "1.6.0";
//# sourceMappingURL=version.d.ts.map

@@ -17,3 +17,3 @@ /*

// this is autogenerated file, see scripts/version-update.js
export const VERSION = '1.5.0';
export const VERSION = '1.6.0';
//# sourceMappingURL=version.js.map
import { IdGenerator } from '../../trace/IdGenerator';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export declare class RandomIdGenerator implements IdGenerator {

@@ -3,0 +6,0 @@ /**

@@ -6,2 +6,5 @@ "use strict";

const TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
class RandomIdGenerator {

@@ -8,0 +11,0 @@ constructor() {

@@ -19,13 +19,36 @@ "use strict";

*/
function intValue(charCode) {
// 0-9
if (charCode >= 48 && charCode <= 57) {
return charCode - 48;
}
// a-f
if (charCode >= 97 && charCode <= 102) {
return charCode - 87;
}
// A-F
return charCode - 55;
}
const buf8 = Buffer.alloc(8);
const buf16 = Buffer.alloc(16);
function hexToBase64(hexStr) {
const hexStrLen = hexStr.length;
let hexAsciiCharsStr = '';
for (let i = 0; i < hexStrLen; i += 2) {
const hexPair = hexStr.substring(i, i + 2);
const hexVal = parseInt(hexPair, 16);
hexAsciiCharsStr += String.fromCharCode(hexVal);
let buf;
if (hexStr.length === 16) {
buf = buf8;
}
return Buffer.from(hexAsciiCharsStr, 'ascii').toString('base64');
else if (hexStr.length === 32) {
buf = buf16;
}
else {
buf = Buffer.alloc(hexStr.length / 2);
}
let offset = 0;
for (let i = 0; i < hexStr.length; i += 2) {
const hi = intValue(hexStr.charCodeAt(i));
const lo = intValue(hexStr.charCodeAt(i + 1));
buf.writeUInt8((hi << 4) | lo, offset++);
}
return buf.toString('base64');
}
exports.hexToBase64 = hexToBase64;
//# sourceMappingURL=hex-to-base64.js.map
import { IdGenerator } from '../../trace/IdGenerator';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
export declare class RandomIdGenerator implements IdGenerator {

@@ -3,0 +6,0 @@ /**

@@ -21,2 +21,5 @@ "use strict";

const TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
class RandomIdGenerator {

@@ -23,0 +26,0 @@ constructor() {

@@ -1,2 +0,5 @@

/** IdGenerator provides an interface for generating Trace Id and Span Id */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* IdGenerator provides an interface for generating Trace Id and Span Id.
*/
export interface IdGenerator {

@@ -3,0 +6,0 @@ /** Returns a trace ID composed of 32 lowercase hex characters. */

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples no traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples no traces.
*/
export declare class AlwaysOffSampler implements Sampler {

@@ -4,0 +7,0 @@ shouldSample(): SamplingResult;

@@ -20,3 +20,6 @@ "use strict";

const api_1 = require("@opentelemetry/api");
/** Sampler that samples no traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples no traces.
*/
class AlwaysOffSampler {

@@ -23,0 +26,0 @@ shouldSample() {

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples all traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples all traces.
*/
export declare class AlwaysOnSampler implements Sampler {

@@ -4,0 +7,0 @@ shouldSample(): SamplingResult;

@@ -20,3 +20,6 @@ "use strict";

const api_1 = require("@opentelemetry/api");
/** Sampler that samples all traces. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples all traces.
*/
class AlwaysOnSampler {

@@ -23,0 +26,0 @@ shouldSample() {

import { Context, Link, Sampler, SamplingResult, SpanAttributes, SpanKind } from '@opentelemetry/api';
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* A composite sampler that either respects the parent span's sampling decision

@@ -4,0 +5,0 @@ * or delegates to `delegateSampler` for root spans.

@@ -24,2 +24,3 @@ "use strict";

/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* A composite sampler that either respects the parent span's sampling decision

@@ -26,0 +27,0 @@ * or delegates to `delegateSampler` for root spans.

import { Sampler, SamplingResult } from '@opentelemetry/api';
/** Sampler that samples a given fraction of traces based of trace id deterministically. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples a given fraction of traces based of trace id deterministically.
*/
export declare class TraceIdRatioBasedSampler implements Sampler {

@@ -4,0 +7,0 @@ private readonly _ratio;

@@ -20,3 +20,6 @@ "use strict";

const api_1 = require("@opentelemetry/api");
/** Sampler that samples a given fraction of traces based of trace id deterministically. */
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
* Sampler that samples a given fraction of traces based of trace id deterministically.
*/
class TraceIdRatioBasedSampler {

@@ -23,0 +26,0 @@ constructor(_ratio = 0) {

@@ -67,3 +67,8 @@ import { DiagLogLevel } from '@opentelemetry/api';

export declare function parseEnvironment(values: RAW_ENVIRONMENT): ENVIRONMENT;
/**
* Get environment in node or browser without
* populating default values.
*/
export declare function getEnvWithoutDefaults(): ENVIRONMENT;
export {};
//# sourceMappingURL=environment.d.ts.map

@@ -18,5 +18,6 @@ "use strict";

Object.defineProperty(exports, "__esModule", { value: true });
exports.parseEnvironment = exports.DEFAULT_ENVIRONMENT = exports.DEFAULT_ATTRIBUTE_COUNT_LIMIT = exports.DEFAULT_ATTRIBUTE_VALUE_LENGTH_LIMIT = void 0;
exports.getEnvWithoutDefaults = exports.parseEnvironment = exports.DEFAULT_ENVIRONMENT = exports.DEFAULT_ATTRIBUTE_COUNT_LIMIT = exports.DEFAULT_ATTRIBUTE_VALUE_LENGTH_LIMIT = void 0;
const api_1 = require("@opentelemetry/api");
const sampling_1 = require("./sampling");
const globalThis_1 = require("../platform/browser/globalThis");
const DEFAULT_LIST_SEPARATOR = ',';

@@ -205,2 +206,12 @@ /**

exports.parseEnvironment = parseEnvironment;
/**
* Get environment in node or browser without
* populating default values.
*/
function getEnvWithoutDefaults() {
return typeof process !== 'undefined' ?
parseEnvironment(process.env) :
parseEnvironment(globalThis_1._globalThis);
}
exports.getEnvWithoutDefaults = getEnvWithoutDefaults;
//# sourceMappingURL=environment.js.map

@@ -1,2 +0,2 @@

export declare const VERSION = "1.5.0";
export declare const VERSION = "1.6.0";
//# sourceMappingURL=version.d.ts.map

@@ -20,3 +20,3 @@ "use strict";

// this is autogenerated file, see scripts/version-update.js
exports.VERSION = '1.5.0';
exports.VERSION = '1.6.0';
//# sourceMappingURL=version.js.map
{
"name": "@opentelemetry/core",
"version": "1.5.0",
"version": "1.6.0",
"description": "OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.",

@@ -67,6 +67,6 @@ "main": "build/src/index.js",

"devDependencies": {
"@opentelemetry/api": ">=1.0.0 <1.2.0",
"@types/mocha": "8.2.3",
"@types/node": "14.17.33",
"@types/sinon": "10.0.6",
"@opentelemetry/api": ">=1.0.0 <1.3.0",
"@types/mocha": "9.1.1",
"@types/node": "18.6.5",
"@types/sinon": "10.0.13",
"@types/webpack-env": "1.16.3",

@@ -81,9 +81,9 @@ "codecov": "3.8.3",

"karma-webpack": "4.0.2",
"lerna": "3.22.1",
"mocha": "7.2.0",
"lerna": "5.4.3",
"mocha": "10.0.0",
"nyc": "15.1.0",
"rimraf": "3.0.2",
"sinon": "12.0.1",
"ts-loader": "8.3.0",
"ts-mocha": "9.0.2",
"sinon": "14.0.0",
"ts-loader": "8.4.0",
"ts-mocha": "10.0.0",
"typescript": "4.4.4",

@@ -93,9 +93,9 @@ "webpack": "4.46.0"

"peerDependencies": {
"@opentelemetry/api": ">=1.0.0 <1.2.0"
"@opentelemetry/api": ">=1.0.0 <1.3.0"
},
"dependencies": {
"@opentelemetry/semantic-conventions": "1.5.0"
"@opentelemetry/semantic-conventions": "1.6.0"
},
"homepage": "https://github.com/open-telemetry/opentelemetry-js/tree/main/packages/opentelemetry-core",
"gitHead": "776656b6e0cd0fc49a52b734702bc77110e483f1"
"gitHead": "a5abee69119cc41d9d34f6beb5c1826eef1ac0dd"
}

@@ -16,7 +16,2 @@ # OpenTelemetry Core

- [Baggage Propagator](#baggage-propagator)
- [Built-in Sampler](#built-in-sampler)
- [AlwaysOn Sampler](#alwayson-sampler)
- [AlwaysOff Sampler](#alwaysoff-sampler)
- [TraceIdRatioBased Sampler](#traceidratiobased-sampler)
- [ParentBased Sampler](#parentbased-sampler)
- [Useful links](#useful-links)

@@ -65,103 +60,2 @@ - [License](#license)

### Built-in Sampler
Sampler is used to make decisions on `Span` sampling.
#### AlwaysOn Sampler
Samples every trace regardless of upstream sampling decisions.
> This is used as a default Sampler
```js
const { NodeTracerProvider } = require("@opentelemetry/sdk-trace-node");
const { AlwaysOnSampler } = require("@opentelemetry/core");
const tracerProvider = new NodeTracerProvider({
sampler: new AlwaysOnSampler()
});
```
#### AlwaysOff Sampler
Doesn't sample any trace, regardless of upstream sampling decisions.
```js
const { NodeTracerProvider } = require("@opentelemetry/sdk-trace-node");
const { AlwaysOffSampler } = require("@opentelemetry/core");
const tracerProvider = new NodeTracerProvider({
sampler: new AlwaysOffSampler()
});
```
#### TraceIdRatioBased Sampler
Samples some percentage of traces, calculated deterministically using the trace ID.
Any trace that would be sampled at a given percentage will also be sampled at any higher percentage.
The `TraceIDRatioSampler` may be used with the `ParentBasedSampler` to respect the sampled flag of an incoming trace.
```js
const { NodeTracerProvider } = require("@opentelemetry/sdk-trace-node");
const { TraceIdRatioBasedSampler } = require("@opentelemetry/core");
const tracerProvider = new NodeTracerProvider({
// See details of ParentBasedSampler below
sampler: new ParentBasedSampler({
// Trace ID Ratio Sampler accepts a positional argument
// which represents the percentage of traces which should
// be sampled.
root: new TraceIdRatioBasedSampler(0.5)
});
});
```
#### ParentBased Sampler
- This is a composite sampler. `ParentBased` helps distinguished between the
following cases:
- No parent (root span).
- Remote parent with `sampled` flag `true`
- Remote parent with `sampled` flag `false`
- Local parent with `sampled` flag `true`
- Local parent with `sampled` flag `false`
Required parameters:
- `root(Sampler)` - Sampler called for spans with no parent (root spans)
Optional parameters:
- `remoteParentSampled(Sampler)` (default: `AlwaysOn`)
- `remoteParentNotSampled(Sampler)` (default: `AlwaysOff`)
- `localParentSampled(Sampler)` (default: `AlwaysOn`)
- `localParentNotSampled(Sampler)` (default: `AlwaysOff`)
|Parent| parent.isRemote() | parent.isSampled()| Invoke sampler|
|--|--|--|--|
|absent| n/a | n/a |`root()`|
|present|true|true|`remoteParentSampled()`|
|present|true|false|`remoteParentNotSampled()`|
|present|false|true|`localParentSampled()`|
|present|false|false|`localParentNotSampled()`|
```js
const { NodeTracerProvider } = require("@opentelemetry/sdk-trace-node");
const { ParentBasedSampler, AlwaysOffSampler, TraceIdRatioBasedSampler } = require("@opentelemetry/core");
const tracerProvider = new NodeTracerProvider({
sampler: new ParentBasedSampler({
// By default, the ParentBasedSampler will respect the parent span's sampling
// decision. This is configurable by providing a different sampler to use
// based on the situation. See configuration details above.
//
// This will delegate the sampling decision of all root traces (no parent)
// to the TraceIdRatioBasedSampler.
// See details of TraceIdRatioBasedSampler above.
root: new TraceIdRatioBasedSampler(0.5)
})
});
```
## Useful links

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