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@opentelemetry/api

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/* * Copyright The OpenTelemetry Authors * SPDX-License-Identifier: Apache-2.0 */ import { getGlobal, registerGlobal, unregisterGlobal, } from '../internal/global-utils'; import { NoopTextMapPropagator } from '../propagation/NoopTextMapPropagator'; import { defaultTextMapGetter, defaultTextMapSetter, } from '../propagation/TextMapPropagator'; import { getBaggage, getActiveBaggage, setBaggage, deleteBaggage, } from '../baggage/context-helpers'; import { createBaggage } from '../baggage/utils'; import { DiagAPI } from './diag'; const API_NAME = 'propagation'; const NOOP_TEXT_MAP_PROPAGATOR = new NoopTextMapPropagator(); /** * Singleton object which represents the entry point to the OpenTelemetry Propagation API * * @since 1.0.0 */ export class PropagationAPI { /** Empty private constructor prevents end users from constructing a new instance of the API */ constructor() { this.createBaggage = createBaggage; this.getBaggage = getBaggage; this.getActiveBaggage = getActiveBaggage; this.setBaggage = setBaggage; this.deleteBaggage = deleteBaggage; } /** Get the singleton instance of the Propagator API */ static getInstance() { if (!this._instance) { this._instance = new PropagationAPI(); } return this._instance; } /** * Set the current propagator. * * @returns true if the propagator was successfully registered, else false */ setGlobalPropagator(propagator) { return registerGlobal(API_NAME, propagator, DiagAPI.instance()); } /** * Inject context into a carrier to be propagated inter-process * * @param context Context carrying tracing data to inject * @param carrier carrier to inject context into * @param setter Function used to set values on the carrier */ inject(context, carrier, setter = defaultTextMapSetter) { return this._getGlobalPropagator().inject(context, carrier, setter); } /** * Extract context from a carrier * * @param context Context which the newly created context will inherit from * @param carrier Carrier to extract context from * @param getter Function used to extract keys from a carrier */ extract(context, carrier, getter = defaultTextMapGetter) { return this._getGlobalPropagator().extract(context, carrier, getter); } /** * Return a list of all fields which may be used by the propagator. */ fields() { return this._getGlobalPropagator().fields(); } /** Remove the global propagator */ disable() { unregisterGlobal(API_NAME, DiagAPI.instance()); } _getGlobalPropagator() { return getGlobal(API_NAME) || NOOP_TEXT_MAP_PROPAGATOR; } } //# sourceMappingURL=propagation.js.map