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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /*! | ||
| * Copyright 2020, OpenTelemetry 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 | ||
| * | ||
| * https://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 { ContextManager } from '@opentelemetry/context-base'; | ||
| import { HttpTextPropagator } from '../context/propagation/HttpTextPropagator'; | ||
| import { MeterProvider } from '../metrics/MeterProvider'; | ||
| import { TracerProvider } from '../trace/tracer_provider'; | ||
|
|
||
| export const GLOBAL_CONTEXT_MANAGER_API_KEY = Symbol.for( | ||
| 'io.opentelemetry.js.api.context' | ||
| ); | ||
| export const GLOBAL_METRICS_API_KEY = Symbol.for( | ||
| 'io.opentelemetry.js.api.metrics' | ||
| ); | ||
| export const GLOBAL_PROPAGATION_API_KEY = Symbol.for( | ||
| 'io.opentelemetry.js.api.propagation' | ||
| ); | ||
| export const GLOBAL_TRACE_API_KEY = Symbol.for('io.opentelemetry.js.api.trace'); | ||
|
|
||
| type Get<T> = (version: number) => T; | ||
| type MyGlobals = Partial<{ | ||
| [GLOBAL_CONTEXT_MANAGER_API_KEY]: Get<ContextManager>; | ||
| [GLOBAL_METRICS_API_KEY]: Get<MeterProvider>; | ||
| [GLOBAL_PROPAGATION_API_KEY]: Get<HttpTextPropagator>; | ||
| [GLOBAL_TRACE_API_KEY]: Get<TracerProvider>; | ||
| }>; | ||
|
|
||
| export const _global = global as typeof global & MyGlobals; | ||
|
|
||
| export function makeGetter<T>( | ||
| requiredVersion: number, | ||
| instance: T, | ||
| fallback: T | ||
| ): Get<T> { | ||
| return (version: number): T => | ||
| version === requiredVersion ? instance : fallback; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| /*! | ||
| * Copyright 2020, OpenTelemetry 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 | ||
| * | ||
| * https://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 * as assert from 'assert'; | ||
| import { NoopContextManager } from '@opentelemetry/context-base'; | ||
| import { | ||
| _global, | ||
| GLOBAL_CONTEXT_MANAGER_API_KEY, | ||
| } from '../../src/api/global-utils'; | ||
|
|
||
| const api1 = require('../../src') as typeof import('../../src'); | ||
|
|
||
| // clear cache and load a second instance of the api | ||
| for (const key of Object.keys(require.cache)) { | ||
| delete require.cache[key]; | ||
| } | ||
| const api2 = require('../../src') as typeof import('../../src'); | ||
|
|
||
| describe('Global Utils', () => { | ||
| // prove they are separate instances | ||
| assert.notEqual(api1, api2); | ||
| // that return separate noop instances to start | ||
| assert.notStrictEqual( | ||
| api1.context['_getContextManager'](), | ||
| api2.context['_getContextManager']() | ||
| ); | ||
|
|
||
| beforeEach(() => { | ||
| api1.context.disable(); | ||
| api1.propagation.disable(); | ||
| api1.trace.disable(); | ||
| api1.metrics.disable(); | ||
| }); | ||
|
|
||
| it('should change the global context manager', () => { | ||
| const original = api1.context['_getContextManager'](); | ||
| const newContextManager = new NoopContextManager(); | ||
| api1.context.setGlobalContextManager(newContextManager); | ||
| assert.notStrictEqual(api1.context['_getContextManager'](), original); | ||
| assert.strictEqual(api1.context['_getContextManager'](), newContextManager); | ||
| }); | ||
|
|
||
| it('should load an instance from one which was set in the other', () => { | ||
| api1.context.setGlobalContextManager(new NoopContextManager()); | ||
| assert.strictEqual( | ||
| api1.context['_getContextManager'](), | ||
| api2.context['_getContextManager']() | ||
| ); | ||
| }); | ||
|
|
||
| it('should disable both if one is disabled', () => { | ||
| const original = api1.context['_getContextManager'](); | ||
|
|
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| api1.context.setGlobalContextManager(new NoopContextManager()); | ||
|
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| assert.notStrictEqual(original, api1.context['_getContextManager']()); | ||
| api2.context.disable(); | ||
| assert.strictEqual(original, api1.context['_getContextManager']()); | ||
| }); | ||
|
|
||
| it('should return the module NoOp implementation if the version is a mismatch', () => { | ||
| const original = api1.context['_getContextManager'](); | ||
| api1.context.setGlobalContextManager(new NoopContextManager()); | ||
| const afterSet = _global[GLOBAL_CONTEXT_MANAGER_API_KEY]!(-1); | ||
|
|
||
| assert.strictEqual(original, afterSet); | ||
| }); | ||
| }); |