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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License | ||
| * 2.0 and the Server Side Public License, v 1; you may not use this file except | ||
| * in compliance with, at your election, the Elastic License 2.0 or the Server | ||
| * Side Public License, v 1. | ||
| */ | ||
|
|
||
| import { TestScheduler } from 'rxjs/testing'; | ||
| import { ServiceStatus, ServiceStatusLevels } from './types'; | ||
| import { getOverallStatusChanges } from './log_overall_status'; | ||
|
|
||
| const getTestScheduler = () => | ||
| new TestScheduler((actual, expected) => { | ||
| expect(actual).toEqual(expected); | ||
| }); | ||
|
|
||
| const createStatus = (parts: Partial<ServiceStatus> = {}): ServiceStatus => ({ | ||
| level: ServiceStatusLevels.available, | ||
| summary: 'summary', | ||
| ...parts, | ||
| }); | ||
|
|
||
| describe('getOverallStatusChanges', () => { | ||
| it('emits an initial message after first overall$ emission', () => { | ||
| getTestScheduler().run(({ expectObservable, hot }) => { | ||
| const overall$ = hot<ServiceStatus>('--a', { | ||
| a: createStatus(), | ||
| }); | ||
| const stop$ = hot<void>(''); | ||
| const expected = '--a'; | ||
|
|
||
| expectObservable(getOverallStatusChanges(overall$, stop$)).toBe(expected, { | ||
| a: 'Kibana is now available', | ||
| }); | ||
| }); | ||
| }); | ||
|
|
||
| it('emits a new message every time the status level changes', () => { | ||
| getTestScheduler().run(({ expectObservable, hot }) => { | ||
| const overall$ = hot<ServiceStatus>('--a--b', { | ||
| a: createStatus({ | ||
| level: ServiceStatusLevels.degraded, | ||
| }), | ||
| b: createStatus({ | ||
| level: ServiceStatusLevels.available, | ||
| }), | ||
| }); | ||
| const stop$ = hot<void>(''); | ||
| const expected = '--a--b'; | ||
|
|
||
| expectObservable(getOverallStatusChanges(overall$, stop$)).toBe(expected, { | ||
| a: 'Kibana is now degraded', | ||
| b: 'Kibana is now available (was degraded)', | ||
| }); | ||
| }); | ||
| }); | ||
|
|
||
| it('does not emit when the status stays the same', () => { | ||
| getTestScheduler().run(({ expectObservable, hot }) => { | ||
| const overall$ = hot<ServiceStatus>('--a--b--c', { | ||
| a: createStatus({ | ||
| level: ServiceStatusLevels.degraded, | ||
| summary: 'summary 1', | ||
| }), | ||
| b: createStatus({ | ||
| level: ServiceStatusLevels.degraded, | ||
| summary: 'summary 2', | ||
| }), | ||
| c: createStatus({ | ||
| level: ServiceStatusLevels.available, | ||
| summary: 'summary 2', | ||
| }), | ||
| }); | ||
| const stop$ = hot<void>(''); | ||
| const expected = '--a-----b'; | ||
|
|
||
| expectObservable(getOverallStatusChanges(overall$, stop$)).toBe(expected, { | ||
| a: 'Kibana is now degraded', | ||
| b: 'Kibana is now available (was degraded)', | ||
| }); | ||
| }); | ||
| }); | ||
|
|
||
| it('stops emitting once `stop$` emits', () => { | ||
| getTestScheduler().run(({ expectObservable, hot }) => { | ||
| const overall$ = hot<ServiceStatus>('--a--b', { | ||
| a: createStatus({ | ||
| level: ServiceStatusLevels.degraded, | ||
| }), | ||
| b: createStatus({ | ||
| level: ServiceStatusLevels.available, | ||
| }), | ||
| }); | ||
| const stop$ = hot<void>('----(s|)'); | ||
| const expected = '--a-|'; | ||
|
|
||
| expectObservable(getOverallStatusChanges(overall$, stop$)).toBe(expected, { | ||
| a: 'Kibana is now degraded', | ||
| }); | ||
| }); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License | ||
| * 2.0 and the Server Side Public License, v 1; you may not use this file except | ||
| * in compliance with, at your election, the Elastic License 2.0 or the Server | ||
| * Side Public License, v 1. | ||
| */ | ||
|
|
||
| import { Observable } from 'rxjs'; | ||
| import { distinctUntilChanged, pairwise, startWith, takeUntil, map } from 'rxjs/operators'; | ||
| import { ServiceStatus } from './types'; | ||
|
|
||
| export const getOverallStatusChanges = ( | ||
| overall$: Observable<ServiceStatus>, | ||
| stop$: Observable<void> | ||
| ) => { | ||
| return overall$.pipe( | ||
| takeUntil(stop$), | ||
| distinctUntilChanged((previous, next) => { | ||
| return previous.level.toString() === next.level.toString(); | ||
| }), | ||
| startWith(undefined), | ||
| pairwise(), | ||
| map(([oldStatus, newStatus]) => { | ||
| if (oldStatus) { | ||
| return `Kibana is now ${newStatus!.level.toString()} (was ${oldStatus!.level.toString()})`; | ||
| } | ||
| return `Kibana is now ${newStatus!.level.toString()}`; | ||
| }) | ||
| ); | ||
| }; |
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