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fix: filter empty metrics before we collect last seen toggles. (#2172)
* fix: filter empty metrics before we collect last seen toggles. fixes: #2104 * fix: add a last-seen service to batch last-seen toggle updates Co-authored-by: Fredrik Strand Oseberg <fredrik.no@gmail.com>
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Original file line number | Diff line number | Diff line change |
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import { secondsToMilliseconds } from 'date-fns'; | ||
import { Logger } from '../../logger'; | ||
import { IUnleashConfig } from '../../server-impl'; | ||
import { IUnleashStores } from '../../types'; | ||
import { IClientMetricsEnv } from '../../types/stores/client-metrics-store-v2'; | ||
import { IFeatureToggleStore } from '../../types/stores/feature-toggle-store'; | ||
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export class LastSeenService { | ||
private timers: NodeJS.Timeout[] = []; | ||
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private lastSeenToggles: Set<string> = new Set(); | ||
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private logger: Logger; | ||
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private featureToggleStore: IFeatureToggleStore; | ||
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constructor( | ||
{ featureToggleStore }: Pick<IUnleashStores, 'featureToggleStore'>, | ||
config: IUnleashConfig, | ||
lastSeenInterval = secondsToMilliseconds(30), | ||
) { | ||
this.featureToggleStore = featureToggleStore; | ||
this.logger = config.getLogger( | ||
'/services/client-metrics/last-seen-service.ts', | ||
); | ||
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this.timers.push( | ||
setInterval(() => this.store(), lastSeenInterval).unref(), | ||
); | ||
} | ||
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async store(): Promise<number> { | ||
const count = this.lastSeenToggles.size; | ||
if (count > 0) { | ||
const lastSeenToggles = [...this.lastSeenToggles]; | ||
this.lastSeenToggles = new Set(); | ||
this.logger.debug( | ||
`Updating last seen for ${lastSeenToggles.length} toggles`, | ||
); | ||
await this.featureToggleStore.setLastSeen(lastSeenToggles); | ||
} | ||
return count; | ||
} | ||
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updateLastSeen(clientMetrics: IClientMetricsEnv[]): void { | ||
clientMetrics | ||
.filter( | ||
(clientMetric) => clientMetric.yes > 0 || clientMetric.no > 0, | ||
) | ||
.forEach((clientMetric) => | ||
this.lastSeenToggles.add(clientMetric.featureName), | ||
); | ||
} | ||
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destroy(): void { | ||
this.timers.forEach(clearInterval); | ||
} | ||
} |
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