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chore: add unknown flag metric for unique flag names (#10601)

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https://linear.app/unleash/issue/2-3845/add-metric-for-unique-unknown-flag-names

Adds a new unknown flag metric for unique unknown flag names.

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src="https://github.com/user-attachments/assets/c20ce53e-eff3-4cda-af4b-f2c2aae8575c"
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This commit is contained in:
Nuno Góis 2025-09-03 08:44:28 +01:00 committed by GitHub
parent 778eaa9873
commit d5f834e851
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2 changed files with 22 additions and 4 deletions
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14
src/lib/features/metrics/unknown-flags/unknown-flags-store.ts
View File

@ -37,12 +37,16 @@ export type QueryParams = {
}[];
};
type CountParams = {
unique?: boolean;
};
export interface IUnknownFlagsStore {
insert(flags: UnknownFlagReport[]): Promise<void>;
getAll(params?: QueryParams): Promise<UnknownFlag[]>;
clear(hoursAgo: number): Promise<void>;
deleteAll(): Promise<void>;
count(): Promise<number>;
count(params?: CountParams): Promise<number>;
}
export class UnknownFlagsStore implements IUnknownFlagsStore {
@ -157,8 +161,12 @@ export class UnknownFlagsStore implements IUnknownFlagsStore {
await this.db(TABLE).delete();
}
async count(): Promise<number> {
const row = await this.db(TABLE).count('* as count').first();
async count({ unique }: CountParams = {}): Promise<number> {
const countQuery = unique
? this.db(TABLE).countDistinct({ count: 'name' }).first()
: this.db(TABLE).count('* as count').first();
const row = await countQuery;
return Number(row?.count ?? 0);
}
}

12
src/lib/metrics.ts
View File

@ -761,7 +761,12 @@ export function registerPrometheusMetrics(
const unknownFlagsGauge = createGauge({
name: 'unknown_flags',
help: 'Number of unknown flags reported in the last 24 hours, if any. Maximum of 1000.',
help: 'Number of unknown flag reports (name + app + env) in the last 24 hours, if any.',
});
const unknownFlagsUniqueNamesGauge = createGauge({
name: 'unknown_flags_unique_names',
help: 'Number of unique unknown flag names reported in the last 24 hours, if any.',
});
// register event listeners
@ -1230,6 +1235,11 @@ export function registerPrometheusMetrics(
const unknownFlags = await stores.unknownFlagsStore.count();
unknownFlagsGauge.reset();
unknownFlagsGauge.set(unknownFlags);
const unknownFlagsUniqueNames =
await stores.unknownFlagsStore.count({ unique: true });
unknownFlagsUniqueNamesGauge.reset();
unknownFlagsUniqueNamesGauge.set(unknownFlagsUniqueNames);
} catch (e) {}
},
};