unleash-server/dist/lib/features/maintenance/maintenance-service.js

Unleash is an enterprise ready feature flag service. It provides different strategies for handling feature flags.

import memoizee from 'memoizee';
import { maintenanceSettingsKey } from '../../types/settings/maintenance-settings.js';
import { minutesToMilliseconds } from 'date-fns';
export default class MaintenanceService {
    constructor(config, settingService) {
        this.config = config;
        this.logger = config.getLogger('services/maintenance-service.ts');
        this.settingService = settingService;
        this.resolveMaintenance = memoizee(async () => (await this.getMaintenanceSetting()).enabled, {
            promise: true,
            maxAge: minutesToMilliseconds(1),
        });
    }
    async isMaintenanceMode() {
        try {
            return (this.config.flagResolver.isEnabled('maintenanceMode') ||
                (await this.resolveMaintenance()));
        }
        catch (e) {
            this.logger.warn('Error checking maintenance mode', e);
            return false;
        }
    }
    async getMaintenanceSetting() {
        return this.settingService.getWithDefault(maintenanceSettingsKey, {
            enabled: false,
        });
    }
    async toggleMaintenanceMode(setting, auditUser) {
        //@ts-ignore
        this.resolveMaintenance.clear();
        return this.settingService.insert(maintenanceSettingsKey, setting, auditUser, false);
    }
}
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