import * as plugins from './plugins.js';
import type { IControllerSystemMetrics, IControllerSystemMetricsHistoryPoint } from '../dist_ts_interfaces/index.js';
export declare const systemMetricsHistoryWindowMs: number;
export declare const systemMetricsHistoryResolutionMs = 10000;
interface IControllerSystemMetricsHistoryDocument {
    id: string;
    sampledAt: number;
    expiresAt: Date;
    point: IControllerSystemMetricsHistoryPoint;
}
export declare class ControllerSystemMetricsHistoryModel extends plugins.smartdata.SmartDataDbDoc<ControllerSystemMetricsHistoryModel, IControllerSystemMetricsHistoryDocument> {
    id: string;
    sampledAt: number;
    expiresAt: Date;
    point: IControllerSystemMetricsHistoryPoint;
}
export declare const toSystemMetricsHistoryPoint: (metricsArg: IControllerSystemMetrics) => IControllerSystemMetricsHistoryPoint;
export declare const recordSystemMetricsHistoryPoint: (metricsArg: IControllerSystemMetrics) => Promise<void>;
export declare const listSystemMetricsHistoryPoints: (nowArg?: number) => Promise<IControllerSystemMetricsHistoryPoint[]>;
/** TTL is an additional guard; explicit bounded deletion also works on embedded SmartDB. */
export declare const pruneSystemMetricsHistory: (nowArg?: number) => Promise<void>;
export {};