/**
 * log10x_clickhouse_census: where a ClickHouse cluster's CPU goes, read from its
 * own system tables with the credentials in the environment. Read only.
 */
import { z } from 'zod';
import { type ChCreds, type ChQuery } from '../lib/clickhouse-rows-tick.js';
import { type ChassisEnvelope } from '../lib/chassis-envelope.js';
export declare const clickhouseCensusSchema: {
    days: z.ZodDefault<z.ZodNumber>;
    database: z.ZodDefault<z.ZodString>;
    table: z.ZodDefault<z.ZodString>;
    cluster: z.ZodOptional<z.ZodString>;
    view: z.ZodDefault<z.ZodEnum<{
        summary: "summary";
        markdown: "markdown";
    }>>;
};
export interface ClickhouseCensusArgs {
    days?: number;
    database?: string;
    table?: string;
    cluster?: string;
    view?: 'markdown' | 'summary';
}
export interface ClickhouseCensusDeps {
    /** Undefined reads CLICKHOUSE_URL and its credentials from the environment; null means none. */
    creds?: ChCreds | null;
    ch?: ChQuery;
    nowMs?: () => number;
}
/** ClickHouse Cloud spreads the system logs over replicas; a self-managed node does not need the wrapper. */
export declare function defaultCluster(url: string): string | undefined;
export declare function executeClickhouseCensus(args: ClickhouseCensusArgs, deps?: ClickhouseCensusDeps): Promise<ChassisEnvelope>;