import * as docdb from 'aws-cdk-lib/aws-docdb';
import { Construct } from 'constructs';
import { IWatchful } from './watchful';
/**
 * Options for defining alarms.
 */
export interface WatchDocDbClusterOptions {
    /**
     * Threshold of database cpu utilization.
     *
     * @defaultValue 80
     */
    readonly cpuUtilizationThreshold?: number;
    /**
     * Minimum database freeable memory in bytes.
     *
     * @defaultValue 64000000 (64 Megabyte)
     */
    readonly freeableMemoryThresholdInByte?: number;
    /**
     * Threshold of database swap usage
     *
     * @defaultValue 256000000 (256 Megabyte)
     */
    readonly swapUsageThresholdInByte?: number;
    /**
     * Minimum database free local storage space
     *
     * @defaultValue 2000000000 (2 Gigabyte)
     */
    readonly freeLocalStorageInByte?: number;
}
/**
 * Properties for defining a WatchDocDbCluster
 */
export interface WatchDocDbClusterProps extends WatchDocDbClusterOptions {
    /**
     * The reference to IWatchful class. Used internally.
     */
    readonly watchful: IWatchful;
    /**
     * The DocDB cluster that should be watched.
     * [disable-awslint:ref-via-interface]
     */
    readonly docDb: docdb.DatabaseCluster;
}
/**
 * A Construct which creates the following alarms for DocumentDb clusters:
 *
 * - freeable memory
 * - swap usage
 * - free local storage
 */
export declare class WatchDocDbCluster extends Construct {
    private readonly watchful;
    private readonly docDb;
    constructor(scope: Construct, id: string, props: WatchDocDbClusterProps);
    private createCpuUtilizationTooHighAlarm;
    private createFreeableMemoryTooLowAlarm;
    private createSwapUsageTooHighAlarm;
    private createFreeLocalStorageTooLowAlarm;
}