import * as cdk from "aws-cdk-lib";
import * as cloudwatch from "aws-cdk-lib/aws-cloudwatch";
import type * as ec2 from "aws-cdk-lib/aws-ec2";
import * as constructs from "constructs";
export interface DatabaseAlarmsProps {
    /**
     * The action to use for alarms sent to "alarms" Slack channel,
     * e.g., critical alerts.
     */
    alarmAction: cloudwatch.IAlarmAction;
    /**
     * The action to use for alarms sent to "warning" Slack channel,
     * e.g., less critical alerts.
     */
    warningAction: cloudwatch.IAlarmAction;
    instanceIdentifier: string;
    instanceType: ec2.InstanceType;
    allocatedStorage: cdk.Size;
}
export declare class DatabaseAlarms extends constructs.Construct {
    private readonly alarmAction;
    private readonly warningAction;
    private readonly databaseInstanceIdentifier;
    private readonly instanceType;
    private readonly allocatedStorage;
    constructor(scope: constructs.Construct, id: string, props: DatabaseAlarmsProps);
    /**
     * Sets up a CloudWatch Alarm that triggers if the CPU credit balance for
     * a burstable instance breach a certain threshold.
     *
     * NOTE: This alarm is only applicable for burstable instances, and a balance of 0 credits will only have performance
     * implications for T2 instances. T3 and T4g instances will instead cost more for prolonged high CPU utilization after
     * the balance is depleted.
     */
    addCpuCreditsAlarm(
    /**
     * Configuration for an alarm.
     *
     * @default Configured with sane defaults.
     */
    props?: {
        /**
         * An action to use for CloudWatch alarm state changes instead of the default action
         */
        action?: cloudwatch.IAlarmAction;
        /**
         * The CloudWatch Alarm will change its state to ALARM if the number of CPU credits drops below this threshold.
         *
         * See https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-credits-baseline-concepts.html#earning-CPU-credits for an overview of maximum CPU credits for various instance types.
         *
         * @default 10% of the maximum earned CPU credits for the instance type.
         */
        threshold?: number;
        /**
         * @default true
         */
        enableOkAlarm?: boolean;
        /**
         * Add extra information to the alarm description, like Runbook URL or steps to triage.
         */
        appendToAlarmDescription?: string;
    }): void;
    /**
     * Sets up two CloudWatch Alarms for monitoring disk storage space:
     * 1) one that triggers if the available disk storage space is low.
     * 2) one that triggers if the available disk storage space is critically low.
     *
     * You may want to use different alarm actions for the two alarms, e.g., one can be
     * categorized as a "warning", while the other one can be considered an "alarm".
     */
    addStorageSpaceAlarms(props?: {
        /**
         * Set to `false` to disable all storage space alarms (both low and critically low).
         * Individual alarms can still be disabled even when this is true.
         * @default true
         */
        enabled?: boolean;
        lowStorageSpaceAlarm?: {
            /**
             * Set to `false` to disable the low storage space alarm.
             * @default true
             */
            enabled?: boolean;
            /**
             * An action to use for CloudWatch alarm state changes instead of the default action
             */
            action?: cloudwatch.IAlarmAction;
            /**
             * @default 25% of the allocated storage.
             */
            threshold?: cdk.Size;
            /**
             * Whether to attach OK actions for this alarm. @default true
             */
            enableOkAlarm?: boolean;
        };
        /**
         * Configuration for critically low storage alarm.
         */
        criticallyLowStorageSpaceAlarm?: {
            /**
             * Set to `false` to disable the critically low storage space alarm.
             * @default true
             */
            enabled?: boolean;
            /**
             * An action to use for CloudWatch alarm state changes instead of the default action
             */
            action?: cloudwatch.IAlarmAction;
            /**
             * @default 5% of the allocated storage.
             */
            threshold?: cdk.Size;
            /**
             * Whether to attach OK actions for this alarm. @default true
             */
            enableOkAlarm?: boolean;
        };
        /**
         * Add extra information to the alarm description, like Runbook URL or steps to triage.
         */
        appendToAlarmDescription?: string;
    }): void;
    /**
     * Sets up a CloudWatch Alarm that triggers if the average CPU utilization for
     * the RDS instance exceeds a given threshold.
     */
    addCpuUtilizationAlarm(
    /**
     * Configuration for an alarm.
     *
     * @default Configured with sane defaults.
     */
    props?: {
        /**
         * An action to use for CloudWatch alarm state changes instead of the default action
         */
        action?: cloudwatch.IAlarmAction;
        /**
         * The threshold defined as a percentage that determines if CPU utilization should trigger an alarm or not.
         * @default 80
         */
        threshold?: number;
        /**
         * @default 5
         */
        evaluationPeriods?: number;
        /**
         * @default 2 minutes
         */
        period?: cdk.Duration;
        /**
         * Whether to attach OK actions for this alarm. @default true
         */
        enableOkAlarm?: boolean;
        /**
         * Add extra information to the alarm description, like Runbook URL or steps to triage.
         */
        appendToAlarmDescription?: string;
    }): void;
}