import * as cdk from "aws-cdk-lib";
import type * as cloudwatch from "aws-cdk-lib/aws-cloudwatch";
import * as ec2 from "aws-cdk-lib/aws-ec2";
import * as rds from "aws-cdk-lib/aws-rds";
import type * as sm from "aws-cdk-lib/aws-secretsmanager";
import * as constructs from "constructs";
/**
 * Configure database alarms.
 *
 * Alarms are enabled by default (when you supply an `alarmAction` and
 * `warningAction`). To explicitly disable automatic alarms use
 * `{ enabled: false }`.
 */
export type DatabaseAlarmsConfig = {
    enabled: false;
} | {
    /**
     * When alarms are enabled, both actions are required.
     */
    alarmAction: cloudwatch.IAlarmAction;
    warningAction: cloudwatch.IAlarmAction;
    /**
     * CPU credits alarm config
     */
    cpuCreditsAlarm?: {
        /**
         * @default true if instance type is burstable
         */
        enabled?: boolean;
        /** Whether to attach OK actions for this alarm. @default true */
        enableOkAlarm?: boolean;
        action?: cloudwatch.IAlarmAction;
        /** @default 10% of maximum earned credits for instance type */
        threshold?: number;
        appendToAlarmDescription?: string;
    };
    /**
     * Storage space alarm overrides
     */
    storageSpaceAlarms?: {
        /**
         * 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;
            action?: cloudwatch.IAlarmAction;
            /** Whether to attach OK actions for this alarm. @default true */
            enableOkAlarm?: boolean;
            /** @default 25% of allocated storage */
            threshold?: cdk.Size;
        };
        criticallyLowStorageSpaceAlarm?: {
            /**
             * Set to `false` to disable the critically low storage space alarm.
             * @default true
             */
            enabled?: boolean;
            action?: cloudwatch.IAlarmAction;
            /** Whether to attach OK actions for this alarm. @default true */
            enableOkAlarm?: boolean;
            /** @default 5% of allocated storage */
            threshold?: cdk.Size;
        };
        appendToAlarmDescription?: string;
    };
    /**
     * CPU utilization alarm overrides.
     */
    cpuUtilizationAlarm?: {
        enabled?: boolean;
        /** Whether to attach OK actions for this alarm. @default true */
        enableOkAlarm?: boolean;
        action?: cloudwatch.IAlarmAction;
        /** @default 80 */
        threshold?: number;
        /** @default 5 */
        evaluationPeriods?: number;
        /** @default 2 minutes */
        period?: cdk.Duration;
        appendToAlarmDescription?: string;
    };
};
export interface DatabaseProps extends cdk.StackProps {
    vpc: ec2.IVpc;
    engine: rds.IInstanceEngine;
    /**
     * @default master
     */
    masterUsername?: string;
    /**
     * @default app
     */
    databaseName?: string;
    /**
     * @default 25
     */
    allocatedStorageGb?: number;
    instanceType: ec2.InstanceType;
    instanceIdentifier: string;
    /**
     * @default true
     */
    isMultiAz?: boolean;
    /**
     * Must not be removed once it has been set, as changing this
     * results in a new DB instance being created.
     *
     * Also, remember to give database a new name when changing this prop, or else
     * the new instance name will crash with the existing instance.
     */
    snapshotIdentifier?: string;
    /**
     * @default false
     */
    usePublicSubnets?: boolean;
    /**
     * Weekly maintenance window in UTC, format `ddd:hh:mm-ddd:hh:mm`.
     * Minimum 30 minutes; must not overlap `preferredBackupWindow`.
     *
     * @default AWS-assigned
     * @example "sun:03:00-sun:04:00"
     */
    preferredMaintenanceWindow?: string;
    /**
     * Daily backup window in UTC, format `hh:mm-hh:mm`.
     * Minimum 30 minutes; must not overlap `preferredMaintenanceWindow`.
     *
     * @default AWS-assigned
     * @example "01:00-02:00"
     */
    preferredBackupWindow?: string;
    /**
     * Whether AWS automatically applies minor engine version upgrades
     * during the maintenance window.
     *
     * @default AWS default (true)
     */
    autoMinorVersionUpgrade?: boolean;
    /**
     * Escape hatch for RDS option combinations the construct doesn't expose
     * directly. Overrides any value set via the typed props above.
     */
    overrideDbOptions?: Partial<rds.DatabaseInstanceSourceProps>;
    /**
     * Configure database alarms.
     *
     * This property is required and must be one of two shapes:
     *  - `{ enabled: false }` to explicitly disable automatic alarms
     *  - `{ alarmAction, warningAction }` to enable alarms and provide both channels
     *
     * Default: enabled.
     */
    alarms: DatabaseAlarmsConfig;
}
export declare class Database extends constructs.Construct {
    readonly secret: sm.ISecret;
    readonly connections: ec2.Connections;
    readonly databaseInstance: rds.IDatabaseInstance;
    readonly instanceType: ec2.InstanceType;
    readonly allocatedStorage: cdk.Size;
    constructor(scope: constructs.Construct, id: string, props: DatabaseProps);
    allowConnectionFrom(source: ec2.ISecurityGroup): void;
}