import { IAspect, aws_elasticloadbalancingv2 as elbv2, aws_cloudwatch as cloudwatch, Duration } from 'aws-cdk-lib';
import { Construct, IConstruct } from 'constructs';
import { AlarmBaseProps } from './common';
/**
 * The recommended metrics for NetworkTargetGroup alarms.
 */
export declare enum NetworkTargetGroupRecommendedAlarmsMetrics {
    /**
     * The number of healthy targets in the target group.
     */
    HEALTHY_HOST_COUNT = "HealthyHostCount",
    /**
     * The number of unhealthy targets in the target group.
     */
    UNHEALTHY_HOST_COUNT = "UnHealthyHostCount"
}
/**
 * The common optional configuration for the alarms.
 */
export interface NetworkTargetGroupAlarmBaseConfig extends AlarmBaseProps {
    /**
     * The period over which the specified statistic is applied.
     *
     * @default Duration.minutes(1)
     */
    readonly period?: Duration;
}
/**
 * The common properties for the NetworkTargetGroup alarms.
 */
export interface NetworkTargetGroupAlarmProps {
    /**
     * The NetworkTargetGroup to monitor.
     */
    readonly targetGroup: elbv2.NetworkTargetGroup;
}
/**
 * Configuration for the HealthyHostCount alarm.
 */
export interface NetworkTargetGroupHealthyHostCountAlarmConfig extends NetworkTargetGroupAlarmBaseConfig {
    /**
     * The value against which the specified statistic is compared.
     * You should set this threshold based on the minimum number of healthy hosts
     * required for your application to function properly.
     *
     * @default 1
     */
    readonly threshold?: number;
    /**
     * The number of periods over which data is compared to the specified threshold.
     *
     * @default 5
     */
    readonly evaluationPeriods?: number;
    /**
     * The number of data points that must be breaching to trigger the alarm.
     *
     * @default 5
     */
    readonly datapointsToAlarm?: number;
    /**
     * The alarm name.
     *
     * @default - targetGroupName + ' - HealthyHostCount'
     */
    readonly alarmName?: string;
    /**
     * The description of the alarm.
     *
     * @default - This alarm is used to detect when the number of healthy hosts in the target group
     * falls below the threshold. A low number of healthy hosts can indicate service availability issues.
     */
    readonly alarmDescription?: string;
}
/**
 * The properties for the NetworkTargetGroupHealthyHostCountAlarm construct.
 */
export interface NetworkTargetGroupHealthyHostCountAlarmProps extends NetworkTargetGroupAlarmProps, NetworkTargetGroupHealthyHostCountAlarmConfig {
}
/**
 * This alarm is used to detect when the number of healthy hosts in the target group falls below the threshold.
 *
 * A low number of healthy hosts can indicate service availability issues.
 */
export declare class NetworkTargetGroupHealthyHostCountAlarm extends cloudwatch.Alarm {
    constructor(scope: IConstruct, id: string, props: NetworkTargetGroupHealthyHostCountAlarmProps);
}
/**
 * Configuration for the UnHealthyHostCount alarm.
 */
export interface NetworkTargetGroupUnHealthyHostCountAlarmConfig extends NetworkTargetGroupAlarmBaseConfig {
    /**
     * The value against which the specified statistic is compared.
     * You should set this threshold based on the maximum number of unhealthy hosts
     * that your application can tolerate before service is impacted.
     *
     * @default 0
     */
    readonly threshold?: number;
    /**
     * The number of periods over which data is compared to the specified threshold.
     *
     * @default 5
     */
    readonly evaluationPeriods?: number;
    /**
     * The number of data points that must be breaching to trigger the alarm.
     *
     * @default 5
     */
    readonly datapointsToAlarm?: number;
    /**
     * The alarm name.
     *
     * @default - targetGroupName + ' - UnHealthyHostCount'
     */
    readonly alarmName?: string;
    /**
     * The description of the alarm.
     *
     * @default - This alarm is used to detect when the number of unhealthy hosts in the target group
     * exceeds the threshold. A high number of unhealthy hosts can indicate service health issues.
     */
    readonly alarmDescription?: string;
}
/**
 * The properties for the NetworkTargetGroupUnHealthyHostCountAlarm construct.
 */
export interface NetworkTargetGroupUnHealthyHostCountAlarmProps extends NetworkTargetGroupAlarmProps, NetworkTargetGroupUnHealthyHostCountAlarmConfig {
}
/**
 * This alarm is used to detect when the number of unhealthy hosts in the target group exceeds the threshold.
 *
 * A high number of unhealthy hosts can indicate service health issues.
 */
export declare class NetworkTargetGroupUnHealthyHostCountAlarm extends cloudwatch.Alarm {
    constructor(scope: IConstruct, id: string, props: NetworkTargetGroupUnHealthyHostCountAlarmProps);
}
/**
 * Configurations for the recommended alarms for a NetworkTargetGroup.
 *
 * Default actions are overridden by the actions specified in the
 * individual alarm configurations.
 */
export interface NetworkTargetGroupRecommendedAlarmsConfig {
    /**
     * The default action to take when an alarm is triggered.
     *
     * @default - None
     */
    readonly defaultAlarmAction?: cloudwatch.IAlarmAction;
    /**
     * The default action to take when an alarm enters the ok state.
     *
     * @default - None
     */
    readonly defaultOkAction?: cloudwatch.IAlarmAction;
    /**
     * The default action to take when an alarm has insufficient data.
     *
     * @default - None
     */
    readonly defaultInsufficientDataAction?: cloudwatch.IAlarmAction;
    /**
     * How to handle missing data for this alarm.
     *
     * @default TreatMissingData.MISSING
     */
    readonly treatMissingData?: cloudwatch.TreatMissingData;
    /**
     * Alarm metrics to exclude from the recommended alarms.
     *
     * @default - None
     */
    readonly excludeAlarms?: NetworkTargetGroupRecommendedAlarmsMetrics[];
    /**
     * The resources to exclude from the recommended alarms.
     *
     * Use a resources id to exclude a specific resource.
     */
    readonly excludeResources?: string[];
    /**
     * The configuration for the HealthyHostCount alarm.
     */
    readonly configHealthyHostCountAlarm?: NetworkTargetGroupHealthyHostCountAlarmConfig;
    /**
     * The configuration for the UnHealthyHostCount alarm.
     */
    readonly configUnHealthyHostCountAlarm?: NetworkTargetGroupUnHealthyHostCountAlarmConfig;
}
/**
 * Properties for the NetworkTargetGroupRecommendedAlarms construct.
 */
export interface NetworkTargetGroupRecommendedAlarmsProps extends NetworkTargetGroupRecommendedAlarmsConfig {
    /**
     * The NetworkTargetGroup to monitor.
     */
    readonly targetGroup: elbv2.NetworkTargetGroup;
}
/**
 * A construct that creates the recommended alarms for a NetworkTargetGroup.
 *
 * @see https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/elb-metricscollected.html
 */
export declare class NetworkTargetGroupRecommendedAlarms extends Construct {
    /**
     * The HealthyHostCount alarm.
     */
    readonly alarmHealthyHostCount?: NetworkTargetGroupHealthyHostCountAlarm;
    /**
     * The UnHealthyHostCount alarm.
     */
    readonly alarmUnHealthyHostCount?: NetworkTargetGroupUnHealthyHostCountAlarm;
    constructor(scope: Construct, id: string, props: NetworkTargetGroupRecommendedAlarmsProps);
}
/**
 * An extension for the NetworkTargetGroup construct that provides methods
 * to create recommended alarms.
 */
export declare class NetworkTargetGroup extends elbv2.NetworkTargetGroup {
    constructor(scope: Construct, id: string, props: elbv2.NetworkTargetGroupProps);
    /**
     * Creates an alarm that monitors the healthy host count for the NetworkTargetGroup.
     */
    alarmHealthyHostCount(props?: NetworkTargetGroupHealthyHostCountAlarmConfig): NetworkTargetGroupHealthyHostCountAlarm;
    /**
     * Creates an alarm that monitors the unhealthy host count for the NetworkTargetGroup.
     */
    alarmUnHealthyHostCount(props?: NetworkTargetGroupUnHealthyHostCountAlarmConfig): NetworkTargetGroupUnHealthyHostCountAlarm;
    /**
     * Creates the recommended alarms for the NetworkTargetGroup.
     *
     * @see https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/elb-metricscollected.html
     */
    applyRecommendedAlarms(props: NetworkTargetGroupRecommendedAlarmsConfig): NetworkTargetGroupRecommendedAlarms;
}
/**
 * Configures the recommended alarms for a NetworkTargetGroup.
 *
 * @see https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/elb-metricscollected.html
 */
export declare class NetworkTargetGroupRecommendedAlarmsAspect implements IAspect {
    private readonly props;
    constructor(props: NetworkTargetGroupRecommendedAlarmsConfig);
    visit(node: IConstruct): void;
}