import type { IAutoScalingGroup } from 'aws-cdk-lib/aws-autoscaling';
import type { IInstance, IVpc } from 'aws-cdk-lib/aws-ec2';
import type { Construct } from 'constructs';
import { RequestProtocol, RequestProtocolVersion, TargetGroupBase, TargetType } from './base-target-group';
import type { HealthCheck } from './health-check';
export interface InstanceTarget {
    /**
     * The EC2 Instance
     */
    readonly instance: IInstance;
    /**
     * The port on which the target is listening
     * @default - Defaults to port 80 for HTTP, or 443 for HTTPS
     */
    readonly port?: number;
}
export interface InstanceTargetGroupProps {
    /**
     * The name of the target group
     * @default - Automatically generated name
     */
    readonly name?: string;
    /**
     * The VPC where the target instances reside
     */
    readonly vpc: IVpc;
    /**
     * The targets to associate with the target group
     */
    readonly instances?: InstanceTarget[];
    /**
     * The ASGs to associate with the target group
     */
    readonly autoScalingGroups?: IAutoScalingGroup[];
    /**
     * The protocol to use for routing traffic to the targets.
     * Can't be changed after creation.
     * @default Protocol.HTTPS
     */
    readonly protocol?: RequestProtocol;
    /**
     * Choose the protocol version for requests to be sent to targets.
     * The protocol version you choose must support the request protocols
     * from clients.
     * @default - Protocol.HTTP1 if HTTP or HTTPS is selected
     */
    readonly protocolVersion?: RequestProtocolVersion;
    /**
     *
     * @default - Defaults to port 80 for HTTP, or 443 for HTTPS
     */
    readonly port?: number;
    /**
     * Healthcheck
     */
    readonly healthCheck?: HealthCheck;
}
/**
 * Supports creating a Target group with instances within a specific VPC
 */
export declare class InstanceTargetGroup extends TargetGroupBase {
    readonly name: string;
    readonly targetType = TargetType.INSTANCE;
    readonly protocol: RequestProtocol;
    readonly protocolVersion?: RequestProtocolVersion;
    readonly targetGroupArn: string;
    readonly targetGroupId: string;
    readonly port: number;
    readonly vpc: IVpc;
    readonly healthCheck: HealthCheck;
    readonly instances: InstanceTarget[];
    readonly autoScalingGroups: IAutoScalingGroup[];
    private readonly _resource;
    constructor(scope: Construct, id: string, props: InstanceTargetGroupProps);
    /**
     * Adds a target to the target Group
     * @param target
     */
    addTarget(target: InstanceTarget): void;
}