import { Sudo } from './sudo';
/**
 * Sudo change type.
 */
export declare enum ChangeType {
    /**
     *  Sudo was created.
     */
    Create = 0,
    /**
     * Sudo was updated.
     */
    Update = 1,
    /**
     * Sudo was deleted.
     */
    Delete = 2
}
/**
 * Connection state of the subscription.
 */
export declare enum ConnectionState {
    /**
     * Connected and receiving updates.
     */
    Connected = 0,
    /**
     * Disconnected and won't receive any updates. When disconnected all subscribers will be
     * unsubscribed so the consumer must re-subscribe.
     */
    Disconnected = 1
}
/**
 * Subscriber for receiving notifications about new, updated or deleted Sudo.
 */
export interface SudoSubscriber {
    /**
     * Notifies the subscriber of a new, updated or deleted Sudo.
     *
     * @param changeType change type. Please refer to [ChangeType] enum.
     * @param sudo new, updated or deleted Sudo.
     */
    sudoChanged(changeType: ChangeType, sudo: Sudo): void;
    /**
     * Notifies the subscriber that the subscription connection state has changed. The subscriber won't be
     * notified of Sudo changes until the connection status changes to [ConnectionState.CONNECTED]. The subscriber will
     * stop receiving Sudo change notifications when the connection state changes to [ConnectionState.DISCONNECTED].
     * @param state connection state.
     */
    connectionStatusChanged(state: ConnectionState): void;
}