/**
 * SPDX-License-Identifier: Apache-2.0
 */
import { type K8Factory } from '../../core/kube/k8_factory.js';
import { type LeaseHolder } from './lease_holder.js';
import { type Duration } from '../time/duration.js';
import { type NamespaceName } from '../kube/resources/namespace/namespace_name.js';
export interface Lease {
    readonly k8Factory: K8Factory;
    readonly renewalService: LeaseRenewalService;
    readonly leaseName: string;
    readonly leaseHolder: LeaseHolder;
    readonly namespace: NamespaceName;
    readonly durationSeconds: number;
    scheduleId: number;
    /**
     * Acquires the lease. If the lease is already acquired, it checks if the lease is expired or held by the same process.
     * If the lease is expired, it creates a new lease. If the lease is held by the same process, it renews the lease.
     * If the lease is held by another process, then an exception is thrown.
     *
     * @throws LeaseAcquisitionError - If the lease is already acquired by another process or an error occurs during acquisition.
     */
    acquire(): Promise<void>;
    /**
     * Attempts to acquire the lease, by calling the acquire method. If an exception is thrown, it is caught and false is returned.
     * If the lease is successfully acquired, true is returned; otherwise, false is returned.
     *
     * @returns true if the lease is successfully acquired; otherwise, false.
     */
    tryAcquire(): Promise<boolean>;
    /**
     * Renews the lease. If the lease is expired or held by the same process, it creates or renews the lease.
     * If the lease is held by another process, then an exception is thrown.
     *
     * @throws LeaseAcquisitionError - If the lease is already acquired by another process or an error occurs during renewal.
     */
    renew(): Promise<void>;
    /**
     * Attempts to renew the lease, by calling the renew method. If an exception is thrown, it is caught and false is returned.
     * If the lease is successfully renewed, true is returned; otherwise, false is returned.
     *
     * @returns true if the lease is successfully renewed; otherwise, false.
     */
    tryRenew(): Promise<boolean>;
    /**
     * Releases the lease. If the lease is expired or held by the same process, it deletes the lease.
     * If the lease is held by another process, then an exception is thrown.
     *
     * @throws LeaseRelinquishmentError - If the lease is already acquired by another process or an error occurs during relinquishment.
     */
    release(): Promise<void>;
    /**
     * Attempts to release the lease, by calling the release method. If an exception is thrown, it is caught and false is returned.
     * If the lease is successfully released, true is returned; otherwise, false is returned.
     *
     * @returns true if the lease is successfully released; otherwise, false.
     */
    tryRelease(): Promise<boolean>;
    /**
     * Checks if the lease is acquired. If the lease is acquired and not expired, it returns true; otherwise, false.
     *
     * @returns true if the lease is acquired and not expired; otherwise, false.
     */
    isAcquired(): Promise<boolean>;
    /**
     * Checks if the lease is expired. If the lease is expired, it returns true; otherwise, false.
     * This method does not verify if the lease is acquired by the current process.
     *
     * @returns true if the lease is expired; otherwise, false.
     */
    isExpired(): Promise<boolean>;
}
/**
 * Copyright (C) 2024 Hedera Hashgraph, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the ""License"");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an ""AS IS"" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
export interface LeaseRenewalService {
    /**
     * Determines if a lease renewal is scheduled.
     * @param scheduleId - the unique identifier of the scheduled lease renewal.
     * @returns true if the lease renewal is scheduled; false otherwise.
     */
    isScheduled(scheduleId: number): Promise<boolean>;
    /**
     * Schedules a lease renewal.
     * @param lease - the lease to be renewed.
     * @returns the unique identifier of the scheduled lease renewal.
     */
    schedule(lease: Lease): Promise<number>;
    /**
     * Cancels a scheduled lease renewal.
     * @param scheduleId - the unique identifier of the scheduled lease renewal.
     * @returns true if the lease renewal was successfully cancelled; false otherwise.
     */
    cancel(scheduleId: number): Promise<boolean>;
    /**
     * Cancels all scheduled lease renewals.
     * @returns a map of the unique identifiers of the scheduled lease renewals and their cancellation status.
     */
    cancelAll(): Promise<Map<number, boolean>>;
    /**
     * Calculates the delay before the next lease renewal.
     * @param lease - the lease to be renewed.
     * @returns the delay in milliseconds.
     */
    calculateRenewalDelay(lease: Lease): Duration;
}