import { OnModuleDestroy } from "@nestjs/common";
/**
 * Interface for lock service implementations.
 * @template T The type of lock object returned by the service.
 */
export interface LockService<T> extends OnModuleDestroy {
    /**
     * Acquires a lock on the given resource.
     * @param resource - The resource to lock.
     * @param ttl - The time-to-live (TTL) of the lock in milliseconds.
     * @returns A promise that resolves to the lock object.
     */
    acquireLock(resource: string, ttl: number): Promise<T>;
    /**
     * Releases a lock on the given resource.
     * @param lock - The lock object to release.
     */
    releaseLock(lock: T): Promise<void>;
    /**
     * Runs a function with a lock on the given resource.
     * @param resource - The resource to lock.
     * @param ttl - The time-to-live (TTL) of the lock in milliseconds.
     * @param fn - The function to run with the lock.
     * @returns A promise that resolves to the result of the function.
     */
    runWithLock<T>(resource: string, ttl: number, fn: () => Promise<T>): Promise<T>;
    /**
     * Called when the module is destroyed.
     */
    onModuleDestroy(): Promise<void>;
}
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