import { ConfigService } from '@nestjs/config';
import { Repository } from 'typeorm';
import { Session } from './entities/session.entity';
export declare class SessionOwnershipService {
    private readonly sessions;
    private readonly configService?;
    private readonly logger;
    private heartbeat?;
    private readonly owned;
    private onLeaseLost?;
    private lossDetectionSuspended;
    private engineLiveness?;
    constructor(sessions: Repository<Session>, configService?: ConfigService | undefined);
    get nodeId(): string;
    get nodeUrl(): string;
    private get leaseTtlMs();
    private get heartbeatMs();
    claimableWhere(now?: Date): Array<Record<string, unknown>>;
    claimable(ids: string[]): Promise<string[]>;
    claim(sessionId: string): Promise<boolean>;
    release(sessionId: string): Promise<void>;
    releaseAll(): Promise<void>;
    startHeartbeat(): void;
    stopHeartbeat(): void;
    onLeaseLoss(handler: (sessionIds: string[]) => Promise<void> | void): void;
    suspendLossDetection(): () => void;
    setEngineLiveness(probe: (sessionId: string) => boolean): void;
    renew(): Promise<void>;
    ownedByOtherLiveNode(session: Pick<Session, 'nodeId' | 'leaseExpiresAt'>, now?: Date): boolean;
    lapsedHeldByOthers(now?: Date): Promise<Session[]>;
    isHeldByOtherNode(sessionId: string, now?: Date): Promise<boolean>;
    heldByOtherNodes(now?: Date): Promise<string[]>;
    ownedIds(): string[];
    owns(sessionId: string): boolean;
}
export declare const nodeOwnsSession: (ownership: Pick<SessionOwnershipService, "owns"> | undefined, sessionId: string) => boolean;