import { type OnApplicationShutdown, type OnModuleInit } from '@nestjs/common';
import { Model } from 'mongoose';
import { WorkflowRun } from '../schemas/workflow-run.schema';
import { WorkflowsConfigModel } from '../workflows.config';
import { TaskRunner } from './task-runner.service';
import { WorkflowRegistry } from './workflow-registry.service';
export declare class WorkflowOrchestrator implements OnModuleInit, OnApplicationShutdown {
    private readonly workflowRunModel;
    private readonly namespace;
    private readonly workflowRegistry;
    private readonly taskRunner;
    private readonly logger;
    private readonly errorHandler;
    private beatInterval;
    private heartbeatInterval;
    private readonly BEAT_INTERVAL_MS;
    private readonly HEARTBEAT_INTERVAL_MS;
    private readonly HEARTBEAT_TIMEOUT_MS;
    private readonly RETRY_DELAY_MS;
    private readonly SHUTDOWN_TIMEOUT_MS;
    private readonly currentlyExecutingWorkflows;
    private isShuttingDown;
    constructor(workflowRunModel: Model<WorkflowRun<string>>, namespace: string, workflowRegistry: WorkflowRegistry, taskRunner: TaskRunner, config: WorkflowsConfigModel);
    onModuleInit(): void;
    private startBeat;
    private startHeartbeat;
    private updateHeartbeats;
    private processWorkflows;
    private processWorkflow;
    private executeWorkflow;
    private handleTaskFailure;
    onApplicationShutdown(signal?: string): Promise<void>;
    private waitForWorkflowsToFinish;
    private stopBeat;
    private stopHeartbeat;
}
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