/// <reference types="node" />
import * as events from 'events';
import { Flow as FlowDefinition, Node, NodeDefinition, NodeDefinitions, NodeDependencyTypes } from '@chix/common';
import { ILoader, LoaderResponse } from './interfaces';
import { DependencyManager, NodeDefinitionManager, NodeDefinitionProviderMap } from './lib';
import { Dependencies, DependencyTypes, LoadDefinitionResult, LoadNodeResult, ProviderDef, Workload } from './types';
/**
 * Loader
 *
 * This is the base loader class
 * Ít can be used to implement a definition loader
 * for Chix
 *
 * @api public
 * @author Rob Halff <rob.halff@gmail.com>
 * @constructor
 */
export declare class Loader extends events.EventEmitter implements ILoader {
    getNodeSource: (provider: string, ns: string, name: string) => NodeDefinition | FlowDefinition;
    protected dependencyManager: DependencyManager;
    protected nodeDefinitionManager: NodeDefinitionManager;
    constructor();
    /**
     * This is the main method all child classes should implement.
     *
     * @param {FlowDefinition[]} _flows
     * @param {boolean} _update
     * @returns {Promise<LoaderResponse>}
     */
    load(_flows: FlowDefinition | FlowDefinition[], _update?: boolean): Promise<LoaderResponse>;
    loadNodeDefinitionFrom(provider: string, ns: string, name: string): Promise<LoadDefinitionResult>;
    /**
     * Loader itself only expects preloaded nodes.
     * There is no actual load going on.
     *
     * Remote loader *does* implement loading.
     *
     * @param {ProviderDef} providerDef
     * @returns {Promise<{nodeDef: NodeDefinition | {}}>}
     */
    loadNode(providerDef: ProviderDef): Promise<LoadNodeResult>;
    /**
     * loop the nodes, detect what provider they expect
     * if they do not have a provider we will use the default,
     * if the flow has set it's own default we will use that.
     * the default within a flow is the one without namespace
     */
    getWorkLoad(flows: FlowDefinition[], defaultProvider: string, update: boolean): Workload;
    addNodeDefinitions(identifier: string, nodeDefs: NodeDefinitions | Array<FlowDefinition | NodeDefinition>): void;
    addNodeDefinition(identifier: string, nodeDef: NodeDefinition | FlowDefinition): void;
    hasNodeDefinition(providerUrl: string, ns: string, name: string): boolean;
    getNodeDefinition(node: Node, flow: FlowDefinition): NodeDefinition | FlowDefinition;
    getNodeDefinitionFrom(provider: string, ns: string, name: string): FlowDefinition | NodeDefinition;
    saveNodeDefinition(_providerLocation: string, _nodeDefinition: NodeDefinition | FlowDefinition): void;
    getNodeDefinitions(provider?: string): NodeDefinitions | NodeDefinitionProviderMap;
    setNodeDefinitions(nodeDefinitions: NodeDefinitionProviderMap): void;
    hasDependencies(type?: DependencyTypes): boolean;
    getDependencies(type?: DependencyTypes): Dependencies | NodeDependencyTypes;
    setDependencies(dependencies: Dependencies): void;
}