import { IDynamicProperty } from "./abstractions";
import { ConfigurationManager } from "./configurationManager";
import { ConfigurationSourceBuilder } from "./configurationSourceBuilder";
import * as rx from 'rxjs';
/**
 *
* Provides dynamic properties updated when config change.
* Accessing a dynamic property is very fast. The last value is cached and updated on the fly
* from a <b>ConfigurationSource</b> at fixed interval.
* Updates are made using polling requests on a list of sources.
* <p>
* Dynamic properties are read only. You can set a value but it will be valid only as a default value.
* </p>
* <code>
* DynamicConfiguration.init().addRest("http....").startPolling();
* let i:number = DynamicConfiguration.getProperty("prop1");
* let i2:number = DynamicConfiguration.getOrDefaultProperty("prop1", 1);
* </code>
*/
export declare class DynamicConfiguration {
    /**
     * For test only - Do not use directly
     */
    private static manager;
    private static _builder;
    /**
     * subscribe for a global property changed
     */
    static readonly propertyChanged: rx.Observable<IDynamicProperty<any>>;
    /**
     * Get a property
     */
    static getProperty<T>(name: string, value?: T): IDynamicProperty<T>;
    static getChainedProperty<T>(name: string, defaultValue: T, ...fallbackPropertyNames: Array<string>): IDynamicProperty<T>;
    /**
     * get a chained property for the current service.
     * Properties chain is: service.version.name->service.name->domain.name->name
     * @param name property name
     * @param defaultValue
     * @returns {IDynamicProperty<T>}
     */
    static getChainedConfigurationProperty<T>(name: string, defaultValue?: T, commandName?: string): IDynamicProperty<T>;
    /**
     * Get a property value by name
     *
     * @static
     * @template T
     * @param {string} name
     * @returns
     *
     * @memberOf DynamicConfiguration
     */
    static getPropertyValue<T>(name: string): T;
    static init(pollingIntervalInSeconds?: number, sourceTimeoutInMs?: number): ConfigurationSourceBuilder;
    /**
     *
     * @param pollingIntervalInSeconds For test only
     */
    static reset(pollingIntervalInSeconds?: number): ConfigurationManager;
}