import { IOpenable } from 'pip-services3-commons-node';
import { IUnreferenceable } from 'pip-services3-commons-node';
import { IConfigurable } from 'pip-services3-commons-node';
import { IReferenceable } from 'pip-services3-commons-node';
import { IReferences } from 'pip-services3-commons-node';
import { ConfigParams } from 'pip-services3-commons-node';
import { DependencyResolver } from 'pip-services3-commons-node';
import { CompositeLogger } from 'pip-services3-components-node';
import { CompositeCounters } from 'pip-services3-components-node';
import { CounterTiming } from 'pip-services3-components-node';
import { Schema } from 'pip-services3-commons-node';
import { HttpEndpoint } from './HttpEndpoint';
import { IRegisterable } from './IRegisterable';
import { ISwaggerService } from './ISwaggerService';
/**
 * Abstract service that receives remove calls via HTTP/REST protocol.
 *
 * ### Configuration parameters ###
 *
 * - base_route:              base route for remote URI
 * - dependencies:
 *   - endpoint:              override for HTTP Endpoint dependency
 *   - controller:            override for Controller dependency
 * - connection(s):
 *   - discovery_key:         (optional) a key to retrieve the connection from [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/connect.idiscovery.html IDiscovery]]
 *   - protocol:              connection protocol: http or https
 *   - host:                  host name or IP address
 *   - port:                  port number
 *   - uri:                   resource URI or connection string with all parameters in it
 * - credential - the HTTPS credentials:
 *   - ssl_key_file:         the SSL private key in PEM
 *   - ssl_crt_file:         the SSL certificate in PEM
 *   - ssl_ca_file:          the certificate authorities (root cerfiticates) in PEM
 *
 * ### References ###
 *
 * - <code>\*:logger:\*:\*:1.0</code>               (optional) [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/log.ilogger.html ILogger]] components to pass log messages
 * - <code>\*:counters:\*:\*:1.0</code>             (optional) [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/count.icounters.html ICounters]] components to pass collected measurements
 * - <code>\*:discovery:\*:\*:1.0</code>            (optional) [[https://pip-services3-node.github.io/pip-services3-components-node/interfaces/connect.idiscovery.html IDiscovery]] services to resolve connection
 * - <code>\*:endpoint:http:\*:1.0</code>          (optional) [[HttpEndpoint]] reference
 *
 * @see [[RestClient]]
 *
 * ### Example ###
 *
 *     class MyRestService extends RestService {
 *        private _controller: IMyController;
 *        ...
 *        public constructor() {
 *           base();
 *           this._dependencyResolver.put(
 *               "controller",
 *               new Descriptor("mygroup","controller","*","*","1.0")
 *           );
 *        }
 *
 *        public setReferences(references: IReferences): void {
 *           base.setReferences(references);
 *           this._controller = this._dependencyResolver.getRequired<IMyController>("controller");
 *        }
 *
 *        public register(): void {
 *            registerRoute("get", "get_mydata", null, (req, res) => {
 *                let correlationId = req.param("correlation_id");
 *                let id = req.param("id");
 *                this._controller.getMyData(correlationId, id, this.sendResult(req, res));
 *            });
 *            ...
 *        }
 *     }
 *
 *     let service = new MyRestService();
 *     service.configure(ConfigParams.fromTuples(
 *         "connection.protocol", "http",
 *         "connection.host", "localhost",
 *         "connection.port", 8080
 *     ));
 *     service.setReferences(References.fromTuples(
 *        new Descriptor("mygroup","controller","default","default","1.0"), controller
 *     ));
 *
 *     service.open("123", (err) => {
 *        console.log("The REST service is running on port 8080");
 *     });
 */
export declare abstract class RestService implements IOpenable, IConfigurable, IReferenceable, IUnreferenceable, IRegisterable {
    private static readonly _defaultConfig;
    protected _config: ConfigParams;
    private _references;
    private _localEndpoint;
    private _opened;
    /**
     * The base route.
     */
    protected _baseRoute: string;
    /**
     * The HTTP endpoint that exposes this service.
     */
    protected _endpoint: HttpEndpoint;
    /**
     * The dependency resolver.
     */
    protected _dependencyResolver: DependencyResolver;
    /**
     * The logger.
     */
    protected _logger: CompositeLogger;
    /**
     * The performance counters.
     */
    protected _counters: CompositeCounters;
    protected _swaggerService: ISwaggerService;
    protected _swaggerEnable: boolean;
    protected _swaggerRoute: string;
    /**
     * Configures component by passing configuration parameters.
     *
     * @param config    configuration parameters to be set.
     */
    configure(config: ConfigParams): void;
    /**
     * Sets references to dependent components.
     *
     * @param references 	references to locate the component dependencies.
     */
    setReferences(references: IReferences): void;
    /**
     * Unsets (clears) previously set references to dependent components.
     */
    unsetReferences(): void;
    private createEndpoint;
    /**
     * Adds instrumentation to log calls and measure call time.
     * It returns a CounterTiming object that is used to end the time measurement.
     *
     * @param correlationId     (optional) transaction id to trace execution through call chain.
     * @param name              a method name.
     * @returns CounterTiming object to end the time measurement.
     */
    protected instrument(correlationId: string, name: string): CounterTiming;
    /**
     * Adds instrumentation to error handling.
     *
     * @param correlationId     (optional) transaction id to trace execution through call chain.
     * @param name              a method name.
     * @param err               an occured error
     * @param result            (optional) an execution result
     * @param callback          (optional) an execution callback
     */
    protected instrumentError(correlationId: string, name: string, err: any, result?: any, callback?: (err: any, result: any) => void): void;
    /**
     * Checks if the component is opened.
     *
     * @returns true if the component has been opened and false otherwise.
     */
    isOpen(): boolean;
    /**
     * Opens the component.
     *
     * @param correlationId 	(optional) transaction id to trace execution through call chain.
     * @param callback 			callback function that receives error or null no errors occured.
     */
    open(correlationId: string, callback?: (err: any) => void): void;
    /**
     * Closes component and frees used resources.
     *
     * @param correlationId 	(optional) transaction id to trace execution through call chain.
     * @param callback 			callback function that receives error or null no errors occured.
     */
    close(correlationId: string, callback?: (err: any) => void): void;
    /**
     * Creates a callback function that sends result as JSON object.
     * That callack function call be called directly or passed
     * as a parameter to business logic components.
     *
     * If object is not null it returns 200 status code.
     * For null results it returns 204 status code.
     * If error occur it sends ErrorDescription with approproate status code.
     *
     * @param req       a HTTP request object.
     * @param res       a HTTP response object.
     * @param callback function that receives execution result or error.
     */
    protected sendResult(req: any, res: any): (err: any, result: any) => void;
    /**
     * Creates a callback function that sends newly created object as JSON.
     * That callack function call be called directly or passed
     * as a parameter to business logic components.
     *
     * If object is not null it returns 201 status code.
     * For null results it returns 204 status code.
     * If error occur it sends ErrorDescription with approproate status code.
     *
     * @param req       a HTTP request object.
     * @param res       a HTTP response object.
     * @param callback function that receives execution result or error.
     */
    protected sendCreatedResult(req: any, res: any): (err: any, result: any) => void;
    /**
     * Creates a callback function that sends deleted object as JSON.
     * That callack function call be called directly or passed
     * as a parameter to business logic components.
     *
     * If object is not null it returns 200 status code.
     * For null results it returns 204 status code.
     * If error occur it sends ErrorDescription with approproate status code.
     *
     * @param req       a HTTP request object.
     * @param res       a HTTP response object.
     * @param callback function that receives execution result or error.
     */
    protected sendDeletedResult(req: any, res: any): (err: any, result: any) => void;
    /**
     * Sends error serialized as ErrorDescription object
     * and appropriate HTTP status code.
     * If status code is not defined, it uses 500 status code.
     *
     * @param req       a HTTP request object.
     * @param res       a HTTP response object.
     * @param error     an error object to be sent.
     */
    protected sendError(req: any, res: any, error: any): void;
    private appendBaseRoute;
    /**
     * Registers a route in HTTP endpoint.
     *
     * @param method        HTTP method: "get", "head", "post", "put", "delete"
     * @param route         a command route. Base route will be added to this route
     * @param schema        a validation schema to validate received parameters.
     * @param action        an action function that is called when operation is invoked.
     */
    protected registerRoute(method: string, route: string, schema: Schema, action: (req: any, res: any) => void): void;
    /**
     * Registers a route with authorization in HTTP endpoint.
     *
     * @param method        HTTP method: "get", "head", "post", "put", "delete"
     * @param route         a command route. Base route will be added to this route
     * @param schema        a validation schema to validate received parameters.
     * @param authorize     an authorization interceptor
     * @param action        an action function that is called when operation is invoked.
     */
    protected registerRouteWithAuth(method: string, route: string, schema: Schema, authorize: (req: any, res: any, next: () => void) => void, action: (req: any, res: any) => void): void;
    /**
     * Registers a middleware for a given route in HTTP endpoint.
     *
     * @param route         a command route. Base route will be added to this route
     * @param action        an action function that is called when middleware is invoked.
     */
    protected registerInterceptor(route: string, action: (req: any, res: any, next: () => void) => void): void;
    /**
     * Returns correlationId from request
     * @param req -  http request
     * @return Returns correlationId from request
     */
    getCorrelationId(req: any): string;
    /**
     * Registers all service routes in HTTP endpoint.
     *
     * This method is called by the service and must be overriden
     * in child classes.
     */
    abstract register(): void;
    protected registerOpenApiSpecFromFile(path: string): void;
    protected registerOpenApiSpec(content: string): void;
}