@loopback/express
Version:
Integrate with Express and expose middleware infrastructure for sequence and interceptors
91 lines • 3.82 kB
JavaScript
;
// Copyright IBM Corp. and LoopBack contributors 2020. All Rights Reserved.
// Node module: @loopback/express
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.ExpressServer = void 0;
const tslib_1 = require("tslib");
const core_1 = require("@loopback/core");
const http_server_1 = require("@loopback/http-server");
const debug_1 = tslib_1.__importDefault(require("debug"));
const express_1 = tslib_1.__importDefault(require("express"));
const middleware_1 = require("./middleware");
const middleware_registry_1 = require("./middleware-registry");
const types_1 = require("./types");
const debug = (0, debug_1.default)('loopback:middleware');
/**
* An Express server that provides middleware composition and injection
*/
let ExpressServer = class ExpressServer extends middleware_registry_1.BaseMiddlewareRegistry {
constructor(config, parent) {
var _a;
super(parent);
this.config = config;
this.scope = core_1.BindingScope.SERVER;
let basePath = (_a = config === null || config === void 0 ? void 0 : config.basePath) !== null && _a !== void 0 ? _a : '';
// Trim leading and trailing `/`
basePath = basePath.replace(/(^\/)|(\/$)/, '');
if (basePath)
basePath = '/' + basePath;
this.basePath = basePath;
this.expressApp = (0, express_1.default)();
if (config === null || config === void 0 ? void 0 : config.settings) {
for (const p in config === null || config === void 0 ? void 0 : config.settings) {
this.expressApp.set(p, config === null || config === void 0 ? void 0 : config.settings[p]);
}
}
this.httpServer = new http_server_1.HttpServer(this.expressApp, config);
// Set up the middleware chain as the 1st Express middleware
this.expressApp.use(this.basePath, (0, middleware_1.toExpressMiddleware)(this));
}
/**
* Some of the methods below are copied from RestServer
* TODO(rfeng): We might want to refactor some methods from RestServer into
* the base ExpressServer.
*/
get listening() {
return this.httpServer ? this.httpServer.listening : false;
}
/**
* The base url for the server, including the basePath if set. For example,
* the value will be 'http://localhost:3000/api' if `basePath` is set to
* '/api'.
*/
get url() {
let serverUrl = this.rootUrl;
if (!serverUrl)
return serverUrl;
serverUrl = serverUrl + this.basePath;
return serverUrl;
}
/**
* The root url for the server without the basePath. For example, the value
* will be 'http://localhost:3000' regardless of the `basePath`.
*/
get rootUrl() {
var _a;
return (_a = this.httpServer) === null || _a === void 0 ? void 0 : _a.url;
}
async start() {
await this.httpServer.start();
debug('ExpressServer listening at %s', this.httpServer.url);
}
stop() {
return this.httpServer.stop();
}
/**
* Retrieve the middleware context from the request
* @param request - Request object
*/
getMiddlewareContext(request) {
return (0, types_1.getMiddlewareContext)(request);
}
};
exports.ExpressServer = ExpressServer;
exports.ExpressServer = ExpressServer = tslib_1.__decorate([
tslib_1.__param(0, (0, core_1.inject)(core_1.CoreBindings.APPLICATION_CONFIG.deepProperty('express'))),
tslib_1.__param(1, (0, core_1.inject)(core_1.CoreBindings.APPLICATION_INSTANCE)),
tslib_1.__metadata("design:paramtypes", [Object, core_1.Context])
], ExpressServer);
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