nestjs-eureka/dist/discovery/discovery.interceptor.js

A NestJS module that integrate eureka-js-client

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var DiscoveryInterceptor_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.DiscoveryInterceptor = void 0;
const axios_1 = require("@nestjs/axios");
const common_1 = require("@nestjs/common");
const discovery_service_1 = require("./discovery.service");
let DiscoveryInterceptor = DiscoveryInterceptor_1 = class DiscoveryInterceptor {
    constructor(httpService, discoveryService) {
        this.httpService = httpService;
        this.discoveryService = discoveryService;
        this.logger = new common_1.Logger(DiscoveryInterceptor_1.name);
    }
    onApplicationBootstrap() {
        this.logger.debug('Injecting interceptor');
        this.interceptorNumber = this.httpService.axiosRef.interceptors.request.use(this.mapHostnameInterceptor.bind(this));
    }
    onApplicationShutdown() {
        this.logger.debug('Eject interceptor');
        this.httpService.axiosRef.interceptors.request.eject(this.interceptorNumber);
    }
    mapHostnameInterceptor(config) {
        const url = new URL(this.buildFullPath(config.baseURL, config.url));
        this.logger.debug(`Resolving URL : ${url}`);
        const target = this.discoveryService.resolveHostname(url.hostname);
        if (target) {
            url.hostname = target.host;
            url.port = target.port.toString();
        }
        config.url = url.toJSON();
        return config;
    }
    buildFullPath(baseURL, requestedURL) {
        if (baseURL && !this.isAbsoluteURL(requestedURL)) {
            return this.combineURLs(baseURL, requestedURL);
        }
        return requestedURL;
    }
    combineURLs(baseURL, relativeURL) {
        return relativeURL ? baseURL.replace(/\/+$/, '') + '/' + relativeURL.replace(/^\/+/, '') : baseURL;
    }
    isAbsoluteURL(url) {
        return /^([a-z][a-z\d\+\-\.]*:)?\/\//i.test(url);
    }
};
DiscoveryInterceptor = DiscoveryInterceptor_1 = __decorate([
    (0, common_1.Injectable)(),
    __metadata("design:paramtypes", [axios_1.HttpService, discovery_service_1.DiscoveryService])
], DiscoveryInterceptor);
exports.DiscoveryInterceptor = DiscoveryInterceptor;
//# sourceMappingURL=discovery.interceptor.js.map