ms-nestjs-eureka/dist/discovery/discovery.service.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 DiscoveryService_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.DiscoveryService = void 0;
const common_1 = require("@nestjs/common");
const eureka_service_1 = require("../eureka.service");
let DiscoveryService = DiscoveryService_1 = class DiscoveryService {
    constructor(eurekaService) {
        this.eurekaService = eurekaService;
        this.logger = new common_1.Logger(DiscoveryService_1.name);
    }
    getUpInstance(instances, appId) {
        const upInstances = instances.filter((_) => _.status === 'UP');
        if (upInstances.length === 0) {
            this.logger.error(`No UP instance found for ${appId}`);
            return null;
        }
        const instance = upInstances[0];
        const port = this.getPortFromInstance(instance);
        this.logger.log(`Found UP instance for ${appId}: ${instance.hostName}:${port}`);
        return Object.assign(Object.assign({}, instance), { port });
    }
    getPortFromInstance(instance) {
        if (instance.port && instance.port.port !== undefined) {
            return instance.port.port;
        }
        else if (instance.port && instance.port.$ !== undefined) {
            return instance.port.$;
        }
        else if (typeof instance.port === 'number') {
            return instance.port;
        }
        return undefined;
    }
    async getInstanceByAppId(appId) {
        await this.eurekaService.isReady();
        const client = this.eurekaService.getClient();
        const instances = client.getInstancesByAppId(appId);
        return this.getUpInstance(instances, appId);
    }
    async getInstancesByVipAddress(vipAddress) {
        await this.eurekaService.isReady();
        const client = this.eurekaService.getClient();
        const instances = client.getInstancesByVipAddress(vipAddress);
        return this.getUpInstance(instances, vipAddress);
    }
};
exports.DiscoveryService = DiscoveryService;
exports.DiscoveryService = DiscoveryService = DiscoveryService_1 = __decorate([
    (0, common_1.Injectable)(),
    __metadata("design:paramtypes", [eureka_service_1.EurekaService])
], DiscoveryService);
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