@hemantwasthere/monitoring-sdk/dist/middleware/nestjs.js

Centralized monitoring SDK for Node.js applications with Prometheus, Loki, and Grafana integration

"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;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.MonitoringInterceptor = void 0;
const common_1 = require("@nestjs/common");
const operators_1 = require("rxjs/operators");
const metrics_1 = require("../metrics");
let MonitoringInterceptor = class MonitoringInterceptor {
    constructor() {
        this.metricsService = metrics_1.MetricsService.getInstance();
    }
    intercept(context, next) {
        const request = context.switchToHttp().getRequest();
        const response = context.switchToHttp().getResponse();
        const startTime = Date.now();
        const method = request.method;
        const route = request.route?.path || request.url;
        return next.handle().pipe((0, operators_1.tap)({
            next: () => {
                const duration = Date.now() - startTime;
                const statusCode = response.statusCode;
                this.metricsService.recordHttpRequest(method, route, statusCode, duration);
            },
            error: (error) => {
                const duration = Date.now() - startTime;
                const statusCode = error.status || 500;
                this.metricsService.recordHttpRequest(method, route, statusCode, duration);
            },
        }));
    }
};
exports.MonitoringInterceptor = MonitoringInterceptor;
exports.MonitoringInterceptor = MonitoringInterceptor = __decorate([
    (0, common_1.Injectable)()
], MonitoringInterceptor);