nest-request-interceptor/dist/interceptors/http.interceptor.js

Lightweight HTTP and RPC request logging interceptors for NestJS with decorators to skip or deduplicate logs.

"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 __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
var HTTPInterceptor_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.HTTPInterceptor = void 0;
const common_1 = require("@nestjs/common");
const core_1 = require("@nestjs/core");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
let HTTPInterceptor = HTTPInterceptor_1 = class HTTPInterceptor {
    reflector;
    logger = new common_1.Logger(HTTPInterceptor_1.name);
    noiseCache = new Map();
    constructor(reflector) {
        this.reflector = reflector;
    }
    intercept(context, next) {
        const startTime = Date.now();
        const skip = this.reflector
            ? this.reflector.getAllAndOverride("skip-request-interceptor", [
                context.getHandler(),
                context.getClass()
            ])
            : false;
        const skipNoise = this.reflector
            ? this.reflector.getAllAndOverride("skip-noise-interceptor", [
                context.getHandler(),
                context.getClass()
            ])
            : false;
        const http = context.switchToHttp();
        const req = http.getRequest();
        const res = http.getResponse();
        return next.handle().pipe((0, operators_1.tap)(() => {
            if (skip)
                return;
            const duration = Date.now() - startTime;
            const statusCodeColor = this.getStatusCodeColor(res.statusCode);
            const logLine = `\x1b[34m${req.method}\x1b[0m ${req.url} ${statusCodeColor || "-"} ${duration}ms`;
            if (skipNoise) {
                const key = `${req.method}:${req.url}`;
                const sig = `${res.statusCode}`;
                if (this.noiseCache.get(key) === sig)
                    return;
                this.noiseCache.set(key, sig);
            }
            this.logger.log(logLine);
        }), (0, operators_1.catchError)(error => {
            if (!error.status || error.status >= 500)
                console.error(error);
            const duration = Date.now() - startTime;
            const statusCode = error.status || error.statusCode || common_1.HttpStatus.INTERNAL_SERVER_ERROR;
            const statusCodeColor = this.getStatusCodeColor(statusCode);
            let message = error.message || error;
            if (error.response?.message) {
                if (typeof error.response.message === "string")
                    message = error.response.message;
                else
                    message = error.response.message.join(", ");
            }
            this.logger.error(`\x1b[34m${req.method}\x1b[0m ${req.url} ${statusCodeColor || "-"} ${res.getHeader("content-length") || "-"} ${duration}ms \x1b[33m${message}\x1b[0m`);
            return (0, rxjs_1.throwError)(() => error);
        }));
    }
    /**
     * Returns an ANSI color-coded string for the given HTTP status code.
     *
     * Colors:
     * - Green (2xx): Successful responses
     * - Blue (3xx): Redirections
     * - Yellow (4xx): Client errors
     * - Red (5xx): Server errors
     *
     * @param {number} statusCode - HTTP response status code.
     * @returns {string} Color-coded status code string.
     */
    getStatusCodeColor(statusCode) {
        if (statusCode >= 200 && statusCode < 300) {
            return `\x1b[32m${statusCode}\x1b[0m`; // Green for 2xx
        }
        else if (statusCode >= 300 && statusCode < 400) {
            return `\x1b[34m${statusCode}\x1b[0m`; // Blue for 3xx
        }
        else if (statusCode >= 400 && statusCode < 500) {
            return `\x1b[33m${statusCode}\x1b[0m`; // Yellow for 4xx
        }
        else if (statusCode >= 500) {
            return `\x1b[31m${statusCode}\x1b[0m`; // Red for 5xx
        }
        else {
            return `${statusCode}`; // Default no color
        }
    }
};
exports.HTTPInterceptor = HTTPInterceptor;
exports.HTTPInterceptor = HTTPInterceptor = HTTPInterceptor_1 = __decorate([
    (0, common_1.Injectable)(),
    __param(0, (0, common_1.Optional)()),
    __param(0, (0, common_1.Inject)(core_1.Reflector)),
    __metadata("design:paramtypes", [core_1.Reflector])
], HTTPInterceptor);
//# sourceMappingURL=http.interceptor.js.map