@websdr/nestjs-microservice

Reusable NestJS building blocks for the WebSDR backend.

This package is published as an npm module and is intended to be embedded into your NestJS app (import modules, reuse guards/services), not run as a standalone server by itself.

What’s inside

• Auth (/auth): AuthModule, AuthService, JwtAuthGuard, DTOs and interfaces.
• Users (/users): UsersModule and UsersService.
• Common (/common): a small logging helper module (LoggingModule, createContextLogger) and LoggerLevelService/parseLogLevels.

Install

npm install @websdr/nestjs-microservice

pnpm add @websdr/nestjs-microservice

yarn add @websdr/nestjs-microservice

Importing

This package is published as ESM (see type: module).

Import from the root:

import { AuthModule, UsersModule, JwtAuthGuard } from '@websdr/nestjs-microservice';

Or use subpath exports:

import { AuthModule, JwtAuthGuard } from '@websdr/nestjs-microservice/auth';
import { UsersModule } from '@websdr/nestjs-microservice/users';
import { LoggingModule, LOGGER } from '@websdr/nestjs-microservice/common';

Usage

1) Import modules in your Nest app

import { Module } from '@nestjs/common';
import { AuthModule, UsersModule } from '@websdr/nestjs-microservice';

@Module({
  imports: [UsersModule, AuthModule],
})
export class AppModule {}

2) Protect controllers with JwtAuthGuard

JwtAuthGuard validates a JWT (Passport strategy) and also checks token revocation via AuthService.isRevoked(). It looks for the token in either:

• req.cookies.jwt, or
• Authorization: Bearer <token>

import { Controller, Get, UseGuards } from '@nestjs/common';
import { JwtAuthGuard } from '@websdr/nestjs-microservice/auth';

@Controller('private')
export class PrivateController {
  @UseGuards(JwtAuthGuard)
  @Get()
  getPrivateData() {
    return { ok: true };
  }
}

Accessing the authenticated user (req.user) with proper typing:

import { Controller, Get, Req, UseGuards } from '@nestjs/common';
import type { AuthRequest } from '@websdr/nestjs-microservice/auth';
import { JwtAuthGuard } from '@websdr/nestjs-microservice/auth';

@Controller('me')
export class MeController {
  @UseGuards(JwtAuthGuard)
  @Get()
  getMe(@Req() req: AuthRequest) {
    return req.user;
  }
}

3) Provide a logger instance via LoggingModule

LoggingModule.forRoot() registers a logger instance under the LOGGER token. createContextLogger() wraps a base logger and adds Nest-like context.

import { Module, Logger } from '@nestjs/common';
import { LoggingModule } from '@websdr/nestjs-microservice/common';

@Module({
  imports: [LoggingModule.forRoot(new Logger())],
})
export class AppModule {}

Injecting the base logger and creating a context-aware wrapper:

import { Inject, Injectable } from '@nestjs/common';
import type { LoggerService } from '@nestjs/common';
import { LOGGER, createContextLogger } from '@websdr/nestjs-microservice/common';

@Injectable()
export class DeviceService {
  private readonly logger: LoggerService;

  constructor(@Inject(LOGGER) base: any) {
    this.logger = createContextLogger(base, DeviceService.name);
  }

  open() {
    this.logger.log('opening device');
  }
}

4) Configure log levels

parseLogLevels() parses strings like "debug,warn,error", as well as "all"/"on" and "off"/"false".

import { Logger } from '@nestjs/common';
import { parseLogLevels } from '@websdr/nestjs-microservice/common';

Logger.overrideLogger(parseLogLevels(process.env.LOG_LEVELS));

If you prefer a service that can update levels at runtime:

import { NestFactory } from '@nestjs/core';
import { LoggerLevelService } from '@websdr/nestjs-microservice/common';
import { AppModule } from './app.module';

const app = await NestFactory.create(AppModule);
app.get(LoggerLevelService).setLevelsFromString(process.env.LOG_LEVELS);
await app.listen(3000);

Public API (summary)

• @websdr/nestjs-microservice/auth:
  • AuthModule
  • JwtAuthGuard
  • DTOs: LoginDto
  • Types: AuthUser, AuthRequest
• @websdr/nestjs-microservice/users:
  • UsersModule
• @websdr/nestjs-microservice/common:
  • LoggingModule, LOGGER, createContextLogger
  • LoggerLevelService, parseLogLevels, LoggerLevels

Compatibility notes

• NestJS: built against NestJS v11.
• TypeScript: ships *.d.ts typings.
• ESM: package is ESM. If your app is CommonJS, use a bundler/transpiler setup that supports ESM dependencies.

Development

From the repository root:

npm install

From this package folder:

Build

npm run build

Test

npm test

Source links

This package publishes dist/ to npm. Source is available in the GitHub repository:

• Entry point: https://github.com/wavelet-lab/websdr/blob/main/packages/nestjs-microservice/src/index.ts
• Auth exports: https://github.com/wavelet-lab/websdr/blob/main/packages/nestjs-microservice/src/auth/index.ts
• Common exports: https://github.com/wavelet-lab/websdr/blob/main/packages/nestjs-microservice/src/common/index.ts
• Users exports: https://github.com/wavelet-lab/websdr/blob/main/packages/nestjs-microservice/src/users/index.ts

Package folder (GitHub): https://github.com/wavelet-lab/websdr/tree/main/packages/nestjs-microservice

License

WebSDR is MIT licensed