Initial Commit

.eslintrc.js

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+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    tsconfigRootDir : __dirname, 
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended',
+  ],
+  root: true,
+  env: {
+    node: true,
+    jest: true,
+  },
+  ignorePatterns: ['.eslintrc.js'],
+  rules: {
+    '@typescript-eslint/interface-name-prefix': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+  },
+};

.gitignore

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+# compiled output
+/dist
+/node_modules
+
+# Logs
+logs
+*.log
+npm-debug.log*
+pnpm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json

.prettierrc

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+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

README.md

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+<p align="center">
+  <a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo-small.svg" width="200" alt="Nest Logo" /></a>
+</p>
+
+[circleci-image]: https://img.shields.io/circleci/build/github/nestjs/nest/master?token=abc123def456
+[circleci-url]: https://circleci.com/gh/nestjs/nest
+
+  <p align="center">A progressive <a href="http://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
+    <p align="center">
+<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
+<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/l/@nestjs/core.svg" alt="Package License" /></a>
+<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/dm/@nestjs/common.svg" alt="NPM Downloads" /></a>
+<a href="https://circleci.com/gh/nestjs/nest" target="_blank"><img src="https://img.shields.io/circleci/build/github/nestjs/nest/master" alt="CircleCI" /></a>
+<a href="https://coveralls.io/github/nestjs/nest?branch=master" target="_blank"><img src="https://coveralls.io/repos/github/nestjs/nest/badge.svg?branch=master#9" alt="Coverage" /></a>
+<a href="https://discord.gg/G7Qnnhy" target="_blank"><img src="https://img.shields.io/badge/discord-online-brightgreen.svg" alt="Discord"/></a>
+<a href="https://opencollective.com/nest#backer" target="_blank"><img src="https://opencollective.com/nest/backers/badge.svg" alt="Backers on Open Collective" /></a>
+<a href="https://opencollective.com/nest#sponsor" target="_blank"><img src="https://opencollective.com/nest/sponsors/badge.svg" alt="Sponsors on Open Collective" /></a>
+  <a href="https://paypal.me/kamilmysliwiec" target="_blank"><img src="https://img.shields.io/badge/Donate-PayPal-ff3f59.svg"/></a>
+    <a href="https://opencollective.com/nest#sponsor"  target="_blank"><img src="https://img.shields.io/badge/Support%20us-Open%20Collective-41B883.svg" alt="Support us"></a>
+  <a href="https://twitter.com/nestframework" target="_blank"><img src="https://img.shields.io/twitter/follow/nestframework.svg?style=social&label=Follow"></a>
+</p>
+  <!--[![Backers on Open Collective](https://opencollective.com/nest/backers/badge.svg)](https://opencollective.com/nest#backer)
+  [![Sponsors on Open Collective](https://opencollective.com/nest/sponsors/badge.svg)](https://opencollective.com/nest#sponsor)-->
+
+## Description
+
+[Nest](https://github.com/nestjs/nest) framework TypeScript starter repository.
+
+## Installation
+
+```bash
+$ npm install
+```
+
+## Running the app
+
+```bash
+# development
+$ npm run start
+
+# watch mode
+$ npm run start:dev
+
+# production mode
+$ npm run start:prod
+```
+
+## Test
+
+```bash
+# unit tests
+$ npm run test
+
+# e2e tests
+$ npm run test:e2e
+
+# test coverage
+$ npm run test:cov
+```
+
+## Support
+
+Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
+
+## Stay in touch
+
+- Author - [Kamil Myśliwiec](https://kamilmysliwiec.com)
+- Website - [https://nestjs.com](https://nestjs.com/)
+- Twitter - [@nestframework](https://twitter.com/nestframework)
+
+## License
+
+Nest is [MIT licensed](LICENSE).

nest-cli.json

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+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "assets": [
+      "**/*.proto"
+    ],
+    "watchAssets": true
+  }
+}

package.json

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+{
+  "name": "micro-producer",
+  "version": "0.0.1",
+  "description": "",
+  "author": "",
+  "private": true,
+  "license": "UNLICENSED",
+  "scripts": {
+    "prebuild": "rimraf dist",
+    "build": "nest build",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "start": "nest start",
+    "start:dev": "nest start --watch",
+    "start:debug": "nest start --debug --watch",
+    "start:prod": "node dist/main",
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:cov": "jest --coverage",
+    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
+    "test:e2e": "jest --config ./test/jest-e2e.json"
+  },
+  "dependencies": {
+    "@grpc/grpc-js": "^1.7.3",
+    "@grpc/proto-loader": "^0.7.3",
+    "@nestjs/common": "^9.0.0",
+    "@nestjs/core": "^9.0.0",
+    "@nestjs/microservices": "^9.2.0",
+    "@nestjs/passport": "^9.0.0",
+    "@nestjs/platform-express": "^9.0.0",
+    "@nestjs/swagger": "^6.1.3",
+    "kafkajs": "^2.2.2",
+    "passport": "^0.6.0",
+    "passport-local": "^1.0.0",
+    "reflect-metadata": "^0.1.13",
+    "rimraf": "^3.0.2",
+    "rxjs": "^7.2.0"
+  },
+  "devDependencies": {
+    "@nestjs/cli": "^9.0.0",
+    "@nestjs/schematics": "^9.0.0",
+    "@nestjs/testing": "^9.0.0",
+    "@types/express": "^4.17.13",
+    "@types/jest": "28.1.8",
+    "@types/node": "^16.0.0",
+    "@types/passport-local": "^1.0.34",
+    "@types/supertest": "^2.0.11",
+    "@typescript-eslint/eslint-plugin": "^5.0.0",
+    "@typescript-eslint/parser": "^5.0.0",
+    "eslint": "^8.0.1",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-prettier": "^4.0.0",
+    "jest": "28.1.3",
+    "prettier": "^2.3.2",
+    "source-map-support": "^0.5.20",
+    "supertest": "^6.1.3",
+    "ts-jest": "28.0.8",
+    "ts-loader": "^9.2.3",
+    "ts-node": "^10.0.0",
+    "tsconfig-paths": "4.1.0",
+    "typescript": "^4.7.4"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": [
+      "**/*.(t|j)s"
+    ],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
+  }
+}

src/app.controller.spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+describe('AppController', () => {
+  let appController: AppController;
+
+  beforeEach(async () => {
+    const app: TestingModule = await Test.createTestingModule({
+      controllers: [AppController],
+      providers: [AppService],
+    }).compile();
+
+    appController = app.get<AppController>(AppController);
+  });
+
+  describe('root', () => {
+    it('should return "Hello World!"', () => {
+      expect(appController.getHello()).toBe('Hello World!');
+    });
+  });
+});

src/app.controller.ts

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+import { Metadata, ServerUnaryCall } from '@grpc/grpc-js';
+import { Controller, Get, Param, Post, Body } from '@nestjs/common';
+import { GrpcMethod } from '@nestjs/microservices';
+import { lastValueFrom, map, Observable, Subscription } from 'rxjs';
+import { AppService } from './app.service';
+import { CreateUserDto } from './dto/user/create-user.dto';
+import { FindUserDto, FindUserWithUsernameDto } from './dto/user/find-user.dto';
+import { User } from './model/User';
+
+@Controller('users')
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @GrpcMethod('UsersService', 'FindUserById')
+  getUserById(
+    data: FindUserDto,
+    metadata: Metadata,
+    call: ServerUnaryCall<any, any>,
+  ): Observable<User> {
+    const user: Observable<User> = this.appService.getUserById(data.userId);
+    return user;
+  }
+  @GrpcMethod('UsersService', 'FindUserByUsername')
+  getUserByUsername(
+    data: FindUserWithUsernameDto,
+    metadata: Metadata,
+    call: ServerUnaryCall<any, any>,
+  ): Observable<User> {
+    return this.appService.getUserByUsername(data.username);
+  }
+  @GrpcMethod('UsersService', 'CreateUser')
+  createUser(
+    data: CreateUserDto,
+    metadata: Metadata,
+    call: ServerUnaryCall<any, any>,
+  ): Observable<User> {
+    return this.appService.createUser(data);
+  }
+}

src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+import { AuthModule } from './auth/auth.module';
+
+@Module({
+  controllers: [AppController],
+  providers: [AppService],
+  exports:[AppService]
+})
+export class AppModule {}

src/app.service.ts

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+import { Injectable } from '@nestjs/common';
+import { Client, ClientKafka, Transport } from '@nestjs/microservices';
+import { Observable } from 'rxjs';
+import { CreateUserDto } from './dto/user/create-user.dto';
+import { FindUserDto, FindUserWithUsernameDto } from './dto/user/find-user.dto';
+import { User } from './model/User';
+
+@Injectable()
+export class AppService {
+  @Client({
+    transport: Transport.KAFKA,
+    options: {
+      client: {
+        clientId: 'mini-producer',
+        brokers: ['localhost:9092'],
+      },
+      consumer: {
+        groupId: 'consumer', // consumer same as in micro service
+      },
+    },
+  })
+  client: ClientKafka;
+  serviceName: string = 'USER';
+  topics = {
+    find: `find-${this.serviceName}`,
+    findUsername: `findUsername-${this.serviceName}`,
+    create: `create-${this.serviceName}`,
+  };
+
+  async onModuleInit() {
+    this.client.subscribeToResponseOf(this.topics.find);
+    this.client.subscribeToResponseOf(this.topics.findUsername);
+    this.client.subscribeToResponseOf(this.topics.create);
+    await this.client.connect();
+  }
+
+  getUserById(userId: number): Observable<User> {
+    let findUserDto: FindUserDto = { userId };
+    return this.client.send(this.topics.find, findUserDto);
+  }
+
+  getUserByUsername(username:string):Observable<User>{
+    let findUserWithUsernameDto: FindUserWithUsernameDto = { username };
+    return this.client.send(this.topics.findUsername, findUserWithUsernameDto);
+  }
+
+  createUser(newUserDto: CreateUserDto): Observable<User> {
+    return this.client.send(this.topics.create, newUserDto);
+  }
+}

src/auth/auth.module.ts

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+import { Module } from '@nestjs/common';
+import { AppModule } from 'src/app.module';
+import { AuthService } from './auth.service';
+import { LocalStrategy } from './local.strategy';
+import {PassportModule} from "@nestjs/passport"
+
+@Module({
+  imports:[AppModule,PassportModule],
+  providers: [AuthService,LocalStrategy]
+})
+export class AuthModule {}

src/auth/auth.service.spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { AuthService } from './auth.service';
+
+describe('AuthService', () => {
+  let service: AuthService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [AuthService],
+    }).compile();
+
+    service = module.get<AuthService>(AuthService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

src/auth/auth.service.ts

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+import { Injectable } from '@nestjs/common';
+import { AppService } from 'src/app.service';
+import { User } from 'src/model/User';
+
+@Injectable()
+export class AuthService {
+  constructor(private appService: AppService) {}
+  user: User;
+
+  validateUser(username: string, pass: string): User {
+    this.appService
+      .getUserByUsername(username)
+      .subscribe((_user) => (this.user = _user));
+    if (!this.user) {
+      if (this.user && this.user.password === pass) {
+        const { password, ...result } = this.user;
+        return this.user;
+      }
+    }
+    return null;
+  }
+}

src/auth/local.strategy.ts

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+import { Injectable, UnauthorizedException } from '@nestjs/common';
+import { PassportStrategy } from '@nestjs/passport';
+import { AuthService } from './auth.service';
+import { Strategy } from 'passport-local';
+
+@Injectable()
+export class LocalStrategy extends PassportStrategy(Strategy) {
+  constructor(private authService: AuthService) {
+    super();
+  }
+
+  async validate(username: string, password: string): Promise<any> {
+    const user = this.authService.validateUser(username, password);
+    if (!user) {
+      throw new UnauthorizedException();
+    }
+    return user;
+  }
+}

src/dto/response/response.dto.ts

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+export class Response<T> {
+  error: boolean;
+  message: string;
+  data: T;
+}

src/dto/user/create-user.dto.ts

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+export class CreateUserDto {
+  name?: string;
+  username: string;
+  email: string;
+  phone?: string;
+  website?: string;
+  company?: any;
+  message?: string;
+}

src/dto/user/find-user.dto.ts

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+export class FindUserDto {
+  userId: number;
+}
+
+export class FindUserWithUsernameDto {
+  username: string;
+}

src/dto/user/login-user.dto.ts

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+export class LoginUserDto {
+  username: string;
+  password: string;
+}

src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { MicroserviceOptions, Transport } from '@nestjs/microservices';
+import { join } from 'path';
+import { AppModule } from './app.module';
+
+async function bootstrap() {
+  const BASE_URL = 'localhost:3060';
+
+  const app = await NestFactory.createMicroservice<MicroserviceOptions>(
+    AppModule,
+    {
+      transport: Transport.GRPC,
+      options: {
+        url: BASE_URL,
+        package: 'user',
+        protoPath: join(__dirname, '../src/proto/user.proto'),
+      },
+    },
+  );
+
+  await app.listen();
+}
+bootstrap();

src/model/User.ts

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+export interface  User {
+    id : number,
+    name?: string,
+    username?: string,
+    email?: string,
+    phone?: string,
+    website?: string,
+    company?: any,
+    message?:string
+    password?:string,
+  }

src/proto/user.proto

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+syntax = "proto3";
+
+package user;
+
+service UsersService {
+  //R
+  rpc FindUserById (userById) returns (User) {}
+  rpc FindUserByUsername (userByUsername) returns (User) {}
+  //C
+  rpc CreateUser (createUserDto) returns (User) {}
+  //Auth
+  rpc LoginUser (loginUserDto) returns (User) {}
+}
+
+message userById { 
+  int32 userId = 1; 
+}
+
+message userByUsername { 
+  int32 username = 1; 
+}
+message loginUserDto {
+  string username =1;
+  string password =2;
+}
+
+message createUserDto { 
+    string name =1;
+   string username=2;
+   string email=3;
+   string phone=4 ;
+   string website=5;
+   string message= 6;
+   string password=7;
+}
+
+
+message User {
+  int32 id = 1;
+  string name = 2;
+   string username=3;
+   string email=4;
+   string phone=5 ;
+   string website=6;
+   string message= 7;
+}

test/app.e2e-spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { INestApplication } from '@nestjs/common';
+import * as request from 'supertest';
+import { AppModule } from './../src/app.module';
+
+describe('AppController (e2e)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it('/ (GET)', () => {
+    return request(app.getHttpServer())
+      .get('/')
+      .expect(200)
+      .expect('Hello World!');
+  });
+});

test/jest-e2e.json

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+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}

tsconfig.build.json

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+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "allowSyntheticDefaultImports": true,
+    "target": "es2017",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true,
+    "skipLibCheck": true,
+    "strictNullChecks": false,
+    "noImplicitAny": false,
+    "strictBindCallApply": false,
+    "forceConsistentCasingInFileNames": false,
+    "noFallthroughCasesInSwitch": false
+  }
+}