added gateway microservice

nest-ms-pg-auth0/.env.example

@@ -28,5 +28,14 @@ AUTH0_CLIENT_ID=CLIENT_ID
 AUTH0_AUDIENCE=AUDIENCE
 AUTH0_CLIENT_SECRET=CLIENT_SECRET
 
+# Microservices URLs
+AUTH_API_HOST=auth-dev
+AUTH_API_PORT=3001
+AUTH_API_URL=http://${AUTH_API_HOST}:${AUTH_API_PORT}/
+TODOS_API_HOST=todos-dev
+TODOS_API_PORT=3002
+TODOS_API_URL=http://${TODOS_API_HOST}:${TODOS_API_PORT}/
+
+# RabbitMQ URI and queues
 RABBIT_MQ_URI=amqp://rabbitmq:5672
 RABBIT_MQ_AUTH_QUEUE=auth

nest-ms-pg-auth0/apps/auth/src/main.ts

@@ -30,10 +30,14 @@ async function bootstrap() {
   app.enableCors();
 
   // add security HTTP headers
-  app.register(helmet);
+  app.register(
+    helmet as unknown as Parameters<NestFastifyApplication['register']>[0],
+  );
 
   // compresses response bodies
-  app.register(compression);
+  app.register(
+    compression as unknown as Parameters<NestFastifyApplication['register']>[0],
+  );
 
   // enable validation globally
   app.useGlobalPipes(new ValidationPipe({ transform: true, whitelist: true }));
@@ -62,8 +66,10 @@ async function bootstrap() {
     app.useGlobalFilters(new ErrorLoggingFilter(httpAdapterHost));
   }
 
-  await app.listen(port, configService.HOST, () => {
-    console.log(`App is running on http://${configService.HOST}:${port}`);
+  const openPort = process.env.AUTH_API_PORT ?? port;
+
+  await app.listen(openPort, configService.HOST, () => {
+    console.log(`App is running on http://${configService.HOST}:${openPort}`);
   });
 }
 bootstrap();

nest-ms-pg-auth0/apps/gateway/src/main.ts

@@ -0,0 +1,39 @@
+import fastify from 'fastify';
+import fastifyProxy, { FastifyHttpProxyOptions } from '@fastify/http-proxy';
+
+interface MicroserviceData {
+  uri: string;
+  prefix: string;
+}
+
+async function bootstrap() {
+  const fastifyServer = fastify({ logger: { level: 'trace' } });
+
+  const proxyData: FastifyHttpProxyOptions[] = [
+    { uri: `${process.env.AUTH_API_URL}`, prefix: 'auth' },
+    { uri: `${process.env.TODOS_API_URL}`, prefix: 'todos' },
+  ].map(
+    ({ uri, prefix }: MicroserviceData): FastifyHttpProxyOptions => ({
+      upstream: uri,
+      prefix: `/:version/${prefix}`,
+      rewritePrefix: `/:version/${prefix}`,
+    }),
+  );
+
+  fastifyServer.get('/', async () => {
+    return 'Hello Gateway API';
+  });
+
+  for (const proxy of proxyData) {
+    fastifyServer.register(fastifyProxy, proxy);
+  }
+
+  fastifyServer.listen(
+    { port: +`${process.env.PORT ?? 3000}`, host: '0.0.0.0' },
+    (err, address) => {
+      if (err) throw err;
+      fastifyServer.log.info(`Server listening on ${address}`);
+    },
+  );
+}
+bootstrap();

nest-ms-pg-auth0/apps/gateway/test/app.e2e-spec.ts

@@ -0,0 +1,24 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { INestApplication } from '@nestjs/common';
+import * as request from 'supertest';
+import { GatewayModule } from './../src/gateway.module';
+
+describe('GatewayController (e2e)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [GatewayModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it('/ (GET)', () => {
+    return request(app.getHttpServer())
+      .get('/')
+      .expect(200)
+      .expect('Hello World!');
+  });
+});

nest-ms-pg-auth0/apps/gateway/test/jest-e2e.json

@@ -0,0 +1,9 @@
+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}

nest-ms-pg-auth0/apps/gateway/tsconfig.app.json

@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "declaration": false,
+    "outDir": "../../dist/apps/gateway"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist", "test", "**/*spec.ts"]
+}

nest-ms-pg-auth0/apps/todos/src/main.ts

@@ -31,10 +31,14 @@ async function bootstrap() {
   app.enableCors();
 
   // add security HTTP headers
-  app.register(helmet);
+  app.register(
+    helmet as unknown as Parameters<NestFastifyApplication['register']>[0],
+  );
 
   // compresses response bodies
-  app.register(compression);
+  app.register(
+    compression as unknown as Parameters<NestFastifyApplication['register']>[0],
+  );
 
   // enable validation globally
   app.useGlobalPipes(new ValidationPipe({ transform: true, whitelist: true }));
@@ -63,9 +67,11 @@ async function bootstrap() {
     app.useGlobalFilters(new ErrorLoggingFilter(httpAdapterHost));
   }
 
+  const openPort = process.env.TODOS_API_PORT ?? port;
+
   // start server
-  await app.listen(port, configService.HOST, () => {
-    console.log(`App is running on http://${configService.HOST}:${port}`);
+  await app.listen(openPort, configService.HOST, () => {
+    console.log(`App is running on http://${configService.HOST}:${openPort}`);
   });
 }
 bootstrap();

nest-ms-pg-auth0/docker-compose.yml

@@ -6,22 +6,50 @@ services:
     extends:
       file: ./docker-services/rabbitmq-service.yml
       service: rabbitmq
+    networks:
+      - app-tier
 
   db:
     extends:
       file: ./docker-services/postgres-service.yml
       service: db
     ports:
       - '5433:${PGPORT}'
+    networks:
+      - app-tier
     depends_on:
       - rabbitmq
+
+  gateway:
+    extends:
+      file: ./docker-services/gateway-service.yml
+      service: gateway
+    ports:
+      - '3000:${PORT}'
+    depends_on:
+      - db
+      - rabbitmq
+
+  gateway-dev:
+    extends:
+      file: ./docker-services/gateway-service.yml
+      service: gateway-dev
+    ports:
+      - '3000:${PORT}'
+    networks:
+      - app-tier
+    depends_on:
+      - db
+      - rabbitmq
 
   auth:
     extends:
       file: ./docker-services/auth-service.yml
       service: auth
     ports:
-      - '3000:${PORT}'
+      - '${AUTH_API_PORT}:${AUTH_API_PORT}'
+    expose:
+      - '${AUTH_API_PORT}'
     depends_on:
       - db
       - rabbitmq
@@ -31,7 +59,11 @@ services:
       file: ./docker-services/auth-service.yml
       service: auth-dev
     ports:
-      - '3000:${PORT}'
+      - '${AUTH_API_PORT}:${AUTH_API_PORT}'
+    expose:
+      - '${AUTH_API_PORT}'
+    networks:
+      - app-tier
     depends_on:
       - db
       - rabbitmq
@@ -41,7 +73,9 @@ services:
       file: ./docker-services/todos-service.yml
       service: todos
     ports:
-      - '3001:${PORT}'
+      - '${TODOS_API_PORT}:${TODOS_API_PORT}'
+    expose:
+      - '${TODOS_API_PORT}'
     depends_on:
       - db
       - rabbitmq
@@ -51,14 +85,26 @@ services:
       file: ./docker-services/todos-service.yml
       service: todos-dev
     ports:
-      - '3001:${PORT}'
+      - '${TODOS_API_PORT}:${TODOS_API_PORT}'
+    expose:
+      - '${TODOS_API_PORT}'
+    networks:
+      - app-tier
     depends_on:
       - db
       - rabbitmq
 
 volumes:
-  todos:
-  todos-node_modules:
+  gateway:
+  gateway-node_modules:  
   auth:
   auth-node_modules:
+  todos:
+  todos-node_modules:
   db-data:
+
+networks:
+  app-tier:
+    driver: bridge
+    ipam:
+      driver: default

nest-ms-pg-auth0/docker-services/gateway-service.yml

@@ -0,0 +1,52 @@
+services:
+
+  gateway:
+    build:
+      context: ../
+      dockerfile: Dockerfile
+      target: prod
+      args:
+        - SERVICE_NAME=gateway
+    container_name: gateway
+    image: gateway
+    env_file:
+      - ../.env
+    environment:
+      # This overrides the .env file
+      - HOST=0.0.0.0
+    # Mount host directory to docker container to support watch mode
+    volumes:
+      - gateway
+    profiles:
+      - prod
+
+
+
+  gateway-dev:
+    build:
+      context: ../
+      dockerfile: Dockerfile
+      target: dev
+      args:
+        - DOCKER_BUILDKIT=1
+        - SERVICE_NAME=gateway
+    container_name: gateway-dev
+    image: gateway-dev
+    env_file:
+      - ../.env
+    environment:
+      # This overrides the .env file
+      - HOST=0.0.0.0
+    # Mount host directory to docker container to support watch mode
+    volumes:
+      - ../apps/gateway:/usr/src/app/apps/gateway
+      - ../libs:/usr/src/app/libs
+      # This ensures that the NestJS container manages the node_modules folder
+      # rather than synchronizes it with the host machine
+      - gateway-node_modules:/usr/src/app/node_modules
+    profiles:
+      - dev
+    command: >
+      sh -c "cd /usr/src/app
+      && npm run db:migrate:latest
+      && npm run start:dev -- gateway"

nest-ms-pg-auth0/nest-cli.json

@@ -43,6 +43,15 @@
       "compilerOptions": {
         "tsConfigPath": "libs/common/tsconfig.lib.json"
       }
+    },
+    "gateway": {
+      "type": "application",
+      "root": "apps/gateway",
+      "entryFile": "main",
+      "sourceRoot": "apps/gateway/src",
+      "compilerOptions": {
+        "tsConfigPath": "apps/gateway/tsconfig.app.json"
+      }
     }
   }
 }