chore(@nestjs) publish v7.6.10 release

fix(deps): update dependency ws to v7.4.3

LICENSE

@@ -1,6 +1,6 @@
 (The MIT License)
 
-Copyright (c) 2017-2020 Kamil Mysliwiec <https://kamilmysliwiec.com>
+Copyright (c) 2017-2021 Kamil Mysliwiec <https://kamilmysliwiec.com>
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

Readme.md

@@ -56,16 +56,21 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 
 #### Principal Sponsors
 <table style="text-align:center;"><tr><td>
-<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td><td>
-<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="180" valign="middle" /></a></td>
+<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td>
+<td>
+<a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="200" valign="middle" /></a></td>
 </tr></table>
 
+#### Gold Sponsors
+
+<table style="text-align:center;"><tr><td>
+<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="170" valign="middle" /></a></td></tr></table>
+
 #### Silver Sponsors
 
 <table style="text-align:center;"><tr><td>
 <a href="https://neoteric.eu/" target="_blank"><img src="https://nestjs.com/img/neoteric-cut.png" width="120" valign="middle" /></a> </td><td>
   <a href="http://gojob.com" target="_blank"><img src="http://nestjs.com/img/gojob-logo.png" valign="middle" width="100" /></a> </td><td>
-    <a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="170" valign="middle" /></a> </td><td>
 <a href="http://www.leogistics.com" target="_blank"><img src="https://nestjs.com/img/leogistics-logo.jpeg" width="150" valign="middle" /></td><td>
 <a href="http://www.meetdandy.com" target="_blank"><img src="https://nestjs.com/img/dandy-wide-logo.png" width="150" valign="middle" /></td></tr></table>
 
@@ -90,6 +95,11 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
   <td align="center" valign="middle">
   <a href="https://genuinebee.com/" target="_blank"><img src="https://nestjs.com/img/genuinebee.svg" width="97" valign="middle" /></a> </td>
 <td align="center" valign="middle"><a href="https://sanyodigital.com/" target="_blank"><img src="https://nestjs.com/img/sanyo-digital.png" width="130" valign="middle" /></a></td></tr><tr><td align="center" valign="middle"><a href="https://vpn-review.com/vpn-for-torrenting" target="_blank"><img src="https://nestjs.com/img/vpn-review-logo.png" width="85" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://lambda-it.ch/" target="_blank"><img src="https://nestjs.com/img/lambda-it-logo.svg" width="115" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://pickwriters.com/top-10-translation-services" target="_blank"><img src="https://nestjs.com/img/pickwriters-logo.png" width="40" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://thewordpoint.com/services/localization" target="_blank"><img src="https://nestjs.com/img/thewordpoint-logo.png" width="40" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://streamat.se/" target="_blank"><img src="https://nestjs.com/img/streamat-logo.png" width="120" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://filmen.nu/" target="_blank"><img src="https://nestjs.com/img/filmen-logo.png" width="120" valign="middle" /></a></td></tr><tr>
+<td align="center" valign="middle"><a href="https://meercode.io/" target="_blank"><img src="https://nestjs.com/img/meercode-logo.png" width="60" valign="middle" /></a></td>
+  <td align="center" valign="middle"><a href="https://www.najlepszeplatformyforex.pl/blog/broker-xtb/" target="_blank"><img src="https://nestjs.com/img/npf-logo.jpg" width="200" valign="middle" /></a></td>
+    <td align="center" valign="middle"><a href="https://thestandarddaily.com/" target="_blank"><img src="https://nestjs.com/img/the-standard-daily-logo.png" width="180" valign="middle" /></a></td>
   </tr></table>
 
 ## Backers

integration/cors/e2e/express.spec.ts

@@ -0,0 +1,177 @@
+import { NestFastifyApplication } from '@nestjs/platform-fastify';
+import { Test } from '@nestjs/testing';
+import * as request from 'supertest';
+import { AppModule } from '../src/app.module';
+
+describe('Express Cors', () => {
+  let app: NestFastifyApplication;
+  const configs = [
+    {
+      origin: 'example.com',
+      methods: 'GET',
+      credentials: true,
+      exposedHeaders: ['foo', 'bar'],
+      allowedHeaders: ['baz', 'woo'],
+      maxAge: 123,
+    },
+    {
+      origin: 'sample.com',
+      methods: 'GET',
+      credentials: true,
+      exposedHeaders: ['zoo', 'bar'],
+      allowedHeaders: ['baz', 'foo'],
+      maxAge: 321,
+    },
+  ];
+  describe('Dynamic config', () => {
+    describe('enableCors', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        app = module.createNestApplication<NestFastifyApplication>();
+
+        let requestId = 0;
+        const configDelegation = function (req, cb) {
+          const config = configs[requestId];
+          requestId++;
+          cb(null, config);
+        };
+        app.enableCors(configDelegation);
+
+        await app.init();
+      });
+
+      it(`Should add cors headers based on the first config`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+
+      it(`Should add cors headers based on the second config`, async () => {
+        return request(app.getHttpServer())
+          .options('/')
+          .expect('access-control-allow-origin', 'sample.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'zoo,bar')
+          .expect('access-control-allow-methods', 'GET')
+          .expect('access-control-allow-headers', 'baz,foo')
+          .expect('access-control-max-age', '321')
+          .expect('content-length', '0');
+      });
+
+      after(async () => {
+        await app.close();
+      });
+    });
+
+    describe('Application Options', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        let requestId = 0;
+        const configDelegation = function (req, cb) {
+          const config = configs[requestId];
+          requestId++;
+          cb(null, config);
+        };
+
+        app = module.createNestApplication<NestFastifyApplication>(null, {
+          cors: configDelegation,
+        });
+
+        await app.init();
+      });
+
+      it(`Should add cors headers based on the first config`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+
+      it(`Should add cors headers based on the second config`, async () => {
+        return request(app.getHttpServer())
+          .options('/')
+          .expect('access-control-allow-origin', 'sample.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'zoo,bar')
+          .expect('access-control-allow-methods', 'GET')
+          .expect('access-control-allow-headers', 'baz,foo')
+          .expect('access-control-max-age', '321')
+          .expect('content-length', '0');
+      });
+
+      after(async () => {
+        await app.close();
+      });
+    });
+  });
+  describe('Static config', () => {
+    describe('enableCors', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        app = module.createNestApplication<NestFastifyApplication>();
+        app.enableCors(configs[0]);
+
+        await app.init();
+      });
+
+      it(`CORS headers`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+    });
+
+    after(async () => {
+      await app.close();
+    });
+
+    describe('Application Options', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        app = module.createNestApplication<NestFastifyApplication>(null, {
+          cors: configs[0],
+        });
+        await app.init();
+      });
+
+      it(`CORS headers`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+
+      after(async () => {
+        await app.close();
+      });
+    });
+  });
+});

integration/cors/e2e/fastify.spec.ts

@@ -0,0 +1,177 @@
+import { NestFastifyApplication } from '@nestjs/platform-fastify';
+import { Test } from '@nestjs/testing';
+import * as request from 'supertest';
+import { AppModule } from '../src/app.module';
+
+describe('Fastify Cors', () => {
+  let app: NestFastifyApplication;
+  const configs = [
+    {
+      origin: 'example.com',
+      methods: 'GET',
+      credentials: true,
+      exposedHeaders: ['foo', 'bar'],
+      allowedHeaders: ['baz', 'woo'],
+      maxAge: 123,
+    },
+    {
+      origin: 'sample.com',
+      methods: 'GET',
+      credentials: true,
+      exposedHeaders: ['zoo', 'bar'],
+      allowedHeaders: ['baz', 'foo'],
+      maxAge: 321,
+    },
+  ];
+  describe('Dynamic config', () => {
+    describe('enableCors', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        app = module.createNestApplication<NestFastifyApplication>();
+
+        let requestId = 0;
+        const configDelegation = function (req, cb) {
+          const config = configs[requestId];
+          requestId++;
+          cb(null, config);
+        };
+        app.enableCors(configDelegation);
+
+        await app.init();
+      });
+
+      it(`Should add cors headers based on the first config`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+
+      it(`Should add cors headers based on the second config`, async () => {
+        return request(app.getHttpServer())
+          .options('/')
+          .expect('access-control-allow-origin', 'sample.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'zoo,bar')
+          .expect('access-control-allow-methods', 'GET')
+          .expect('access-control-allow-headers', 'baz,foo')
+          .expect('access-control-max-age', '321')
+          .expect('content-length', '0');
+      });
+
+      after(async () => {
+        await app.close();
+      });
+    });
+
+    describe('Application Options', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        let requestId = 0;
+        const configDelegation = function (req, cb) {
+          const config = configs[requestId];
+          requestId++;
+          cb(null, config);
+        };
+
+        app = module.createNestApplication<NestFastifyApplication>(null, {
+          cors: configDelegation,
+        });
+
+        await app.init();
+      });
+
+      it(`Should add cors headers based on the first config`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+
+      it(`Should add cors headers based on the second config`, async () => {
+        return request(app.getHttpServer())
+          .options('/')
+          .expect('access-control-allow-origin', 'sample.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'zoo,bar')
+          .expect('access-control-allow-methods', 'GET')
+          .expect('access-control-allow-headers', 'baz,foo')
+          .expect('access-control-max-age', '321')
+          .expect('content-length', '0');
+      });
+
+      after(async () => {
+        await app.close();
+      });
+    });
+  });
+
+  describe('Static config', () => {
+    describe('enableCors', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        app = module.createNestApplication<NestFastifyApplication>();
+        app.enableCors(configs[0]);
+
+        await app.init();
+      });
+
+      it(`CORS headers`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+    });
+
+    after(async () => {
+      await app.close();
+    });
+    describe('Application Options', () => {
+      before(async () => {
+        const module = await Test.createTestingModule({
+          imports: [AppModule],
+        }).compile();
+
+        app = module.createNestApplication<NestFastifyApplication>(null, {
+          cors: configs[0],
+        });
+        await app.init();
+      });
+
+      it(`CORS headers`, async () => {
+        return request(app.getHttpServer())
+          .get('/')
+          .expect('access-control-allow-origin', 'example.com')
+          .expect('vary', 'Origin')
+          .expect('access-control-allow-credentials', 'true')
+          .expect('access-control-expose-headers', 'foo,bar')
+          .expect('content-length', '0');
+      });
+    });
+
+    after(async () => {
+      await app.close();
+    });
+  });
+});

integration/cors/src/app.controller.ts

@@ -0,0 +1,9 @@
+import { Controller, Get } from '@nestjs/common';
+
+@Controller()
+export class AppController {
+  @Get()
+  getGlobals() {
+    return '';
+  }
+}

integration/cors/src/app.module.ts

@@ -0,0 +1,7 @@
+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+
+@Module({
+  controllers: [AppController],
+})
+export class AppModule {}

integration/cors/tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "declaration": false,
+    "noImplicitAny": false,
+    "removeComments": true,
+    "noLib": false,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "target": "es6",
+    "sourceMap": true,
+    "allowJs": true,
+    "outDir": "./dist"
+  },
+  "include": [
+    "src/**/*",
+    "e2e/**/*"
+  ],
+  "exclude": [
+    "node_modules",
+  ]
+}

integration/docker-compose.yml

@@ -23,7 +23,7 @@ services:
       - "9001:9001"
     restart: always
   mysql:
-    image: mysql:5.7.32
+    image: mysql:5.7.33
     environment:
       MYSQL_ROOT_PASSWORD: root
       MYSQL_DATABASE: test
@@ -48,7 +48,7 @@ services:
   zookeeper:
     container_name: test-zookeeper
     hostname: zookeeper
-    image: confluentinc/cp-zookeeper:5.5.2
+    image: confluentinc/cp-zookeeper:5.5.3
     ports:
       - "2181:2181"
     environment:
@@ -57,7 +57,7 @@ services:
   kafka:
     container_name: test-kafka
     hostname: kafka
-    image: confluentinc/cp-kafka:5.5.2
+    image: confluentinc/cp-kafka:5.5.3
     depends_on:
       - zookeeper
     ports:
@@ -70,3 +70,4 @@ services:
       KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
       KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
       KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
+      KAFKA_DELETE_TOPIC_ENABLE: 'true'

integration/hello-world/e2e/fastify-adapter.spec.ts

@@ -63,6 +63,22 @@ describe('Hello world (fastify adapter)', () => {
       });
   });
 
+  it(`/GET { host: [":tenant.example1.com", ":tenant.example2.com"] } not matched`, () => {
+    return app
+      .inject({
+        method: 'GET',
+        url: '/host-array',
+      })
+      .then(({ payload }) => {
+        expect(JSON.parse(payload)).to.be.eql({
+          error: 'Internal Server Error',
+          message:
+            'HTTP adapter does not support filtering on hosts: [":tenant.example1.com", ":tenant.example2.com"]',
+          statusCode: 500,
+        });
+      });
+  });
+
   it(`/GET inject with LightMyRequest chaining API`, () => {
     return app
       .inject()

integration/hello-world/e2e/hello-world.spec.ts

@@ -28,6 +28,16 @@ describe('Hello world (default adapter)', () => {
       path: '/host',
       greeting: 'Host Greeting! tenant=acme',
     },
+    {
+      host: 'acme.example1.com',
+      path: '/host-array',
+      greeting: 'Host Greeting! tenant=acme',
+    },
+    {
+      host: 'acme.example2.com',
+      path: '/host-array',
+      greeting: 'Host Greeting! tenant=acme',
+    },
   ].forEach(({ host, path, greeting }) => {
     describe(`host=${host}`, () => {
       describe('/GET', () => {

integration/hello-world/src/app.module.ts

@@ -1,8 +1,9 @@
 import { Module } from '@nestjs/common';
 import { HelloModule } from './hello/hello.module';
+import { HostArrayModule } from './host-array/host-array.module';
 import { HostModule } from './host/host.module';
 
 @Module({
-  imports: [HelloModule, HostModule],
+  imports: [HelloModule, HostModule, HostArrayModule],
 })
 export class ApplicationModule {}

integration/hello-world/src/host-array/dto/test.dto.ts

@@ -0,0 +1,10 @@
+import { IsString, IsNotEmpty, IsNumber } from 'class-validator';
+
+export class TestDto {
+  @IsString()
+  @IsNotEmpty()
+  string: string;
+
+  @IsNumber()
+  number: number;
+}

integration/hello-world/src/host-array/host-array.controller.ts

@@ -0,0 +1,37 @@
+import { Controller, Get, Header, HostParam, Param } from '@nestjs/common';
+import { Observable, of } from 'rxjs';
+import { HostArrayService } from './host-array.service';
+import { UserByIdPipe } from './users/user-by-id.pipe';
+
+@Controller({
+  path: 'host-array',
+  host: [':tenant.example1.com', ':tenant.example2.com'],
+})
+export class HostArrayController {
+  constructor(private readonly hostService: HostArrayService) {}
+
+  @Get()
+  @Header('Authorization', 'Bearer')
+  greeting(@HostParam('tenant') tenant: string): string {
+    return `${this.hostService.greeting()} tenant=${tenant}`;
+  }
+
+  @Get('async')
+  async asyncGreeting(@HostParam('tenant') tenant: string): Promise<string> {
+    return `${await this.hostService.greeting()} tenant=${tenant}`;
+  }
+
+  @Get('stream')
+  streamGreeting(@HostParam('tenant') tenant: string): Observable<string> {
+    return of(`${this.hostService.greeting()} tenant=${tenant}`);
+  }
+
+  @Get('local-pipe/:id')
+  localPipe(
+    @Param('id', UserByIdPipe)
+    user: any,
+    @HostParam('tenant') tenant: string,
+  ): any {
+    return { ...user, tenant };
+  }
+}

integration/hello-world/src/host-array/host-array.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { HostArrayController } from './host-array.controller';
+import { HostArrayService } from './host-array.service';
+import { UsersService } from './users/users.service';
+
+@Module({
+  controllers: [HostArrayController],
+  providers: [HostArrayService, UsersService],
+})
+export class HostArrayModule {}

integration/hello-world/src/host-array/host-array.service.ts

@@ -0,0 +1,8 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class HostArrayService {
+  greeting(): string {
+    return 'Host Greeting!';
+  }
+}

integration/hello-world/src/host-array/users/user-by-id.pipe.ts

@@ -0,0 +1,11 @@
+import { PipeTransform, Injectable, ArgumentMetadata } from '@nestjs/common';
+import { UsersService } from './users.service';
+
+@Injectable()
+export class UserByIdPipe implements PipeTransform<string> {
+  constructor(private readonly usersService: UsersService) {}
+
+  transform(value: string, metadata: ArgumentMetadata) {
+    return this.usersService.findById(value);
+  }
+}

integration/hello-world/src/host-array/users/users.service.ts

@@ -0,0 +1,8 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class UsersService {
+  findById(id: string) {
+    return { id, host: true };
+  }
+}

integration/hooks/src/enable-shutdown-hooks-main.ts

@@ -26,7 +26,7 @@ class TestInjectable
 class AppModule {}
 
 async function bootstrap() {
-  const app = await NestFactory.create(AppModule, { logger: true });
+  const app = await NestFactory.create(AppModule, { logger: false });
 
   if (SIGNAL_TO_LISTEN && SIGNAL_TO_LISTEN !== 'NONE') {
     app.enableShutdownHooks([SIGNAL_TO_LISTEN]);

integration/microservices/e2e/concurrent-kafka.spec.ts

@@ -0,0 +1,291 @@
+import { INestApplication, Logger } from '@nestjs/common';
+import { Transport } from '@nestjs/microservices';
+import { Test } from '@nestjs/testing';
+import { Admin, ITopicMetadata, Kafka } from 'kafkajs';
+import * as request from 'supertest';
+import * as util from 'util';
+import { KafkaConcurrentController } from '../src/kafka-concurrent/kafka-concurrent.controller';
+import { KafkaConcurrentMessagesController } from '../src/kafka-concurrent/kafka-concurrent.messages.controller';
+
+describe('Kafka concurrent', function () {
+  const numbersOfServers = 3;
+
+  const requestTopic = 'math.sum.sync.number.wait';
+  const responseTopic = 'math.sum.sync.number.wait.reply';
+
+  let admin: Admin;
+  const servers: any[] = [];
+  const apps: INestApplication[] = [];
+
+  const logger = new Logger('concurrent-kafka.spec.ts');
+
+  // set timeout to be longer (especially for the after hook)
+  this.timeout(30000);
+
+  const startServer = async () => {
+    const module = await Test.createTestingModule({
+      controllers: [
+        KafkaConcurrentController,
+        KafkaConcurrentMessagesController,
+      ],
+    }).compile();
+
+    // use our own logger for a little
+    // Logger.overrideLogger(new Logger());
+
+    const app = module.createNestApplication();
+
+    const server = app.getHttpAdapter().getInstance();
+
+    app.connectMicroservice({
+      transport: Transport.KAFKA,
+      options: {
+        client: {
+          brokers: ['localhost:9092'],
+        },
+        run: {
+          partitionsConsumedConcurrently: numbersOfServers,
+        },
+      },
+    });
+
+    // enable these for clean shutdown
+    app.enableShutdownHooks();
+
+    // push to the collection
+    servers.push(server);
+    apps.push(app);
+
+    // await the start
+    await app.startAllMicroservicesAsync();
+    await app.init();
+  };
+
+  it(`Create kafka topics/partitions`, async () => {
+    const kafka = new Kafka({
+      clientId: 'concurrent-test-admin',
+      brokers: ['localhost:9092'],
+    });
+
+    admin = kafka.admin();
+    await admin.connect();
+
+    let topicMetadata: {
+      topics: ITopicMetadata[];
+    };
+
+    try {
+      topicMetadata = await admin.fetchTopicMetadata({
+        topics: [requestTopic, responseTopic],
+      });
+    } catch (e) {
+      // create with number of servers
+      try {
+        await admin.createTopics({
+          topics: [
+            {
+              topic: requestTopic,
+              numPartitions: numbersOfServers,
+              replicationFactor: 1,
+            },
+            {
+              topic: responseTopic,
+              numPartitions: numbersOfServers,
+              replicationFactor: 1,
+            },
+          ],
+        });
+      } catch (e) {
+        logger.error(util.format('Create topics error: %o', e));
+      }
+    }
+
+    if (topicMetadata && topicMetadata.topics.length > 0) {
+      // we have topics, how many partitions do they have?
+      for (const topic of topicMetadata.topics) {
+        if (topic.partitions.length < numbersOfServers) {
+          try {
+            await admin.createPartitions({
+              topicPartitions: [
+                {
+                  topic: topic.name,
+                  count: numbersOfServers,
+                },
+              ],
+            });
+          } catch (e) {
+            logger.error(util.format('Create partitions error: %o', e));
+          }
+        }
+      }
+    }
+
+    // create with number of servers
+    try {
+      await admin.createTopics({
+        topics: [
+          {
+            topic: requestTopic,
+            numPartitions: numbersOfServers,
+            replicationFactor: 1,
+          },
+          {
+            topic: responseTopic,
+            numPartitions: numbersOfServers,
+            replicationFactor: 1,
+          },
+        ],
+      });
+    } catch (e) {
+      logger.error(util.format('Create topics error: %o', e));
+    }
+
+    // disconnect
+    await admin.disconnect();
+  });
+
+  it(`Start Kafka apps`, async () => {
+    // start all at once
+    await Promise.all(
+      Array(numbersOfServers)
+        .fill(1)
+        .map(async (v, i) => {
+          // return startServer();
+
+          // wait in intervals so the consumers start in order
+          return new Promise<void>(resolve => {
+            setTimeout(async () => {
+              await startServer();
+
+              return resolve();
+            }, 1000 * i);
+          });
+        }),
+    );
+  }).timeout(30000);
+
+  it(`Concurrent messages without forcing a rebalance.`, async () => {
+    // wait a second before notifying the servers to respond
+    setTimeout(async () => {
+      // notify the other servers that it is time to respond
+      await Promise.all(
+        servers.map(async server => {
+          // send to all servers since indexes don't necessarily align with server consumers
+          return request(server).post('/go').send();
+        }),
+      );
+    }, 1000);
+
+    await Promise.all(
+      servers.map(async (server, index) => {
+        // send requests
+        const payload = {
+          key: index,
+          numbers: [1, index],
+        };
+        const result = (1 + index).toString();
+
+        return request(server)
+          .post('/mathSumSyncNumberWait')
+          .send(payload)
+          .expect(200)
+          .expect(200, result);
+      }),
+    );
+  });
+
+  it(`Close kafka client consumer while waiting for message pattern response.`, async () => {
+    await Promise.all(
+      servers.map(async (server, index) => {
+        // shut off and delete the leader
+        if (index === 0) {
+          return new Promise<void>(resolve => {
+            // wait a second before closing so the producers can send the message to the server consumers
+            setTimeout(async () => {
+              // get the controller
+              const controller = apps[index].get(KafkaConcurrentController);
+
+              // close the controller clients
+              await controller.client.close();
+
+              // notify the other servers that we have stopped
+              await Promise.all(
+                servers.map(async server => {
+                  // send to all servers since indexes don't necessarily align with server consumers
+                  return request(server).post('/go').send();
+                }),
+              );
+
+              return resolve();
+            }, 1000);
+          });
+        }
+
+        // send requests
+        const payload = {
+          key: index,
+          numbers: [1, index],
+        };
+        const result = (1 + index).toString();
+
+        return request(server)
+          .post('/mathSumSyncNumberWait')
+          .send(payload)
+          .expect(200)
+          .expect(200, result);
+      }),
+    );
+  });
+
+  it(`Start kafka client consumer while waiting for message pattern response.`, async () => {
+    await Promise.all(
+      servers.map(async (server, index) => {
+        // shut off and delete the leader
+        if (index === 0) {
+          return new Promise<void>(resolve => {
+            // wait a second before closing so the producers can send the message to the server consumers
+            setTimeout(async () => {
+              // get the controller
+              const controller = apps[index].get(KafkaConcurrentController);
+
+              // connect the controller client
+              await controller.client.connect();
+
+              // notify the servers that we have started
+              await Promise.all(
+                servers.map(async server => {
+                  // send to all servers since indexes don't necessarily align with server consumers
+                  return request(server).post('/go').send();
+                }),
+              );
+
+              return resolve();
+            }, 1000);
+          });
+        }
+
+        // send requests
+        const payload = {
+          key: index,
+          numbers: [1, index],
+        };
+        const result = (1 + index).toString();
+
+        return request(server)
+          .post('/mathSumSyncNumberWait')
+          .send(payload)
+          .expect(200)
+          .expect(200, result);
+      }),
+    );
+  });
+
+  after(`Stopping Kafka app`, async () => {
+    // close all concurrently
+    return Promise.all(
+      apps.map(async app => {
+        return app.close();
+      }),
+    );
+  });
+});

integration/microservices/e2e/sum-kafka.spec.ts

@@ -9,10 +9,13 @@ import { UserEntity } from '../src/kafka/entities/user.entity';
 import { KafkaController } from '../src/kafka/kafka.controller';
 import { KafkaMessagesController } from '../src/kafka/kafka.messages.controller';
 
-describe('Kafka transport', () => {
+describe('Kafka transport', function () {
   let server;
   let app: INestApplication;
 
+  // set timeout to be longer (especially for the after hook)
+  this.timeout(30000);
+
   it(`Start Kafka app`, async () => {
     const module = await Test.createTestingModule({
       controllers: [KafkaController, KafkaMessagesController],
@@ -29,6 +32,7 @@ describe('Kafka transport', () => {
         },
       },
     });
+    app.enableShutdownHooks();
     await app.startAllMicroservicesAsync();
     await app.init();
   }).timeout(30000);

integration/microservices/e2e/sum-rpc.spec.ts

@@ -105,6 +105,22 @@ describe('RPC transport', () => {
       });
   });
 
+  it('/POST (custom client)', () => {
+    return request(server)
+      .post('/error?client=custom')
+      .send({})
+      .expect(200)
+      .expect('true');
+  });
+
+  it('/POST (standard client)', () => {
+    return request(server)
+      .post('/error?client=standard')
+      .send({})
+      .expect(200)
+      .expect('false');
+  });
+
   afterEach(async () => {
     await app.close();
   });

integration/microservices/src/app.controller.ts

@@ -12,15 +12,17 @@ import {
   EventPattern,
   MessagePattern,
   Transport,
+  RpcException,
 } from '@nestjs/microservices';
-import { from, Observable, of } from 'rxjs';
-import { scan } from 'rxjs/operators';
+import { from, Observable, of, throwError } from 'rxjs';
+import { catchError, scan } from 'rxjs/operators';
 
 @Controller()
 export class AppController {
   constructor(
     @Inject('USE_CLASS_CLIENT') private useClassClient: ClientProxy,
     @Inject('USE_FACTORY_CLIENT') private useFactoryClient: ClientProxy,
+    @Inject('CUSTOM_PROXY_CLIENT') private customClient: ClientProxy,
   ) {}
   static IS_NOTIFIED = false;
 
@@ -75,6 +77,17 @@ export class AppController {
       .reduce(async (a, b) => (await a) && b);
   }
 
+  @Post('error')
+  @HttpCode(200)
+  serializeError(@Query('client') query: 'custom' | 'standard' = 'standard', @Body() body: Record<string, any>): Observable<boolean> {
+    const client = query === 'custom' ? this.customClient : this.client;
+    return client.send({ cmd: 'err' }, {}).pipe(
+      catchError((err) => {
+        return of(err instanceof RpcException);
+      })
+    )
+  }
+
   @MessagePattern({ cmd: 'sum' })
   sum(data: number[]): number {
     return (data || []).reduce((a, b) => a + b);
@@ -95,6 +108,11 @@ export class AppController {
     return from(data);
   }
 
+  @MessagePattern({ cmd: 'err' })
+  throwAnError() {
+    return throwError(new Error('err'));
+  }
+
   @Post('notify')
   async sendNotification(): Promise<any> {
     return this.client.emit<number>('notification', true);

integration/microservices/src/app.module.ts

@@ -5,8 +5,16 @@ import {
   Transport,
   ClientsModuleOptionsFactory,
   ClientOptions,
+  ClientTCP,
+  RpcException,
 } from '@nestjs/microservices';
 
+class ErrorHandlingProxy extends ClientTCP {
+  serializeError(err) {
+    return new RpcException(err);
+  }
+}
+
 @Injectable()
 class ConfigService {
   private readonly config = {
@@ -51,7 +59,14 @@ class ClientOptionService implements ClientsModuleOptionsFactory {
         name: 'USE_CLASS_CLIENT',
         useClass: ClientOptionService,
         inject: [ConfigService],
-      },
+      }, {
+        imports: [ConfigModule],
+        inject: [ConfigService],
+        name: 'CUSTOM_PROXY_CLIENT',
+        useFactory: (config: ConfigService) => ({
+          customClass: ErrorHandlingProxy
+        })
+      }
     ]),
   ],
   controllers: [AppController],

integration/microservices/src/kafka-concurrent/dto/sum.dto.ts

@@ -0,0 +1,4 @@
+export class SumDto {
+  key: string;
+  numbers: number[];
+}

integration/microservices/src/kafka-concurrent/kafka-concurrent.controller.ts

@@ -0,0 +1,70 @@
+import {
+  Body,
+  Controller,
+  HttpCode,
+  OnModuleDestroy,
+  OnModuleInit,
+  Post,
+} from '@nestjs/common';
+import { Logger } from '@nestjs/common/services/logger.service';
+import { Client, ClientKafka, Transport } from '@nestjs/microservices';
+import { PartitionerArgs } from 'kafkajs';
+import { Observable } from 'rxjs';
+import { SumDto } from './dto/sum.dto';
+
+/**
+ * The following function explicity sends messages to the key representing the partition.
+ */
+const explicitPartitioner = () => {
+  return ({ message }: PartitionerArgs) => {
+    return parseFloat(message.headers.toPartition.toString());
+  };
+};
+
+@Controller()
+export class KafkaConcurrentController
+  implements OnModuleInit, OnModuleDestroy {
+  protected readonly logger = new Logger(KafkaConcurrentController.name);
+
+  @Client({
+    transport: Transport.KAFKA,
+    options: {
+      client: {
+        brokers: ['localhost:9092'],
+      },
+      run: {
+        partitionsConsumedConcurrently: 3,
+      },
+      producer: {
+        createPartitioner: explicitPartitioner,
+      },
+    },
+  })
+  public readonly client: ClientKafka;
+
+  async onModuleInit() {
+    const requestPatterns = ['math.sum.sync.number.wait'];
+
+    requestPatterns.forEach(pattern => {
+      this.client.subscribeToResponseOf(pattern);
+    });
+
+    await this.client.connect();
+  }
+
+  async onModuleDestroy() {
+    await this.client.close();
+  }
+
+  @Post('mathSumSyncNumberWait')
+  @HttpCode(200)
+  public mathSumSyncNumberWait(@Body() data: SumDto): Observable<string> {
+    return this.client.send('math.sum.sync.number.wait', {
+      headers: {
+        toPartition: data.key.toString(),
+      },
+      key: data.key.toString(),
+      value: data.numbers,
+    });
+  }
+}

integration/microservices/src/kafka-concurrent/kafka-concurrent.messages.controller.ts

@@ -0,0 +1,37 @@
+import { Controller, HttpCode, Post } from '@nestjs/common';
+import { MessagePattern } from '@nestjs/microservices';
+import { BehaviorSubject, Observable } from 'rxjs';
+import { first, map, skipWhile } from 'rxjs/operators';
+
+@Controller()
+export class KafkaConcurrentMessagesController {
+  public waiting = new BehaviorSubject<boolean>(false);
+
+  @Post('go')
+  @HttpCode(200)
+  async go() {
+    // no longer waiting
+    this.waiting.next(false);
+
+    return;
+  }
+
+  @MessagePattern('math.sum.sync.number.wait')
+  public mathSumSyncNumberWait(data: any): Observable<number> {
+    // start waiting
+    this.waiting.next(true);
+
+    // find sum
+    const sum = data.value[0] + data.value[1];
+
+    return this.waiting.asObservable().pipe(
+      skipWhile(isWaiting => {
+        return isWaiting;
+      }),
+      map(() => {
+        return sum;
+      }),
+      first(),
+    );
+  }
+}

integration/microservices/src/kafka/kafka.controller.ts

@@ -1,4 +1,11 @@
-import { Body, Controller, HttpCode, OnModuleInit, Post } from '@nestjs/common';
+import {
+  Body,
+  Controller,
+  HttpCode,
+  OnModuleInit,
+  Post,
+  OnModuleDestroy,
+} from '@nestjs/common';
 import { Logger } from '@nestjs/common/services/logger.service';
 import { Client, ClientKafka, Transport } from '@nestjs/microservices';
 import { Observable } from 'rxjs';
@@ -6,7 +13,7 @@ import { BusinessDto } from './dtos/business.dto';
 import { UserDto } from './dtos/user.dto';
 
 @Controller()
-export class KafkaController implements OnModuleInit {
+export class KafkaController implements OnModuleInit, OnModuleDestroy {
   protected readonly logger = new Logger(KafkaController.name);
   static IS_NOTIFIED = false;
   static MATH_SUM = 0;
@@ -21,7 +28,7 @@ export class KafkaController implements OnModuleInit {
   })
   private readonly client: ClientKafka;
 
-  onModuleInit() {
+  async onModuleInit() {
     const requestPatterns = [
       'math.sum.sync.kafka.message',
       'math.sum.sync.without.key',
@@ -36,6 +43,12 @@ export class KafkaController implements OnModuleInit {
     requestPatterns.forEach(pattern => {
       this.client.subscribeToResponseOf(pattern);
     });
+
+    await this.client.connect();
+  }
+
+  async onModuleDestroy() {
+    await this.client.close();
   }
 
   // sync send kafka message

integration/websockets/e2e/error-gateway.spec.ts

@@ -20,7 +20,7 @@ describe('ErrorGateway', () => {
     ws.emit('push', {
       test: 'test',
     });
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('exception', data => {
         expect(data).to.be.eql({
           status: 'error',

integration/websockets/e2e/gateway-ack.spec.ts

@@ -20,7 +20,7 @@ describe('WebSocketGateway (ack)', () => {
     await app.listenAsync(3000);
 
     ws = io.connect('http://localhost:8080');
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.emit('push', { test: 'test' }, data => {
         expect(data).to.be.eql('pong');
         resolve();
@@ -33,7 +33,7 @@ describe('WebSocketGateway (ack)', () => {
     await app.listenAsync(3000);
 
     ws = io.connect('http://localhost:8080');
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.emit('push', data => {
         expect(data).to.be.eql('pong');
         resolve();

integration/websockets/e2e/gateway.spec.ts

@@ -25,7 +25,7 @@ describe('WebSocketGateway', () => {
     ws.emit('push', {
       test: 'test',
     });
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('pop', data => {
         expect(data.test).to.be.eql('test');
         resolve();
@@ -41,7 +41,7 @@ describe('WebSocketGateway', () => {
     ws.emit('push', {
       test: 'test',
     });
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('pop', data => {
         expect(data.test).to.be.eql('test');
         resolve();
@@ -58,7 +58,7 @@ describe('WebSocketGateway', () => {
     ws.emit('push', {
       test: 'test',
     });
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('pop', data => {
         expect(data.test).to.be.eql('test');
         resolve();

integration/websockets/e2e/ws-gateway.spec.ts

@@ -34,7 +34,7 @@ describe('WebSocketGateway (WsAdapter)', () => {
         },
       }),
     );
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('message', data => {
         expect(JSON.parse(data).data.test).to.be.eql('test');
         resolve();
@@ -57,7 +57,7 @@ describe('WebSocketGateway (WsAdapter)', () => {
         },
       }),
     );
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('message', data => {
         expect(JSON.parse(data).data.test).to.be.eql('test');
         resolve();
@@ -77,7 +77,7 @@ describe('WebSocketGateway (WsAdapter)', () => {
     ws = new WebSocket('ws://localhost:8080');
     ws2 = new WebSocket('ws://localhost:8090');
 
-    await new Promise(resolve =>
+    await new Promise<void>(resolve =>
       ws.on('open', () => {
         ws.on('message', data => {
           expect(JSON.parse(data).data.test).to.be.eql('test');
@@ -94,7 +94,7 @@ describe('WebSocketGateway (WsAdapter)', () => {
       }),
     );
 
-    await new Promise(resolve => {
+    await new Promise<void>(resolve => {
       ws2.on('message', data => {
         expect(JSON.parse(data).data.test).to.be.eql('test');
         resolve();

lerna.json

@@ -3,5 +3,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "7.5.5"
+  "version": "7.6.10"
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@nestjs/core",
-  "version": "7.5.3",
+  "version": "7.6.8",
   "description": "Modern, fast, powerful node.js web framework",
   "homepage": "https://nestjs.com",
   "repository": {
@@ -29,9 +29,10 @@
     "test:docker:up": "docker-compose -f integration/docker-compose.yml up -d",
     "test:docker:down": "docker-compose -f integration/docker-compose.yml down",
     "lint": "concurrently 'npm run lint:packages' 'npm run lint:integration' 'npm run lint:spec'",
-    "lint:integration": "eslint 'integration/*/{,!(node_modules)/**/}/*.ts' -c '.eslintrc.spec.js' --fix",
-    "lint:packages": "eslint 'packages/**/**.ts' --fix --ignore-pattern 'packages/**/*.spec.ts'",
-    "lint:spec": "eslint 'packages/**/**.spec.ts' -c '.eslintrc.spec.js' --fix",
+    "lint:fix": "concurrently 'npm run lint:packages -- --fix' 'npm run lint:integration -- --fix' 'npm run lint:spec -- --fix'",
+    "lint:integration": "eslint 'integration/*/{,!(node_modules)/**/}/*.ts' -c '.eslintrc.spec.js'",
+    "lint:packages": "eslint 'packages/**/**.ts' --ignore-pattern 'packages/**/*.spec.ts'",
+    "lint:spec": "eslint 'packages/**/**.spec.ts' -c '.eslintrc.spec.js'",
     "prerelease": "gulp copy-misc && gulp build --dist node_modules/@nestjs",
     "publish": "npm run prerelease && npm run build:prod && ./node_modules/.bin/lerna publish --force-publish --access public --exact -m \"chore(@nestjs) publish %s release\"",
     "publish:beta": "npm run prerelease && npm run build:prod && ./node_modules/.bin/lerna publish --npm-tag=beta --access public -m \"chore(@nestjs) publish %s release\"",
@@ -52,52 +53,52 @@
   },
   "dependencies": {
     "@nuxtjs/opencollective": "0.3.2",
-    "axios": "0.21.0",
-    "class-transformer": "0.3.1",
-    "class-validator": "0.12.2",
+    "axios": "0.21.1",
+    "class-transformer": "0.3.2",
+    "class-validator": "0.13.1",
     "cli-color": "2.0.0",
     "cors": "2.8.5",
     "express": "4.17.1",
-    "fast-json-stringify": "2.2.10",
+    "fast-json-stringify": "2.4.1",
     "fast-safe-stringify": "2.0.7",
     "iterare": "1.2.1",
-    "object-hash": "2.0.3",
+    "object-hash": "2.1.1",
     "path-to-regexp": "3.2.0",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.6.3",
-    "socket.io": "2.3.0",
-    "uuid": "8.3.1",
-    "tslib": "2.0.3"
+    "socket.io": "2.4.1",
+    "tslib": "2.1.0",
+    "uuid": "8.3.2"
   },
   "devDependencies": {
     "@codechecks/client": "0.1.10",
     "@commitlint/cli": "11.0.0",
     "@commitlint/config-angular": "11.0.0",
-    "@grpc/proto-loader": "0.5.5",
-    "@nestjs/graphql": "7.9.1",
-    "@nestjs/mongoose": "7.1.2",
+    "@grpc/proto-loader": "0.5.6",
+    "@nestjs/graphql": "7.9.8",
+    "@nestjs/mongoose": "7.2.2",
     "@nestjs/typeorm": "7.1.5",
-    "@types/amqplib": "0.5.16",
+    "@types/amqplib": "0.5.17",
     "@types/bytes": "3.1.0",
-    "@types/cache-manager": "2.10.3",
+    "@types/cache-manager": "3.4.0",
     "@types/chai": "4.2.14",
     "@types/chai-as-promised": "7.1.3",
-    "@types/cors": "2.8.8",
-    "@types/express": "4.17.9",
-    "@types/gulp": "4.0.7",
-    "@types/mocha": "8.0.4",
-    "@types/mongoose": "5.10.2",
-    "@types/node": "14.14.10",
+    "@types/cors": "2.8.9",
+    "@types/express": "4.17.11",
+    "@types/gulp": "4.0.8",
+    "@types/mocha": "8.2.0",
+    "@types/mongoose": "5.10.3",
+    "@types/node": "14.14.22",
     "@types/redis": "2.8.28",
     "@types/reflect-metadata": "0.1.0",
-    "@types/sinon": "9.0.9",
-    "@types/socket.io": "2.1.12",
+    "@types/sinon": "9.0.10",
+    "@types/socket.io": "2.1.13",
     "@types/ws": "7.4.0",
-    "@typescript-eslint/eslint-plugin": "4.9.1",
-    "@typescript-eslint/parser": "4.9.0",
+    "@typescript-eslint/eslint-plugin": "4.14.2",
+    "@typescript-eslint/parser": "4.14.2",
     "amqp-connection-manager": "3.2.1",
     "amqplib": "0.6.0",
-    "apollo-server-express": "2.19.0",
+    "apollo-server-express": "2.19.2",
     "artillery": "1.6.1",
     "awesome-typescript-loader": "5.2.1",
     "body-parser": "1.19.0",
@@ -105,25 +106,25 @@
     "cache-manager": "3.4.0",
     "chai": "4.2.0",
     "chai-as-promised": "7.1.1",
-    "clang-format": "1.4.0",
+    "clang-format": "1.5.0",
     "commitlint-circle": "1.0.0",
     "concurrently": "5.3.0",
     "conventional-changelog": "3.1.24",
-    "core-js": "3.8.1",
+    "core-js": "3.8.3",
     "coveralls": "3.1.0",
     "delete-empty": "3.0.0",
-    "engine.io-client": "4.0.4",
-    "eslint": "7.15.0",
-    "eslint-config-prettier": "7.0.0",
+    "engine.io-client": "4.1.1",
+    "eslint": "7.19.0",
+    "eslint-config-prettier": "7.2.0",
     "eslint-plugin-import": "2.22.1",
     "eventsource": "1.0.7",
     "fancy-log": "1.3.3",
-    "fastify": "3.9.1",
-    "fastify-cors": "5.0.0",
+    "fastify": "3.11.0",
+    "fastify-cors": "5.2.0",
     "fastify-formbody": "5.0.0",
     "fastify-multipart": "3.3.1",
-    "fastify-static": "3.3.0",
-    "graphql": "15.4.0",
+    "fastify-static": "3.4.0",
+    "graphql": "15.5.0",
     "graphql-tools": "7.0.2",
     "grpc": "1.24.4",
     "gulp": "4.0.2",
@@ -132,39 +133,39 @@
     "gulp-sourcemaps": "3.0.0",
     "gulp-typescript": "5.0.1",
     "gulp-watch": "5.0.1",
-    "husky": "4.3.5",
-    "imports-loader": "1.2.0",
+    "husky": "4.3.8",
+    "imports-loader": "2.0.0",
     "json-loader": "0.5.7",
-    "kafkajs": "1.12.0",
+    "kafkajs": "1.15.0",
     "lerna": "2.11.0",
-    "light-my-request": "4.3.0",
+    "light-my-request": "4.4.1",
     "lint-staged": "10.5.3",
     "markdown-table": "2.0.0",
     "merge-graphql-schemas": "1.7.8",
     "middie": "5.2.0",
     "mocha": "8.2.1",
-    "mongoose": "5.11.5",
+    "mongoose": "5.11.14",
     "mqtt": "4.2.6",
     "multer": "1.4.2",
     "mysql": "2.18.1",
     "nats": "1.4.12",
-    "nodemon": "2.0.6",
+    "nodemon": "2.0.7",
     "nyc": "15.1.0",
-    "point-of-view": "4.7.0",
+    "point-of-view": "4.11.0",
     "prettier": "2.2.1",
     "redis": "3.0.2",
     "rxjs-compat": "6.6.3",
-    "sinon": "9.2.1",
+    "sinon": "9.2.4",
     "sinon-chai": "3.5.0",
-    "socket.io-client": "2.3.1",
+    "socket.io-client": "2.4.0",
     "subscriptions-transport-ws": "0.9.18",
-    "supertest": "6.0.1",
+    "supertest": "6.1.3",
     "ts-morph": "9.1.0",
     "ts-node": "9.1.1",
-    "typeorm": "0.2.29",
-    "typescript": "4.0.3",
+    "typeorm": "0.2.30",
+    "typescript": "4.1.3",
     "wrk": "1.2.1",
-    "ws": "7.4.1"
+    "ws": "7.4.3"
   },
   "engines": {
     "node": ">= 10.13.0"

packages/common/Readme.md

@@ -56,16 +56,21 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 
 #### Principal Sponsors
 <table style="text-align:center;"><tr><td>
-<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td><td>
-<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="180" valign="middle" /></a></td>
+<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td>
+<td>
+<a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="200" valign="middle" /></a></td>
 </tr></table>
 
+#### Gold Sponsors
+
+<table style="text-align:center;"><tr><td>
+<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="170" valign="middle" /></a></td></tr></table>
+
 #### Silver Sponsors
 
 <table style="text-align:center;"><tr><td>
 <a href="https://neoteric.eu/" target="_blank"><img src="https://nestjs.com/img/neoteric-cut.png" width="120" valign="middle" /></a> </td><td>
   <a href="http://gojob.com" target="_blank"><img src="http://nestjs.com/img/gojob-logo.png" valign="middle" width="100" /></a> </td><td>
-    <a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="170" valign="middle" /></a> </td><td>
 <a href="http://www.leogistics.com" target="_blank"><img src="https://nestjs.com/img/leogistics-logo.jpeg" width="150" valign="middle" /></td><td>
 <a href="http://www.meetdandy.com" target="_blank"><img src="https://nestjs.com/img/dandy-wide-logo.png" width="150" valign="middle" /></td></tr></table>
 
@@ -90,6 +95,11 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
   <td align="center" valign="middle">
   <a href="https://genuinebee.com/" target="_blank"><img src="https://nestjs.com/img/genuinebee.svg" width="97" valign="middle" /></a> </td>
 <td align="center" valign="middle"><a href="https://sanyodigital.com/" target="_blank"><img src="https://nestjs.com/img/sanyo-digital.png" width="130" valign="middle" /></a></td></tr><tr><td align="center" valign="middle"><a href="https://vpn-review.com/vpn-for-torrenting" target="_blank"><img src="https://nestjs.com/img/vpn-review-logo.png" width="85" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://lambda-it.ch/" target="_blank"><img src="https://nestjs.com/img/lambda-it-logo.svg" width="115" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://pickwriters.com/top-10-translation-services" target="_blank"><img src="https://nestjs.com/img/pickwriters-logo.png" width="40" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://thewordpoint.com/services/localization" target="_blank"><img src="https://nestjs.com/img/thewordpoint-logo.png" width="40" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://streamat.se/" target="_blank"><img src="https://nestjs.com/img/streamat-logo.png" width="120" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://filmen.nu/" target="_blank"><img src="https://nestjs.com/img/filmen-logo.png" width="120" valign="middle" /></a></td></tr><tr>
+<td align="center" valign="middle"><a href="https://meercode.io/" target="_blank"><img src="https://nestjs.com/img/meercode-logo.png" width="60" valign="middle" /></a></td>
+  <td align="center" valign="middle"><a href="https://www.najlepszeplatformyforex.pl/blog/broker-xtb/" target="_blank"><img src="https://nestjs.com/img/npf-logo.jpg" width="200" valign="middle" /></a></td>
+    <td align="center" valign="middle"><a href="https://thestandarddaily.com/" target="_blank"><img src="https://nestjs.com/img/the-standard-daily-logo.png" width="180" valign="middle" /></a></td>
   </tr></table>
 
 ## Backers

packages/common/decorators/core/controller.decorator.ts

@@ -27,7 +27,7 @@ export interface ControllerOptions extends ScopeOptions {
    *
    * @see [Routing](https://docs.nestjs.com/controllers#routing)
    */
-  host?: string;
+  host?: string | string[];
 }
 
 /**

packages/common/exceptions/http.exception.ts

@@ -78,4 +78,3 @@ export class HttpException extends Error {
       : { statusCode, message: objectOrError, error: description };
   }
 }
-

packages/common/interfaces/external/class-transform-options.interface.ts

@@ -50,4 +50,9 @@ export interface ClassTransformOptions {
    * and exposing all class properties (with undefined, if nothing else is given)
    */
   excludeExtraneousValues?: boolean;
+  /**
+   * If set to true then class transformer will take default values for unprovided fields.
+   * This is useful when you convert a plain object to a class and have an optional field with a default value.
+   */
+  exposeDefaultValues?: boolean;
 }

packages/common/interfaces/external/cors-options.interface.ts

@@ -52,3 +52,10 @@ export interface CorsOptions {
    */
   optionsSuccessStatus?: number;
 }
+
+export interface CorsOptionsCallback {
+  (error: Error, options: CorsOptions): void;
+}
+export interface CorsOptionsDelegate<T> {
+  (req: T, cb: CorsOptionsCallback): void;
+}

packages/common/interfaces/external/validation-error.interface.ts

@@ -2,29 +2,41 @@
  * Validation error description.
  * @see https://github.com/typestack/class-validator
  *
+ * class-validator@0.13.0
+ *
  * @publicApi
  */
 export interface ValidationError {
   /**
    * Object that was validated.
+   *
+   * OPTIONAL - configurable via the ValidatorOptions.validationError.target option
    */
-  target: Record<string, any>;
+  target?: Record<string, any>;
   /**
    * Object's property that hasn't passed validation.
    */
   property: string;
   /**
-   * Value that hasn't passed validation.
+   * Value that haven't pass a validation.
+   *
+   * OPTIONAL - configurable via the ValidatorOptions.validationError.value option
    */
-  value: any;
+  value?: any;
   /**
    * Constraints that failed validation with error messages.
    */
-  constraints: {
+  constraints?: {
     [type: string]: string;
   };
   /**
    * Contains all nested validation errors of the property.
    */
-  children: ValidationError[];
+  children?: ValidationError[];
+  /**
+   * A transient set of data passed through to the validation result for response mapping
+   */
+  contexts?: {
+    [type: string]: any;
+  };
 }

packages/common/interfaces/external/validator-options.interface.ts

@@ -2,11 +2,15 @@
  * Options passed to validator during validation.
  * @see https://github.com/typestack/class-validator
  *
- * class-validator@0.10.1
+ * class-validator@0.13.0
  *
  * @publicApi
  */
 export interface ValidatorOptions {
+  /**
+   * If set to true then class-validator will print extra warning messages to the console when something is not right.
+   */
+  enableDebugMessages?: boolean;
   /**
    * If set to true then validator will skip validation of all properties that are undefined in the validating object.
    */
@@ -33,6 +37,15 @@ export interface ValidatorOptions {
    * Groups to be used during validation of the object.
    */
   groups?: string[];
+  /**
+   * Set default for `always` option of decorators. Default can be overridden in decorator options.
+   */
+  always?: boolean;
+  /**
+   * If [groups]{@link ValidatorOptions#groups} is not given or is empty,
+   * ignore decorators with at least one group.
+   */
+  strictGroups?: boolean;
   /**
    * If set to true, the validation will not use default messages.
    * Error message always will be undefined if its not explicitly set.
@@ -55,4 +68,8 @@ export interface ValidatorOptions {
    * Settings true will cause fail validation of unknown objects.
    */
   forbidUnknownValues?: boolean;
+  /**
+   * When set to true, validation of the given property will stop after encountering the first error. Defaults to false.
+   */
+  stopAtFirstError?: boolean;
 }

packages/common/interfaces/http/http-server.interface.ts

@@ -1,5 +1,8 @@
 import { RequestMethod } from '../../enums';
-import { CorsOptions } from '../../interfaces/external/cors-options.interface';
+import {
+  CorsOptions,
+  CorsOptionsDelegate,
+} from '../../interfaces/external/cors-options.interface';
 import { NestApplicationOptions } from '../../interfaces/nest-application-options.interface';
 
 export type ErrorHandler<TRequest = any, TResponse = any> = (
@@ -62,7 +65,7 @@ export interface HttpServer<TRequest = any, TResponse = any> {
   getRequestUrl?(request: TResponse): string;
   getInstance(): any;
   registerParserMiddleware(): any;
-  enableCors(options: CorsOptions): any;
+  enableCors(options: CorsOptions | CorsOptionsDelegate<TRequest>): any;
   getHttpServer(): any;
   initHttpServer(options: NestApplicationOptions): void;
   close(): any;

packages/common/interfaces/nest-application-context.interface.ts

@@ -1,6 +1,7 @@
 import { ShutdownSignal } from '../enums/shutdown-signal.enum';
 import { LoggerService, LogLevel } from '../services/logger.service';
 import { Abstract } from './abstract.interface';
+import { DynamicModule } from './modules';
 import { Type } from './type.interface';
 
 /**
@@ -13,7 +14,7 @@ export interface INestApplicationContext {
    * Allows navigating through the modules tree, for example, to pull out a specific instance from the selected module.
    * @returns {INestApplicationContext}
    */
-  select<T>(module: Type<T>): INestApplicationContext;
+  select<T>(module: Type<T> | DynamicModule): INestApplicationContext;
 
   /**
    * Retrieves an instance of either injectable or controller, otherwise, throws exception.

packages/common/interfaces/nest-application-options.interface.ts

@@ -1,4 +1,7 @@
-import { CorsOptions } from './external/cors-options.interface';
+import {
+  CorsOptions,
+  CorsOptionsDelegate,
+} from './external/cors-options.interface';
 import { HttpsOptions } from './external/https-options.interface';
 import { NestApplicationContextOptions } from './nest-application-context-options.interface';
 
@@ -9,7 +12,7 @@ export interface NestApplicationOptions extends NestApplicationContextOptions {
   /**
    * CORS options from [CORS package](https://github.com/expressjs/cors#configuration-options)
    */
-  cors?: boolean | CorsOptions;
+  cors?: boolean | CorsOptions | CorsOptionsDelegate<any>;
   /**
    * Whether to use underlying platform body parser.
    */

packages/common/interfaces/nest-application.interface.ts

@@ -1,4 +1,7 @@
-import { CorsOptions } from './external/cors-options.interface';
+import {
+  CorsOptions,
+  CorsOptionsDelegate,
+} from './external/cors-options.interface';
 import { CanActivate } from './features/can-activate.interface';
 import { NestInterceptor } from './features/nest-interceptor.interface';
 import { HttpServer } from './http/http-server.interface';
@@ -30,7 +33,7 @@ export interface INestApplication extends INestApplicationContext {
    *
    * @returns {void}
    */
-  enableCors(options?: CorsOptions): void;
+  enableCors(options?: CorsOptions | CorsOptionsDelegate<any>): void;
 
   /**
    * Starts the application.

packages/common/interfaces/type.interface.ts

@@ -1,3 +1,3 @@
-export interface Type<T> extends Function {
+export interface Type<T = any> extends Function {
   new (...args: any[]): T;
 }

packages/common/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@nestjs/common",
-  "version": "7.5.5",
+  "version": "7.6.10",
   "description": "Nest - modern, fast, powerful node.js web framework (@common)",
   "author": "Kamil Mysliwiec",
   "homepage": "https://nestjs.com",
@@ -17,13 +17,27 @@
   },
   "license": "MIT",
   "dependencies": {
-    "axios": "0.21.0",
+    "axios": "0.21.1",
     "iterare": "1.2.1",
-    "tslib": "2.0.3",
-    "uuid": "8.3.1"
+    "tslib": "2.1.0",
+    "uuid": "8.3.2"
   },
   "peerDependencies": {
+    "cache-manager": "*",
+    "class-transformer": "*",
+    "class-validator": "*",
     "reflect-metadata": "^0.1.12",
     "rxjs": "^6.0.0"
+  },
+  "peerDependenciesMeta": {
+    "cache-manager": {
+      "optional": true
+    },
+    "class-validator": {
+      "optional": true
+    },
+    "class-transformer": {
+      "optional": true
+    }
   }
 }

packages/common/pipes/parse-array.pipe.ts

@@ -86,7 +86,39 @@ export class ParseArrayPipe implements PipeTransform {
         } catch {}
         return this.validationPipe.transform(item, validationMetadata);
       };
-      value = await Promise.all(value.map(toClassInstance));
+      if (this.options.stopAtFirstError === false) {
+        // strict compare to "false" to make sure
+        // that this option is disabled by default
+        let errors = [];
+
+        const targetArray = value as Array<unknown>;
+        for (let i = 0; i < targetArray.length; i++) {
+          try {
+            targetArray[i] = await toClassInstance(targetArray[i]);
+          } catch (err) {
+            let message: string[] | unknown;
+            if (err.getResponse) {
+              const response = err.getResponse();
+              if (Array.isArray(response.message)) {
+                message = response.message.map(
+                  (item: string) => `[${i}] ${item}`,
+                );
+              } else {
+                message = `[${i}] ${response.message}`;
+              }
+            } else {
+              message = err;
+            }
+            errors = errors.concat(message);
+          }
+        }
+        if (errors.length > 0) {
+          throw this.exceptionFactory(errors as any);
+        }
+        return targetArray;
+      } else {
+        value = await Promise.all(value.map(toClassInstance));
+      }
     }
     return value;
   }

packages/common/pipes/validation.pipe.ts

@@ -199,27 +199,35 @@ export class ValidationPipe implements PipeTransform<any> {
 
   protected mapChildrenToValidationErrors(
     error: ValidationError,
+    parentPath?: string,
   ): ValidationError[] {
     if (!(error.children && error.children.length)) {
       return [error];
     }
     const validationErrors = [];
+    parentPath = parentPath
+      ? `${parentPath}.${error.property}`
+      : error.property;
     for (const item of error.children) {
       if (item.children && item.children.length) {
-        validationErrors.push(...this.mapChildrenToValidationErrors(item));
+        validationErrors.push(
+          ...this.mapChildrenToValidationErrors(item, parentPath),
+        );
       }
-      validationErrors.push(this.prependConstraintsWithParentProp(error, item));
+      validationErrors.push(
+        this.prependConstraintsWithParentProp(parentPath, item),
+      );
     }
     return validationErrors;
   }
 
   protected prependConstraintsWithParentProp(
-    parentError: ValidationError,
+    parentPath: string,
     error: ValidationError,
   ): ValidationError {
     const constraints = {};
     for (const key in error.constraints) {
-      constraints[key] = `${parentError.property}.${error.constraints[key]}`;
+      constraints[key] = `${parentPath}.${error.constraints[key]}`;
     }
     return {
       ...error,

packages/common/serializer/class-serializer.interceptor.ts

@@ -71,7 +71,7 @@ export class ClassSerializerInterceptor implements NestInterceptor {
       : plainOrClass;
   }
 
-  private getContextOptions(
+  protected getContextOptions(
     context: ExecutionContext,
   ): ClassTransformOptions | undefined {
     return (

packages/common/services/logger.service.ts

@@ -1,7 +1,7 @@
 import { Injectable } from '../decorators/core/injectable.decorator';
 import { Optional } from '../decorators/core/optional.decorator';
 import { clc, yellow } from '../utils/cli-colors.util';
-import { isObject } from '../utils/shared.utils';
+import { isObject, isPlainObject } from '../utils/shared.utils';
 
 declare const process: any;
 
@@ -83,7 +83,7 @@ export class Logger implements LoggerService {
     context = '',
     isTimeDiffEnabled = true,
   ) {
-    this.printMessage(message, clc.red, context, isTimeDiffEnabled);
+    this.printMessage(message, clc.red, context, isTimeDiffEnabled, 'stderr');
     this.printStackTrace(trace);
   }
 
@@ -144,18 +144,22 @@ export class Logger implements LoggerService {
     color: (message: string) => string,
     context = '',
     isTimeDiffEnabled?: boolean,
+    writeStreamType?: 'stdout' | 'stderr',
   ) {
-    const output = isObject(message)
+    const output = isPlainObject(message)
       ? `${color('Object:')}\n${JSON.stringify(message, null, 2)}\n`
       : color(message);
 
     const pidMessage = color(`[Nest] ${process.pid}   - `);
     const contextMessage = context ? yellow(`[${context}] `) : '';
     const timestampDiff = this.updateAndGetTimestampDiff(isTimeDiffEnabled);
-    const instance = this.instance as typeof Logger;
-    process.stdout.write(
-      `${pidMessage}${instance.getTimestamp()}   ${contextMessage}${output}${timestampDiff}\n`,
-    );
+    const instance = (this.instance as typeof Logger) ?? Logger;
+    const timestamp = instance.getTimestamp
+      ? instance.getTimestamp()
+      : Logger.getTimestamp?.();
+    const computedMessage = `${pidMessage}${timestamp}   ${contextMessage}${output}${timestampDiff}\n`;
+
+    process[writeStreamType ?? 'stdout'].write(computedMessage);
   }
 
   private static updateAndGetTimestampDiff(
@@ -173,6 +177,6 @@ export class Logger implements LoggerService {
     if (!trace) {
       return;
     }
-    process.stdout.write(`${trace}\n`);
+    process.stderr.write(`${trace}\n`);
   }
 }

packages/common/test/decorators/controller.decorator.spec.ts

@@ -4,6 +4,7 @@ import { Controller } from '../../decorators/core/controller.decorator';
 describe('@Controller', () => {
   const reflectedPath = 'test';
   const reflectedHost = 'api.example.com';
+  const reflectedHostArray = ['api1.example.com', 'api2.example.com'];
 
   @Controller(reflectedPath)
   class Test {}
@@ -14,6 +15,9 @@ describe('@Controller', () => {
   @Controller({ path: reflectedPath, host: reflectedHost })
   class PathAndHostDecorator {}
 
+  @Controller({ path: reflectedPath, host: reflectedHostArray })
+  class PathAndHostArrayDecorator {}
+
   @Controller({ host: reflectedHost })
   class HostOnlyDecorator {}
 
@@ -29,6 +33,8 @@ describe('@Controller', () => {
     expect(host).to.be.eql(reflectedHost);
     const host2 = Reflect.getMetadata('host', HostOnlyDecorator);
     expect(host2).to.be.eql(reflectedHost);
+    const host3 = Reflect.getMetadata('host', PathAndHostArrayDecorator);
+    expect(host3).to.be.eql(reflectedHostArray);
   });
 
   it('should set default path when no object passed as param', () => {

packages/common/test/pipes/parse-array.pipe.spec.ts

@@ -1,7 +1,19 @@
+import * as chai from 'chai';
 import { expect } from 'chai';
+import * as chaiAsPromised from 'chai-as-promised';
+import { Type } from 'class-transformer';
+import {
+  IsBoolean,
+  IsDate,
+  IsDefined,
+  IsNumber,
+  IsString,
+  ValidateNested,
+} from 'class-validator';
 import { BadRequestException } from '../../exceptions';
 import { ArgumentMetadata } from '../../interfaces/features/pipe-transform.interface';
 import { ParseArrayPipe } from '../../pipes/parse-array.pipe';
+chai.use(chaiAsPromised);
 
 describe('ParseArrayPipe', () => {
   let target: ParseArrayPipe;
@@ -102,6 +114,153 @@ describe('ParseArrayPipe', () => {
           expect(item).to.be.instanceOf(ArrItem);
         });
       });
+      describe('when "stopAtFirstError" is explicitly turned off', () => {
+        it('should validate each item and concat errors', async () => {
+          class ArrItemWithProp {
+            @IsNumber()
+            number: number;
+          }
+          const pipe = new ParseArrayPipe({
+            items: ArrItemWithProp,
+            stopAtFirstError: false,
+          });
+          try {
+            await pipe.transform(
+              [
+                { number: '1' },
+                { number: '1' },
+                { number: 1 },
+              ] as ArrItemWithProp[],
+              {} as ArgumentMetadata,
+            );
+          } catch (err) {
+            expect(err).to.be.instanceOf(BadRequestException);
+            expect(err.getResponse().message).to.deep.equal([
+              '[0] number must be a number conforming to the specified constraints',
+              '[1] number must be a number conforming to the specified constraints',
+            ]);
+          }
+        });
+
+        it('should validate each nested object and concat errors', async () => {
+          class RandomObject {
+            @IsDefined()
+            @IsBoolean()
+            isEnabled: boolean;
+
+            @IsString()
+            title: string;
+
+            @IsDate()
+            createdAt: Date;
+
+            constructor(partial: Partial<any>) {
+              Object.assign(this, partial);
+            }
+          }
+          class ArrItemObject {
+            @ValidateNested()
+            random: RandomObject;
+          }
+          const pipe = new ParseArrayPipe({
+            items: ArrItemObject,
+            stopAtFirstError: false,
+          });
+          try {
+            await pipe.transform(
+              [
+                {
+                  random: new RandomObject({
+                    isEnabled: true,
+                    title: true,
+                    createdAt: new Date(),
+                  }),
+                },
+                {
+                  random: new RandomObject({
+                    title: 'ok',
+                    createdAt: false,
+                  }),
+                },
+              ] as any[],
+              {} as ArgumentMetadata,
+            );
+          } catch (err) {
+            expect(err).to.be.instanceOf(BadRequestException);
+            expect(err.getResponse().message).to.deep.equal([
+              '[0] random.title must be a string',
+              '[1] random.isEnabled should not be null or undefined',
+              '[1] random.isEnabled must be a boolean value',
+              '[1] random.createdAt must be a Date instance',
+            ]);
+          }
+        });
+
+        it('should validate each nested array and concat errors', async () => {
+          class RandomObject {
+            @IsDefined()
+            @IsBoolean()
+            isEnabled: boolean;
+
+            @IsString()
+            title: string;
+
+            @IsDate()
+            createdAt: Date;
+
+            constructor(partial: Partial<any>) {
+              Object.assign(this, partial);
+            }
+          }
+          class ArrItemObject {
+            @Type(() => RandomObject)
+            @ValidateNested({ each: true })
+            random: RandomObject[];
+          }
+          const pipe = new ParseArrayPipe({
+            items: ArrItemObject,
+            stopAtFirstError: false,
+          });
+          try {
+            await pipe.transform(
+              [
+                {
+                  random: [
+                    new RandomObject({
+                      isEnabled: true,
+                      title: true,
+                      createdAt: new Date(),
+                    }),
+                    new RandomObject({
+                      isEnabled: true,
+                      title: true,
+                      createdAt: new Date(),
+                    }),
+                  ],
+                },
+                {
+                  random: [
+                    new RandomObject({
+                      title: 'ok',
+                      createdAt: false,
+                    }),
+                  ],
+                },
+              ] as any[],
+              {} as ArgumentMetadata,
+            );
+          } catch (err) {
+            expect(err).to.be.instanceOf(BadRequestException);
+            expect(err.getResponse().message).to.deep.equal([
+              '[0] random.0.title must be a string',
+              '[0] random.1.title must be a string',
+              '[1] random.0.isEnabled should not be null or undefined',
+              '[1] random.0.isEnabled must be a boolean value',
+              '[1] random.0.createdAt must be a Date instance',
+            ]);
+          }
+        });
+      });
     });
   });
 });

packages/common/test/pipes/validation.pipe.spec.ts

@@ -8,6 +8,7 @@ import {
   IsOptional,
   IsString,
   ValidateNested,
+  IsArray,
 } from 'class-validator';
 import { HttpStatus } from '../../enums';
 import { UnprocessableEntityException } from '../../exceptions';
@@ -156,6 +157,32 @@ describe('ValidationPipe', () => {
           ]);
         }
       });
+
+      class TestModelForNestedArrayValidation {
+        @IsString()
+        public prop: string;
+
+        @IsArray()
+        @ValidateNested()
+        @Type(() => TestModel2)
+        public test: TestModel2[];
+      }
+      it('should provide complete path for nested errors', async () => {
+        try {
+          const model = new TestModelForNestedArrayValidation();
+          model.test = [new TestModel2()];
+          await target.transform(model, {
+            type: 'body',
+            metatype: TestModelForNestedArrayValidation,
+          });
+        } catch (err) {
+          expect(err.getResponse().message).to.be.eql([
+            'prop must be a string',
+            'test.0.prop1 must be a string',
+            'test.0.prop2 must be a boolean value',
+          ]);
+        }
+      });
     });
     describe('when validation transforms', () => {
       it('should return a TestModel instance', async () => {

packages/common/utils/shared.utils.ts

@@ -27,6 +27,12 @@ export const isPlainObject = (fn: any): fn is object => {
 export const addLeadingSlash = (path?: string): string =>
   path ? (path.charAt(0) !== '/' ? '/' + path : path) : '';
 
+/**
+ * Deprecated. Use the "addLeadingSlash" function instead.
+ * @deprecated
+ */
+export const validatePath = addLeadingSlash;
+
 export const isFunction = (fn: any): boolean => typeof fn === 'function';
 export const isString = (fn: any): fn is string => typeof fn === 'string';
 export const isConstructor = (fn: any): boolean => fn === 'constructor';

packages/core/Readme.md

@@ -56,16 +56,21 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 
 #### Principal Sponsors
 <table style="text-align:center;"><tr><td>
-<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td><td>
-<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="180" valign="middle" /></a></td>
+<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td>
+<td>
+<a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="200" valign="middle" /></a></td>
 </tr></table>
 
+#### Gold Sponsors
+
+<table style="text-align:center;"><tr><td>
+<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="170" valign="middle" /></a></td></tr></table>
+
 #### Silver Sponsors
 
 <table style="text-align:center;"><tr><td>
 <a href="https://neoteric.eu/" target="_blank"><img src="https://nestjs.com/img/neoteric-cut.png" width="120" valign="middle" /></a> </td><td>
   <a href="http://gojob.com" target="_blank"><img src="http://nestjs.com/img/gojob-logo.png" valign="middle" width="100" /></a> </td><td>
-    <a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="170" valign="middle" /></a> </td><td>
 <a href="http://www.leogistics.com" target="_blank"><img src="https://nestjs.com/img/leogistics-logo.jpeg" width="150" valign="middle" /></td><td>
 <a href="http://www.meetdandy.com" target="_blank"><img src="https://nestjs.com/img/dandy-wide-logo.png" width="150" valign="middle" /></td></tr></table>
 
@@ -90,6 +95,11 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
   <td align="center" valign="middle">
   <a href="https://genuinebee.com/" target="_blank"><img src="https://nestjs.com/img/genuinebee.svg" width="97" valign="middle" /></a> </td>
 <td align="center" valign="middle"><a href="https://sanyodigital.com/" target="_blank"><img src="https://nestjs.com/img/sanyo-digital.png" width="130" valign="middle" /></a></td></tr><tr><td align="center" valign="middle"><a href="https://vpn-review.com/vpn-for-torrenting" target="_blank"><img src="https://nestjs.com/img/vpn-review-logo.png" width="85" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://lambda-it.ch/" target="_blank"><img src="https://nestjs.com/img/lambda-it-logo.svg" width="115" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://pickwriters.com/top-10-translation-services" target="_blank"><img src="https://nestjs.com/img/pickwriters-logo.png" width="40" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://thewordpoint.com/services/localization" target="_blank"><img src="https://nestjs.com/img/thewordpoint-logo.png" width="40" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://streamat.se/" target="_blank"><img src="https://nestjs.com/img/streamat-logo.png" width="120" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://filmen.nu/" target="_blank"><img src="https://nestjs.com/img/filmen-logo.png" width="120" valign="middle" /></a></td></tr><tr>
+<td align="center" valign="middle"><a href="https://meercode.io/" target="_blank"><img src="https://nestjs.com/img/meercode-logo.png" width="60" valign="middle" /></a></td>
+  <td align="center" valign="middle"><a href="https://www.najlepszeplatformyforex.pl/blog/broker-xtb/" target="_blank"><img src="https://nestjs.com/img/npf-logo.jpg" width="200" valign="middle" /></a></td>
+    <td align="center" valign="middle"><a href="https://thestandarddaily.com/" target="_blank"><img src="https://nestjs.com/img/the-standard-daily-logo.png" width="180" valign="middle" /></a></td>
   </tr></table>
 
 ## Backers

packages/core/adapters/http-adapter.ts

@@ -1,6 +1,9 @@
 import { HttpServer, RequestMethod } from '@nestjs/common';
 import { RequestHandler } from '@nestjs/common/interfaces';
-import { CorsOptions } from '@nestjs/common/interfaces/external/cors-options.interface';
+import {
+  CorsOptions,
+  CorsOptionsDelegate,
+} from '@nestjs/common/interfaces/external/cors-options.interface';
 import { NestApplicationOptions } from '@nestjs/common/interfaces/nest-application-options.interface';
 
 /**
@@ -14,6 +17,14 @@ export abstract class AbstractHttpAdapter<
   protected httpServer: TServer;
 
   constructor(protected readonly instance: any) {}
+  all(path: string, handler: RequestHandler<TRequest, TResponse>);
+  all(handler: RequestHandler<TRequest, TResponse>);
+  all(path: any, handler?: any) {
+    throw new Error('Method not implemented.');
+  }
+  setBaseViewsDir?(path: string | string[]): this {
+    throw new Error('Method not implemented.');
+  }
 
   // eslint-disable-next-line @typescript-eslint/no-empty-function
   public async init() {}
@@ -97,7 +108,10 @@ export abstract class AbstractHttpAdapter<
   abstract setNotFoundHandler(handler: Function, prefix?: string);
   abstract setHeader(response, name: string, value: string);
   abstract registerParserMiddleware(prefix?: string);
-  abstract enableCors(options: CorsOptions, prefix?: string);
+  abstract enableCors(
+    options: CorsOptions | CorsOptionsDelegate<TRequest>,
+    prefix?: string,
+  );
   abstract createMiddlewareFactory(
     requestMethod: RequestMethod,
   ):

packages/core/application-config.ts

@@ -14,12 +14,8 @@ export class ApplicationConfig {
   private globalInterceptors: NestInterceptor[] = [];
   private globalGuards: CanActivate[] = [];
   private readonly globalRequestPipes: InstanceWrapper<PipeTransform>[] = [];
-  private readonly globalRequestFilters: InstanceWrapper<
-    ExceptionFilter
-  >[] = [];
-  private readonly globalRequestInterceptors: InstanceWrapper<
-    NestInterceptor
-  >[] = [];
+  private readonly globalRequestFilters: InstanceWrapper<ExceptionFilter>[] = [];
+  private readonly globalRequestInterceptors: InstanceWrapper<NestInterceptor>[] = [];
   private readonly globalRequestGuards: InstanceWrapper<CanActivate>[] = [];
 
   constructor(private ioAdapter: WebSocketAdapter | null = null) {}

packages/core/helpers/external-context-creator.ts

@@ -38,9 +38,7 @@ export interface ExternalContextOptions {
 export class ExternalContextCreator {
   private readonly contextUtils = new ContextUtils();
   private readonly externalErrorProxy = new ExternalErrorProxy();
-  private readonly handlerMetadataStorage = new HandlerMetadataStorage<
-    ExternalHandlerMetadata
-  >();
+  private readonly handlerMetadataStorage = new HandlerMetadataStorage<ExternalHandlerMetadata>();
   private container: NestContainer;
 
   constructor(

packages/core/injector/compiler.ts

@@ -13,18 +13,17 @@ export class ModuleCompiler {
   public async compile(
     metatype: Type<any> | DynamicModule | Promise<DynamicModule>,
   ): Promise<ModuleFactory> {
-    const { type, dynamicMetadata } = await this.extractMetadata(metatype);
+    const { type, dynamicMetadata } = this.extractMetadata(await metatype);
     const token = this.moduleTokenFactory.create(type, dynamicMetadata);
     return { type, dynamicMetadata, token };
   }
 
-  public async extractMetadata(
-    metatype: Type<any> | DynamicModule | Promise<DynamicModule>,
-  ): Promise<{
+  public extractMetadata(
+    metatype: Type<any> | DynamicModule,
+  ): {
     type: Type<any>;
     dynamicMetadata?: Partial<DynamicModule> | undefined;
-  }> {
-    metatype = await metatype;
+  } {
     if (!this.isDynamicModule(metatype)) {
       return { type: metatype };
     }

packages/core/injector/injector.ts

@@ -69,82 +69,6 @@ export interface InjectorDependencyContext {
 }
 
 export class Injector {
-  public async loadMiddleware(
-    wrapper: InstanceWrapper,
-    collection: Map<string, InstanceWrapper>,
-    moduleRef: Module,
-    contextId = STATIC_CONTEXT,
-    inquirer?: InstanceWrapper,
-  ) {
-    const { metatype } = wrapper;
-    const targetWrapper = collection.get(metatype.name);
-    if (!isUndefined(targetWrapper.instance)) {
-      return;
-    }
-    const loadInstance = (instances: any[]) => {
-      targetWrapper.instance = targetWrapper.isDependencyTreeStatic()
-        ? new (metatype as Type<any>)(...instances)
-        : Object.create(metatype.prototype);
-    };
-    await this.resolveConstructorParams(
-      wrapper,
-      moduleRef,
-      null,
-      loadInstance,
-      contextId,
-      inquirer,
-    );
-  }
-
-  public async loadController(
-    wrapper: InstanceWrapper<Controller>,
-    moduleRef: Module,
-    contextId = STATIC_CONTEXT,
-  ) {
-    const controllers = moduleRef.controllers;
-    await this.loadInstance<Controller>(
-      wrapper,
-      controllers,
-      moduleRef,
-      contextId,
-      wrapper,
-    );
-    await this.loadEnhancersPerContext(wrapper, contextId, wrapper);
-  }
-
-  public async loadInjectable<T = any>(
-    wrapper: InstanceWrapper<T>,
-    moduleRef: Module,
-    contextId = STATIC_CONTEXT,
-    inquirer?: InstanceWrapper,
-  ) {
-    const injectables = moduleRef.injectables;
-    await this.loadInstance<T>(
-      wrapper,
-      injectables,
-      moduleRef,
-      contextId,
-      inquirer,
-    );
-  }
-
-  public async loadProvider(
-    wrapper: InstanceWrapper<Injectable>,
-    moduleRef: Module,
-    contextId = STATIC_CONTEXT,
-    inquirer?: InstanceWrapper,
-  ) {
-    const providers = moduleRef.providers;
-    await this.loadInstance<Injectable>(
-      wrapper,
-      providers,
-      moduleRef,
-      contextId,
-      inquirer,
-    );
-    await this.loadEnhancersPerContext(wrapper, contextId, wrapper);
-  }
-
   public loadPrototype<T>(
     { name }: InstanceWrapper<T>,
     collection: Map<string, InstanceWrapper<T>>,
@@ -164,15 +88,6 @@ export class Injector {
     }
   }
 
-  public applyDoneHook<T>(wrapper: InstancePerContext<T>): () => void {
-    let done: () => void;
-    wrapper.donePromise = new Promise<void>((resolve, reject) => {
-      done = resolve;
-    });
-    wrapper.isPending = true;
-    return done;
-  }
-
   public async loadInstance<T>(
     wrapper: InstanceWrapper<T>,
     collection: Map<string, InstanceWrapper>,
@@ -225,11 +140,91 @@ export class Injector {
     );
   }
 
+  public async loadMiddleware(
+    wrapper: InstanceWrapper,
+    collection: Map<string, InstanceWrapper>,
+    moduleRef: Module,
+    contextId = STATIC_CONTEXT,
+    inquirer?: InstanceWrapper,
+  ) {
+    const { metatype } = wrapper;
+    const targetWrapper = collection.get(metatype.name);
+    if (!isUndefined(targetWrapper.instance)) {
+      return;
+    }
+    targetWrapper.instance = Object.create(metatype.prototype);
+    await this.loadInstance(
+      wrapper,
+      collection,
+      moduleRef,
+      contextId,
+      inquirer || wrapper,
+    );
+  }
+
+  public async loadController(
+    wrapper: InstanceWrapper<Controller>,
+    moduleRef: Module,
+    contextId = STATIC_CONTEXT,
+  ) {
+    const controllers = moduleRef.controllers;
+    await this.loadInstance<Controller>(
+      wrapper,
+      controllers,
+      moduleRef,
+      contextId,
+      wrapper,
+    );
+    await this.loadEnhancersPerContext(wrapper, contextId, wrapper);
+  }
+
+  public async loadInjectable<T = any>(
+    wrapper: InstanceWrapper<T>,
+    moduleRef: Module,
+    contextId = STATIC_CONTEXT,
+    inquirer?: InstanceWrapper,
+  ) {
+    const injectables = moduleRef.injectables;
+    await this.loadInstance<T>(
+      wrapper,
+      injectables,
+      moduleRef,
+      contextId,
+      inquirer,
+    );
+  }
+
+  public async loadProvider(
+    wrapper: InstanceWrapper<Injectable>,
+    moduleRef: Module,
+    contextId = STATIC_CONTEXT,
+    inquirer?: InstanceWrapper,
+  ) {
+    const providers = moduleRef.providers;
+    await this.loadInstance<Injectable>(
+      wrapper,
+      providers,
+      moduleRef,
+      contextId,
+      inquirer,
+    );
+    await this.loadEnhancersPerContext(wrapper, contextId, wrapper);
+  }
+
+  public applyDoneHook<T>(wrapper: InstancePerContext<T>): () => void {
+    let done: () => void;
+    wrapper.donePromise = new Promise<void>((resolve, reject) => {
+      done = resolve;
+    });
+    wrapper.isPending = true;
+    return done;
+  }
+
   public async resolveConstructorParams<T>(
     wrapper: InstanceWrapper<T>,
     moduleRef: Module,
     inject: InjectorDependency[],
-    callback: (args: unknown[]) => void,
+    callback: (args: unknown[]) => void | Promise<void>,
     contextId = STATIC_CONTEXT,
     inquirer?: InstanceWrapper,
     parentInquirer?: InstanceWrapper,
@@ -274,7 +269,7 @@ export class Injector {
         if (!instanceHost.isResolved && !paramWrapper.forwardRef) {
           isResolved = false;
         }
-        return instanceHost && instanceHost.instance;
+        return instanceHost?.instance;
       } catch (err) {
         const isOptional = optionalDependenciesIds.includes(index);
         if (!isOptional) {
@@ -372,7 +367,7 @@ export class Injector {
 
   public async resolveComponentHost<T>(
     moduleRef: Module,
-    instanceWrapper: InstanceWrapper<T>,
+    instanceWrapper: InstanceWrapper<T | Promise<T>>,
     contextId = STATIC_CONTEXT,
     inquirer?: InstanceWrapper,
   ): Promise<InstanceWrapper> {

packages/core/injector/module-token-factory.ts

@@ -47,11 +47,15 @@ export class ModuleTokenFactory {
 
   private replacer(key: string, value: any) {
     if (typeof value === 'function') {
-      const isClass = /^class\s/.test(Function.prototype.toString.call(value));
+      const funcAsString = value.toString();
+      const isClass = /^class\s/.test(funcAsString);
       if (isClass) {
         return value.name;
       }
-      return hash(value.toString(), { ignoreUnknown: true });
+      return hash(funcAsString, { ignoreUnknown: true });
+    }
+    if (typeof value === 'symbol') {
+      return value.toString();
     }
     return value;
   }

packages/core/middleware/middleware-module.ts

@@ -168,6 +168,9 @@ export class MiddlewareModule {
       if (isUndefined(instanceWrapper)) {
         throw new RuntimeException();
       }
+      if (instanceWrapper.isTransient) {
+        return;
+      }
       await this.bindHandler(
         instanceWrapper,
         applicationRef,

packages/core/nest-application-context.ts

@@ -5,7 +5,7 @@ import {
   LogLevel,
   ShutdownSignal,
 } from '@nestjs/common';
-import { Abstract, Scope } from '@nestjs/common/interfaces';
+import { Abstract, DynamicModule, Scope } from '@nestjs/common/interfaces';
 import { Type } from '@nestjs/common/interfaces/type.interface';
 import { isEmpty } from '@nestjs/common/utils/shared.utils';
 import { iterate } from 'iterare';
@@ -22,6 +22,7 @@ import {
   callModuleInitHook,
 } from './hooks';
 import { ContextId } from './injector';
+import { ModuleCompiler } from './injector/compiler';
 import { NestContainer } from './injector/container';
 import { Injector } from './injector/injector';
 import { InstanceLinksHost } from './injector/instance-links-host';
@@ -33,8 +34,10 @@ import { Module } from './injector/module';
 export class NestApplicationContext implements INestApplicationContext {
   protected isInitialized = false;
   protected readonly injector = new Injector();
-  private shutdownCleanupRef?: (...args: unknown[]) => unknown;
+
   private readonly activeShutdownSignals = new Array<string>();
+  private readonly moduleCompiler = new ModuleCompiler();
+  private shutdownCleanupRef?: (...args: unknown[]) => unknown;
   private _instanceLinksHost: InstanceLinksHost;
 
   private get instanceLinksHost() {
@@ -55,14 +58,20 @@ export class NestApplicationContext implements INestApplicationContext {
     this.contextModule = modules.next().value;
   }
 
-  public select<T>(moduleType: Type<T>): INestApplicationContext {
-    const modules = this.container.getModules();
-    const moduleMetatype = this.contextModule.metatype;
-    const scope = this.scope.concat(moduleMetatype);
-    const moduleTokenFactory = this.container.getModuleTokenFactory();
+  public select<T>(
+    moduleType: Type<T> | DynamicModule,
+  ): INestApplicationContext {
+    const modulesContainer = this.container.getModules();
+    const contextModuleCtor = this.contextModule.metatype;
+    const scope = this.scope.concat(contextModuleCtor);
 
-    const token = moduleTokenFactory.create(moduleType);
-    const selectedModule = modules.get(token);
+    const moduleTokenFactory = this.container.getModuleTokenFactory();
+    const { type, dynamicMetadata } = this.moduleCompiler.extractMetadata(
+      moduleType,
+    );
+    const token = moduleTokenFactory.create(type, dynamicMetadata);
+
+    const selectedModule = modulesContainer.get(token);
     if (!selectedModule) {
       throw new UnknownModuleException();
     }

packages/core/nest-application.ts

@@ -9,7 +9,10 @@ import {
   PipeTransform,
   WebSocketAdapter,
 } from '@nestjs/common';
-import { CorsOptions } from '@nestjs/common/interfaces/external/cors-options.interface';
+import {
+  CorsOptions,
+  CorsOptionsDelegate,
+} from '@nestjs/common/interfaces/external/cors-options.interface';
 import { NestApplicationOptions } from '@nestjs/common/interfaces/nest-application-options.interface';
 import { Logger } from '@nestjs/common/services/logger.service';
 import { loadPackage } from '@nestjs/common/utils/load-package.util';
@@ -102,11 +105,15 @@ export class NestApplication
     if (!this.appOptions || !this.appOptions.cors) {
       return undefined;
     }
-    const isCorsOptionsObj = isObject(this.appOptions.cors);
-    if (!isCorsOptionsObj) {
+    const passCustomOptions =
+      isObject(this.appOptions.cors) ||
+      typeof this.appOptions.cors === 'function';
+    if (!passCustomOptions) {
       return this.enableCors();
     }
-    return this.enableCors(this.appOptions.cors as CorsOptions);
+    return this.enableCors(
+      this.appOptions.cors as CorsOptions | CorsOptionsDelegate<any>,
+    );
   }
 
   public createServer<T = any>(): T {
@@ -224,7 +231,7 @@ export class NestApplication
     return this;
   }
 
-  public enableCors(options?: CorsOptions): void {
+  public enableCors(options?: CorsOptions | CorsOptionsDelegate<any>): void {
     this.httpAdapter.enableCors(options);
   }
 
@@ -348,7 +355,7 @@ export class NestApplication
   }
 
   private listenToPromise(microservice: INestMicroservice) {
-    return new Promise(async resolve => {
+    return new Promise<void>(async resolve => {
       await microservice.listen(resolve);
     });
   }

packages/core/nest-factory.ts

@@ -215,10 +215,10 @@ export class NestFactoryStatic {
   }
 
   private applyLogger(options: NestApplicationContextOptions | undefined) {
-    if (!options) {
+    if (!options || options?.logger === true || isNil(options?.logger)) {
       return;
     }
-    !isNil(options.logger) && Logger.overrideLogger(options.logger);
+    Logger.overrideLogger(options.logger);
   }
 
   private createHttpAdapter<T = any>(httpServer?: T): AbstractHttpAdapter {

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@nestjs/core",
-  "version": "7.5.5",
+  "version": "7.6.10",
   "description": "Nest - modern, fast, powerful node.js web framework (@core)",
   "author": "Kamil Mysliwiec",
   "license": "MIT",
@@ -30,17 +30,31 @@
     "@nuxtjs/opencollective": "0.3.2",
     "fast-safe-stringify": "2.0.7",
     "iterare": "1.2.1",
-    "object-hash": "2.0.3",
+    "object-hash": "2.1.1",
     "path-to-regexp": "3.2.0",
-    "tslib": "2.0.3",
-    "uuid": "8.3.1"
+    "tslib": "2.1.0",
+    "uuid": "8.3.2"
   },
   "devDependencies": {
-    "@nestjs/common": "7.5.5"
+    "@nestjs/common": "7.6.10"
   },
   "peerDependencies": {
     "@nestjs/common": "^7.0.0",
+    "@nestjs/microservices": "^7.0.0",
+    "@nestjs/platform-express": "^7.0.0",
+    "@nestjs/websockets": "^7.0.0",
     "reflect-metadata": "^0.1.12",
     "rxjs": "^6.0.0"
+  },
+  "peerDependenciesMeta": {
+    "@nestjs/websockets": {
+      "optional": true
+    },
+    "@nestjs/microservices": {
+      "optional": true
+    },
+    "@nestjs/platform-express": {
+      "optional": true
+    }
   }
 }

packages/core/router/router-explorer.ts

@@ -73,7 +73,7 @@ export class RouterExplorer {
     module: string,
     applicationRef: T,
     basePath: string,
-    host: string,
+    host: string | string[],
   ) {
     const { instance } = instanceWrapper;
     const routerPaths = this.scanForPaths(instance);
@@ -150,7 +150,7 @@ export class RouterExplorer {
     instanceWrapper: InstanceWrapper,
     moduleKey: string,
     basePath: string,
-    host: string,
+    host: string | string[],
   ) {
     (routePaths || []).forEach(pathProperties => {
       const { path, requestMethod } = pathProperties;
@@ -179,7 +179,7 @@ export class RouterExplorer {
     instanceWrapper: InstanceWrapper,
     moduleKey: string,
     basePath: string,
-    host: string,
+    host: string | string[],
   ) {
     const {
       path: paths,
@@ -216,14 +216,24 @@ export class RouterExplorer {
     });
   }
 
-  private applyHostFilter(host: string, handler: Function) {
+  private applyHostFilter(host: string | string[], handler: Function) {
     if (!host) {
       return handler;
     }
 
     const httpAdapterRef = this.container.getHttpAdapterRef();
-    const keys = [];
-    const re = pathToRegexp(host, keys);
+    const hosts = Array.isArray(host) ? host : [host];
+    const hostRegExps = hosts.map((host: string) => {
+      const keys = [];
+      const regexp = pathToRegexp(host, keys);
+      return { regexp, keys };
+    });
+
+    const unsupportedFilteringErrorMessage = Array.isArray(host)
+      ? `HTTP adapter does not support filtering on hosts: ["${host.join(
+          '", "',
+        )}"]`
+      : `HTTP adapter does not support filtering on host: "${host}"`;
 
     return <TRequest extends Record<string, any> = any, TResponse = any>(
       req: TRequest,
@@ -232,14 +242,17 @@ export class RouterExplorer {
     ) => {
       (req as Record<string, any>).hosts = {};
       const hostname = httpAdapterRef.getRequestHostname(req) || '';
-      const match = hostname.match(re);
-      if (match) {
-        keys.forEach((key, i) => (req.hosts[key.name] = match[i + 1]));
-        return handler(req, res, next);
+
+      for (const exp of hostRegExps) {
+        const match = hostname.match(exp.regexp);
+        if (match) {
+          exp.keys.forEach((key, i) => (req.hosts[key.name] = match[i + 1]));
+          return handler(req, res, next);
+        }
       }
       if (!next) {
         throw new InternalServerErrorException(
-          `HTTP adapter does not support filtering on host: "${host}"`,
+          unsupportedFilteringErrorMessage,
         );
       }
       return next();

packages/core/router/routes-resolver.ts

@@ -132,7 +132,7 @@ export class RoutesResolver implements Resolver {
 
   private getHostMetadata(
     metatype: Type<unknown> | Function,
-  ): string | undefined {
+  ): string | string[] | undefined {
     return Reflect.getMetadata(HOST_METADATA, metatype);
   }
 }

packages/core/test/injector/injector.spec.ts

@@ -189,28 +189,28 @@ describe('Injector', () => {
   });
 
   describe('loadMiddleware', () => {
-    let resolveConstructorParams: sinon.SinonSpy;
+    let loadInstanceSpy: sinon.SinonSpy;
 
     beforeEach(() => {
-      resolveConstructorParams = sinon.spy();
-      injector.resolveConstructorParams = resolveConstructorParams;
+      loadInstanceSpy = sinon.spy();
+      injector.loadInstance = loadInstanceSpy;
     });
 
-    it('should call "resolveConstructorParams" when instance is not resolved', () => {
+    it('should call "loadInstance" when instance is not resolved', () => {
       const collection = {
         get: (...args) => ({}),
         set: (...args) => {},
       };
 
       injector.loadMiddleware(
-        { metatype: { name: '' } } as any,
+        { metatype: { name: '', prototype: {} } } as any,
         collection as any,
         null,
       );
-      expect(resolveConstructorParams.called).to.be.true;
+      expect(loadInstanceSpy.called).to.be.true;
     });
 
-    it('should not call "resolveConstructorParams" when instance is not resolved', () => {
+    it('should not call "loadInstanceSpy" when instance is not resolved', () => {
       const collection = {
         get: (...args) => ({
           instance: {},
@@ -223,7 +223,7 @@ describe('Injector', () => {
         collection as any,
         null,
       );
-      expect(resolveConstructorParams.called).to.be.false;
+      expect(loadInstanceSpy.called).to.be.false;
     });
   });
 

packages/core/test/injector/module-token-factory.spec.ts

@@ -30,6 +30,7 @@ describe('ModuleTokenFactory', () => {
       const token = factory.create(type, {
         providers: [{}],
       } as any);
+
       expect(token).to.be.deep.eq(
         hash({
           id: moduleId,
@@ -62,6 +63,24 @@ describe('ModuleTokenFactory', () => {
           '{"providers":["Provider"],"exports":["Provider"]}',
         );
       });
+      it('should serialize symbols in a dynamic metadata object', () => {
+        const metadata = {
+          providers: [
+            {
+              provide: Symbol('a'),
+              useValue: 'a',
+            },
+            {
+              provide: Symbol('b'),
+              useValue: 'b',
+            },
+          ],
+        };
+
+        expect(factory.getDynamicMetadataToken(metadata)).to.be.eql(
+          '{"providers":[{"provide":"Symbol(a)","useValue":"a"},{"provide":"Symbol(b)","useValue":"b"}]}',
+        );
+      });
     });
     describe('when metadata does not exist', () => {
       it('should return empty string', () => {

packages/core/test/router/sse-stream.spec.ts

@@ -125,7 +125,7 @@ data: hello
         'Content-Type': 'text/event-stream',
         Connection: 'keep-alive',
         'Cache-Control':
-          'private, no-cache, no-store, must-revalidate, max-age=0',
+          'private, no-cache, no-store, must-revalidate, max-age=0, no-transform',
         'Transfer-Encoding': 'identity',
         Pragma: 'no-cache',
         Expire: '0',

packages/microservices/Readme.md

@@ -56,16 +56,21 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 
 #### Principal Sponsors
 <table style="text-align:center;"><tr><td>
-<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td><td>
-<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="180" valign="middle" /></a></td>
+<a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td>
+<td>
+<a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="200" valign="middle" /></a></td>
 </tr></table>
 
+#### Gold Sponsors
+
+<table style="text-align:center;"><tr><td>
+<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="170" valign="middle" /></a></td></tr></table>
+
 #### Silver Sponsors
 
 <table style="text-align:center;"><tr><td>
 <a href="https://neoteric.eu/" target="_blank"><img src="https://nestjs.com/img/neoteric-cut.png" width="120" valign="middle" /></a> </td><td>
   <a href="http://gojob.com" target="_blank"><img src="http://nestjs.com/img/gojob-logo.png" valign="middle" width="100" /></a> </td><td>
-    <a href="https://trilon.io" target="_blank"><img src="https://nestjs.com/img/trilon.svg" width="170" valign="middle" /></a> </td><td>
 <a href="http://www.leogistics.com" target="_blank"><img src="https://nestjs.com/img/leogistics-logo.jpeg" width="150" valign="middle" /></td><td>
 <a href="http://www.meetdandy.com" target="_blank"><img src="https://nestjs.com/img/dandy-wide-logo.png" width="150" valign="middle" /></td></tr></table>
 
@@ -90,6 +95,11 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
   <td align="center" valign="middle">
   <a href="https://genuinebee.com/" target="_blank"><img src="https://nestjs.com/img/genuinebee.svg" width="97" valign="middle" /></a> </td>
 <td align="center" valign="middle"><a href="https://sanyodigital.com/" target="_blank"><img src="https://nestjs.com/img/sanyo-digital.png" width="130" valign="middle" /></a></td></tr><tr><td align="center" valign="middle"><a href="https://vpn-review.com/vpn-for-torrenting" target="_blank"><img src="https://nestjs.com/img/vpn-review-logo.png" width="85" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://lambda-it.ch/" target="_blank"><img src="https://nestjs.com/img/lambda-it-logo.svg" width="115" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://pickwriters.com/top-10-translation-services" target="_blank"><img src="https://nestjs.com/img/pickwriters-logo.png" width="40" valign="middle" /></a></td><td align="center" valign="middle"><a href="https://thewordpoint.com/services/localization" target="_blank"><img src="https://nestjs.com/img/thewordpoint-logo.png" width="40" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://streamat.se/" target="_blank"><img src="https://nestjs.com/img/streamat-logo.png" width="120" valign="middle" /></a></td>
+<td align="center" valign="middle"><a href="https://filmen.nu/" target="_blank"><img src="https://nestjs.com/img/filmen-logo.png" width="120" valign="middle" /></a></td></tr><tr>
+<td align="center" valign="middle"><a href="https://meercode.io/" target="_blank"><img src="https://nestjs.com/img/meercode-logo.png" width="60" valign="middle" /></a></td>
+  <td align="center" valign="middle"><a href="https://www.najlepszeplatformyforex.pl/blog/broker-xtb/" target="_blank"><img src="https://nestjs.com/img/npf-logo.jpg" width="200" valign="middle" /></a></td>
+    <td align="center" valign="middle"><a href="https://thestandarddaily.com/" target="_blank"><img src="https://nestjs.com/img/the-standard-daily-logo.png" width="180" valign="middle" /></a></td>
   </tr></table>
 
 ## Backers

packages/microservices/client/client-kafka.ts

@@ -8,7 +8,6 @@ import {
 } from '../constants';
 import { KafkaResponseDeserializer } from '../deserializers/kafka-response.deserializer';
 import { KafkaHeaders } from '../enums';
-import { InvalidKafkaClientTopicPartitionException } from '../errors/invalid-kafka-client-topic-partition.exception';
 import { InvalidKafkaClientTopicException } from '../errors/invalid-kafka-client-topic.exception';
 import {
   BrokersFunction,
@@ -24,7 +23,7 @@ import {
 import {
   KafkaLogger,
   KafkaParser,
-  KafkaRoundRobinPartitionAssigner,
+  KafkaReplyPartitionAssigner,
 } from '../helpers';
 import {
   KafkaOptions,
@@ -46,7 +45,7 @@ export class ClientKafka extends ClientProxy {
   protected producer: Producer = null;
   protected logger = new Logger(ClientKafka.name);
   protected responsePatterns: string[] = [];
-  protected consumerAssignments: { [key: string]: number[] } = {};
+  protected consumerAssignments: { [key: string]: number } = {};
 
   protected brokers: string[] | BrokersFunction;
   protected clientId: string;
@@ -59,17 +58,16 @@ export class ClientKafka extends ClientProxy {
       this.getOptionsProp(this.options, 'client') || ({} as KafkaConfig);
     const consumerOptions =
       this.getOptionsProp(this.options, 'consumer') || ({} as ConsumerConfig);
+    const postfixId =
+      this.getOptionsProp(this.options, 'postfixId') || '-client';
 
     this.brokers = clientOptions.brokers || [KAFKA_DEFAULT_BROKER];
 
     // Append a unique id to the clientId and groupId
     // so they don't collide with a microservices client
     this.clientId =
-      (clientOptions.clientId || KAFKA_DEFAULT_CLIENT) +
-      (clientOptions.clientIdPostfix || '-client');
-    this.groupId =
-      (consumerOptions.groupId || KAFKA_DEFAULT_GROUP) +
-      (clientOptions.clientIdPostfix || '-client');
+      (clientOptions.clientId || KAFKA_DEFAULT_CLIENT) + postfixId;
+    this.groupId = (consumerOptions.groupId || KAFKA_DEFAULT_GROUP) + postfixId;
 
     kafkaPackage = loadPackage('kafkajs', ClientKafka.name, () =>
       require('kafkajs'),
@@ -99,11 +97,8 @@ export class ClientKafka extends ClientProxy {
     this.client = this.createClient();
 
     const partitionAssigners = [
-      (
-        config: ConstructorParameters<
-          typeof KafkaRoundRobinPartitionAssigner
-        >[0],
-      ) => new KafkaRoundRobinPartitionAssigner(config),
+      (config: ConstructorParameters<typeof KafkaReplyPartitionAssigner>[1]) =>
+        new KafkaReplyPartitionAssigner(this, config),
     ] as any[];
 
     const consumerOptions = Object.assign(
@@ -188,6 +183,10 @@ export class ClientKafka extends ClientProxy {
     };
   }
 
+  public getConsumerAssignments() {
+    return this.consumerAssignments;
+  }
+
   protected dispatchEvent(packet: OutgoingEvent): Promise<any> {
     const pattern = this.normalizePattern(packet.pattern);
     const outgoingEvent = this.serializer.serialize(packet.data);
@@ -202,17 +201,13 @@ export class ClientKafka extends ClientProxy {
   }
 
   protected getReplyTopicPartition(topic: string): string {
-    const topicAssignments = this.consumerAssignments[topic];
-    if (isUndefined(topicAssignments)) {
+    const minimumPartition = this.consumerAssignments[topic];
+    if (isUndefined(minimumPartition)) {
       throw new InvalidKafkaClientTopicException(topic);
     }
 
-    // if the current member isn't listening to
-    // any partitions on the topic then throw an error.
-    if (isUndefined(topicAssignments[0])) {
-      throw new InvalidKafkaClientTopicPartitionException(topic);
-    }
-    return topicAssignments[0].toString();
+    // get the minimum partition
+    return minimumPartition.toString();
   }
 
   protected publish(
@@ -241,7 +236,7 @@ export class ClientKafka extends ClientProxy {
         },
         this.options.send || {},
       );
-      this.producer.send(message);
+      this.producer.send(message).catch(err => callback({ err }));
 
       return () => this.routingMap.delete(packet.id);
     } catch (err) {
@@ -254,7 +249,18 @@ export class ClientKafka extends ClientProxy {
   }
 
   protected setConsumerAssignments(data: ConsumerGroupJoinEvent): void {
-    this.consumerAssignments = data.payload.memberAssignment;
+    const consumerAssignments: { [key: string]: number } = {};
+
+    // only need to set the minimum
+    Object.keys(data.payload.memberAssignment).forEach(memberId => {
+      const minimumPartition = Math.min(
+        ...data.payload.memberAssignment[memberId],
+      );
+
+      consumerAssignments[memberId] = minimumPartition;
+    });
+
+    this.consumerAssignments = consumerAssignments;
   }
 
   protected initializeSerializer(options: KafkaOptions['options']) {

packages/microservices/client/client-mqtt.ts

@@ -157,7 +157,7 @@ export class ClientMqtt extends ClientProxy {
     const pattern = this.normalizePattern(packet.pattern);
     const serializedPacket = this.serializer.serialize(packet);
 
-    return new Promise((resolve, reject) =>
+    return new Promise<void>((resolve, reject) =>
       this.mqttClient.publish(pattern, JSON.stringify(serializedPacket), err =>
         err ? reject(err) : resolve(),
       ),

packages/microservices/client/client-nats.ts

@@ -111,7 +111,7 @@ export class ClientNats extends ClientProxy {
     const pattern = this.normalizePattern(packet.pattern);
     const serializedPacket = this.serializer.serialize(packet);
 
-    return new Promise((resolve, reject) =>
+    return new Promise<void>((resolve, reject) =>
       this.natsClient.publish(pattern, serializedPacket as any, err =>
         err ? reject(err) : resolve(),
       ),

packages/microservices/client/client-proxy-factory.ts

@@ -1,6 +1,7 @@
 import { Transport } from '../enums/transport.enum';
 import {
   ClientOptions,
+  CustomClientOptions,
   TcpClientOptions,
 } from '../interfaces/client-metadata.interface';
 import { Closeable } from '../interfaces/closeable.interface';
@@ -30,7 +31,16 @@ export class ClientProxyFactory {
     clientOptions: { transport: Transport.GRPC } & ClientOptions,
   ): ClientGrpcProxy;
   public static create(clientOptions: ClientOptions): ClientProxy & Closeable;
-  public static create(clientOptions: ClientOptions): ClientProxy & Closeable {
+  public static create(
+    clientOptions: CustomClientOptions,
+  ): ClientProxy & Closeable;
+  public static create(
+    clientOptions: ClientOptions | CustomClientOptions,
+  ): ClientProxy & Closeable {
+    if (this.isCustomClientOptions(clientOptions)) {
+      const { customClass, options } = clientOptions;
+      return new customClass(options);
+    }
     const { transport, options } = clientOptions;
     switch (transport) {
       case Transport.REDIS:
@@ -49,4 +59,10 @@ export class ClientProxyFactory {
         return new ClientTCP(options as TcpClientOptions['options']);
     }
   }
+
+  private static isCustomClientOptions(
+    options: ClientOptions | CustomClientOptions,
+  ): options is CustomClientOptions {
+    return !!(options as CustomClientOptions).customClass;
+  }
 }

packages/microservices/client/client-proxy.ts

@@ -84,17 +84,25 @@ export abstract class ClientProxy {
   ): (packet: WritePacket) => void {
     return ({ err, response, isDisposed }: WritePacket) => {
       if (err) {
-        return observer.error(err);
+        return observer.error(this.serializeError(err));
       } else if (response !== undefined && isDisposed) {
-        observer.next(response);
+        observer.next(this.serializeResponse(response));
         return observer.complete();
       } else if (isDisposed) {
         return observer.complete();
       }
-      observer.next(response);
+      observer.next(this.serializeResponse(response));
     };
   }
 
+  protected serializeError(err: any): any {
+    return err;
+  }
+
+  protected serializeResponse(response: any): any {
+    return response;
+  }
+
   protected assignPacketId(packet: ReadPacket): ReadPacket & PacketId {
     const id = randomStringGenerator();
     return Object.assign(packet, { id });

packages/microservices/client/client-redis.ts

@@ -190,7 +190,7 @@ export class ClientRedis extends ClientProxy {
     const pattern = this.normalizePattern(packet.pattern);
     const serializedPacket = this.serializer.serialize(packet);
 
-    return new Promise((resolve, reject) =>
+    return new Promise<void>((resolve, reject) =>
       this.pubClient.publish(pattern, JSON.stringify(serializedPacket), err =>
         err ? reject(err) : resolve(),
       ),

packages/microservices/client/client-rmq.ts

@@ -16,9 +16,9 @@ import {
   RQM_DEFAULT_QUEUE_OPTIONS,
   RQM_DEFAULT_URL,
 } from '../constants';
+import { RmqUrl } from '../external/rmq-url.interface';
 import { ReadPacket, RmqOptions, WritePacket } from '../interfaces';
 import { ClientProxy } from './client-proxy';
-import { RmqUrl } from '../external/rmq-url.interface';
 
 let rqmPackage: any = {};
 
@@ -204,14 +204,14 @@ export class ClientRMQ extends ClientProxy {
   protected dispatchEvent(packet: ReadPacket): Promise<any> {
     const serializedPacket = this.serializer.serialize(packet);
 
-    return new Promise((resolve, reject) =>
+    return new Promise<void>((resolve, reject) =>
       this.channel.sendToQueue(
         this.queue,
         Buffer.from(JSON.stringify(serializedPacket)),
         {
           persistent: this.persistent,
         },
-        err => (err ? reject(err) : resolve()),
+        (err: unknown) => (err ? reject(err) : resolve()),
       ),
     );
   }

packages/microservices/context/rpc-context-creator.ts

@@ -41,9 +41,7 @@ export interface RpcHandlerMetadata {
 export class RpcContextCreator {
   private readonly contextUtils = new ContextUtils();
   private readonly rpcParamsFactory = new RpcParamsFactory();
-  private readonly handlerMetadataStorage = new HandlerMetadataStorage<
-    RpcHandlerMetadata
-  >();
+  private readonly handlerMetadataStorage = new HandlerMetadataStorage<RpcHandlerMetadata>();
 
   constructor(
     private readonly rpcProxy: RpcProxy,

packages/microservices/errors/invalid-kafka-client-topic-partition.exception.ts

@@ -1,9 +0,0 @@
-import { RuntimeException } from '@nestjs/core/errors/exceptions/runtime.exception';
-
-export class InvalidKafkaClientTopicPartitionException extends RuntimeException {
-  constructor(topic?: string) {
-    super(
-      `The client consumer subscribed to the topic (${topic}) which is not assigned to any partitions.`,
-    );
-  }
-}

packages/microservices/external/kafka-options.interface.ts

@@ -1,931 +0,0 @@
-/// <reference types="node" />
-
-import * as net from 'net';
-import * as tls from 'tls';
-
-type Without<T, U> = { [P in Exclude<keyof T, keyof U>]?: never };
-type XOR<T, U> = T | U extends object
-  ? (Without<T, U> & U) | (Without<U, T> & T)
-  : T | U;
-
-export declare class Kafka {
-  constructor(config: KafkaConfig);
-  producer(config?: ProducerConfig): Producer;
-  consumer(config?: ConsumerConfig): Consumer;
-  admin(config?: AdminConfig): Admin;
-  logger(): Logger;
-}
-
-export type BrokersFunction = () => string[] | Promise<string[]>;
-
-export interface KafkaConfig {
-  brokers: string[] | BrokersFunction;
-  ssl?: tls.ConnectionOptions | boolean;
-  sasl?: SASLOptions;
-  clientId?: string;
-  clientIdPostfix?: string;
-  connectionTimeout?: number;
-  authenticationTimeout?: number;
-  reauthenticationThreshold?: number;
-  requestTimeout?: number;
-  enforceRequestTimeout?: boolean;
-  retry?: RetryOptions;
-  socketFactory?: ISocketFactory;
-  logLevel?: logLevel;
-  logCreator?: logCreator;
-}
-
-export type ISocketFactory = (
-  host: string,
-  port: number,
-  ssl: tls.ConnectionOptions,
-  onConnect: () => void,
-) => net.Socket;
-
-export type SASLMechanism = 'plain' | 'scram-sha-256' | 'scram-sha-512' | 'aws';
-
-export interface SASLOptions {
-  mechanism: SASLMechanism;
-  username: string;
-  password: string;
-}
-
-export interface ProducerConfig {
-  createPartitioner?: ICustomPartitioner;
-  retry?: RetryOptions;
-  metadataMaxAge?: number;
-  allowAutoTopicCreation?: boolean;
-  idempotent?: boolean;
-  transactionalId?: string;
-  transactionTimeout?: number;
-  maxInFlightRequests?: number;
-}
-
-export interface Message {
-  key?: Buffer | string | null;
-  value: Buffer | string | null;
-  partition?: number;
-  headers?: IHeaders;
-  timestamp?: string;
-}
-
-export interface PartitionerArgs {
-  topic: string;
-  partitionMetadata: PartitionMetadata[];
-  message: Message;
-}
-
-export type ICustomPartitioner = () => (args: PartitionerArgs) => number;
-export type DefaultPartitioner = ICustomPartitioner;
-export type JavaCompatiblePartitioner = ICustomPartitioner;
-
-export let Partitioners: {
-  DefaultPartitioner: DefaultPartitioner;
-  JavaCompatiblePartitioner: JavaCompatiblePartitioner;
-};
-
-export type PartitionMetadata = {
-  partitionErrorCode: number;
-  partitionId: number;
-  leader: number;
-  replicas: number[];
-  isr: number[];
-  offlineReplicas?: number[];
-};
-
-export interface IHeaders {
-  [key: string]: Buffer | string;
-}
-
-export interface ConsumerConfig {
-  groupId: string;
-  partitionAssigners?: PartitionAssigner[];
-  metadataMaxAge?: number;
-  sessionTimeout?: number;
-  rebalanceTimeout?: number;
-  heartbeatInterval?: number;
-  maxBytesPerPartition?: number;
-  minBytes?: number;
-  maxBytes?: number;
-  maxWaitTimeInMs?: number;
-  retry?: RetryOptions & {
-    restartOnFailure?: (err: Error) => Promise<boolean>;
-  };
-  allowAutoTopicCreation?: boolean;
-  maxInFlightRequests?: number;
-  readUncommitted?: boolean;
-  rackId?: string;
-}
-
-export type PartitionAssigner = (config: { cluster: Cluster }) => Assigner;
-
-export interface CoordinatorMetadata {
-  errorCode: number;
-  coordinator: {
-    nodeId: number;
-    host: string;
-    port: number;
-  };
-}
-
-export type Cluster = {
-  isConnected(): boolean;
-  connect(): Promise<void>;
-  disconnect(): Promise<void>;
-  refreshMetadata(): Promise<void>;
-  refreshMetadataIfNecessary(): Promise<void>;
-  addTargetTopic(topic: string): Promise<void>;
-  findBroker(node: { nodeId: string }): Promise<Broker>;
-  findControllerBroker(): Promise<Broker>;
-  findTopicPartitionMetadata(topic: string): PartitionMetadata[];
-  findLeaderForPartitions(
-    topic: string,
-    partitions: number[],
-  ): { [leader: string]: number[] };
-  findGroupCoordinator(group: { groupId: string }): Promise<Broker>;
-  findGroupCoordinatorMetadata(group: {
-    groupId: string;
-  }): Promise<CoordinatorMetadata>;
-  defaultOffset(config: { fromBeginning: boolean }): number;
-  fetchTopicsOffset(
-    topics: Array<
-      {
-        topic: string;
-        partitions: Array<{ partition: number }>;
-      } & XOR<{ fromBeginning: boolean }, { fromTimestamp: number }>
-    >,
-  ): Promise<{
-    topic: string;
-    partitions: Array<{ partition: number; offset: string }>;
-  }>;
-};
-
-export type Assignment = { [topic: string]: number[] };
-
-export type GroupMember = { memberId: string; memberMetadata: Buffer };
-
-export type GroupMemberAssignment = {
-  memberId: string;
-  memberAssignment: Buffer;
-};
-
-export type GroupState = { name: string; metadata: Buffer };
-
-export type Assigner = {
-  name: string;
-  version: number;
-  assign(group: {
-    members: GroupMember[];
-    topics: string[];
-  }): Promise<GroupMemberAssignment[]>;
-  protocol(subscription: { topics: string[] }): GroupState;
-};
-
-export interface RetryOptions {
-  maxRetryTime?: number;
-  initialRetryTime?: number;
-  factor?: number;
-  multiplier?: number;
-  retries?: number;
-}
-
-export interface AdminConfig {
-  retry?: RetryOptions;
-}
-
-export interface ITopicConfig {
-  topic: string;
-  numPartitions?: number;
-  replicationFactor?: number;
-  replicaAssignment?: object[];
-  configEntries?: object[];
-}
-
-export interface ITopicPartitionConfig {
-  topic: string;
-  count: number;
-  assignments?: Array<Array<number>>;
-}
-
-export interface ITopicMetadata {
-  name: string;
-  partitions: PartitionMetadata[];
-}
-
-export enum ResourceTypes {
-  UNKNOWN = 0,
-  ANY = 1,
-  TOPIC = 2,
-  GROUP = 3,
-  CLUSTER = 4,
-  TRANSACTIONAL_ID = 5,
-  DELEGATION_TOKEN = 6,
-}
-
-export interface ResourceConfigQuery {
-  type: ResourceTypes;
-  name: string;
-  configNames?: string[];
-}
-
-export interface ConfigEntries {
-  configName: string;
-  configValue: string;
-  isDefault: boolean;
-  isSensitive: boolean;
-  readOnly: boolean;
-  configSynonyms: ConfigSynonyms[];
-}
-
-export interface ConfigSynonyms {
-  configName: string;
-  configValue: string;
-  configSource: number;
-}
-
-export interface DescribeConfigResponse {
-  resources: {
-    configEntries: ConfigEntries[];
-    errorCode: number;
-    errorMessage: string;
-    resourceName: string;
-    resourceType: ResourceTypes;
-  }[];
-  throttleTime: number;
-}
-
-export interface IResourceConfig {
-  type: ResourceTypes;
-  name: string;
-  configEntries: { name: string; value: string }[];
-}
-
-type ValueOf<T> = T[keyof T];
-
-export type AdminEvents = {
-  CONNECT: 'admin.connect';
-  DISCONNECT: 'admin.disconnect';
-  REQUEST: 'admin.network.request';
-  REQUEST_TIMEOUT: 'admin.network.request_timeout';
-  REQUEST_QUEUE_SIZE: 'admin.network.request_queue_size';
-};
-
-export interface InstrumentationEvent<T> {
-  id: string;
-  type: string;
-  timestamp: number;
-  payload: T;
-}
-
-export type RemoveInstrumentationEventListener<T> = () => void;
-
-export type ConnectEvent = InstrumentationEvent<null>;
-export type DisconnectEvent = InstrumentationEvent<null>;
-export type RequestEvent = InstrumentationEvent<{
-  apiKey: number;
-  apiName: string;
-  apiVersion: number;
-  broker: string;
-  clientId: string;
-  correlationId: number;
-  createdAt: number;
-  duration: number;
-  pendingDuration: number;
-  sentAt: number;
-  size: number;
-}>;
-export type RequestTimeoutEvent = InstrumentationEvent<{
-  apiKey: number;
-  apiName: string;
-  apiVersion: number;
-  broker: string;
-  clientId: string;
-  correlationId: number;
-  createdAt: number;
-  pendingDuration: number;
-  sentAt: number;
-}>;
-export type RequestQueueSizeEvent = InstrumentationEvent<{
-  broker: string;
-  clientId: string;
-  queueSize: number;
-}>;
-
-export interface SeekEntry {
-  partition: number;
-  offset: string;
-}
-
-export type Admin = {
-  connect(): Promise<void>;
-  disconnect(): Promise<void>;
-  listTopics(): Promise<string[]>;
-  createTopics(options: {
-    validateOnly?: boolean;
-    waitForLeaders?: boolean;
-    timeout?: number;
-    topics: ITopicConfig[];
-  }): Promise<boolean>;
-  deleteTopics(options: { topics: string[]; timeout?: number }): Promise<void>;
-  createPartitions(options: {
-    validateOnly?: boolean;
-    timeout?: number;
-    topicPartitions: ITopicPartitionConfig[];
-  }): Promise<boolean>;
-  fetchTopicMetadata(options?: {
-    topics: string[];
-  }): Promise<{ topics: Array<ITopicMetadata> }>;
-  fetchOffsets(options: {
-    groupId: string;
-    topic: string;
-  }): Promise<Array<SeekEntry & { metadata: string | null }>>;
-  fetchTopicOffsets(
-    topic: string,
-  ): Promise<Array<SeekEntry & { high: string; low: string }>>;
-  fetchTopicOffsetsByTimestamp(
-    topic: string,
-    timestamp?: number,
-  ): Promise<Array<SeekEntry>>;
-  describeCluster(): Promise<{
-    brokers: Array<{ nodeId: number; host: string; port: number }>;
-    controller: number | null;
-    clusterId: string;
-  }>;
-  setOffsets(options: {
-    groupId: string;
-    topic: string;
-    partitions: SeekEntry[];
-  }): Promise<void>;
-  resetOffsets(options: {
-    groupId: string;
-    topic: string;
-    earliest: boolean;
-  }): Promise<void>;
-  describeConfigs(configs: {
-    resources: ResourceConfigQuery[];
-    includeSynonyms: boolean;
-  }): Promise<DescribeConfigResponse>;
-  alterConfigs(configs: {
-    validateOnly: boolean;
-    resources: IResourceConfig[];
-  }): Promise<any>;
-  listGroups(): Promise<{ groups: GroupOverview[] }>;
-  deleteGroups(groupIds: string[]): Promise<DeleteGroupsResult[]>;
-  describeGroups(groupIds: string[]): Promise<GroupDescriptions>;
-  logger(): Logger;
-  on(
-    eventName: ValueOf<AdminEvents>,
-    listener: (...args: any[]) => void,
-  ): RemoveInstrumentationEventListener<typeof eventName>;
-  events: AdminEvents;
-};
-
-export let PartitionAssigners: { roundRobin: PartitionAssigner };
-
-export interface ISerializer<T> {
-  encode(value: T): Buffer;
-  decode(buffer: Buffer): T | null;
-}
-
-export type MemberMetadata = {
-  version: number;
-  topics: string[];
-  userData: Buffer;
-};
-
-export type MemberAssignment = {
-  version: number;
-  assignment: Assignment;
-  userData: Buffer;
-};
-
-export let AssignerProtocol: {
-  MemberMetadata: ISerializer<MemberMetadata>;
-  MemberAssignment: ISerializer<MemberAssignment>;
-};
-
-export enum logLevel {
-  NOTHING = 0,
-  ERROR = 1,
-  WARN = 2,
-  INFO = 4,
-  DEBUG = 5,
-}
-
-export interface LogEntry {
-  namespace: string;
-  level: logLevel;
-  label: string;
-  log: LoggerEntryContent;
-}
-
-export interface LoggerEntryContent {
-  readonly timestamp: Date;
-  readonly message: string;
-  [key: string]: any;
-}
-
-export type logCreator = (logLevel: logLevel) => (entry: LogEntry) => void;
-
-export type Logger = {
-  info: (message: string, extra?: object) => void;
-  error: (message: string, extra?: object) => void;
-  warn: (message: string, extra?: object) => void;
-  debug: (message: string, extra?: object) => void;
-};
-
-export type Broker = {
-  isConnected(): boolean;
-  connect(): Promise<void>;
-  disconnect(): Promise<void>;
-  apiVersions(): Promise<{
-    [apiKey: number]: { minVersion: number; maxVersion: number };
-  }>;
-  metadata(
-    topics: string[],
-  ): Promise<{
-    brokers: Array<{
-      nodeId: number;
-      host: string;
-      port: number;
-      rack?: string;
-    }>;
-    topicMetadata: Array<{
-      topicErrorCode: number;
-      topic: number;
-      partitionMetadata: PartitionMetadata[];
-    }>;
-  }>;
-  offsetCommit(request: {
-    groupId: string;
-    groupGenerationId: number;
-    memberId: string;
-    retentionTime?: number;
-    topics: Array<{
-      topic: string;
-      partitions: Array<{ partition: number; offset: string }>;
-    }>;
-  }): Promise<any>;
-  fetch(request: {
-    replicaId?: number;
-    isolationLevel?: number;
-    maxWaitTime?: number;
-    minBytes?: number;
-    maxBytes?: number;
-    topics: Array<{
-      topic: string;
-      partitions: Array<{
-        partition: number;
-        fetchOffset: string;
-        maxBytes: number;
-      }>;
-    }>;
-    rackId?: string;
-  }): Promise<any>;
-};
-
-export type KafkaMessage = {
-  key: Buffer;
-  value: Buffer | null;
-  timestamp: string;
-  size: number;
-  attributes: number;
-  offset: string;
-  headers?: IHeaders;
-};
-
-export interface ProducerRecord {
-  topic: string;
-  messages: Message[];
-  acks?: number;
-  timeout?: number;
-  compression?: CompressionTypes;
-}
-
-export type RecordMetadata = {
-  topicName: string;
-  partition: number;
-  errorCode: number;
-  offset: string;
-  timestamp: string;
-};
-
-export interface TopicMessages {
-  topic: string;
-  messages: Message[];
-}
-
-export interface ProducerBatch {
-  acks?: number;
-  timeout?: number;
-  compression?: CompressionTypes;
-  topicMessages?: TopicMessages[];
-}
-
-export interface PartitionOffset {
-  partition: number;
-  offset: string;
-}
-
-export interface TopicOffsets {
-  topic: string;
-  partitions: PartitionOffset[];
-}
-
-export interface Offsets {
-  topics: TopicOffsets[];
-}
-
-type Sender = {
-  send(record: ProducerRecord): Promise<RecordMetadata[]>;
-  sendBatch(batch: ProducerBatch): Promise<RecordMetadata[]>;
-};
-
-export type ProducerEvents = {
-  CONNECT: 'producer.connect';
-  DISCONNECT: 'producer.disconnect';
-  REQUEST: 'producer.network.request';
-  REQUEST_TIMEOUT: 'producer.network.request_timeout';
-  REQUEST_QUEUE_SIZE: 'producer.network.request_queue_size';
-};
-
-export type Producer = Sender & {
-  connect(): Promise<void>;
-  disconnect(): Promise<void>;
-  isIdempotent(): boolean;
-  events: ProducerEvents;
-  on(
-    eventName: ValueOf<ProducerEvents>,
-    listener: (...args: any[]) => void,
-  ): RemoveInstrumentationEventListener<typeof eventName>;
-  transaction(): Promise<Transaction>;
-  logger(): Logger;
-};
-
-export type Transaction = Sender & {
-  sendOffsets(offsets: Offsets & { consumerGroupId: string }): Promise<void>;
-  commit(): Promise<void>;
-  abort(): Promise<void>;
-  isActive(): boolean;
-};
-
-export type ConsumerGroup = {
-  groupId: string;
-  generationId: number;
-  memberId: string;
-  coordinator: Broker;
-};
-
-export type MemberDescription = {
-  clientHost: string;
-  clientId: string;
-  memberId: string;
-  memberAssignment: Buffer;
-  memberMetadata: Buffer;
-};
-
-export type GroupDescription = {
-  groupId: string;
-  members: MemberDescription[];
-  protocol: string;
-  protocolType: string;
-  state: string;
-};
-
-export type GroupDescriptions = {
-  groups: GroupDescription[];
-};
-
-export type TopicPartitions = { topic: string; partitions: number[] };
-export type TopicPartitionOffsetAndMetadata = {
-  topic: string;
-  partition: number;
-  offset: string;
-  metadata?: string | null;
-};
-
-// TODO: Remove with 2.x
-export type TopicPartitionOffsetAndMedata = TopicPartitionOffsetAndMetadata;
-
-export type Batch = {
-  topic: string;
-  partition: number;
-  highWatermark: string;
-  messages: KafkaMessage[];
-  isEmpty(): boolean;
-  firstOffset(): string | null;
-  lastOffset(): string;
-  offsetLag(): string;
-  offsetLagLow(): string;
-};
-
-export type GroupOverview = {
-  groupId: string;
-  protocolType: string;
-};
-
-export type DeleteGroupsResult = {
-  groupId: string;
-  errorCode?: number;
-};
-
-export type ConsumerEvents = {
-  HEARTBEAT: 'consumer.heartbeat';
-  COMMIT_OFFSETS: 'consumer.commit_offsets';
-  GROUP_JOIN: 'consumer.group_join';
-  FETCH_START: 'consumer.fetch_start';
-  FETCH: 'consumer.fetch';
-  START_BATCH_PROCESS: 'consumer.start_batch_process';
-  END_BATCH_PROCESS: 'consumer.end_batch_process';
-  CONNECT: 'consumer.connect';
-  DISCONNECT: 'consumer.disconnect';
-  STOP: 'consumer.stop';
-  CRASH: 'consumer.crash';
-  REQUEST: 'consumer.network.request';
-  REQUEST_TIMEOUT: 'consumer.network.request_timeout';
-  REQUEST_QUEUE_SIZE: 'consumer.network.request_queue_size';
-};
-export type ConsumerHeartbeatEvent = InstrumentationEvent<{
-  groupId: string;
-  memberId: string;
-  groupGenerationId: number;
-}>;
-export type ConsumerCommitOffsetsEvent = InstrumentationEvent<{
-  groupId: string;
-  memberId: string;
-  groupGenerationId: number;
-  topics: {
-    topic: string;
-    partitions: {
-      offset: string;
-      partition: string;
-    }[];
-  }[];
-}>;
-export interface IMemberAssignment {
-  [key: string]: number[];
-}
-export type ConsumerGroupJoinEvent = InstrumentationEvent<{
-  duration: number;
-  groupId: string;
-  isLeader: boolean;
-  leaderId: string;
-  groupProtocol: string;
-  memberId: string;
-  memberAssignment: IMemberAssignment;
-}>;
-export type ConsumerFetchEvent = InstrumentationEvent<{
-  numberOfBatches: number;
-  duration: number;
-}>;
-interface IBatchProcessEvent {
-  topic: string;
-  partition: number;
-  highWatermark: string;
-  offsetLag: string;
-  offsetLagLow: string;
-  batchSize: number;
-  firstOffset: string;
-  lastOffset: string;
-}
-export type ConsumerStartBatchProcessEvent = InstrumentationEvent<
-  IBatchProcessEvent
->;
-export type ConsumerEndBatchProcessEvent = InstrumentationEvent<
-  IBatchProcessEvent & { duration: number }
->;
-export type ConsumerCrashEvent = InstrumentationEvent<{
-  error: Error;
-  groupId: string;
-}>;
-
-export interface OffsetsByTopicPartition {
-  topics: TopicOffsets[];
-}
-
-export interface EachMessagePayload {
-  topic: string;
-  partition: number;
-  message: KafkaMessage;
-}
-
-export interface EachBatchPayload {
-  batch: Batch;
-  resolveOffset(offset: string): void;
-  heartbeat(): Promise<void>;
-  commitOffsetsIfNecessary(offsets?: Offsets): Promise<void>;
-  uncommittedOffsets(): OffsetsByTopicPartition;
-  isRunning(): boolean;
-  isStale(): boolean;
-}
-
-/**
- * Type alias to keep compatibility with @types/kafkajs
- * @see https://github.com/DefinitelyTyped/DefinitelyTyped/blob/712ad9d59ccca6a3cc92f347fea0d1c7b02f5eeb/types/kafkajs/index.d.ts#L321-L325
- */
-export type ConsumerEachMessagePayload = EachMessagePayload;
-
-/**
- * Type alias to keep compatibility with @types/kafkajs
- * @see https://github.com/DefinitelyTyped/DefinitelyTyped/blob/712ad9d59ccca6a3cc92f347fea0d1c7b02f5eeb/types/kafkajs/index.d.ts#L327-L336
- */
-export type ConsumerEachBatchPayload = EachBatchPayload;
-
-export type ConsumerRunConfig = {
-  autoCommit?: boolean;
-  autoCommitInterval?: number | null;
-  autoCommitThreshold?: number | null;
-  eachBatchAutoResolve?: boolean;
-  partitionsConsumedConcurrently?: number;
-  eachBatch?: (payload: EachBatchPayload) => Promise<void>;
-  eachMessage?: (payload: EachMessagePayload) => Promise<void>;
-};
-
-export type ConsumerSubscribeTopic = {
-  topic: string | RegExp;
-  fromBeginning?: boolean;
-};
-
-export type Consumer = {
-  connect(): Promise<void>;
-  disconnect(): Promise<void>;
-  subscribe(topic: ConsumerSubscribeTopic): Promise<void>;
-  stop(): Promise<void>;
-  run(config?: ConsumerRunConfig): Promise<void>;
-  commitOffsets(
-    topicPartitions: Array<TopicPartitionOffsetAndMetadata>,
-  ): Promise<void>;
-  seek(topicPartition: {
-    topic: string;
-    partition: number;
-    offset: string;
-  }): void;
-  describeGroup(): Promise<GroupDescription>;
-  pause(topics: Array<{ topic: string; partitions?: number[] }>): void;
-  paused(): TopicPartitions[];
-  resume(topics: Array<{ topic: string; partitions?: number[] }>): void;
-  on(
-    eventName: ValueOf<ConsumerEvents>,
-    listener: (...args: any[]) => void,
-  ): RemoveInstrumentationEventListener<typeof eventName>;
-  logger(): Logger;
-  events: ConsumerEvents;
-};
-
-export enum CompressionTypes {
-  None = 0,
-  GZIP = 1,
-  Snappy = 2,
-  LZ4 = 3,
-  ZSTD = 4,
-}
-
-export let CompressionCodecs: {
-  [CompressionTypes.GZIP]: () => any;
-  [CompressionTypes.Snappy]: () => any;
-  [CompressionTypes.LZ4]: () => any;
-  [CompressionTypes.ZSTD]: () => any;
-};
-
-export declare class KafkaJSError extends Error {
-  constructor(e: Error | string, metadata?: KafkaJSErrorMetadata);
-}
-
-export declare class KafkaJSNonRetriableError extends KafkaJSError {
-  constructor(e: Error | string);
-}
-
-export declare class KafkaJSProtocolError extends KafkaJSError {
-  constructor(e: Error | string);
-}
-
-export declare class KafkaJSOffsetOutOfRange extends KafkaJSProtocolError {
-  constructor(e: Error | string, metadata?: KafkaJSOffsetOutOfRangeMetadata);
-}
-
-export declare class KafkaJSNumberOfRetriesExceeded extends KafkaJSNonRetriableError {
-  constructor(
-    e: Error | string,
-    metadata?: KafkaJSNumberOfRetriesExceededMetadata,
-  );
-}
-
-export declare class KafkaJSConnectionError extends KafkaJSError {
-  constructor(e: Error | string, metadata?: KafkaJSConnectionErrorMetadata);
-}
-
-export declare class KafkaJSRequestTimeoutError extends KafkaJSError {
-  constructor(e: Error | string, metadata?: KafkaJSRequestTimeoutErrorMetadata);
-}
-
-export declare class KafkaJSMetadataNotLoaded extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSTopicMetadataNotLoaded extends KafkaJSMetadataNotLoaded {
-  constructor(
-    e: Error | string,
-    metadata?: KafkaJSTopicMetadataNotLoadedMetadata,
-  );
-}
-
-export declare class KafkaJSStaleTopicMetadataAssignment extends KafkaJSError {
-  constructor(
-    e: Error | string,
-    metadata?: KafkaJSStaleTopicMetadataAssignmentMetadata,
-  );
-}
-
-export declare class KafkaJSServerDoesNotSupportApiKey extends KafkaJSNonRetriableError {
-  constructor(
-    e: Error | string,
-    metadata?: KafkaJSServerDoesNotSupportApiKeyMetadata,
-  );
-}
-
-export declare class KafkaJSBrokerNotFound extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSPartialMessageError extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSSASLAuthenticationError extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSGroupCoordinatorNotFound extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSNotImplemented extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSTimeout extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSLockTimeout extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSUnsupportedMagicByteInMessageSet extends KafkaJSError {
-  constructor();
-}
-
-export declare class KafkaJSDeleteGroupsError extends KafkaJSError {
-  constructor(e: Error | string, groups?: KafkaJSDeleteGroupsErrorGroups[]);
-}
-
-export interface KafkaJSDeleteGroupsErrorGroups {
-  groupId: string;
-  errorCode: number;
-  error: KafkaJSError;
-}
-
-export interface KafkaJSErrorMetadata {
-  retriable?: boolean;
-  topic?: string;
-  partitionId?: number;
-  metadata?: PartitionMetadata;
-}
-
-export interface KafkaJSOffsetOutOfRangeMetadata {
-  topic: string;
-  partition: number;
-}
-
-export interface KafkaJSNumberOfRetriesExceededMetadata {
-  retryCount: number;
-  retryTime: number;
-}
-
-export interface KafkaJSConnectionErrorMetadata {
-  broker?: string;
-  code?: string;
-}
-
-export interface KafkaJSRequestTimeoutErrorMetadata {
-  broker: string;
-  clientId: string;
-  correlationId: number;
-  createdAt: number;
-  sentAt: number;
-  pendingDuration: number;
-}
-
-export interface KafkaJSTopicMetadataNotLoadedMetadata {
-  topic: string;
-}
-
-export interface KafkaJSStaleTopicMetadataAssignmentMetadata {
-  topic: string;
-  unknownPartitions: PartitionMetadata[];
-}
-
-export interface KafkaJSServerDoesNotSupportApiKeyMetadata {
-  apiKey: number;
-  apiName: string;
-}

packages/microservices/external/kafka.interface.ts

@@ -1,9 +1,19 @@
 /**
- * @see https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/kafkajs/index.d.ts
+ * Do NOT add NestJS logic to this interface.  It is meant to ONLY represent the types for the kafkajs package.
+ *
+ * @see https://github.com/tulios/kafkajs/blob/master/types/index.d.ts
  */
+
+/// <reference types="node" />
+
 import * as net from 'net';
 import * as tls from 'tls';
 
+type Without<T, U> = { [P in Exclude<keyof T, keyof U>]?: never };
+type XOR<T, U> = T | U extends object
+  ? (Without<T, U> & U) | (Without<U, T> & T)
+  : T | U;
+
 export declare class Kafka {
   constructor(config: KafkaConfig);
   producer(config?: ProducerConfig): Producer;
@@ -19,7 +29,6 @@ export interface KafkaConfig {
   ssl?: tls.ConnectionOptions | boolean;
   sasl?: SASLOptions;
   clientId?: string;
-  clientIdPostfix?: string;
   connectionTimeout?: number;
   authenticationTimeout?: number;
   reauthenticationThreshold?: number;
@@ -31,19 +40,40 @@ export interface KafkaConfig {
   logCreator?: logCreator;
 }
 
-export type ISocketFactory = (
-  host: string,
-  port: number,
-  ssl: tls.ConnectionOptions,
-  onConnect: () => void,
-) => net.Socket;
-
-export interface SASLOptions {
-  mechanism: 'plain' | 'scram-sha-256' | 'scram-sha-512' | 'aws';
-  username: string;
-  password: string;
+export interface ISocketFactoryArgs {
+  host: string;
+  port: number;
+  ssl: tls.ConnectionOptions;
+  onConnect: () => void;
 }
 
+export type ISocketFactory = (args: ISocketFactoryArgs) => net.Socket;
+
+export interface OauthbearerProviderResponse {
+  value: string;
+}
+
+type SASLMechanismOptionsMap = {
+  plain: { username: string; password: string };
+  'scram-sha-256': { username: string; password: string };
+  'scram-sha-512': { username: string; password: string };
+  aws: {
+    authorizationIdentity: string;
+    accessKeyId: string;
+    secretAccessKey: string;
+    sessionToken?: string;
+  };
+  oauthbearer: {
+    oauthBearerProvider: () => Promise<OauthbearerProviderResponse>;
+  };
+};
+
+export type SASLMechanism = keyof SASLMechanismOptionsMap;
+type SASLMechanismOptions<T> = T extends SASLMechanism
+  ? { mechanism: T } & SASLMechanismOptionsMap[T]
+  : never;
+export type SASLOptions = SASLMechanismOptions<SASLMechanism>;
+
 export interface ProducerConfig {
   createPartitioner?: ICustomPartitioner;
   retry?: RetryOptions;
@@ -70,24 +100,25 @@ export interface PartitionerArgs {
 }
 
 export type ICustomPartitioner = () => (args: PartitionerArgs) => number;
-export type DefaultPartitioner = (args: PartitionerArgs) => number;
-export type JavaCompatiblePartitioner = (args: PartitionerArgs) => number;
+export type DefaultPartitioner = ICustomPartitioner;
+export type JavaCompatiblePartitioner = ICustomPartitioner;
 
 export let Partitioners: {
   DefaultPartitioner: DefaultPartitioner;
   JavaCompatiblePartitioner: JavaCompatiblePartitioner;
 };
 
-export interface PartitionMetadata {
+export type PartitionMetadata = {
   partitionErrorCode: number;
   partitionId: number;
   leader: number;
   replicas: number[];
   isr: number[];
-}
+  offlineReplicas?: number[];
+};
 
 export interface IHeaders {
-  [key: string]: Buffer;
+  [key: string]: Buffer | string | undefined;
 }
 
 export interface ConsumerConfig {
@@ -101,15 +132,16 @@ export interface ConsumerConfig {
   minBytes?: number;
   maxBytes?: number;
   maxWaitTimeInMs?: number;
-  retry?: RetryOptions;
+  retry?: RetryOptions & {
+    restartOnFailure?: (err: Error) => Promise<boolean>;
+  };
   allowAutoTopicCreation?: boolean;
   maxInFlightRequests?: number;
   readUncommitted?: boolean;
+  rackId?: string;
 }
 
-export interface PartitionAssigner {
-  new (config: { cluster: Cluster }): Assigner;
-}
+export type PartitionAssigner = (config: { cluster: Cluster }) => Assigner;
 
 export interface CoordinatorMetadata {
   errorCode: number;
@@ -120,7 +152,7 @@ export interface CoordinatorMetadata {
   };
 }
 
-export interface Cluster {
+export type Cluster = {
   isConnected(): boolean;
   connect(): Promise<void>;
   disconnect(): Promise<void>;
@@ -140,46 +172,38 @@ export interface Cluster {
   }): Promise<CoordinatorMetadata>;
   defaultOffset(config: { fromBeginning: boolean }): number;
   fetchTopicsOffset(
-    topics: Array<{
-      topic: string;
-      partitions: Array<{ partition: number }>;
-      fromBeginning: boolean;
-    }>,
+    topics: Array<
+      {
+        topic: string;
+        partitions: Array<{ partition: number }>;
+      } & XOR<{ fromBeginning: boolean }, { fromTimestamp: number }>
+    >,
   ): Promise<{
     topic: string;
     partitions: Array<{ partition: number; offset: string }>;
   }>;
-}
+};
 
-export interface Assignment {
-  [topic: string]: number[];
-}
+export type Assignment = { [topic: string]: number[] };
 
-export interface GroupMember {
-  memberId: string;
-  memberMetadata: MemberMetadata;
-}
+export type GroupMember = { memberId: string; memberMetadata: Buffer };
 
-export interface GroupMemberAssignment {
+export type GroupMemberAssignment = {
   memberId: string;
   memberAssignment: Buffer;
-}
+};
 
-export interface GroupState {
-  name: string;
-  metadata: Buffer;
-}
+export type GroupState = { name: string; metadata: Buffer };
 
-export interface Assigner {
+export type Assigner = {
   name: string;
   version: number;
   assign(group: {
     members: GroupMember[];
     topics: string[];
-    userData: Buffer;
   }): Promise<GroupMemberAssignment[]>;
-  protocol(subscription: { topics: string[]; userData: Buffer }): GroupState;
-}
+  protocol(subscription: { topics: string[] }): GroupState;
+};
 
 export interface RetryOptions {
   maxRetryTime?: number;
@@ -201,12 +225,22 @@ export interface ITopicConfig {
   configEntries?: object[];
 }
 
+export interface ITopicPartitionConfig {
+  topic: string;
+  count: number;
+  assignments?: Array<Array<number>>;
+}
+
 export interface ITopicMetadata {
   name: string;
   partitions: PartitionMetadata[];
 }
 
-export enum ResourceType {
+/**
+ * @deprecated
+ * Use ConfigResourceTypes or AclResourceTypes
+ */
+export enum ResourceTypes {
   UNKNOWN = 0,
   ANY = 1,
   TOPIC = 2,
@@ -216,10 +250,58 @@ export enum ResourceType {
   DELEGATION_TOKEN = 6,
 }
 
+export enum AclResourceTypes {
+  UNKNOWN = 0,
+  ANY = 1,
+  TOPIC = 2,
+  GROUP = 3,
+  CLUSTER = 4,
+  TRANSACTIONAL_ID = 5,
+  DELEGATION_TOKEN = 6,
+}
+
+export enum ConfigResourceTypes {
+  UNKNOWN = 0,
+  TOPIC = 2,
+  BROKER = 4,
+  BROKER_LOGGER = 8,
+}
+
+export enum AclPermissionTypes {
+  UNKNOWN = 0,
+  ANY = 1,
+  DENY = 2,
+  ALLOW = 3,
+}
+
+export enum AclOperationTypes {
+  UNKNOWN = 0,
+  ANY = 1,
+  ALL = 2,
+  READ = 3,
+  WRITE = 4,
+  CREATE = 5,
+  DELETE = 6,
+  ALTER = 7,
+  DESCRIBE = 8,
+  CLUSTER_ACTION = 9,
+  DESCRIBE_CONFIGS = 10,
+  ALTER_CONFIGS = 11,
+  IDEMPOTENT_WRITE = 12,
+}
+
+export enum ResourcePatternTypes {
+  UNKNOWN = 0,
+  ANY = 1,
+  MATCH = 2,
+  LITERAL = 3,
+  PREFIXED = 4,
+}
+
 export interface ResourceConfigQuery {
-  type: ResourceType;
+  type: ResourceTypes | ConfigResourceTypes;
   name: string;
-  configNames: string[];
+  configNames?: string[];
 }
 
 export interface ConfigEntries {
@@ -243,26 +325,26 @@ export interface DescribeConfigResponse {
     errorCode: number;
     errorMessage: string;
     resourceName: string;
-    resourceType: ResourceType;
+    resourceType: ResourceTypes | ConfigResourceTypes;
   }[];
   throttleTime: number;
 }
 
 export interface IResourceConfig {
-  type: ResourceType;
+  type: ResourceTypes | ConfigResourceTypes;
   name: string;
   configEntries: { name: string; value: string }[];
 }
 
 type ValueOf<T> = T[keyof T];
 
-export interface AdminEvents {
+export type AdminEvents = {
   CONNECT: 'admin.connect';
   DISCONNECT: 'admin.disconnect';
   REQUEST: 'admin.network.request';
   REQUEST_TIMEOUT: 'admin.network.request_timeout';
   REQUEST_QUEUE_SIZE: 'admin.network.request_queue_size';
-}
+};
 
 export interface InstrumentationEvent<T> {
   id: string;
@@ -271,6 +353,8 @@ export interface InstrumentationEvent<T> {
   payload: T;
 }
 
+export type RemoveInstrumentationEventListener<T> = () => void;
+
 export type ConnectEvent = InstrumentationEvent<null>;
 export type DisconnectEvent = InstrumentationEvent<null>;
 export type RequestEvent = InstrumentationEvent<{
@@ -308,9 +392,69 @@ export interface SeekEntry {
   offset: string;
 }
 
-export interface Admin {
+export interface Acl {
+  principal: string;
+  host: string;
+  operation: AclOperationTypes;
+  permissionType: AclPermissionTypes;
+}
+
+export interface AclResource {
+  resourceType: AclResourceTypes;
+  resourceName: string;
+  resourcePatternType: ResourcePatternTypes;
+}
+
+export type AclEntry = Acl & AclResource;
+
+export type DescribeAclResource = AclResource & {
+  acl: Acl[];
+};
+
+export interface DescribeAclResponse {
+  throttleTime: number;
+  errorCode: number;
+  errorMessage?: string;
+  resources: DescribeAclResource[];
+}
+
+export interface AclFilter {
+  resourceType: AclResourceTypes;
+  resourceName?: string;
+  resourcePatternType: ResourcePatternTypes;
+  principal?: string;
+  host?: string;
+  operation: AclOperationTypes;
+  permissionType: AclPermissionTypes;
+}
+
+export interface MatchingAcl {
+  errorCode: number;
+  errorMessage?: string;
+  resourceType: AclResourceTypes;
+  resourceName: string;
+  resourcePatternType: ResourcePatternTypes;
+  principal: string;
+  host: string;
+  operation: AclOperationTypes;
+  permissionType: AclPermissionTypes;
+}
+
+export interface DeleteAclFilterResponses {
+  errorCode: number;
+  errorMessage?: string;
+  matchingAcls: MatchingAcl[];
+}
+
+export interface DeleteAclResponse {
+  throttleTime: number;
+  filterResponses: DeleteAclFilterResponses[];
+}
+
+export type Admin = {
   connect(): Promise<void>;
   disconnect(): Promise<void>;
+  listTopics(): Promise<string[]>;
   createTopics(options: {
     validateOnly?: boolean;
     waitForLeaders?: boolean;
@@ -318,20 +462,31 @@ export interface Admin {
     topics: ITopicConfig[];
   }): Promise<boolean>;
   deleteTopics(options: { topics: string[]; timeout?: number }): Promise<void>;
-  fetchTopicMetadata(options: {
+  createPartitions(options: {
+    validateOnly?: boolean;
+    timeout?: number;
+    topicPartitions: ITopicPartitionConfig[];
+  }): Promise<boolean>;
+  fetchTopicMetadata(options?: {
     topics: string[];
   }): Promise<{ topics: Array<ITopicMetadata> }>;
   fetchOffsets(options: {
     groupId: string;
     topic: string;
-  }): Promise<
-    Array<{ partition: number; offset: string; metadata: string | null }>
-  >;
+    resolveOffsets?: boolean;
+  }): Promise<Array<SeekEntry & { metadata: string | null }>>;
   fetchTopicOffsets(
     topic: string,
-  ): Promise<
-    Array<{ partition: number; offset: string; high: string; low: string }>
-  >;
+  ): Promise<Array<SeekEntry & { high: string; low: string }>>;
+  fetchTopicOffsetsByTimestamp(
+    topic: string,
+    timestamp?: number,
+  ): Promise<Array<SeekEntry>>;
+  describeCluster(): Promise<{
+    brokers: Array<{ nodeId: number; host: string; port: number }>;
+    controller: number | null;
+    clusterId: string;
+  }>;
   setOffsets(options: {
     groupId: string;
     topic: string;
@@ -350,29 +505,42 @@ export interface Admin {
     validateOnly: boolean;
     resources: IResourceConfig[];
   }): Promise<any>;
+  listGroups(): Promise<{ groups: GroupOverview[] }>;
+  deleteGroups(groupIds: string[]): Promise<DeleteGroupsResult[]>;
+  describeGroups(groupIds: string[]): Promise<GroupDescriptions>;
+  describeAcls(options: AclFilter): Promise<DescribeAclResponse>;
+  deleteAcls(options: { filters: AclFilter[] }): Promise<DeleteAclResponse>;
+  createAcls(options: { acl: AclEntry[] }): Promise<boolean>;
+  deleteTopicRecords(options: {
+    topic: string;
+    partitions: SeekEntry[];
+  }): Promise<void>;
   logger(): Logger;
-  on(eventName: ValueOf<AdminEvents>, listener: (...args: any[]) => void): void;
+  on(
+    eventName: ValueOf<AdminEvents>,
+    listener: (...args: any[]) => void,
+  ): RemoveInstrumentationEventListener<typeof eventName>;
   events: AdminEvents;
-}
+};
 
 export let PartitionAssigners: { roundRobin: PartitionAssigner };
 
 export interface ISerializer<T> {
   encode(value: T): Buffer;
-  decode(buffer: Buffer): T;
+  decode(buffer: Buffer): T | null;
 }
 
-export interface MemberMetadata {
+export type MemberMetadata = {
   version: number;
   topics: string[];
   userData: Buffer;
-}
+};
 
-export interface MemberAssignment {
+export type MemberAssignment = {
   version: number;
   assignment: Assignment;
   userData: Buffer;
-}
+};
 
 export let AssignerProtocol: {
   MemberMetadata: ISerializer<MemberMetadata>;
@@ -400,11 +568,16 @@ export interface LoggerEntryContent {
   [key: string]: any;
 }
 
-export type Logger = (entry: LogEntry) => void;
+export type logCreator = (logLevel: logLevel) => (entry: LogEntry) => void;
 
-export type logCreator = (logLevel: string) => (entry: LogEntry) => void;
+export type Logger = {
+  info: (message: string, extra?: object) => void;
+  error: (message: string, extra?: object) => void;
+  warn: (message: string, extra?: object) => void;
+  debug: (message: string, extra?: object) => void;
+};
 
-export interface Broker {
+export type Broker = {
   isConnected(): boolean;
   connect(): Promise<void>;
   disconnect(): Promise<void>;
@@ -414,7 +587,12 @@ export interface Broker {
   metadata(
     topics: string[],
   ): Promise<{
-    brokers: Array<{ nodeId: number; host: string; port: number }>;
+    brokers: Array<{
+      nodeId: number;
+      host: string;
+      port: number;
+      rack?: string;
+    }>;
     topicMetadata: Array<{
       topicErrorCode: number;
       topic: number;
@@ -431,17 +609,33 @@ export interface Broker {
       partitions: Array<{ partition: number; offset: string }>;
     }>;
   }): Promise<any>;
-}
+  fetch(request: {
+    replicaId?: number;
+    isolationLevel?: number;
+    maxWaitTime?: number;
+    minBytes?: number;
+    maxBytes?: number;
+    topics: Array<{
+      topic: string;
+      partitions: Array<{
+        partition: number;
+        fetchOffset: string;
+        maxBytes: number;
+      }>;
+    }>;
+    rackId?: string;
+  }): Promise<any>;
+};
 
-export interface KafkaMessage {
+export type KafkaMessage = {
   key: Buffer;
-  value: Buffer;
+  value: Buffer | null;
   timestamp: string;
   size: number;
   attributes: number;
   offset: string;
   headers?: IHeaders;
-}
+};
 
 export interface ProducerRecord {
   topic: string;
@@ -451,13 +645,16 @@ export interface ProducerRecord {
   compression?: CompressionTypes;
 }
 
-export interface RecordMetadata {
+export type RecordMetadata = {
   topicName: string;
   partition: number;
   errorCode: number;
-  offset: string;
-  timestamp: string;
-}
+  offset?: string;
+  timestamp?: string;
+  baseOffset?: string;
+  logAppendTime?: string;
+  logStartOffset?: string;
+};
 
 export interface TopicMessages {
   topic: string;
@@ -465,10 +662,10 @@ export interface TopicMessages {
 }
 
 export interface ProducerBatch {
-  acks: number;
-  timeout: number;
-  compression: CompressionTypes;
-  topicMessages: TopicMessages[];
+  acks?: number;
+  timeout?: number;
+  compression?: CompressionTypes;
+  topicMessages?: TopicMessages[];
 }
 
 export interface PartitionOffset {
@@ -485,18 +682,18 @@ export interface Offsets {
   topics: TopicOffsets[];
 }
 
-interface Sender {
+type Sender = {
   send(record: ProducerRecord): Promise<RecordMetadata[]>;
   sendBatch(batch: ProducerBatch): Promise<RecordMetadata[]>;
-}
+};
 
-export interface ProducerEvents {
+export type ProducerEvents = {
   CONNECT: 'producer.connect';
   DISCONNECT: 'producer.disconnect';
   REQUEST: 'producer.network.request';
   REQUEST_TIMEOUT: 'producer.network.request_timeout';
   REQUEST_QUEUE_SIZE: 'producer.network.request_queue_size';
-}
+};
 
 export type Producer = Sender & {
   connect(): Promise<void>;
@@ -506,7 +703,7 @@ export type Producer = Sender & {
   on(
     eventName: ValueOf<ProducerEvents>,
     listener: (...args: any[]) => void,
-  ): void;
+  ): RemoveInstrumentationEventListener<typeof eventName>;
   transaction(): Promise<Transaction>;
   logger(): Logger;
 };
@@ -518,41 +715,54 @@ export type Transaction = Sender & {
   isActive(): boolean;
 };
 
-export interface ConsumerGroup {
+export type ConsumerGroup = {
   groupId: string;
   generationId: number;
   memberId: string;
   coordinator: Broker;
-}
+};
 
-export interface MemberDescription {
+export type MemberDescription = {
   clientHost: string;
   clientId: string;
   memberId: string;
   memberAssignment: Buffer;
   memberMetadata: Buffer;
-}
+};
 
-export interface GroupDescription {
+// See https://github.com/apache/kafka/blob/2.4.0/clients/src/main/java/org/apache/kafka/common/ConsumerGroupState.java#L25
+export type ConsumerGroupState =
+  | 'Unknown'
+  | 'PreparingRebalance'
+  | 'CompletingRebalance'
+  | 'Stable'
+  | 'Dead'
+  | 'Empty';
+
+export type GroupDescription = {
   groupId: string;
   members: MemberDescription[];
   protocol: string;
   protocolType: string;
-  state: string;
-}
+  state: ConsumerGroupState;
+};
 
-export interface TopicPartitions {
-  topic: string;
-  partitions: number[];
-}
-export interface TopicPartitionOffsetAndMedata {
+export type GroupDescriptions = {
+  groups: GroupDescription[];
+};
+
+export type TopicPartitions = { topic: string; partitions: number[] };
+export type TopicPartitionOffsetAndMetadata = {
   topic: string;
   partition: number;
   offset: string;
   metadata?: string | null;
-}
+};
 
-export interface Batch {
+// TODO: Remove with 2.x
+export type TopicPartitionOffsetAndMedata = TopicPartitionOffsetAndMetadata;
+
+export type Batch = {
   topic: string;
   partition: number;
   highWatermark: string;
@@ -562,12 +772,24 @@ export interface Batch {
   lastOffset(): string;
   offsetLag(): string;
   offsetLagLow(): string;
-}
+};
 
-export interface ConsumerEvents {
+export type GroupOverview = {
+  groupId: string;
+  protocolType: string;
+};
+
+export type DeleteGroupsResult = {
+  groupId: string;
+  errorCode?: number;
+  error?: KafkaJSProtocolError;
+};
+
+export type ConsumerEvents = {
   HEARTBEAT: 'consumer.heartbeat';
   COMMIT_OFFSETS: 'consumer.commit_offsets';
   GROUP_JOIN: 'consumer.group_join';
+  FETCH_START: 'consumer.fetch_start';
   FETCH: 'consumer.fetch';
   START_BATCH_PROCESS: 'consumer.start_batch_process';
   END_BATCH_PROCESS: 'consumer.end_batch_process';
@@ -575,10 +797,11 @@ export interface ConsumerEvents {
   DISCONNECT: 'consumer.disconnect';
   STOP: 'consumer.stop';
   CRASH: 'consumer.crash';
+  RECEIVED_UNSUBSCRIBED_TOPICS: 'consumer.received_unsubscribed_topics';
   REQUEST: 'consumer.network.request';
   REQUEST_TIMEOUT: 'consumer.network.request_timeout';
   REQUEST_QUEUE_SIZE: 'consumer.network.request_queue_size';
-}
+};
 export type ConsumerHeartbeatEvent = InstrumentationEvent<{
   groupId: string;
   memberId: string;
@@ -622,15 +845,22 @@ interface IBatchProcessEvent {
   firstOffset: string;
   lastOffset: string;
 }
-export type ConsumerStartBatchProcessEvent = InstrumentationEvent<
-  IBatchProcessEvent
->;
+export type ConsumerStartBatchProcessEvent = InstrumentationEvent<IBatchProcessEvent>;
 export type ConsumerEndBatchProcessEvent = InstrumentationEvent<
   IBatchProcessEvent & { duration: number }
 >;
 export type ConsumerCrashEvent = InstrumentationEvent<{
   error: Error;
   groupId: string;
+  restart: boolean;
+}>;
+export type ConsumerReceivedUnsubcribedTopicsEvent = InstrumentationEvent<{
+  groupId: string;
+  generationId: number;
+  memberId: string;
+  assignedTopics: string[];
+  topicsSubscribed: string[];
+  topicsNotSubscribed: string[];
 }>;
 
 export interface OffsetsByTopicPartition {
@@ -648,7 +878,7 @@ export interface EachBatchPayload {
   resolveOffset(offset: string): void;
   heartbeat(): Promise<void>;
   commitOffsetsIfNecessary(offsets?: Offsets): Promise<void>;
-  uncommittedOffsets(): Promise<OffsetsByTopicPartition>;
+  uncommittedOffsets(): OffsetsByTopicPartition;
   isRunning(): boolean;
   isStale(): boolean;
 }
@@ -665,25 +895,29 @@ export type ConsumerEachMessagePayload = EachMessagePayload;
  */
 export type ConsumerEachBatchPayload = EachBatchPayload;
 
-export interface Consumer {
+export type ConsumerRunConfig = {
+  autoCommit?: boolean;
+  autoCommitInterval?: number | null;
+  autoCommitThreshold?: number | null;
+  eachBatchAutoResolve?: boolean;
+  partitionsConsumedConcurrently?: number;
+  eachBatch?: (payload: EachBatchPayload) => Promise<void>;
+  eachMessage?: (payload: EachMessagePayload) => Promise<void>;
+};
+
+export type ConsumerSubscribeTopic = {
+  topic: string | RegExp;
+  fromBeginning?: boolean;
+};
+
+export type Consumer = {
   connect(): Promise<void>;
   disconnect(): Promise<void>;
-  subscribe(topic: {
-    topic: string | RegExp;
-    fromBeginning?: boolean;
-  }): Promise<void>;
+  subscribe(topic: ConsumerSubscribeTopic): Promise<void>;
   stop(): Promise<void>;
-  run(config?: {
-    autoCommit?: boolean;
-    autoCommitInterval?: number | null;
-    autoCommitThreshold?: number | null;
-    eachBatchAutoResolve?: boolean;
-    partitionsConsumedConcurrently?: number;
-    eachBatch?: (payload: EachBatchPayload) => Promise<void>;
-    eachMessage?: (payload: EachMessagePayload) => Promise<void>;
-  }): Promise<void>;
+  run(config?: ConsumerRunConfig): Promise<void>;
   commitOffsets(
-    topicPartitions: Array<TopicPartitionOffsetAndMedata>,
+    topicPartitions: Array<TopicPartitionOffsetAndMetadata>,
   ): Promise<void>;
   seek(topicPartition: {
     topic: string;
@@ -692,14 +926,15 @@ export interface Consumer {
   }): void;
   describeGroup(): Promise<GroupDescription>;
   pause(topics: Array<{ topic: string; partitions?: number[] }>): void;
+  paused(): TopicPartitions[];
   resume(topics: Array<{ topic: string; partitions?: number[] }>): void;
   on(
     eventName: ValueOf<ConsumerEvents>,
     listener: (...args: any[]) => void,
-  ): void;
+  ): RemoveInstrumentationEventListener<typeof eventName>;
   logger(): Logger;
   events: ConsumerEvents;
-}
+};
 
 export enum CompressionTypes {
   None = 0,
@@ -715,3 +950,186 @@ export let CompressionCodecs: {
   [CompressionTypes.LZ4]: () => any;
   [CompressionTypes.ZSTD]: () => any;
 };
+
+export declare class KafkaJSError extends Error {
+  readonly message: Error['message'];
+  readonly name: string;
+  readonly retriable: boolean;
+  readonly helpUrl?: string;
+
+  constructor(e: Error | string, metadata?: KafkaJSErrorMetadata);
+}
+
+export declare class KafkaJSNonRetriableError extends KafkaJSError {
+  constructor(e: Error | string);
+}
+
+export declare class KafkaJSProtocolError extends KafkaJSError {
+  readonly code: number;
+  readonly type: string;
+  constructor(e: Error | string);
+}
+
+export declare class KafkaJSOffsetOutOfRange extends KafkaJSProtocolError {
+  readonly topic: string;
+  readonly partition: number;
+  constructor(e: Error | string, metadata?: KafkaJSOffsetOutOfRangeMetadata);
+}
+
+export declare class KafkaJSNumberOfRetriesExceeded extends KafkaJSNonRetriableError {
+  readonly stack: string;
+  readonly originalError: Error;
+  readonly retryCount: number;
+  readonly retryTime: number;
+  constructor(
+    e: Error | string,
+    metadata?: KafkaJSNumberOfRetriesExceededMetadata,
+  );
+}
+
+export declare class KafkaJSConnectionError extends KafkaJSError {
+  readonly broker: string;
+  constructor(e: Error | string, metadata?: KafkaJSConnectionErrorMetadata);
+}
+
+export declare class KafkaJSRequestTimeoutError extends KafkaJSError {
+  readonly broker: string;
+  readonly correlationId: number;
+  readonly createdAt: number;
+  readonly sentAt: number;
+  readonly pendingDuration: number;
+  constructor(e: Error | string, metadata?: KafkaJSRequestTimeoutErrorMetadata);
+}
+
+export declare class KafkaJSMetadataNotLoaded extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSTopicMetadataNotLoaded extends KafkaJSMetadataNotLoaded {
+  readonly topic: string;
+  constructor(
+    e: Error | string,
+    metadata?: KafkaJSTopicMetadataNotLoadedMetadata,
+  );
+}
+
+export declare class KafkaJSStaleTopicMetadataAssignment extends KafkaJSError {
+  readonly topic: string;
+  readonly unknownPartitions: number;
+  constructor(
+    e: Error | string,
+    metadata?: KafkaJSStaleTopicMetadataAssignmentMetadata,
+  );
+}
+
+export declare class KafkaJSServerDoesNotSupportApiKey extends KafkaJSNonRetriableError {
+  readonly apiKey: number;
+  readonly apiName: string;
+  constructor(
+    e: Error | string,
+    metadata?: KafkaJSServerDoesNotSupportApiKeyMetadata,
+  );
+}
+
+export declare class KafkaJSBrokerNotFound extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSPartialMessageError extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSSASLAuthenticationError extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSGroupCoordinatorNotFound extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSNotImplemented extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSTimeout extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSLockTimeout extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSUnsupportedMagicByteInMessageSet extends KafkaJSError {
+  constructor();
+}
+
+export declare class KafkaJSDeleteGroupsError extends KafkaJSError {
+  readonly groups: DeleteGroupsResult[];
+  constructor(e: Error | string, groups?: KafkaJSDeleteGroupsErrorGroups[]);
+}
+
+export declare class KafkaJSDeleteTopicRecordsError extends KafkaJSError {
+  constructor(metadata: KafkaJSDeleteTopicRecordsErrorTopic);
+}
+
+export interface KafkaJSDeleteGroupsErrorGroups {
+  groupId: string;
+  errorCode: number;
+  error: KafkaJSError;
+}
+
+export interface KafkaJSDeleteTopicRecordsErrorTopic {
+  topic: string;
+  partitions: KafkaJSDeleteTopicRecordsErrorPartition[];
+}
+
+export interface KafkaJSDeleteTopicRecordsErrorPartition {
+  partition: number;
+  offset: string;
+  error: KafkaJSError;
+}
+
+export interface KafkaJSErrorMetadata {
+  retriable?: boolean;
+  topic?: string;
+  partitionId?: number;
+  metadata?: PartitionMetadata;
+}
+
+export interface KafkaJSOffsetOutOfRangeMetadata {
+  topic: string;
+  partition: number;
+}
+
+export interface KafkaJSNumberOfRetriesExceededMetadata {
+  retryCount: number;
+  retryTime: number;
+}
+
+export interface KafkaJSConnectionErrorMetadata {
+  broker?: string;
+  code?: string;
+}
+
+export interface KafkaJSRequestTimeoutErrorMetadata {
+  broker: string;
+  clientId: string;
+  correlationId: number;
+  createdAt: number;
+  sentAt: number;
+  pendingDuration: number;
+}
+
+export interface KafkaJSTopicMetadataNotLoadedMetadata {
+  topic: string;
+}
+
+export interface KafkaJSStaleTopicMetadataAssignmentMetadata {
+  topic: string;
+  unknownPartitions: PartitionMetadata[];
+}
+
+export interface KafkaJSServerDoesNotSupportApiKeyMetadata {
+  apiKey: number;
+  apiName: string;
+}

packages/microservices/external/rmq-url.interface.ts

@@ -9,3 +9,22 @@ export interface RmqUrl {
   heartbeat?: number;
   vhost?: string;
 }
+
+export interface AmqpConnectionManagerSocketOptions {
+  reconnectTimeInSeconds?: number;
+  heartbeatIntervalInSeconds?: number;
+  findServers?: () => string | string[];
+  connectionOptions?: any;
+}
+
+export interface AmqplibQueueOptions {
+  durable?: boolean;
+  autoDelete?: boolean;
+  arguments?: any;
+  messageTtl?: number;
+  expires?: number;
+  deadLetterExchange?: string;
+  deadLetterRoutingKey?: string;
+  maxLength?: number;
+  maxPriority?: number;
+}

packages/microservices/helpers/index.ts

@@ -1,4 +1,4 @@
 export * from './json-socket';
 export * from './kafka-logger';
 export * from './kafka-parser';
-export * from './kafka-round-robin-partition-assigner';
+export * from './kafka-reply-partition-assigner';

packages/microservices/helpers/kafka-reply-partition-assigner.ts

@@ -0,0 +1,202 @@
+import { loadPackage } from '@nestjs/common/utils/load-package.util';
+import { isUndefined } from '@nestjs/common/utils/shared.utils';
+import { ClientKafka } from '../client/client-kafka';
+import {
+  Cluster,
+  GroupMember,
+  GroupMemberAssignment,
+  GroupState,
+  MemberMetadata,
+} from '../external/kafka.interface';
+
+let kafkaPackage: any = {};
+
+export class KafkaReplyPartitionAssigner {
+  readonly name = 'NestReplyPartitionAssigner';
+  readonly version = 1;
+
+  constructor(
+    private readonly clientKafka: ClientKafka,
+    private readonly config: {
+      cluster: Cluster;
+    },
+  ) {
+    kafkaPackage = loadPackage(
+      'kafkajs',
+      KafkaReplyPartitionAssigner.name,
+      () => require('kafkajs'),
+    );
+  }
+
+  /**
+   * This process can result in imbalanced assignments
+   * @param {array} members array of members, e.g: [{ memberId: 'test-5f93f5a3' }]
+   * @param {array} topics
+   * @param {Buffer} userData
+   * @returns {array} object partitions per topic per member
+   */
+  public async assign(group: {
+    members: GroupMember[];
+    topics: string[];
+  }): Promise<GroupMemberAssignment[]> {
+    const assignment = {};
+    const previousAssignment = {};
+
+    const membersCount = group.members.length;
+    const decodedMembers = group.members.map(member =>
+      this.decodeMember(member),
+    );
+    const sortedMemberIds = decodedMembers
+      .map(member => member.memberId)
+      .sort();
+
+    // build the previous assignment and an inverse map of topic > partition > memberId for lookup
+    decodedMembers.forEach(member => {
+      if (
+        !previousAssignment[member.memberId] &&
+        Object.keys(member.previousAssignment).length > 0
+      ) {
+        previousAssignment[member.memberId] = member.previousAssignment;
+      }
+    });
+
+    // build a collection of topics and partitions
+    const topicsPartitions = group.topics
+      .map(topic => {
+        const partitionMetadata = this.config.cluster.findTopicPartitionMetadata(
+          topic,
+        );
+        return partitionMetadata.map(m => {
+          return {
+            topic,
+            partitionId: m.partitionId,
+          };
+        });
+      })
+      .reduce((acc, val) => acc.concat(val), []);
+
+    // create the new assignment by populating the members with the first partition of the topics
+    sortedMemberIds.forEach(assignee => {
+      if (!assignment[assignee]) {
+        assignment[assignee] = {};
+      }
+
+      // add topics to each member
+      group.topics.forEach(topic => {
+        if (!assignment[assignee][topic]) {
+          assignment[assignee][topic] = [];
+        }
+
+        // see if the topic and partition belong to a previous assignment
+        if (
+          previousAssignment[assignee] &&
+          !isUndefined(previousAssignment[assignee][topic])
+        ) {
+          // take the minimum partition since replies will be sent to the minimum partition
+          const firstPartition = previousAssignment[assignee][topic];
+
+          // create the assignment with the first partition
+          assignment[assignee][topic].push(firstPartition);
+
+          // find and remove this topic and partition from the topicPartitions to be assigned later
+          const topicsPartitionsIndex = topicsPartitions.findIndex(
+            topicPartition => {
+              return (
+                topicPartition.topic === topic &&
+                topicPartition.partitionId === firstPartition
+              );
+            },
+          );
+
+          // only continue if we found a partition matching this topic
+          if (topicsPartitionsIndex !== -1) {
+            // remove inline
+            topicsPartitions.splice(topicsPartitionsIndex, 1);
+          }
+        }
+      });
+    });
+
+    // check for member topics that have a partition length of 0
+    sortedMemberIds.forEach(assignee => {
+      group.topics.forEach(topic => {
+        // only continue if there are no partitions for assignee's topic
+        if (assignment[assignee][topic].length === 0) {
+          // find the first partition for this topic
+          const topicsPartitionsIndex = topicsPartitions.findIndex(
+            topicPartition => {
+              return topicPartition.topic === topic;
+            },
+          );
+
+          if (topicsPartitionsIndex !== -1) {
+            // find and set the topic partition
+            const partition =
+              topicsPartitions[topicsPartitionsIndex].partitionId;
+
+            assignment[assignee][topic].push(partition);
+
+            // remove this partition from the topics partitions collection
+            topicsPartitions.splice(topicsPartitionsIndex, 1);
+          }
+        }
+      });
+    });
+
+    // then balance out the rest of the topic partitions across the members
+    const insertAssignmentsByTopic = (topicPartition, i) => {
+      const assignee = sortedMemberIds[i % membersCount];
+
+      assignment[assignee][topicPartition.topic].push(
+        topicPartition.partitionId,
+      );
+    };
+
+    // build the assignments
+    topicsPartitions.forEach(insertAssignmentsByTopic);
+
+    // encode the end result
+    return Object.keys(assignment).map(memberId => ({
+      memberId,
+      memberAssignment: kafkaPackage.AssignerProtocol.MemberAssignment.encode({
+        version: this.version,
+        assignment: assignment[memberId],
+      }),
+    }));
+  }
+
+  public protocol(subscription: {
+    topics: string[];
+    userData: Buffer;
+  }): GroupState {
+    const stringifiedUserData = JSON.stringify({
+      previousAssignment: this.getPreviousAssignment(),
+    });
+    subscription.userData = Buffer.from(stringifiedUserData);
+
+    return {
+      name: this.name,
+      metadata: kafkaPackage.AssignerProtocol.MemberMetadata.encode({
+        version: this.version,
+        topics: subscription.topics,
+        userData: subscription.userData,
+      }),
+    };
+  }
+
+  public getPreviousAssignment() {
+    return this.clientKafka.getConsumerAssignments();
+  }
+
+  public decodeMember(member: GroupMember) {
+    const memberMetadata = kafkaPackage.AssignerProtocol.MemberMetadata.decode(
+      member.memberMetadata,
+    ) as MemberMetadata;
+    const memberUserData = JSON.parse(memberMetadata.userData.toString());
+
+    return {
+      memberId: member.memberId,
+      previousAssignment: memberUserData.previousAssignment,
+    };
+  }
+}

packages/microservices/helpers/kafka-round-robin-partition-assigner.ts

@@ -1,119 +0,0 @@
-import { loadPackage } from '@nestjs/common/utils/load-package.util';
-import {
-  Cluster,
-  GroupMember,
-  GroupMemberAssignment,
-  GroupState,
-  MemberMetadata,
-} from '../external/kafka.interface';
-
-let kafkaPackage: any = {};
-
-const time = process.hrtime();
-
-export class KafkaRoundRobinPartitionAssigner {
-  readonly name = 'RoundRobinByTime';
-  readonly version = 1;
-
-  constructor(private readonly config: { cluster: Cluster }) {
-    kafkaPackage = loadPackage(
-      'kafkajs',
-      KafkaRoundRobinPartitionAssigner.name,
-      () => require('kafkajs'),
-    );
-  }
-
-  /**
-   * This process can result in imbalanced assignments
-   * @param {array} members array of members, e.g: [{ memberId: 'test-5f93f5a3' }]
-   * @param {array} topics
-   * @param {Buffer} userData
-   * @returns {array} object partitions per topic per member
-   */
-  public async assign(group: {
-    members: GroupMember[];
-    topics: string[];
-    userData: Buffer;
-  }): Promise<GroupMemberAssignment[]> {
-    const membersCount = group.members.length;
-    const assignment = {};
-
-    const sortedMembers = group.members
-      .map(member => this.mapToTimeAndMemberId(member))
-      .sort((a, b) => this.sortByTime(a, b))
-      .map(member => member.memberId);
-
-    sortedMembers.forEach(memberId => {
-      assignment[memberId] = {};
-    });
-
-    const insertAssignmentsByTopic = (topic: string) => {
-      const partitionMetadata = this.config.cluster.findTopicPartitionMetadata(
-        topic,
-      );
-      const partitions = partitionMetadata.map(m => m.partitionId);
-      sortedMembers.forEach((memberId, i) => {
-        if (!assignment[memberId][topic]) {
-          assignment[memberId][topic] = [];
-        }
-
-        assignment[memberId][topic].push(
-          ...partitions.filter(id => id % membersCount === i),
-        );
-      });
-    };
-    group.topics.forEach(insertAssignmentsByTopic);
-
-    return Object.keys(assignment).map(memberId => ({
-      memberId,
-      memberAssignment: kafkaPackage.AssignerProtocol.MemberAssignment.encode({
-        version: this.version,
-        assignment: assignment[memberId],
-        userData: group.userData,
-      }),
-    }));
-  }
-
-  public protocol(subscription: {
-    topics: string[];
-    userData: Buffer;
-  }): GroupState {
-    const stringifiedTimeObject = JSON.stringify({
-      time: this.getTime(),
-    });
-    subscription.userData = Buffer.from(stringifiedTimeObject);
-    return {
-      name: this.name,
-      metadata: kafkaPackage.AssignerProtocol.MemberMetadata.encode({
-        version: this.version,
-        topics: subscription.topics,
-        userData: subscription.userData,
-      }),
-    };
-  }
-
-  public getTime(): [number, number] {
-    return time;
-  }
-
-  public mapToTimeAndMemberId(member: GroupMember) {
-    const memberMetadata = kafkaPackage.AssignerProtocol.MemberMetadata.decode(
-      member.memberMetadata,
-    ) as MemberMetadata;
-    const memberUserData = JSON.parse(memberMetadata.userData.toString());
-
-    return {
-      memberId: member.memberId,
-      time: memberUserData.time,
-    };
-  }
-
-  public sortByTime(a: Record<'time', number[]>, b: Record<'time', number[]>) {
-    // if seconds are equal sort by nanoseconds
-    if (a.time[0] === b.time[0]) {
-      return a.time[1] - b.time[1];
-    }
-    // sort by seconds
-    return a.time[0] - b.time[0];
-  }
-}

packages/microservices/interfaces/client-metadata.interface.ts

@@ -1,3 +1,5 @@
+import { Type } from '@nestjs/common';
+import { ClientProxy } from '../client';
 import { Transport } from '../enums/transport.enum';
 import { Deserializer } from './deserializer.interface';
 import {
@@ -19,6 +21,11 @@ export type ClientOptions =
   | TcpClientOptions
   | RmqOptions;
 
+export interface CustomClientOptions {
+  customClass: Type<ClientProxy>;
+  options?: Record<string, any>;
+}
+
 export interface TcpClientOptions {
   transport: Transport.TCP;
   options?: {

packages/microservices/interfaces/microservice-configuration.interface.ts

@@ -1,18 +1,20 @@
 import { Transport } from '../enums/transport.enum';
 import { ChannelOptions } from '../external/grpc-options.interface';
 import {
-  CompressionTypes,
   ConsumerConfig,
+  ConsumerRunConfig,
+  ConsumerSubscribeTopic,
   KafkaConfig,
   ProducerConfig,
-} from '../external/kafka-options.interface';
+  ProducerRecord,
+} from '../external/kafka.interface';
 import { MqttClientOptions } from '../external/mqtt-options.interface';
 import { ClientOpts } from '../external/redis.interface';
+import { RmqUrl } from '../external/rmq-url.interface';
 import { Server } from '../server/server';
 import { CustomTransportStrategy } from './custom-transport-strategy.interface';
 import { Deserializer } from './deserializer.interface';
 import { Serializer } from './serializer.interface';
-import { RmqUrl } from '../external/rmq-url.interface';
 
 export type MicroserviceOptions =
   | GrpcOptions
@@ -25,7 +27,7 @@ export type MicroserviceOptions =
   | CustomStrategy;
 
 export interface CustomStrategy {
-  strategy: Server & CustomTransportStrategy;
+  strategy: CustomTransportStrategy;
   options?: {};
 }
 
@@ -101,13 +103,19 @@ export interface MqttOptions {
 export interface NatsOptions {
   transport?: Transport.NATS;
   options?: {
+    encoding?: string;
     url?: string;
     name?: string;
     user?: string;
     pass?: string;
+    maxPingOut?: number;
     maxReconnectAttempts?: number;
     reconnectTimeWait?: number;
+    reconnectJitter?: number;
+    reconnectJitterTLS?: number;
+    reconnectDelayHandler?: any;
     servers?: string[];
+    nkey?: any;
     reconnect?: boolean;
     pedantic?: boolean;
     tls?: any;
@@ -117,6 +125,18 @@ export interface NatsOptions {
     userJWT?: string;
     nonceSigner?: any;
     userCreds?: any;
+    useOldRequestStyle?: boolean;
+    pingInterval?: number;
+    preserveBuffers?: boolean;
+    waitOnFirstConnect?: boolean;
+    verbose?: boolean;
+    noEcho?: boolean;
+    noRandomize?: boolean;
+    timeout?: number;
+    token?: string;
+    yieldTime?: number;
+    tokenHandler?: any;
+    [key: string]: any;
   };
 }
 
@@ -127,8 +147,8 @@ export interface RmqOptions {
     queue?: string;
     prefetchCount?: number;
     isGlobalPrefetchCount?: boolean;
-    queueOptions?: any;
-    socketOptions?: any;
+    queueOptions?: any; // AmqplibQueueOptions;
+    socketOptions?: any; // AmqpConnectionManagerSocketOptions;
     noAck?: boolean;
     serializer?: Serializer;
     deserializer?: Deserializer;
@@ -140,24 +160,13 @@ export interface RmqOptions {
 export interface KafkaOptions {
   transport?: Transport.KAFKA;
   options?: {
+    postfixId?: string;
     client?: KafkaConfig;
     consumer?: ConsumerConfig;
-    run?: {
-      autoCommit?: boolean;
-      autoCommitInterval?: number | null;
-      autoCommitThreshold?: number | null;
-      eachBatchAutoResolve?: boolean;
-      partitionsConsumedConcurrently?: number;
-    };
-    subscribe?: {
-      fromBeginning?: boolean;
-    };
+    run?: Omit<ConsumerRunConfig, 'eachBatch' | 'eachMessage'>;
+    subscribe?: Omit<ConsumerSubscribeTopic, 'topic'>;
     producer?: ProducerConfig;
-    send?: {
-      acks?: number;
-      timeout?: number;
-      compression?: CompressionTypes;
-    };
+    send?: Omit<ProducerRecord, 'topic' | 'messages'>;
     serializer?: Serializer;
     deserializer?: Deserializer;
   };

packages/microservices/module/interfaces/clients-module.interface.ts

@@ -1,21 +1,23 @@
-import { ClientOptions } from '../../interfaces';
+import { ClientOptions, CustomClientOptions } from '../../interfaces';
 import { Type, Provider, ModuleMetadata } from '@nestjs/common/interfaces';
 
-export type ClientProviderOptions = ClientOptions & {
+export type ClientProvider = ClientOptions | CustomClientOptions;
+
+export type ClientProviderOptions = ClientProvider & {
   name: string | symbol;
 };
 
 export type ClientsModuleOptions = Array<ClientProviderOptions>;
 
 export interface ClientsModuleOptionsFactory {
-  createClientOptions(): Promise<ClientOptions> | ClientOptions;
+  createClientOptions(): Promise<ClientProvider> | ClientProvider;
 }
 
 export interface ClientsProviderAsyncOptions
   extends Pick<ModuleMetadata, 'imports'> {
   useExisting?: Type<ClientsModuleOptionsFactory>;
   useClass?: Type<ClientsModuleOptionsFactory>;
-  useFactory?: (...args: any[]) => Promise<ClientOptions> | ClientOptions;
+  useFactory?: (...args: any[]) => Promise<ClientProvider> | ClientProvider;
   inject?: any[];
   extraProviders?: Provider[];
   name: string | symbol;

packages/microservices/nest-microservice.ts

@@ -123,7 +123,7 @@ export class NestMicroservice
     !this.isInitialized && (await this.registerModules());
 
     this.logger.log(MESSAGES.MICROSERVICE_READY);
-    return new Promise(resolve => this.server.listen(resolve));
+    return new Promise<void>(resolve => this.server.listen(resolve));
   }
 
   public async close(): Promise<any> {

packages/microservices/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@nestjs/microservices",
-  "version": "7.5.5",
+  "version": "7.6.10",
   "description": "Nest - modern, fast, powerful node.js web framework (@microservices)",
   "author": "Kamil Mysliwiec",
   "license": "MIT",
@@ -19,15 +19,54 @@
   "dependencies": {
     "iterare": "1.2.1",
     "json-socket": "0.3.0",
-    "tslib": "2.0.3"
+    "tslib": "2.1.0"
   },
   "devDependencies": {
-    "@nestjs/common": "7.5.5",
-    "@nestjs/core": "7.5.5"
+    "@nestjs/common": "7.6.10",
+    "@nestjs/core": "7.6.10"
   },
   "peerDependencies": {
     "@nestjs/common": "^7.0.0",
     "@nestjs/core": "^7.0.0",
+    "@nestjs/websockets": "^7.0.0",
+    "amqp-connection-manager": "*",
+    "amqplib": "*",
+    "cache-manager": "*",
+    "grpc": "*",
+    "kafkajs": "*",
+    "mqtt": "*",
+    "nats": "*",
+    "redis": "*",
+    "reflect-metadata": "^0.1.12",
     "rxjs": "^6.0.0"
+  },
+  "peerDependenciesMeta": {
+    "@nestjs/websockets": {
+      "optional": true
+    },
+    "cache-manager": {
+      "optional": true
+    },
+    "grpc": {
+      "optional": true
+    },
+    "kafkajs": {
+      "optional": true
+    },
+    "mqtt": {
+      "optional": true
+    },
+    "nats": {
+      "optional": true
+    },
+    "redis": {
+      "optional": true
+    },
+    "amqplib": {
+      "optional": true
+    },
+    "amqp-connection-manager": {
+      "optional": true
+    }
   }
 }

packages/microservices/server/server-kafka.ts

@@ -19,6 +19,7 @@ import {
   KafkaMessage,
   Message,
   Producer,
+  RecordMetadata,
 } from '../external/kafka.interface';
 import { KafkaLogger, KafkaParser } from '../helpers';
 import {
@@ -50,17 +51,16 @@ export class ServerKafka extends Server implements CustomTransportStrategy {
       this.getOptionsProp(this.options, 'client') || ({} as KafkaConfig);
     const consumerOptions =
       this.getOptionsProp(this.options, 'consumer') || ({} as ConsumerConfig);
+    const postfixId =
+      this.getOptionsProp(this.options, 'postfixId') || '-server';
 
     this.brokers = clientOptions.brokers || [KAFKA_DEFAULT_BROKER];
 
     // append a unique id to the clientId and groupId
     // so they don't collide with a microservices client
     this.clientId =
-      (clientOptions.clientId || KAFKA_DEFAULT_CLIENT) +
-      (clientOptions.clientIdPostfix || '-server');
-    this.groupId =
-      (consumerOptions.groupId || KAFKA_DEFAULT_GROUP) +
-      (clientOptions.clientIdPostfix || '-server');
+      (clientOptions.clientId || KAFKA_DEFAULT_CLIENT) + postfixId;
+    this.groupId = (consumerOptions.groupId || KAFKA_DEFAULT_GROUP) + postfixId;
 
     kafkaPackage = this.loadPackage('kafkajs', ServerKafka.name, () =>
       require('kafkajs'),
@@ -75,9 +75,9 @@ export class ServerKafka extends Server implements CustomTransportStrategy {
     await this.start(callback);
   }
 
-  public close(): void {
-    this.consumer && this.consumer.disconnect();
-    this.producer && this.producer.disconnect();
+  public async close(): Promise<void> {
+    this.consumer && (await this.consumer.disconnect());
+    this.producer && (await this.producer.disconnect());
     this.consumer = null;
     this.producer = null;
     this.client = null;
@@ -130,7 +130,7 @@ export class ServerKafka extends Server implements CustomTransportStrategy {
     replyTopic: string,
     replyPartition: string,
     correlationId: string,
-  ): (data: any) => any {
+  ): (data: any) => Promise<RecordMetadata[]> {
     return (data: any) =>
       this.sendMessage(data, replyTopic, replyPartition, correlationId);
   }
@@ -184,7 +184,7 @@ export class ServerKafka extends Server implements CustomTransportStrategy {
     replyTopic: string,
     replyPartition: string,
     correlationId: string,
-  ): void {
+  ): Promise<RecordMetadata[]> {
     const outgoingMessage = this.serializer.serialize(message.response);
     this.assignReplyPartition(replyPartition, outgoingMessage);
     this.assignCorrelationIdHeader(correlationId, outgoingMessage);
@@ -198,7 +198,7 @@ export class ServerKafka extends Server implements CustomTransportStrategy {
       },
       this.options.send || {},
     );
-    this.producer.send(replyMessage);
+    return this.producer.send(replyMessage);
   }
 
   public assignIsDisposedHeader(

packages/microservices/server/server-rmq.ts

@@ -18,13 +18,13 @@ import {
 } from '../constants';
 import { RmqContext } from '../ctx-host';
 import { Transport } from '../enums';
+import { RmqUrl } from '../external/rmq-url.interface';
 import { CustomTransportStrategy, RmqOptions } from '../interfaces';
 import {
   IncomingRequest,
   OutgoingResponse,
 } from '../interfaces/packet.interface';
 import { Server } from './server';
-import { RmqUrl } from '../external/rmq-url.interface';
 
 let rqmPackage: any = {};
 

packages/microservices/server/server.ts

@@ -61,14 +61,16 @@ export abstract class Server {
 
   public send(
     stream$: Observable<any>,
-    respond: (data: WritePacket) => void,
+    respond: (data: WritePacket) => unknown | Promise<unknown>,
   ): Subscription {
     let dataBuffer: WritePacket[] = null;
     const scheduleOnNextTick = (data: WritePacket) => {
       if (!dataBuffer) {
         dataBuffer = [data];
-        process.nextTick(() => {
-          dataBuffer.forEach(buffer => respond(buffer));
+        process.nextTick(async () => {
+          for (const item of dataBuffer) {
+            await respond(item);
+          }
           dataBuffer = null;
         });
       } else if (!data.isDisposed) {

packages/microservices/test/client/client-kafka.spec.ts

@@ -3,7 +3,6 @@ import * as sinon from 'sinon';
 import { ClientKafka } from '../../client/client-kafka';
 import { NO_MESSAGE_HANDLER } from '../../constants';
 import { KafkaHeaders } from '../../enums';
-import { InvalidKafkaClientTopicPartitionException } from '../../errors/invalid-kafka-client-topic-partition.exception';
 import { InvalidKafkaClientTopicException } from '../../errors/invalid-kafka-client-topic.exception';
 import {
   ConsumerGroupJoinEvent,
@@ -269,6 +268,7 @@ describe('ClientKafka', () => {
 
       expect(createClientStub.calledOnce).to.be.true;
       expect(producerStub.calledOnce).to.be.true;
+
       expect(consumerStub.calledOnce).to.be.true;
 
       expect(on.calledOnce).to.be.true;
@@ -314,13 +314,19 @@ describe('ClientKafka', () => {
           memberId: 'member-1',
           memberAssignment: {
             'topic-a': [0, 1, 2],
+            'topic-b': [3, 4, 5],
           },
         },
       };
 
       client['setConsumerAssignments'](consumerAssignments);
+
       expect(client['consumerAssignments']).to.deep.eq(
-        consumerAssignments.payload.memberAssignment,
+        // consumerAssignments.payload.memberAssignment,
+        {
+          'topic-a': 0,
+          'topic-b': 3,
+        },
       );
     });
   });
@@ -493,10 +499,22 @@ describe('ClientKafka', () => {
     });
   });
 
+  describe('getConsumerAssignments', () => {
+    it('should get consumer assignments', () => {
+      client['consumerAssignments'] = {
+        [replyTopic]: 0,
+      };
+
+      const result = client.getConsumerAssignments();
+
+      expect(result).to.deep.eq(client['consumerAssignments']);
+    });
+  });
+
   describe('getReplyTopicPartition', () => {
     it('should get reply partition', () => {
       client['consumerAssignments'] = {
-        [replyTopic]: [0],
+        [replyTopic]: 0,
       };
 
       const result = client['getReplyTopicPartition'](replyTopic);
@@ -504,19 +522,17 @@ describe('ClientKafka', () => {
       expect(result).to.eq('0');
     });
 
-    it('should throw error when the topic is being consumed but is not assigned partitions', () => {
-      client['consumerAssignments'] = {
-        [replyTopic]: [],
-      };
+    it('should throw error when the topic is not being consumed', () => {
+      client['consumerAssignments'] = {};
 
       expect(() => client['getReplyTopicPartition'](replyTopic)).to.throw(
-        InvalidKafkaClientTopicPartitionException,
+        InvalidKafkaClientTopicException,
       );
     });
 
-    it('should throw error when the topic is not being consumer', () => {
+    it('should throw error when the topic is not being consumed', () => {
       client['consumerAssignments'] = {
-        [topic]: [],
+        [topic]: undefined,
       };
 
       expect(() => client['getReplyTopicPartition'](replyTopic)).to.throw(
@@ -551,7 +567,7 @@ describe('ClientKafka', () => {
         'getReplyTopicPartition',
       );
       routingMapSetSpy = sinon.spy((client as any).routingMap, 'set');
-      sendSpy = sinon.spy();
+      sendSpy = sinon.spy(() => Promise.resolve());
 
       // stub
       assignPacketIdStub = sinon
@@ -568,7 +584,7 @@ describe('ClientKafka', () => {
 
       // set
       client['consumerAssignments'] = {
-        [replyTopic]: [parseFloat(replyPartition)],
+        [replyTopic]: parseFloat(replyPartition),
       };
     });
 

packages/microservices/test/helpers/kafka-reply-partition-assigner.spec.ts

@@ -0,0 +1,286 @@
+import { expect } from 'chai';
+import * as sinon from 'sinon';
+import * as Kafka from 'kafkajs';
+import { KafkaReplyPartitionAssigner } from '../../helpers/kafka-reply-partition-assigner';
+import { ClientKafka } from '../../client/client-kafka';
+
+describe('kafka reply partition assigner', () => {
+  let cluster, topics, metadata, assigner, client;
+
+  let getConsumerAssignments: sinon.SinonSpy;
+  let getPreviousAssignment: sinon.SinonSpy;
+
+  beforeEach(() => {
+    metadata = {};
+    cluster = { findTopicPartitionMetadata: topic => metadata[topic] };
+    client = new ClientKafka({});
+    assigner = new KafkaReplyPartitionAssigner(client, { cluster });
+    topics = ['topic-A', 'topic-B'];
+
+    getConsumerAssignments = sinon.spy(client, 'getConsumerAssignments');
+    getPreviousAssignment = sinon.spy(assigner, 'getPreviousAssignment');
+
+    // reset previous assignments
+    (client as any).consumerAssignments = {};
+  });
+
+  describe('assign', () => {
+    it('assign all partitions evenly', async () => {
+      metadata['topic-A'] = Array(14)
+        .fill(1)
+        .map((_, i) => ({ partitionId: i }));
+
+      metadata['topic-B'] = Array(5)
+        .fill(1)
+        .map((_, i) => ({ partitionId: i }));
+
+      const members = [
+        {
+          memberId: 'member-3',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {},
+              }),
+            ),
+          }),
+        },
+        {
+          memberId: 'member-1',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {},
+              }),
+            ),
+          }),
+        },
+        {
+          memberId: 'member-4',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {},
+              }),
+            ),
+          }),
+        },
+        {
+          memberId: 'member-2',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {},
+              }),
+            ),
+          }),
+        },
+      ];
+
+      const assignment = await assigner.assign({ members, topics });
+
+      expect(assignment).to.deep.equal([
+        {
+          memberId: 'member-1',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [0, 4, 8, 12],
+              'topic-B': [0],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+        {
+          memberId: 'member-2',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [1, 5, 9, 13],
+              'topic-B': [1],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+        {
+          memberId: 'member-3',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [2, 6, 10],
+              'topic-B': [2, 4],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+        {
+          memberId: 'member-4',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [3, 7, 11],
+              'topic-B': [3],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+      ]);
+    });
+  });
+
+  describe('re-assign', () => {
+    it('assign all partitions evenly', async () => {
+      metadata['topic-A'] = Array(11)
+        .fill(1)
+        .map((_, i) => ({ partitionId: i }));
+
+      metadata['topic-B'] = Array(7)
+        .fill(1)
+        .map((_, i) => ({ partitionId: i }));
+
+      const members = [
+        {
+          memberId: 'member-3',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {
+                  'topic-A': 0,
+                  'topic-B': 0,
+                },
+              }),
+            ),
+          }),
+        },
+        {
+          memberId: 'member-1',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {
+                  'topic-A': 1,
+                  'topic-B': 1,
+                },
+              }),
+            ),
+          }),
+        },
+        {
+          memberId: 'member-4',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {
+                  'topic-A': 2,
+                },
+              }),
+            ),
+          }),
+        },
+        {
+          memberId: 'member-2',
+          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+            version: assigner.version,
+            topics: ['topic-A', 'topic-B'],
+            userData: Buffer.from(
+              JSON.stringify({
+                previousAssignment: {},
+              }),
+            ),
+          }),
+        },
+      ];
+
+      const assignment = await assigner.assign({ members, topics });
+
+      expect(assignment).to.deep.equal([
+        {
+          memberId: 'member-1',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [1, 4, 8],
+              'topic-B': [1, 5],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+        {
+          memberId: 'member-2',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [3, 5, 9],
+              'topic-B': [2, 6],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+        {
+          memberId: 'member-3',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [0, 6, 10],
+              'topic-B': [0],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+        {
+          memberId: 'member-4',
+          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
+            version: assigner.version,
+            assignment: {
+              'topic-A': [2, 7],
+              'topic-B': [3, 4],
+            },
+            userData: Buffer.alloc(0),
+          }),
+        },
+      ]);
+    });
+  });
+
+  describe('protocol', () => {
+    it('returns the assigner name and metadata', () => {
+      // set previous assignments
+      (client as any).consumerAssignments = {
+        'topic-A': 0,
+        'topic-B': 1,
+      };
+
+      const protocol = assigner.protocol({ topics });
+
+      expect(getPreviousAssignment.calledOnce).to.be.true;
+      expect(getConsumerAssignments.calledOnce).to.be.true;
+
+      expect(protocol).to.deep.equal({
+        name: assigner.name,
+        metadata: Kafka.AssignerProtocol.MemberMetadata.encode({
+          version: assigner.version,
+          topics,
+          userData: Buffer.from(
+            JSON.stringify({
+              previousAssignment: (client as any).consumerAssignments,
+            }),
+          ),
+        }),
+      });
+    });
+  });
+});

packages/microservices/test/helpers/kafka-round-robin-by-time-partition-assigner.spec.ts

@@ -1,143 +0,0 @@
-import { expect } from 'chai';
-import * as Kafka from 'kafkajs';
-import { KafkaRoundRobinPartitionAssigner } from '../../helpers/kafka-round-robin-partition-assigner';
-
-describe('kafka round robin by time', () => {
-  let cluster, topics, metadata, assigner;
-
-  beforeEach(() => {
-    metadata = {};
-    cluster = { findTopicPartitionMetadata: topic => metadata[topic] };
-    assigner = new KafkaRoundRobinPartitionAssigner({ cluster });
-    topics = ['topic-A', 'topic-B'];
-  });
-
-  describe('assign', () => {
-    it('assign all partitions evenly', async () => {
-      metadata['topic-A'] = Array(14)
-        .fill(1)
-        .map((_, i) => ({ partitionId: i }));
-
-      metadata['topic-B'] = Array(5)
-        .fill(1)
-        .map((_, i) => ({ partitionId: i }));
-
-      const members = [
-        {
-          memberId: 'member-3',
-          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
-            version: assigner.version,
-            topics: ['topic-A', 'topic-B'],
-            userData: Buffer.from(
-              JSON.stringify({
-                time: [0, 0], // process.hrtime()
-              }),
-            ),
-          }),
-        },
-        {
-          memberId: 'member-1',
-          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
-            version: assigner.version,
-            topics: ['topic-A', 'topic-B'],
-            userData: Buffer.from(
-              JSON.stringify({
-                time: [0, 1], // process.hrtime()
-              }),
-            ),
-          }),
-        },
-        {
-          memberId: 'member-4',
-          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
-            version: assigner.version,
-            topics: ['topic-A', 'topic-B'],
-            userData: Buffer.from(
-              JSON.stringify({
-                time: [1, 1], // process.hrtime()
-              }),
-            ),
-          }),
-        },
-        {
-          memberId: 'member-2',
-          memberMetadata: Kafka.AssignerProtocol.MemberMetadata.encode({
-            version: assigner.version,
-            topics: ['topic-A', 'topic-B'],
-            userData: Buffer.from(
-              JSON.stringify({
-                time: [2, 0], // process.hrtime()
-              }),
-            ),
-          }),
-        },
-      ];
-
-      const assignment = await assigner.assign({ members, topics });
-
-      expect(assignment).to.deep.equal([
-        {
-          memberId: 'member-3',
-          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
-            version: assigner.version,
-            assignment: {
-              'topic-A': [0, 4, 8, 12],
-              'topic-B': [0, 4],
-            },
-            userData: Buffer.alloc(0),
-          }),
-        },
-        {
-          memberId: 'member-1',
-          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
-            version: assigner.version,
-            assignment: {
-              'topic-A': [1, 5, 9, 13],
-              'topic-B': [1],
-            },
-            userData: Buffer.alloc(0),
-          }),
-        },
-        {
-          memberId: 'member-4',
-          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
-            version: assigner.version,
-            assignment: {
-              'topic-A': [2, 6, 10],
-              'topic-B': [2],
-            },
-            userData: Buffer.alloc(0),
-          }),
-        },
-        {
-          memberId: 'member-2',
-          memberAssignment: Kafka.AssignerProtocol.MemberAssignment.encode({
-            version: assigner.version,
-            assignment: {
-              'topic-A': [3, 7, 11],
-              'topic-B': [3],
-            },
-            userData: Buffer.alloc(0),
-          }),
-        },
-      ]);
-    });
-  });
-
-  describe('protocol', () => {
-    it('returns the assigner name and metadata', () => {
-      expect(assigner.protocol({ topics })).to.deep.equal({
-        name: assigner.name,
-        metadata: Kafka.AssignerProtocol.MemberMetadata.encode({
-          version: assigner.version,
-          topics,
-          userData: Buffer.from(
-            JSON.stringify({
-              time: assigner.getTime(),
-            }),
-          ),
-        }),
-      });
-    });
-  });
-});

packages/microservices/test/json-socket/connection.spec.ts

@@ -21,7 +21,7 @@ describe('JsonSocket connection', () => {
           new Promise(callback => {
             clientSocket.sendMessage({ type: 'ping' }, callback);
           }),
-          new Promise(callback => {
+          new Promise<void>(callback => {
             clientSocket.on(MESSAGE_EVENT, (message: string) => {
               expect(message).to.deep.equal({ type: 'pong' });
               callback();
@@ -53,16 +53,16 @@ describe('JsonSocket connection', () => {
       expect(clientSocket['isClosed']).to.equal(false);
       expect(serverSocket['isClosed']).to.equal(false);
       Promise.all([
-        new Promise(callback => {
+        new Promise<void>(callback => {
           clientSocket.sendMessage(longPayload, callback);
         }),
-        new Promise(callback => {
+        new Promise<void>(callback => {
           clientSocket.on(MESSAGE_EVENT, (message: { type: 'pong' }) => {
             expect(message).to.deep.equal({ type: 'pong' });
             callback();
           });
         }),
-        new Promise(callback => {
+        new Promise<void>(callback => {
           serverSocket.on(MESSAGE_EVENT, (message: { type: 'pong' }) => {
             expect(message).to.deep.equal(longPayload);
             serverSocket.sendMessage({ type: 'pong' }, callback);
@@ -85,7 +85,7 @@ describe('JsonSocket connection', () => {
         return done(err);
       }
       Promise.all([
-        new Promise(callback =>
+        new Promise<void>(callback =>
           Promise.all(
             helpers
               .range(1, 100)
@@ -97,7 +97,7 @@ describe('JsonSocket connection', () => {
               ),
           ).then(_ => callback()),
         ),
-        new Promise(callback => {
+        new Promise<void>(callback => {
           let lastNumber = 0;
           serverSocket.on(MESSAGE_EVENT, (message: { number: number }) => {
             expect(message.number).to.deep.equal(lastNumber + 1);
@@ -128,7 +128,7 @@ describe('JsonSocket connection', () => {
       })
         .then(
           () =>
-            new Promise(callback => {
+            new Promise<void>(callback => {
               expect(clientSocket['isClosed']).to.equal(true);
               expect(serverSocket['isClosed']).to.equal(true);
               callback();
@@ -154,7 +154,7 @@ describe('JsonSocket connection', () => {
       })
         .then(
           () =>
-            new Promise(callback => {
+            new Promise<void>(callback => {
               expect(clientSocket['isClosed']).to.equal(true);
               expect(serverSocket['isClosed']).to.equal(true);
               callback();