ArgumentsHost Microservices can't getHandler and getClass

[pergerk]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current behavior

Hello, I am trying to getClass and getHandler under rpc but functions are undefined? And I doing it wrong or do we have any case to solve this ?

const rpc = host.switchToRpc(); const ctx = rpc.getContext(); console.log('host.getType()', host.getType()); console.log('ctx.getClass fn', ctx.getClass); console.log('ctx.getHandler fn', ctx.getHandler); ctx.getClass and ctx.getHandler are undefined under rpc scope

Minimum reproduction code

https://github.com/pergerk/microservices

Steps to reproduce

npm i npm run start:dev gw & npm run start:dev service1 & npm run start:dev service2 curl http://localhost:3000/service1

Expected behavior

const ctx = rpc.getContext(); should return name of class ctx.getClass().name should return name of handler ctx.getHandler().name

Package

• [ ] I don't know. Or some 3rd-party package
• [ ] code>@nestjs/common</code
• [ ] code>@nestjs/core</code
• [X] code>@nestjs/microservices</code
• [ ] code>@nestjs/platform-express</code
• [ ] code>@nestjs/platform-fastify</code
• [ ] code>@nestjs/platform-socket.io</code
• [ ] code>@nestjs/platform-ws</code
• [ ] code>@nestjs/testing</code
• [ ] code>@nestjs/websockets</code
• [ ] Other (see below)

Other package

No response

NestJS version

8.1.2

Packages versions

"@grpc/grpc-js": "^1.4.2",
"@grpc/proto-loader": "^0.6.6",
"@nestjs/common": "^8.1.2",
"@nestjs/core": "^8.1.2",
"@nestjs/microservices": "^8.1.2",
"@nestjs/platform-express": "^8.1.2",
"@nestjs/swagger": "^5.0.0",
"class-transformer": "^0.4.0",
"class-validator": "^0.13.1",

Node.js version

v16.5.0

In which operating systems have you tested?

• [X] macOS
• [ ] Windows
• [X] Linux

Other

[Nest] 89073 - 31.10.2021, 05:59:43 LOG [NestMicroservice] Nest microservice successfully started +12ms callone called host.getType() rpc ctx.getClass fn undefined ctx.getHandler fn undefined filtered instance rpc Error in service 1

[jmcdo29]

An ArgumentHost has never been able to get the class or handler, because ArgumentHost is used in an ExceptionFilter where there may not be a matching class or route handler (404s and such). Only the ExecutionContext has the getClass() and getHandler() methods. And the ExecutionContext is different than the host.switchToRcp().getContext() return object.