gRPC NodeJS Server Reflection

This package adds Server Reflection support to your @grpc/grpc-js servers.

Installation

npm:

npm install grpc-node-server-reflection

yarn:

yarn add grpc-node-server-reflection

How to use

To add the server reflection service pass your gRPC Server instance to the provided wrapServerWithReflection.

import * as grpc from '@grpc/grpc-js';
import wrapServerWithReflection from 'grpc-node-server-reflection';

// This wraps the instance of gRPC server with the Server Reflection service and returns it.
const server = wrapServerWithReflection(new grpc.Server());


// Since the wrapped server intercepts the `addService` method to keep track
// of all services added to the server make sure to add your services after
// wrapping your instance of the gRPC Server.
server.addService(...);

After wrapping your server you should now be able to rely on server reflection:

$ grpcurl -plaintext localhost:8080 list


grpc.reflection.v1alpha.ServerReflection
example.ExampleService

$ grpcurl -plaintext localhost:8080 describe grpc.reflection.v1alpha.ServerReflection

grpc.reflection.v1alpha.ServerReflection is a service:
service ServerReflection {
  rpc ServerReflectionInfo ( stream .grpc.reflection.v1alpha.ServerReflectionRequest ) returns ( stream .grpc.reflection.v1alpha.ServerReflectionResponse );
}

Support Status

Current Support by Server Reflection Request type:

Type	Description	Supported
ListServices	List the full names of registered services	✔️
FileContainingSymbol	Find the proto file that declares the given fully-qualified symbol name.	✔️
FileByFilename	Find a proto file by the file name.	❌
FileContainingExtension	Find the proto file which defines an extension extending the given message type with the given field number.	❌