gRpc maps don't work

[talgryn]

I'm getting the following error when my gRpc service contains a map
example proto:

syntax = "proto3";
package investing.data.demo;
option go_package = "pkg/protos/demo;demo";

import "google/protobuf/timestamp.proto";

service CoinMarketCapService {
  rpc GetCryptoData(GetCryptoDataRequest) returns (GetCryptoDataResponse) {}
}

message CreateNewEcfmCurrenciesRequest{
  uint64 limit = 1;
  uint64 rank = 2;
}
message CreateNewEcfmCurrenciesResponse{}
message CreateNewCryptoPairsRequest{}
message CreateNewCryptoPairsResponse{}

message UpdateMarketPairsRequest {

}
message UpdateMarketPairsResponse {

}

message GetNewCryptosRequest {}
message GetNewCryptosResponse {
  repeated GetCryptoDataResponse cryptos = 1;
}

message UpdateEcfmCryptosRequest { 
  int32 count = 1;
}

message UpdateEcfmCryptosResponse { 
	uint64 count = 1;
}

message UpdateCryptoDataRequest { }
message UpdateCryptoDataResponse { 
	uint64 count = 1;
}

message GetApiUsageStatsRequest { }

message GetApiUsageStatsResponse { 
  uint64 RateLimit = 1;
	uint64 DailyCreditLimit = 2; 
	google.protobuf.Timestamp DailyResetTime = 3;
	uint64 MonthlyCreditLimit = 4;
	google.protobuf.Timestamp MonthlyResetTime = 5;
	uint64 DailyCreditsUsed = 6;
	uint64 MonthlyCreditsUsed = 7;
}

message GetCryptoDataRequest {
	uint64 id = 1; 
  	string slug = 2;
	repeated string convertSymbols = 3;
}

message Urls { repeated string url = 1; }
 
message GetCryptoDataResponse { 
	uint64    ID = 1;    
	string    Name = 2;    
	map<string, string> Quotes = 20; 
}

this results in the following error:

 yarn start
yarn run v1.22.17
$ mesh dev
💡 🕸️  Mesh - Server Generating the unified schema...
💥 🕸️  Mesh - coinmarketcap Failed to generate the schema 
 Error: duplicate name 'Quotes' in Type GetCryptoDataResponse
    at Type.add (/Users/tal/playground/mesh/coinmarketcap/node_modules/protobufjs/src/type.js:331:15)
    at Function.fromDescriptor (/Users/tal/playground/mesh/coinmarketcap/node_modules/protobufjs/ext/descriptor/index.js:226:18)
    at Function.fromDescriptor (/Users/tal/playground/mesh/coinmarketcap/node_modules/protobufjs/ext/descriptor/index.js:92:42)
    at createPackageDefinitionFromDescriptorSet (/Users/tal/playground/mesh/coinmarketcap/node_modules/@grpc/proto-loader/build/src/index.js:159:32)
    at Object.loadFileDescriptorSetFromObject (/Users/tal/playground/mesh/coinmarketcap/node_modules/@grpc/proto-loader/build/src/index.js:214:12)
    at GrpcHandler.getMeshSource (/Users/tal/playground/mesh/coinmarketcap/node_modules/@graphql-mesh/grpc/index.js:528:51)
    at async /Users/tal/playground/mesh/coinmarketcap/node_modules/@graphql-mesh/runtime/index.js:35:28
💥 🕸️  Mesh An error occured while writing the schema file: Error: Schemas couldn't be generated successfully. Check for the logs by running Mesh with DEBUG=1 environmental variable to get more verbose output.
    at Object.getMesh (/Users/tal/playground/mesh/coinmarketcap/node_modules/@graphql-mesh/runtime/index.js:65:15)
💥 🕸️  Mesh An error occurred while building the artifacts: Error: Schemas couldn't be generated successfully. Check for the logs by running Mesh with DEBUG=1 environmental variable to get more verbose output.
    at Object.getMesh (/Users/tal/playground/mesh/coinmarketcap/node_modules/@graphql-mesh/runtime/index.js:65:15)
💥 🕸️  Mesh - Server Error: Schemas couldn't be generated successfully. Check for the logs by running Mesh with DEBUG=1 environmental variable to get more verbose output.
    at Object.getMesh (/Users/tal/playground/mesh/coinmarketcap/node_modules/@graphql-mesh/runtime/index.js:65:15)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

If i remove the Quotes from the response, it works properly.
Any idea if maps are supposed to be supported, or any plans to support it?

[ardatan]

Would you create a PR with a failing test? Thanks.