grpc::GoogleDefaultCredentials() with a specific credential file path (C++)

[eem...@gmail.com]

Hi,

Is there a way (with C++) to use GoogleDefaultCredentials without using the GOOGLE_APPLICATION_CREDENTIALS env var, but using a filepath, or any other method ?

Im trying to create multiple gRPC channels, each one with one diferent credential file. Im doing it now changing by code the previous env var, but it doesnt work well.

P.D: seems like other languages, like Go, allow this posibility:

   perRPC, _ := oauth.NewServiceAccountFromFile("service-account.json", scope)

Thanks!

[eem...@gmail.com]

Solved, using:

grpc::SslCredentials()

grpc::ServiceAccountJWTAccessCredentials()

grpc::CompositeChannelCredentials()

A composite credential can be done using the JSON data loaded from file.

thanks.