I want to connect to google spanner from a c++ program. Is there a client library exists for c++? Where can I get gRPC protocol buffers for spanner APIs?
The Spanner protobuf definitions can be found at https://github.com/googleapis/googleapis/tree/master/google/spanner. At the time of writing, there are only four Google client libraries for Spanner: Go, Java, Node.js, and Python.