Hands-On Software Engineering with Golang

Creating high-level clients for accessing data stores over gRPC

The protoc compiler, given the RPC definitions from the previous two sections as input, will generate a client and the required server stubs for the data store proxy service.

From the perspective of the API server, each RPC method is nothing more than a wrapper for invoking the similarly-named method of the underlying concrete store implementation that we configured the server to use. More specifically, to implement the RPC method called X, we perform the following steps:

1. Convert the fields of the RPC's input message (where required) into the values expected by the wrapped method, X.
2. Invoke X while watching out for any errors.

3. Convert and pack the output of X into the appropriate ...