$\color{MidnightBlue}\textit{\textbf{EX-Rates}}$

Small Python client/server app that communicates by gRPC protocol and provides currency exchange rates

Prerequisites:

• Python 3.7 or higher
• Install Requests library (pip install requests)
• Install google protobuf (pip install protobuf)
• Install gRPC Python scaffold (grpcio, grpcio-tools) as it described in gRPC tutorial.

Run app:

• Run the server:

   python ex_rates_svc.py
  

  Service listens port 50051

• Run the client providing currency code like USD, EUR, UAH, GBP, etc. as a command line parameter, and optionally ip address of host where ex_rates_svc.py is launched (by default: localhost:50051)

   python ex_rates_clnt.py --code USD
   python ex_rates_clnt.py --code EUR --host ex-rates-service-ip:port
  

  The client prints the rates of the specified currency against to others

Update/generate gRPC code:

For (re)generation of gRPC code integrated into application use grpc_tools.
Run it from the project's root directory:

python -m grpc_tools.protoc -I./protos --python_out=gen --pyi_out=gen --grpc_python_out=gen protos/ex-rates.proto

The generated code drops into gen subfolder