Simple gRPC example in python

This simple gRPC server has a structure:

fast-api --> todo --> aprover
fast-api --> user

The service includes examples:

• health-check
• Token auth
• Reflectin
• The call chain (timeout, deadline)
• Error handling
• Tracing (opentelemetry)

Command to generate interfaces from protobuf files:

python3 -m grpc_tools.protoc --python_out=. --grpc_python_out=. --pyi_out=. --proto_path=. ./protos/*.proto

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Run services:

uvicorn api:app --host 0.0.0.0 --port 5000
python server_user_grpc.py
python server_todo_grpc.py
python server_approver_grpc.py

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Example grpcurl for the project:

grpcurl -H 'rpc-auth:bsduyfwe7r23f556re23fdtcvwai' -plaintext 0.0.0.0:50053 list

grpcurl -plaintext -d '{"name":"5t 555 55","day":5,"completed":false}' 0.0.0.0:50051 todo.TodoService.CreateTodo

grpcurl -H 'rpc-auth:bsduyfwe7r23f556re23fdtcvwai' -plaintext 0.0.0.0:50053 grpc.health.v1.Health/Check

grpcurl -H 'rpc-auth:bsduyfwe7r23f556re23fdtcvwai' -plaintext 0.0.0.0:50053 user.UserService/ReadUser