Summary

This is an example of two python microservices communicating with each other via gRPC using Consul as service registry.

Features

• Service registration
• gRPC health checking
• HTTP or DNS service names resolution

Prerequisites

• Python 2.7+ or 3.4+
• Python packages: grpcio, grpcio-tools, dnspython, requests, grpcio-health-checking, flask
• Consul binary (https://www.consul.io/downloads.html)

Setup

1. Compile protobuf services definitions: python -m grpc_tools.protoc --proto_path=. --python_out=. --grpc_python_out=. todolist.proto
2. Run Consul binary: consul agent -dev -enable-script-checks -config-dir=./consul.d
3. Run calculator service: python todolist_service.py
4. Run calculator client: python web_server.py [--resolver {dns,http,grpc-dns}]

Usage

• Access http://localhost:50052 from your browser and have fun!
• Monitor services from Consul UI running athttp://localhost:8500