Proxy server component

Task description

Task description is in DESCRIPTION.md

Issues found in task description and fixed

• signal.Notify wasn't cathing SIGTERM signal
• proxy.OrderRequest had a uint8(rand.Uint32()) randomizer, which will return 1 or 2 very rarely. Not good for testing purposes

Solution notes

• 🏆 standard Go library (except for Gorilla Websocket package)
• ↪️ clean architecture (server->handler->service)
• 📖 standard Go project layout
• 🔨 Docker-compose, Dockerfiles & Makefile included
• 🚽 tests with mocks included

HOWTO

• start server with

make server

• then start proxy component with some restrictions

make proxy N=5 S=7000

where N is a limit of opened orders per client per instrument at the moment of time and S is the sum limit of volumes of opened orders per client per instrument at the moment of time

• finally, start the client:

make client

• test with

make test

• start server with proxy in containers:

make up

• stop container:

make down

A picture is worth a thousand words