TempMessenger

Goals

• A user can go to a website and messages.
• A user can see messages that others have sent.
• Messages automatically expire after a configurable amount of time.

Requirements

• Nameko microservices framework for Python
• Docker

Starting a RabbitMQ container

• It is good practice when running services in containers, Use an isolated docker network in order to be able to reference it using DNS.

  docker network create nameko_net

In the terminal execute:

$ docker run -d --network nameko_net --hostname rabbitmqhost --name rabbitmq -p 15672:15672 -p 5672:5672 rabbitmq:3-management

Starting a Redis Container

• Redis is an in-memory data store

• Execute this in terminal:

  $ docker run -d --network nameko_net --hostname redishost -p 6379:6379 --name redis redis

• Port 6379 is exposed on the container to facilitate communicate between Nameko and Redis container

Installing Python Redis Client

• This allows interaction with Python
• Add redis in the base.in file, and recomplie using pip-compile requirements/base.in to generate it to new base.txt.

Initial Setup

While from the root directory. To generate nameko dependencies file:

$ pip-compile requirements/base.in

• To generate teststing dependencies file:

$ pip-compile requirements/test.in

• To install the required packages for our development environment:

$ pip install -r requirements/base.txt -r requirements/test.txt

• To run the application: $ nameko run temp_messenger.service --config config.yaml

Tests

Tests are written using pytest

• Run pytest to run the tests from the terminal.

• To generate a report: $ pytest --cov=temp_messenger

workflow

• Used gitflow for versioning.

• CircleCI Continous Intergration tool.

• Codecov Code Review Tool.