Jobsitychat

Chat by sockets, if you want to try it go to ===> Jobsitychat

Prerequisites

• Git (Installation), (SSH config)
• Docker (Installation) (Linux-postinstall), Docker-composer (Installation)
• AWS-CLI (Installation) (only if you want to deploy to AWS)
• Python3
• Node.js and NPM

Installation

Install dynamodb by docker, the docker-compose file set a default database

docker-compose up

Install python dependencies

cd server
virtualenv --python=python3 venv
source venv/bin/activate
pip install -e .

Run Test

Remember to be inside ./server

pytest jobsitychat/test/

Coverage, Current testing coverage 100%

py.test --cov=jobsitychat/controllers/ --cov=jobsitychat/libraries/ --cov=jobsitychat/models/ --cov=jobsitychat/routes/ jobsitychat/test/

Linter, Current linter coverage 100%

pylint jobsitychat/

Technical information

• The code is developed under the functional programming paradigm
• Serverless architecture was chosen for the optimization of resources, costs and ensuring high availability.
• You can see all the architecture configuration in the file server/serverless.yml
• Dynamodb was chosen for the high performance to store the data types of a chat
• For the authentication control, cognito was used, due to the high security standards

Cloud computing arquitecture with serverless

Authorizer architecture

Code architecture

clean architecture

Features

• All mandatory features are developed
• You can register, log in and recover password
• The bot is fault tolerant in the event that the stock api fails, it will try 3 times, it is decoupled and each call to the bot is a unique and asynchronous instruction, it also validates if the code is incorrect
• Bonus Features are developed

Deploy

Remember you need AWS-CLI, it is not possible to test in localhost

Install required npm packages

npm install

Install Serverless Framework

npm install -g serverless@1.74.1

Install required Python packages

pip install -r requirements.txt -t ./lib/python

Install required serverless plugins

sls plugin install -n serverless-pseudo-parameters

Deploy to AWS

serverless deploy --stage dev

Additional configuration

we do not buy a domain so we need to do few configurations

• Copy your Websocket endpoint from your console like this wss://hqzzsehbij.execute-api.us-west-2.amazonaws.com/dev and replace in the dns section web socket of the frontend

• Go to Cognito User Pools https://us-west-2.console.aws.amazon.com/cognito/users/?region=us-west-2#/?_k=qaioty and copy the DNS

• Go to app Client Setting make sure that Cognito User Pool is enabled, and copy the ID like XXXXXXXXXXXXXXXXX

• Build your DNS log in, replace COGNITO_DNS, COGNITO_CLIENT_ID and enjoy your app
• https://COGNITO_DNS.auth.us-west-2.amazoncognito.com/login?response_type=token&client_id=COGNITO_CLIENT_ID&redirect_uri=https://COGNITO_DNS.s3-us-west-2.amazonaws.com/index.html