Messenger

• The part of the backend that describes the basic functionality of the messenger
  
  
• I have described in detail how to use the APIs of this project in the Postman documentation :
  • https://documenter.getpostman.com/view/26500283/2s9Yyy9Jru
    
    
• Also in the image on my Docker Hub is always the latest version of the code using the GitHub CD :
  • https://hub.docker.com/r/vyacheslavshrot/messenger

Structure

• This project is written in the latest version of Python 3.11 along with the FastAPI framework
  
  

• All code is asynchronous like my previous projects
  
  

• NoSQL database MongoDB is connected via official images
  
  

• Written easy PyTest tests for a simple notion that everything is working properly
  
  

• CI/CD actions on pull request:

  • CI:
    • the same PyTest tests are used
      
      
  • CD:
    • pushing an image to my Docker Hub
      
      

• There are 2 main kinds of APIs here:

  • For User:

    • APIs for registration and login with obtaining JWT token for user authorization
      
      

  • For Messages:

    • APIs for creating chat, get messages, and sending messages
      • aiocache is also used to record and if available, take messages from the cache
        
        
      • WebSocket is used to implement chat functionality
        
        

• Also added a manifest for kubernetes (which I will still improve)

Launch in Docker-Compose

• You need to create an .env file at the docker-compose file level and write the variables
  
  

• For this purpose, a ready-made Docker-Compose file has already been built using:

  • image vyacheslavshrot/messenger:latest:

    • for this container, write a SECRET_KEY variable for the JWT token ( it can be a random value )
      
      

  • image mongo:

    • for this container we write:
      • MONGO_INITDB_ROOT_USERNAME
        
        
      • MONGO_INITDB_ROOT_PASSWORD
        
        
      • MONGO_DB_AUTH_SOURCE ( for this variable usually admin value is used)
        
        

  • image mongo-express:

    • ME_CONFIG_MONGODB_ADMINUSERNAME ( use the same data as for image mongo )
      
      
    • ME_CONFIG_MONGODB_ADMINPASSWORD ( use the same data as for image mongo )
      
      
    • ME_CONFIG_MONGODB_SERVER=mongo
      
      

• After installing the environment, we run

docker-compose up -d

• Go to the mongo-admin panel ( mongo-express container ):

  • Create the base messenger
    
    

  • Create 3 collections:

    • users
      
      

    • chat
      
      

    • messages
      
      

• And at the level of docker-compose.yml create a folder mongodb_data where our data from the database will be stored