https://github.com/dleedev365/apricity-serverless-django

A simple CRUD application built with Django + PostgreSQL, deployed serverless to AWS
https://github.com/dleedev365/apricity-serverless-django

aws crud-application django postgresql python3 websocket

Last synced: 10 days ago
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A simple CRUD application built with Django + PostgreSQL, deployed serverless to AWS

• Host: GitHub
• URL: https://github.com/dleedev365/apricity-serverless-django
• Owner: dleedev365
• Created: 2020-04-22T19:23:58.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-06-06T01:50:38.000Z (over 4 years ago)
• Last Synced: 2024-11-10T07:09:16.138Z (10 days ago)
• Topics: aws, crud-application, django, postgresql, python3, websocket
• Language: Python
• Homepage:
• Size: 34.2 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Technology Overview

## 1. Application 

- Django

- PostgreSQL

- Python3

## 2. Deployment

- Zappa

## 3. Cloud 

- AWS S3 (Front-End)

- AWS CloudFront (Front-End)

- AWS Lambda (Back-end)

- AWS RDS AuroraDB (Database)

- AWS VPC (Security)

- AWS API Gateway (AWS Communication)

- AWS CloudWatch (Monitoring)

### To Run the app locally, you need to follow the following steps:

1. Create a virtual environment, "python3 -m venv app-env"

1. Go to virtual environment, "source app-env/bin/activate"

2. Install packages, "pip install -r requirements.txt" 

3. Install redis-server for websocket, "sudo apt install redis-server"

4. Run the redis server in a terminal, "redis-server"

5. Run the Django in other terminal, "python manage.py runserver"

-------------------------------------------------------------------------------

Open the Chrome console to inspect errors.

**You need to run redis-server first,** if encountered by this error

*  This error persists when deployed with Zappa

```

(index):24 WebSocket connection to '' failed: Error during WebSocket handshake: Unexpected response code: 200

(anonymous) @ (index):24

(index):45 Chat socket error occured

(index):41 Chat socket closed

```

-------------------------------------------------------------------------------

### Quick summary of changes

* app>setting.py

    * CHANNEL_LAYERS =[... "hosts": [("localhost", 6379)] ]   

    * WSGI_APPLICATION = 'app.wsgi.application", ASGI_APPLICATION = 'app.routing.application'

    * INSTALLED_APPS = [...'channels'...]

* chat>views.py

    * ASGI_APP.... changed chat.routing to app.routing

* chat>consumer.py

* chat>template>chat>room.html

    * changed -> var chatSocket = new WebSocket 'ws://' + window.location.host + '/ws/chat/' + roomName + '/')

* chat>templates>chat>index.html

* chat>routing.py 

* app>asgi.py

* chat>urls.py

* zappa_settings.json -> timeout set to 300 seconds (becayse, when deployed, registering a user takes a long timm and causes timeout error)