Task Manager

A robust Task Management application built with Django, utilizing Celery for asynchronous background processing. The entire stack is containerized using Docker and Docker Compose for easy deployment and development.

🛠 Tech Stack

• Backend: Python 3.10, Django
• Database: PostgreSQL 15
• Task Queue: Celery
• Message Broker: RabbitMQ 3 (Management enabled)
• Caching/Results: Redis
• Infrastructure: Docker & Docker Compose

📋 Prerequisites

• Docker Desktop (Windows/Mac) or Docker Engine (Linux)
• Git

🚀 Getting Started

Follow these steps to get the project running locally.

1. Clone the Repository

git clone <your-repo-url>
cd task_manager

2. Environment Configuration

The project uses environment variables to manage sensitive configuration. A template is provided in example.env.

Create your local .env file:

# Copy the example file to a real .env file
cp example.env .env

Note: The default values in example.env are pre-configured to work with the Docker setup out of the box.

3. Build and Run

Start the entire application stack:

docker compose up --build

Wait for the logs to stop scrolling. The web container depends on postgres and rabbitmq being healthy before it fully starts.

4. Initialize Database & Data

Once the containers are running, open a new terminal window and run these commands to set up the database and populate it with your sample data:

# 1. Apply database migrations
docker compose exec web python manage.py migrate

# 2. Populate the database with sample users/tasks 
docker compose exec web python manage.py seed_data

# 3. (Optional) Create a specific admin user if needed
docker compose exec web python manage.py createsuperuser

Services will be available at:

• Web App: http://localhost:8000
• RabbitMQ Dashboard: http://localhost:15672 (User: guest, Pass: guest)

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💻 Common Commands

Since the application runs inside Docker, you must execute management commands inside the container.

View Logs

# View logs for the web application
docker compose logs -f web

# View logs for celery worker (useful for debugging background tasks)
docker compose logs -f celery_worker

Access Container Shell

If you need to look at files inside the container:

docker compose exec web /bin/bash

Run Tests

docker compose exec web python manage.py test

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📂 Project Structure

.
├── core/                # Core Django project settings
├── project/             # Main application logic (models, views, tasks)
├── docker-compose.yml   # Orchestration for Web, DB, Redis, RabbitMQ, Celery
├── Dockerfile           # Python environment definition
├── health_check.sh      # Container health verification script
├── manage.py            # Django entry point
├── requirements.txt     # Python dependencies
└── .env                 # Local secrets (Not committed to Git)

⚠️ Troubleshooting

**1. "Permission Denied" on health_check.sh** If you are running on Windows and see errors related to the health check script, it may be due to line endings (CRLF). Run this to fix it permanently:

git add --renormalize .

2. Database connection failed Ensure the postgres container is "healthy". It may take a few seconds to initialize on the first run. The web container is configured to wait for it.