Sensor Node Service

A Python-based sensor node service that reads GPIO sensor data and transmits it to RabbitMQ. This service is designed for continuous monitoring and data collection from hardware sensors.

Features

• GPIO sensor data collection
• RabbitMQ integration for data transmission
• Configurable node settings
• Comprehensive logging system with rotation
  • Sensor data logs
  • Operations logs

Prerequisites

Before running this service, ensure you have:

• Python 3.8 or higher
• Poetry (Python package manager)
• RabbitMQ server
• Access to GPIO pins (if running on hardware)

Installation

1. Install dependencies using Poetry:

poetry install

Configuration

Edit node/settings.py to configure:

• Node identification (node_id)
• Geographic location (latitude, longitude)
• RabbitMQ connection settings:
  • Host
  • Port
  • Queue name
  • Credentials

Default configuration:

{
    "node_id": "belandur_01",
    "rabbitmq_host": "localhost",
    "rabbitmq_port": 5672,
    "rabbitmq_queue": "node_data"
}

Running the Service

Start the service using Poetry:

poetry run start

The service will:

1. Initialize logging systems
2. Begin reading GPIO sensor data
3. Transmit data to RabbitMQ
4. Repeat at 1-second intervals

Project Structure

node/
├── node/
│   ├── read/          # GPIO sensor reading functionality
│   ├── transmit/      # RabbitMQ transmission logic
│   ├── logger/        # Logging configuration
│   ├── settings.py    # Configuration settings
│   └── app.py         # Main application logic
└── tests/             # Test suite

Logging

Logs are stored in:

• logs/sensor/ - Sensor data logs (rotated daily)
• logs/operations/ - Operational logs (size-based rotation)

Testing

Run tests using:

poetry run pytest