Summary

An application framework with built-in drivers (Controllers), data holders (Sources) and config parsers (Rules). Also includes a web interface for configuration and troubleshooting.

Features

• Abstract base classes for creating custom controllers, sources and rules

• The configuration is done using configparser with extended interpolation

• Start a new netdef project with cookiecutter. Templates available at https://bitbucket.org/fholmer/cookiecutter-netdef.

• Code in Rule-Source-Controller design pattern.

Built-in Controllers:

• OpcUa server / client ([freeopcua](https://pypi.org/project/freeopcua/))

• TcpModbus server / client ([pymodbus](https://pypi.org/project/pymodbus/))

• icmp ping / url ping

• XmlRpc client

• trigger events by using crontab format ([crontab](https://pypi.org/project/crontab/))

• disk, memory and CPU monitoring ([psutil](https://pypi.org/project/psutil/))

• MQTT client (using a simple messaging format called DataAccess) ([paho-mqtt](https://pypi.org/project/paho-mqtt/))

• Simple RESTJson client

Built-in Rules:

• Generic CSV config parser

Built-in application engines:

• threaded engine with stdout/stderr only

• threaded engine with web-interface (webadmin)

• serve webadmin behind nginx reverse proxy

Use Cases

Netdef is useful if you want to create a middleware that can translate a protocol into a completely different protocol or data format into a completely different data format.

Getting started

First install cookiecutter and netdef templates:

$ python3 -m venv cookiecutter/ $ cookiecutter/bin/pip install cookiecutter $ hg clone https://bitbucket.org/fholmer/cookiecutter-netdef cookiecutter/cookiecutter-netdef

Create your first application:

$ cookiecutter/bin/cookiecutter cookiecutter/cookiecutter-netdef/cookiecutter-minimal-app

Cookiecutter and netdef-templates can now be removed if you wish.

Setup your application:

$ cd your-application $ python3 -m venv venv $ source venv/bin/activate $ pip install -r requirements-dev.txt $ pip install -r requirements.txt