# Heisskleber

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[pypi status]: https://pypi.org/project/heisskleber/
[read the docs]: https://heisskleber.readthedocs.io/
[tests]: https://github.com/flucto-gmbh/heisskleber/actions?workflow=Tests
[pre-commit]: https://github.com/pre-commit/pre-commit
[ruff]: https://astral.sh/ruff

🇩🇪Heißkleber _m_: "hot glue".

Heisskleber is a versatile library designed to seamlessly "glue" together various
data producers and consumers across a multitude of protocols
including **zmq**, **mqtt**, **udp**, **serial**, **files** and **cmdline**.
Heisskleber offers asynchronous interfaces for a wide range of IoT connectivity needs.

## Features

- Multiple Protocol Support: Easy integration with zmq, mqtt, udp, serial, and cmdline.
- Custom Data Handling: Customizable `unpacker` and `packer` functions allow for the translation of any data format
(e.g., ascii encoded, comma-separated messages from a serial bus) into user defined objects (dataclasses, pydantic classes... default: dictionaries)
for easy manipulation and transmission.
- Extensible: Designed for easy extension with additional protocols and data handling functions.
- Modern type hints

## Installation

You can install _Heisskleber_ via [pip] from [PyPI]:

```console
pip install heisskleber
```

## Quick Start

Here's a simple example to demonstrate how Heisskleber can be used to connect a serial input to an mqtt output:

```python
"""
A simple forwarder that takes messages from a serial device and publishes them via MQTT.
"""
import asyncio

from heisskleber.serial import SerialReceiver, SerialConf
from heisskleber.mqtt import MqttSender, MqttConf


async def main():
  source = SerialSubscriber(config=SerialConf(port="/dev/ACM0", baudrate=9600))
  sink = MqttPublisher(config=MqttConf(host="mqtt.example.com", port=1883, user="", password=""))

  while True:
      data, metadata = await source.receive()
      await sink.send(data, topic=f"hotglue/{metadata.get("topic", "serial")}")

asyncio.run(main())
```

All sources and sinks come with customizable "unpacker" and "packer" functions, making it simple to work with various data formats.

See the [documentation][read the docs] for detailed usage.

## License

Distributed under the terms of the [MIT license][license],
_Heisskleber_ is free and open source software.

## Issues

If you encounter any problems,
please [file an issue] along with a detailed description.

[pip]: https://pip.pypa.io/
[file an issue]: https://github.com/flucto-gmbh/heisskleber/issues
[pypi]: https://pypi.org/
<!-- github-only -->

[license]: https://github.com/flucto-gmbh/heisskleber/blob/main/LICENSE