A simple controller for message queue pipelines
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# Python Gabby
A simple controller for MQTT and MQTT-SN pipelines using Mosquitto and RSMB
## Installing
You can install the package through pip
```bash
pip install gabby
```
## Examples
Before run examples, please initialize the Mosquitto or RSMB server.
#### Receiving messages
```python
from gabby.gabby import Gabby, Topic
from gabby.controller import Controller
class PrinterGabby(Gabby):
def transform(self, message):
print(f'ARRIVED! Data: {message.data}')
return []
if __name__ == "__main__":
controller = Controller()
topic_A = Topic('queue/a', 'i')
topic_B = Topic('queue/b', 'i')
printer_gabby = PrinterGabby([topic_A], [topic_B])
controller.add_gabby(printer_gabby)
controller.run()
```
#### Transmitting messages
```python
from gabby.gabby import Gabby, Topic
from gabby.message import Message
if __name__ == "__main__":
topic_A = Topic('queue/a', 'i')
topic_B = Topic('queue/b', 'i')
g = Gabby([topic_B], [topic_A])
data = (1,)
g.send(Message(data, g.output_topics))
```
#### Using UDP broker
```python
from gabby.gabby import Gabby, Topic
from gabby.controller import Controller
class PrinterGabby(Gabby):
def transform(self, message):
print(f'ARRIVED! Data: {message.data}')
return []
if __name__ == "__main__":
controller = Controller()
topic_A = Topic('queue/a', 'i', 'udp')
topic_B = Topic('queue/b', 'i', 'udp')
printer_gabby = PrinterGabby([topic_A], [topic_B], transmission='udp')
controller.add_gabby(printer_gabby)
controller.run()
```
#### Using both UDP and TCP topics
You can use both TCP and UDP brokers
```python
import logging
from gabby import Gabby, Topic, Controller
class LoggerGabby(Gabby):
def transform(self, message):
logging.debug(f"ARRIVED! Data: {message.data}")
def setup_logging(level):
"""
Setup logging level
"""
logging.basicConfig(
format='%(levelname)s: %(message)s',
level=getattr(logging, level.upper())
)
if __name__ == "__main__":
setup_logging('debug')
controller = Controller()
topic_A = Topic('qa', 'i', 'udp')
topic_F = Topic('qb', 'i', 'udp')
topic_B = Topic('queue/1', 'i', 'tcp')
topic_C = Topic('queue/a', 'i', 'tcp')
topic_D = Topic('queue/b', 'i', 'tcp')
topic_E = Topic('queue/c', 'i', 'tcp')
logger_gabby = LoggerGabby(
[topic_A, topic_F, topic_B, topic_C, topic_D, topic_E],
transmission=['tcp', 'udp']
)
controller.add_gabby(logger_gabby)
controller.run()
```
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