ReactOBus 0.2

Requirements

ReactOBus is known to work with Python3.4 and Python3.5 under Linux.

It depends on (see requirements.txt):

• pyzmq

• pyYAML

• SQLAlchemy (if you wish to store events in a database)

• setproctitle

Installing

ReactOBus is available on pypi and can be installed with:

pip install ReactOBus

By default, pip will not install SQLAlchemy. If need, install it manually afterward or ask pip to include the right ReactOBus variant with:

pip install ReactOBus[db]

It’s also possible to execute ReactOBus directly from the sources:

git clone https://github.com/ivoire/ReactOBus.git
cd ReactOBus
virtualenv -p python3.5 venv
source venv/bin/activate
pip install -r requirements.txt
python reactobus --level DEBUG --conf share/examples/reactobus.yaml

Configuration

The configuration file is a YAML dictionary with:

• inputs: a list of input streams

• outputs: a list of output streams

• core: configuration of the internal sockets

• reactor: the reacting part of ReactOBus

• db: the database configuration

All keys except core and inputs are optional. If the optional keys are not found in the configuration, the corresponding modules won’t be loaded.

Message format

For the moment, ReactOBus only accepts one type of messages. The messages should be multipart ZMQ messages with the following meaning:

• topic

• uuid (as generated by uuid.uuid1() in Python)

• datetime when the message was generated (isoformat)

• username of the sending process or user

• data as JSON