Distributed Streaming Data Sharing Manager (DSSM)

This repository contains a Python interface for the Distributed Streaming Data Sharing Manager (DSSM)

Requirements

The Python interface requires an executable DSSM environment. You can find the instructions under link follows.

Installing

To use the Python interface, the following library must be installed.

pip install sysv-ipc

Using Pip:

sudo apt install python3-pip python3-setuptools python3-venv python3-wheel
pip install --upgrade setuptools wheel build hatchling
pip install -i https://test.pypi.org/simple/ dssm-python

Dataclass

The Python interface makes it possible to exchange data between different processes, both in Python and in C. To define which data is exchanged, the dataclass must first be defined. An example can be found in the /sample folder.

The corresponding dataclass of the C++ example is the /sample/ini_ssm.py class.

Sample

The sample programs included can be found can be found in the project. These are defined in such a way that data can be exchanged between Python and C/C++.

This was tested with the SSM C++ sample that can be found in the corresponding project in the /sample/Cpp_sample folder. The following shows how data can be exchanged between Python and C++.

For the data exchange to work, the coordinator must be executed as in DSSM.

ssm-coordinator

C++ write data

In this example, data is sent from the C++ example and read by Python.

C++ write

./samples/Cpp_Sample/ssmWriteSample 

Python read

python3 sample/read_sample.py

Python write data

In this example, data is sent from the Python example and read by C++ and Python.

Python write

python3 sample/write_sample.py

Python read

python3 sample/read_sample.py

C++ read

./samples/Cpp_Sample/ssmReadSample