Tutorial Setup

Setup for CORE

We assume the prior installation of CORE, using a virtual environment. You can then adjust your PATH and add an alias to help more conveniently run CORE commands.

This can be setup in your .bashrc

export PATH=$PATH:/opt/core/venv/bin
alias sudop='sudo env PATH=$PATH'

Setup for Chat App

There is a simple TCP chat app provided as example software to use and run within the tutorials provided.

Installation

The following will install chatapp and its scripts into /usr/local, which you may need to add to PATH within node to be able to use command directly.

sudo python3 -m pip install .

!!! note

Some Linux distros will not have **/usr/local** in their PATH and you
will need to compensate.

export PATH=$PATH:/usr/local

Running the Server

The server will print and log connected clients and their messages.

usage: chatapp-server [-h] [-a ADDRESS] [-p PORT]

chat app server

optional arguments:
  -h, --help            show this help message and exit
  -a ADDRESS, --address ADDRESS
                        address to listen on (default: )
  -p PORT, --port PORT  port to listen on (default: 9001)

Running the Client

The client will print and log messages from other clients and their join/leave status.

usage: chatapp-client [-h] -a ADDRESS [-p PORT]

chat app client

optional arguments:
  -h, --help            show this help message and exit
  -a ADDRESS, --address ADDRESS
                        address to listen on (default: None)
  -p PORT, --port PORT  port to listen on (default: 9001)

Installing the Chat App Service

You will first need to edit /etc/core/core.conf to update the config service path to pick up your service
```
custom_config_services_dir = <path for service>
```
Then you will need to copy/move chatapp/chatapp_service.py to the directory configured above
Then you will need to restart the core-daemon to pick up this new service
Now the service will be an available option under the group ChatApp with the name ChatApp Server

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