RoboCORE

RoboCORE is a combined Discord and Telegram bot that serves the cVault.finance CORE crypto community and it's CORE crypt currency. This community is active on both Telegram and Discord and this bot has functionality to track transactions and price changes etc on the Ethereum network.

Dart

At the moment RoboCORE runs in the Dart VM (not native compiled) and it uses the non-nullable "experiment" (Nyxx uses it and well, time to bite the bullet anyway). At the moment RoboCORE runs fine in Dart 2.9.3-1 on Ubuntu.

Config

RoboCORE uses robocore.yaml placed in the home directory of the user running RoboCORE. You can find a sample file.

PostgreSQL

We use PostgreSQL's apt repository to stay on track of updates of PostgreSQL:

Create the file `/etc/apt/sources.list.d/pgdg.list' and add a line for the repository

    deb http://apt.postgresql.org/pub/repos/apt/ bionic-pgdg main

Import the repository signing key, and update the package lists

    wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
    sudo apt-get update

Then we can install PostgreSQL:

    sudo apt install postgresql postgresql-client

Database

Run:

    sudo su postgres
    psql -c "create database robocore;"
    psql -c "create user robocore;alter user robocore with password 'robocore';grant all on database robocore to robocore;"
    exit

As services

Use a systemd service file like this for robocore, and one for roboserver:

[Unit]
Description=RoboCORE
After=network.target

[Service]
User=robocore
WorkingDirectory=/home/robocore/robocore
ExecStart=/home/robocore/robocore/robocore
LimitNOFILE=500000
KillMode=mixed
KillSignal=SIGTERM
Restart=always
RestartSec=2s
NoNewPrivileges=yes
StandardOutput=syslog+console
StandardError=syslog+console

[Install]
WantedBy=multi-user.target

Docker

I don't really like Docker but I decided to use it for Quickchart due to complicated dependencies.

    sudo apt install docker.io
    sudo systemctl start docker
    sudo systemctl enable docker

QuickChart

We run Quickchart server in Docker, due to making sure dependencies stay solid.

We want to run in systemd so:

    [Unit]
    Description=Quickchart
    After=docker.service
    Requires=docker.service

    [Service]
    TimeoutStartSec=0
    Restart=always
    ExecStartPre=-/usr/bin/docker exec quickchart stop
    ExecStartPre=-/usr/bin/docker rm quickchart
    ExecStartPre=-/usr/bin/docker pull ianw/quickchart:v1.4.3
    ExecStart=/usr/bin/docker run --rm --name quickchart -p 8089:3400  ianw/quickchart:v1.4.3

    [Install]
    WantedBy=default.target

To start the service using systemd:

    sudo systemctl daemon-reload
    sudo systemctl start quickchart
    sudo systemctl status quickchart

Enable the systemd service so that quickchart starts at boot.

    sudo systemctl enable quickchart.service

See

https://quickchart.io/documentation/

https://github.com/typpo/quickchart