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OpenRCT2 Prometheus Exporter

consolelog on Twitch Ecologi (Trees)

An OpenRCT2 plugin that exports Prometheus metrics for a (limited but growing) set of park metrics.

Installation

This plugin requires the OpenRCT2 networking API, available on the OpenRCT2 master branch, in preparation for OpenRCT2 v0.4.0.

Download index.js from GitHub and save the file into your OpenRCT2 plugin folder. This location can be found according to the OpenRCT2 scripting documentation.

Usage

The plugin runs in the background, listening for scripts at the address "localhost:9751", which is currently hardcoded into the file, but may be configurable soon.

Metrics

The following metrics are available. Metric names and labels are subject to change until version 1.0.0.

metric type stability labels
park_cash gauge unstable park
park_entrance_fee_cash gauge unstable park
park_bank_loan_cash gauge unstable park
park_max_bank_loan_cash gauge unstable park
park_rating gauge unstable park
guests gauge unstable park
staff gauge unstable park
peeps gauge unstable park
ducks gauge unstable park

Yes, these metrics names are bad and don't follow the naming best practices. I consider this to be a bug.

Development

This plugin is maintained in a single file, index.js. While unusal, this allows me to keep the number of dependencies to a minimium and makes it easy for users to install into their copy of OpenRCT2. (This is inspired by the reasoning behind the C single-file libraries list).

This plugin should be written to target EcmaScript 5 only, with no extensions. The plugin environment in OpenRCT2 is not a modern browser nor Node.js installation, and thus only ES5 is reliably available. This policy may change if and when OpenRCT2 upgrades and enables later feature sets of Duktape.

This project uses specific versions and configurations of Prettier and ESLint using Nix. Once installed, you'll be able to use these versions by running nix-shell. You can also use a Docker container, similar to the GitHub Actions configuration.

Twitch Livestreams

You can catch me working on this, or other programming projects, as @consolelog on Twitch. Fill free to come by and ask questions!

Donations

OpenRCT2 trees scenery window

If you enjoy using this plugin, I ask that you plant some trees on Ecologi to help offset and reduce our carbon impact.