mc-server-wrapper

Lightweight Rust program to manage a Java Minecraft server process (vanilla, Spigot, or PaperSpigot), providing niceties such as a Discord chat bridge, server restart-on-crash, and improved console output.

This has been running over top of a small server of mine 24/7 since March 2020 with zero crashes / major issues of any kind. I'd consider it ready for small-scale production usage.

Features

Runs on Linux, macOS, and Windows
Optionally enabled bi-directional Discord chat bridge (see Discord Bridge Setup)
- Commands (prefixed by !mc):
  - list: replies with a list of people playing Minecraft
- Embeds, mentions, and attachments in Discord messages are neatly formatted in Minecraft
- Bot status message displays server info (such as the names of online players)
Run server with configurable memory allocation
- Also allows passing custom JVM flags if desired
Restart server on crash
Auto-agree to EULA
Improved console output formatting

Installation

Downloading

You can download prebuilt binaries in the releases section.

Building

You can also build and install from source (requires an up-to-date Rust install):

cargo install --git https://github.com/Cldfire/mc-server-wrapper.git --locked

Usage

Generate a default config (customize the config path with the -c flag if desired):

mc-server-wrapper -g

Edit the config as required, explanation of options below. You can then start the server with the following (if you used the -c flag above use it again here):

mc-server-wrapper

Run mc-server-wrapper --help for some CLI args to quickly override the config with.

Config

[minecraft]
# The path to the server jar
server_path = "./server.jar"
# The memory in megabytes to allocate for the server
memory = 1024
# If you would like to pass custom flags to the JVM you can do so here
jvm_flags = "-XX:MaxGCPauseMillis=200"

# The Discord section is optional
[discord]
# Enable or disable the Discord bridge
enable_bridge = true
# The Discord bot token
token = "..."
# The Discord channel ID to bridge to
channel_id = 123
# Enable or disable bot status message updates
update_status = true

# Valid log levels: error, warn, info, debug, trace
#
# Logging levels set here only affect file logging
[logging]
# The log level for general mc-server-wrapper dependencies
all = "Warn"
# The log level for mc-server-wrapper
self = "Debug"
# The log level for Discord-related dependencies
discord = "Info"

Discord bridge setup

Register an application and a bot with Discord
Enable some things in the Privileged Gateway Intents section of the bot's admin portal
- Toggle Server Members Intent on
  - This is used to receive member updates from your guild (such as when someone changes their nickname so we can change the name we display in-game)
- Toggle Message Content Intent on
  - This is used to receive messsage content from the channel for the chat bridge in Discord so we can relay chat there into Minecraft
Add the bot to the guild you want to bridge to
Get the ID of the channel you want to bridge to (Google this for instructions)
Provide the bot token and channel ID in the config file
Enable the Discord bridge in the config file or with the -b flag

Future plans

Simple web and CLI interface to administrate server
- Change most common settings
- View online players
- Chat from the web
- Different levels of accounts (user, admin)
further ideas here

Library

The binary for this project is built on top of a library; if you want to implement a different feature set than the one I've chosen to, or implement the features in a different way, you can easily do so. See the mc-server-wrapper-lib README and its basic example for more.

cargo run --example basic -- path/to/server.jar

Screenshot

Early screenshot, subject to change:

License

^{Licensed under either of Apache License, Version
2.0 or MIT license at your option.}
_{Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.}