minecraft

#!/bin/bash
# /etc/init.d/minecraft

### BEGIN INIT INFO
# Provides:   minecraft
# Required-Start: $local_fs $remote_fs mysql
# Required-Stop:  $local_fs $remote_fs mysql
# Should-Start:   $network
# Should-Stop:    $network
# Default-Start:  2 3 4 5
# Default-Stop:   0 1 6
# Short-Description:    Minecraft server
# Description:    Invocates the minecraft server maintainance script
### END INIT INFO

# ================================= Copyright =================================
# Version 1.20 (2012-08-22), Copyright (C) 2011-2012
# Author: M3tal_Warrior (http://www.minecraftwiki.net/wiki/User:M3tal_Warrior)

#   This script is free software: you can redistribute it and/or modify it 
#   under the terms of the GNU General Public License as published by the 
#   Free Software Foundation, either version 3 of the License, or any later 
#   version.
#   This program is distributed in the hope that it will be useful, but 
#   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
#   or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
#   for more details.

#   As this is only a script, theres no copy of the GNU General Public License 
#   distributed along with this script.
#   See <http://www.gnu.org/licenses/> for the licence text.


# ================================= Settings ==================================
# Here you can change almost everything for the script to fill your needs.
# For information on the possible settings view the commented script at 
# http://www.minecraftwiki.net/wiki/M3tal_Warrior_Server_Startup_Script

# General settings
MAINTAIN_SCRIPT_PATH='/root/server/minecraft'
MAINTAIN_SCRIPT_NAME='server_control'
USERNAME='root'
SERVERTYPE='Vanilla'
SERVICE='minecraft_server.jar'
SERVERPATH='/root/server/minecraft/'
BACKUPPATH='/root/server/minecraft/backups'

# Advanced settings
CPU_COUNT=2
MIN_SERVER_RAM='820M'
MAX_SERVER_RAM='1224M'
JVM_OPTIONS='nogui'
USE_RAMFS='no'
USE_RAMDIR='minecraft'

# Expert settings
UPDATEBUKKIT="http://dl.bukkit.org/latest-rb/craftbukkit.jar"
UPDATEVANILLA="https://s3.amazonaws.com/MinecraftDownload/launcher/minecraft_server.jar"
INVOCATION="java -Xmx$MAX_SERVER_RAM -Xms$MIN_SERVER_RAM -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=$CPU_COUNT -XX:+AggressiveOpts -jar $SERVICE $JVM_OPTIONS"

# ============================= Script invocation =============================
# Since there was trouble with the user setting (being overridden by startup
# and such) and I splitted the script in an init script and a maintainance
# script. The latter is thus always invocated with the right user environment 
# and can be located anywhere in the system (preferrably in the users home 
# directory)

# ----------------------------- Download selection ----------------------------
# Selects the download location depending on what server you like to use.
case "$SERVERTYPE" in
  Vanilla)
    UPDATEURL="$UPDATEVANILLA"
    ;;
  Bukkit)
    UPDATEURL="$UPDATEBUKKIT"
    ;;
  *)
    echo "No valid server type has been provided - Exiting..."
    exit 1
    ;;
esac

# ------------------------------ Variable export ------------------------------
# Don't change anything in here! It exports the relevant settings for the 
# maintainance script to use them (by inheriting / making them envvars).
export SERVERTYPE
export SERVICE
export USE_RAMFS
export USE_RAMDIR
export SERVERPATH
export BACKUPPATH
export INVOCATION
export UPDATEURL

# -------------------------------- Invocation ---------------------------------
if [ `whoami` = "$USERNAME" ] ; then
  bash -c "$MAINTAIN_SCRIPT_PATH/$MAINTAIN_SCRIPT_NAME $*"
else
  su $USERNAME -c "$MAINTAIN_SCRIPT_PATH/$MAINTAIN_SCRIPT_NAME $*"
fi
exit 0