PaperMC/scripts/testServer.sh
Aikar 8833b1ba15 Preload important classes such as Logger and JLine
This is for 2 reasons:
1) Ensuring our log4j is mostly loaded at OUR version.
   I've seen stack traces with line numbers that do not match our version. This means that some
   plugin has shaded in log4j and their loaded version is mixing with ours....
   So by at least trying to load a bunch of log4j classes before we load plugins, we can be
   more sure mixed versions are not loading.

2) If the jar file is replaced while the server is runnimg class not found errors galore
   This will preloaod a bunch of classes commonly seen to error during shutdown due to this.

   The goal here is to help let the server shutdown gracefully as possible. Some plugins will
   still blow up here if they access a class that hadn't been loaded yet, but goal is to at least
   stop freezing the shutdown process as it does with JLine and Log4j errors requiring an external kill.

   Ideally you should not replace jars while the server is running, but it is something that happens in
   development for testing.

Updated test server to do a copy though to avoid this happening in Paper development.
2020-05-24 13:09:02 -04:00

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#!/usr/bin/env bash
set -e
PS1="$"
basedir="$(cd "$1" && pwd -P)"
workdir="$basedir/work"
minecraftversion=$(cat "$workdir/BuildData/info.json" | grep minecraftVersion | cut -d '"' -f 4)
gitcmd="git -c commit.gpgsign=false"
#
# FUNCTIONS
#
source $basedir/scripts/functions.sh
updateTest() {
paperstash
$gitcmd reset --hard origin/master
paperunstash
}
papertestdir="${PAPER_TEST_DIR:-$workdir/test-server}"
mkdir -p "$papertestdir"
cd "$papertestdir"
#
# SKELETON CHECK
#
if [ ! -d .git ]; then
$gitcmd init
$gitcmd remote add origin ${PAPER_TEST_SKELETON:-https://github.com/PaperMC/PaperTestServer}
$gitcmd fetch origin
updateTest
elif [ "$2" == "update" ] || [ "$3" == "update" ]; then
updateTest
fi
if [ ! -f server.properties ] || [ ! -d plugins ]; then
echo " "
echo " Checking out Test Server Skeleton"
updateTest
fi
#
# EULA CHECK
#
if [ -z "$(grep true eula.txt 2>/dev/null)" ]; then
echo
echo "$(color 32) It appears you have not agreed to Mojangs EULA yet! Press $(color 1 33)y$(colorend) $(color 32)to confirm agreement to"
read -p " Mojangs EULA found at:$(color 1 32) https://account.mojang.com/documents/minecraft_eula $(colorend) " -n 1 -r
echo ""
if [[ ! $REPLY =~ ^[Yy]$ ]]; then
echo "$(color 1 31)Aborted$(colorend)"
exit;
fi
echo "eula=true" > eula.txt
fi
#
# JAR CHECK
#
folder="$basedir/Paper-Server"
jar="$folder/target/paper-${minecraftversion}.jar"
if [ ! -z "$PAPER_JAR" ]; then
jar="$PAPER_JAR"
fi
if [ ! -d "$folder" ]; then
(
echo "Building Patched Repo"
cd "$basedir"
./paper patch
)
fi
if [ "$2" == "build" ] || [ "$3" == "build" ]; then
(
echo "Building Paper"
cd "$basedir"
mvn package
)
fi
#
# JVM FLAGS
#
cp "$jar" paper.jar
baseargs="-server -Xms${PAPER_MIN_TEST_MEMORY:-512M} -Xmx${PAPER_TEST_MEMORY:-2G} -Dfile.encoding=UTF-8 -XX:MaxGCPauseMillis=150 -XX:+UseG1GC "
baseargs="$baseargs -DIReallyKnowWhatIAmDoingISwear=1 "
baseargs="$baseargs -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=40 -XX:G1MaxNewSizePercent=60 "
baseargs="$baseargs -XX:InitiatingHeapOccupancyPercent=10 -XX:G1MixedGCLiveThresholdPercent=80 "
baseargs="$baseargs -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5100"
cmd="java ${PAPER_TEST_BASE_JVM_ARGS:-$baseargs} ${PAPER_TEST_EXTRA_JVM_ARGS} -jar paper.jar ${PAPER_TEST_APP_ARGS:-} nogui"
screen_command="screen -DURS papertest $cmd"
tmux_command="tmux new-session -A -s Paper -n 'Paper Test' -c '$(pwd)' '$cmd'"
#
# MULTIPLEXER CHOICE
#
multiplex=${PAPER_TEST_MULTIPLEXER}
if [ ! -z "$PAPER_NO_MULTIPLEX" ]; then
cmd="$cmd"
elif [ "$multiplex" == "screen" ]; then
if command -v "screen" >/dev/null 2>&1 ; then
cmd="$screen_command"
else
echo "screen not found"
exit 1
fi
elif [ "$multiplex" == "tmux" ] ; then
if command -v "tmux" >/dev/null 2>&1 ; then
cmd="$tmux_command"
else
echo "tmux not found"
exit 1
fi
else
if command -v "screen" >/dev/null 2>&1 ; then
cmd="$screen_command"
elif command -v "tmux" >/dev/null 2>&1 ; then
cmd="$tmux_command"
else
echo "screen or tmux not found - it is strongly recommended to install either"
echo "No terminal multiplexer will be used"
fi
fi
#
# START / LOG
#
if [ ! -z "$PAPER_TEST_COMMAND_WRAPPER" ]; then
$PAPER_TEST_COMMAND_WRAPPER $cmd
else
echo "Running command: $cmd"
echo "In directory: $(pwd)"
#sleep 1
/usr/bin/env bash -c "$cmd"
fi