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Alternative - Handle SIGTERM by saving world and shutting down gracefully #31

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Alternative - Handle SIGTERM by saving world and shutting down gracefully #31

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4b69568
Handle SIGTERM by saving world and shutting down gracefully
Apr 2, 2021
5ce3960
Handle SIGTERM by saving world and shutting down gracefully - alterna…
Apr 5, 2021
313b937
Handle SIGTERM by saving world and shutting down gracefully - alterna…
Apr 5, 2021
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2 changes: 1 addition & 1 deletion template/vanilla/Dockerfile.template
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ FROM mono:slim
# Update and install needed utils
RUN apt-get update && \
apt-get upgrade -y && \
apt-get install -y curl nuget vim zip && \
apt-get install -y curl nuget vim zip procps screen && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*

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36 changes: 35 additions & 1 deletion template/vanilla/run-vanilla.sh
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Expand Up @@ -27,5 +27,39 @@ if [ "${world:-null}" != null ]; then
CMD="$CMD -world /config/$world"
fi

# trap SIGTERM signal and call graceful_shutdown
trap 'kill ${!}; graceful_shutdown' SIGTERM

function graceful_shutdown() {
# Send a message to players that the server is shutting down
screen -p 0 -S terraria_server_screen -X eval "stuff 'say Server shutting down'\015"

echo "Stopping Terraria server..."
echo "Saving world"

# Send 'exit' command to Terraria Server
screen -p 0 -S terraria_server_screen -X eval "stuff 'exit'\015"

# Waiting for server to finish saving & shutting down
pid=$(pgrep -f ^./TerrariaServer)
if [ -z "$pid" ]; then exit 1; fi
while [ -e /proc/$pid ]; do
sleep 1
done
echo "World save complete"
echo "Shutting down"
exit 0
}

echo "Starting container, CMD: $CMD $@"
exec $CMD $@
screen -AmdS terraria_server_screen bash -c "$CMD $@ | tee -a /config/server.log"
sleep 5
tail -f /config/server.log &

tail -f /dev/null & wait ${!}

pid=$(pgrep -f ^./TerrariaServer)
if [ -z "$pid" ]; then exit 1; fi
while [ -e /proc/$pid ]; do
sleep 5
done