add rcon support

nathanielc · Nov 9, 2017 · 611d8a2 · 611d8a2
1 parent 6b5b6e5
commit 611d8a2
Showing 1 changed file with 146 additions and 138 deletions.
diff --git a/src/minecraftctl.sh b/src/minecraftctl.sh
@@ -9,6 +9,12 @@ set -e
 # internally the container always listens on 25565
 PORT=${PORT-25565}
 
+RCON_PORT_ARG=''
+if [ -n "$RCON_PORT" ]; then
+    RCON_PORT_ARG="-p $RCON_PORT:25575"
+fi
+echo $RCON_PORT_ARG
+
 # Default max java heap size in MB
 MAXHEAP=${MAXHEAP-2048}
 
@@ -38,197 +44,199 @@ LEVEL=${LEVEL-world}
 TIMEOUT=${TIMEOUT-0}
 
 usage() {
-	echo "Usage: $0 [start|stop|restart|status|save|backup] <name>"
-	echo ""
-	echo "Name is a name for the container and the data dir"
-	exit 1
+    echo "Usage: $0 [start|stop|restart|status|save|backup] <name>"
+    echo ""
+    echo "Name is a name for the container and the data dir"
+    exit 1
 }
 
 # Check if container is running
 running() {
-	status="$($DOCKER inspect -f '{{.State.Status}}' "$name" 2>/dev/null)"
-	test running = "$status"
-	return $?
+    status="$($DOCKER inspect -f '{{.State.Status}}' "$name" 2>/dev/null)"
+    test running = "$status"
+    return $?
 }
 
 # Check if anyone is online
 is_anyone_online() {
-	player_count=$(game_command list "players online:" | sed -r 's/.*([[:digit:]]+)\/[[:digit:]]+ players online:.*/\1/')
-	test $player_count -ne 0
-	return $?
+    player_count=$(game_command list "players online:" | sed -r 's/.*([[:digit:]]+)\/[[:digit:]]+ players online:.*/\1/')
+    test $player_count -ne 0
+    return $?
 }
 
 # Start the minecraft docker container
 start() {
-	if running
-	then
-		echo "Server already running..."
-		exit 0
-	fi
-	stop_container
-
-	vol_mount="--volume=$DATA_DIR/$name:/data"
-	if $EPHEMERAL
-	then
-		vol_mount=""
-		echo "Ephemeral server, a restart will lose all world data"
-	fi
-
-	$DOCKER run -d -i \
-		--name "$name" \
-	 	$vol_mount \
-	 	-p $PORT:25565 \
-	 	-e "JVM_OPTS=-Xmx${MAXHEAP}M -Xms${MINHEAP}M -D${name} ${EXTRA_JVM_OPTS}" \
-	 	-e "EULA=$EULA" \
-	 	-e "VERSION=$VERSION" \
-	 	-e "DIFFICULTY=$DIFFICULTY" \
-	 	-e "WHITELIST=$WHITELIST" \
-	 	-e "OPS=$OPS" \
-	 	-e "ICON=$ICON" \
-	 	-e "MAX_PLAYERS=$MAX_PLAYERS" \
-	 	-e "MAX_WORLD_SIZE=$MAX_WORLD_SIZE" \
-	 	-e "ALLOW_NETHER=$ALLOW_NETHER" \
-	 	-e "ANNOUNCE_PLAYER_ACHIEVEMENTS=$ANNOUNCE_PLAYER_ACHIEVEMENTS" \
-	 	-e "ENABLE_COMMAND_BLOCK=$ENABLE_COMMAND_BLOCK" \
-	 	-e "FORCE_GAMEMODE=$FORCE_GAMEMODE" \
-	 	-e "GENERATE_STRUCTURES=$GENERATE_STRUCTURES" \
-	 	-e "HARDCORE=$HARDCORE" \
-	 	-e "MAX_BUILD_HEIGHT=$MAX_BUILD_HEIGHT" \
-	 	-e "MAX_TICK_TIME=$MAX_TICK_TIME" \
-	 	-e "SPAWN_MONSTERS=$SPAWN_MONSTERS" \
-	 	-e "SPAWN_NPCS=$SPAWN_NPCS" \
-	 	-e "VIEW_DISTANCE=$VIEW_DISTANCE" \
-	 	-e "SEED=$SEED" \
-	 	-e "MODE=$MODE" \
-	 	-e "MOTD=$MOTD" \
-	 	-e "PVP=$PVP" \
-	 	-e "LEVEL_TYPE=$LEVEL_TYPE" \
-	 	-e "GENERATOR_SETTINGS=$GENERATOR_SETTINGS" \
-	 	-e "LEVEL=$LEVEL" \
-	 	-e "WORLD=$WORLD" \
-	 	-e "UID=$MINECRAFT_UID" \
-	 	-e "GID=$MINECRAFT_GID" \
-	 	itzg/minecraft-server
-
-	echo "Started minecraft container $name"
+    if running
+    then
+        echo "Server already running..."
+        exit 0
+    fi
+    stop_container
+
+    vol_mount="--volume=$DATA_DIR/$name:/data"
+    if $EPHEMERAL
+    then
+        vol_mount=""
+        echo "Ephemeral server, a restart will lose all world data"
+    fi
+
+    $DOCKER run -d -i \
+        --name "$name" \
+        $vol_mount \
+        -p $PORT:25565 \
+        $RCON_PORT_ARG \
+        -e "JVM_OPTS=-Xmx${MAXHEAP}M -Xms${MINHEAP}M -D${name}" \
+        -e "JVM_XX_OPTS=${EXTRA_JVM_OPTS}" \
+        -e "EULA=$EULA" \
+        -e "VERSION=$VERSION" \
+        -e "DIFFICULTY=$DIFFICULTY" \
+        -e "WHITELIST=$WHITELIST" \
+        -e "OPS=$OPS" \
+        -e "ICON=$ICON" \
+        -e "MAX_PLAYERS=$MAX_PLAYERS" \
+        -e "MAX_WORLD_SIZE=$MAX_WORLD_SIZE" \
+        -e "ALLOW_NETHER=$ALLOW_NETHER" \
+        -e "ANNOUNCE_PLAYER_ACHIEVEMENTS=$ANNOUNCE_PLAYER_ACHIEVEMENTS" \
+        -e "ENABLE_COMMAND_BLOCK=$ENABLE_COMMAND_BLOCK" \
+        -e "FORCE_GAMEMODE=$FORCE_GAMEMODE" \
+        -e "GENERATE_STRUCTURES=$GENERATE_STRUCTURES" \
+        -e "HARDCORE=$HARDCORE" \
+        -e "MAX_BUILD_HEIGHT=$MAX_BUILD_HEIGHT" \
+        -e "MAX_TICK_TIME=$MAX_TICK_TIME" \
+        -e "SPAWN_MONSTERS=$SPAWN_MONSTERS" \
+        -e "SPAWN_NPCS=$SPAWN_NPCS" \
+        -e "VIEW_DISTANCE=$VIEW_DISTANCE" \
+        -e "SEED=$SEED" \
+        -e "MODE=$MODE" \
+        -e "MOTD=$MOTD" \
+        -e "PVP=$PVP" \
+        -e "LEVEL_TYPE=$LEVEL_TYPE" \
+        -e "GENERATOR_SETTINGS=$GENERATOR_SETTINGS" \
+        -e "LEVEL=$LEVEL" \
+        -e "WORLD=$WORLD" \
+        -e "UID=$MINECRAFT_UID" \
+        -e "GID=$MINECRAFT_GID" \
+        itzg/minecraft-server
+
+    echo "Started minecraft container $name"
 
 }
 
 # Send a command to the game server
 game_command() {
-	expected=$2
-	if [ -n "$expected" ]
-	then
-		# Start tailing log from end before we issue the command
-		timeout "$TIMEOUT" grep -m 1 "$expected" <($DOCKER logs -f --tail=0 $name) &
-	fi
-	# Issue command
-	echo "$1" | $DOCKER attach "$name"
-	# Wait for grep if any
-	wait
+    expected=$2
+    if [ -n "$expected" ]
+    then
+        # Start tailing log from end before we issue the command
+        timeout "$TIMEOUT" grep -m 1 "$expected" <($DOCKER logs -f --tail=0 $name) &
+    fi
+    # Issue command
+    echo "$1" | $DOCKER attach "$name"
+    # Wait for grep if any
+    wait
 }
 
 # Do a world save
 save() {
-	game_command "save-all flush" "Saved the world"
-	game_command "say Saved the world"
+    game_command "save-all flush" "Saved the world"
+    game_command "say Saved the world"
 }
 
 
 # Do a world backup
 backup() {
-	filename="$name-$(date +%Y_%m_%d_%H.%M.%S).tar.gz"
-
-	game_command "say Starting backup..."
-	# Make sure we always turn saves back on
-	set +e
-	ret=0
-	game_command "save-off"
-	ret=$(($ret + $?))
-	game_command "save-all flush" "Saved the world"
-	ret=$(($ret + $?))
-	sync
-	ret=$(($ret + $?))
-	$DOCKER exec -u minecraft "$name" mkdir -p "/data/$BACKUP_DIR"
-	ret=$(($ret + $?))
-	$DOCKER exec -u minecraft "$name" tar -C /data -czf "$BACKUP_DIR/$filename" "$LEVEL" server.properties
-	ret=$(($ret + $?))
-	game_command "save-on"
-	ret=$(($ret + $?))
-
-	game_command "say Backup finished"
-	exit $ret
+    filename="$name-$(date +%Y_%m_%d_%H.%M.%S).tar.gz"
+
+    game_command "say Starting backup..."
+    # Make sure we always turn saves back on
+    set +e
+    ret=0
+    game_command "save-off"
+    ret=$(($ret + $?))
+    game_command "save-all flush" "Saved the world"
+    ret=$(($ret + $?))
+    sync
+    ret=$(($ret + $?))
+    $DOCKER exec -u minecraft "$name" mkdir -p "/data/$BACKUP_DIR"
+    ret=$(($ret + $?))
+    $DOCKER exec -u minecraft "$name" tar -C /data -czf "$BACKUP_DIR/$filename" "$LEVEL" server.properties
+    ret=$(($ret + $?))
+    game_command "save-on"
+    ret=$(($ret + $?))
+
+    game_command "say Backup finished"
+    exit $ret
 }
 
 # Stop the server
 stop() {
-	if running
-	then
-		if is_anyone_online
-		then
-			game_command "save-all"
-			for i in {10..1}
-			do
-				game_command "say Server shutting down in ${i}s..."
-				sleep 1
-			done
-			game_command "say Shutting down..."
-		fi
-		game_command "stop"
-		# Wait for container to stop on its own now
-		$DOCKER wait "$name"
-	fi
-
-	stop_container
+    if running
+    then
+        if is_anyone_online
+        then
+            game_command "save-all"
+            for i in {10..1}
+            do
+                game_command "say Server shutting down in ${i}s..."
+                sleep 1
+            done
+            game_command "say Shutting down..."
+        fi
+        game_command "stop"
+        # Wait for container to stop on its own now
+        $DOCKER wait "$name"
+    fi
+
+    stop_container
 }
 
 # Stop the container
 stop_container() {
-	$DOCKER stop "$name" > /dev/null 2>&1 || true
-	$DOCKER rm "$name" > /dev/null 2>&1 || true
+    $DOCKER stop "$name" > /dev/null 2>&1 || true
+    $DOCKER rm "$name" > /dev/null 2>&1 || true
 }
 
 
 name=$2
 if [ -z "$name" ]
 then
-	usage
+    usage
 fi
 
 if [ -n "$DEBUG" ]
 then
-	set -x
+    set -x
 fi
 
 case "$1" in
 status)
-	if running
-	then
-		echo "Minecraft server $name is running"
-		exit 0
-	else
-		echo "Minecraft server $name is stopped"
-		exit 2
-	fi
-	;;
+    if running
+    then
+        echo "Minecraft server $name is running"
+        exit 0
+    else
+        echo "Minecraft server $name is stopped"
+        exit 2
+    fi
+    ;;
 start)
-	start
-	;;
+    start
+    ;;
 stop)
-	stop
-	;;
+    stop
+    ;;
 restart)
-	stop
-	start
-	;;
+    stop
+    start
+    ;;
 backup)
-	backup
-	;;
+    backup
+    ;;
 save)
-	save
-	;;
+    save
+    ;;
 *)
-	usage
-	;;
+    usage
+    ;;
 esac