games/minecraft-server: Add support for running as a service

PR:		197387
Submitted by:	maintainer (Jonathan Price)

games/minecraft-server/Makefile

@@ -2,6 +2,7 @@
 
 PORTNAME=	minecraft-server
 PORTVERSION=	1.8.1
+PORTREVISION=	1
 CATEGORIES=	games java
 MASTER_SITES=	https://s3.amazonaws.com/Minecraft.Download/versions/${PORTVERSION}/
 DISTNAME=	minecraft_server.${PORTVERSION}.jar
@@ -11,6 +12,10 @@ EXTRACT_ONLY=
 MAINTAINER=	freebsd@jonathanprice.org
 COMMENT=	Dedicated server for the game Minecraft
 
+OPTIONS_DEFINE=	DAEMON
+DAEMON_DESC=	Allows controlling via rc.d
+OPTIONS_SUB=	yes
+
 USERS=		mcserver
 GROUPS=		${USERS}
 
@@ -27,6 +32,13 @@ CONFIG_FILES=	banned-ips.json \
 		usercache.json \
 		whitelist.json
 
+.include <bsd.port.options.mk>
+
+.if ${PORT_OPTIONS:MDAEMON}
+USE_RC_SUBR+=	minecraft
+RUN_DEPENDS+=	tmux:${PORTSDIR}/sysutils/tmux
+.endif
+
 do-install:
 	${MKDIR} ${STAGEDIR}${PREFIX}/${PORTNAME}
 	${INSTALL_DATA} ${DISTDIR}/${DISTNAME} ${STAGEDIR}${PREFIX}/${PORTNAME}

games/minecraft-server/files/minecraft.in

@@ -0,0 +1,91 @@
+#!/bin/sh
+#
+# $FreeBSD$
+# PROVIDE: minecraft
+# REQUIRE: LOGIN
+# KEYWORD: shutdown
+#
+# rc.conf variables:
+# minecraft_enable (Default: NO)
+# minecraft_mem (Default: 1024M)
+# minecraft_args (Default: "")
+. /etc/rc.subr
+
+name=minecraft
+rcvar=minecraft_enable
+desc="Dedicated server for the game Minecraft"
+
+load_rc_config $name
+
+minecraft_mem=${minecraft_mem:-"1024M"}
+minecraft_args=${minecraft_args:-""}
+
+extra_commands="console status"
+start_cmd="${name}_start"
+stop_cmd="${name}_stop"
+console_cmd="${name}_console"
+status_cmd="${name}_status"
+
+minecraft_start()
+{
+	pgrep -qu mcserver java
+	isrunning=$?
+	if [ ${isrunning} -eq 0 ]; then
+		echo "${name} already running."
+	else
+		echo "Starting ${name}."
+		cd %%PREFIX%%/minecraft-server
+		su mcserver -c "%%LOCALBASE%%/bin/tmux new-session -s minecraft -d '%%LOCALBASE%%/bin/java -Xmx${minecraft_mem} -Xms${minecraft_mem} ${minecraft_args} -jar %%PREFIX%%/minecraft-server/minecraft_server.1.8.1.jar nogui'"
+	fi
+}
+
+minecraft_stop()
+{
+	pgrep -qu mcserver java
+	isrunning=$?
+	if [ ${isrunning} -eq 0 ]; then
+		echo "Stopping ${name}."
+		su mcserver -c "%%LOCALBASE%%/bin/tmux send-keys -t ${name} \"stop\" ENTER"
+
+		i=0
+		while [ $i -lt 10 ]; do
+			i=$(($i + 1))
+			pgrep -qu mcserver java
+			stillrunning=$?
+			if [ ${stillrunning} -eq 0 ]; then
+				sleep 1
+			else
+				echo "${name} stopped."
+				return
+			fi
+		done
+		echo "ERROR: ${name} could not be stopped."
+	else
+		echo "${name} not running."
+	fi
+}
+
+minecraft_console()
+{
+	pgrep -qu mcserver java
+	isrunning=$?
+	if [ ${isrunning} -ne 0 ]; then
+		echo "${name} not running."
+	else
+		export TERM=xterm
+		su mcserver -c "%%LOCALBASE%%/bin/tmux attach-session -t ${name}"
+	fi
+}
+
+minecraft_status()
+{
+	pgrep -qu mcserver java
+	isrunning=$?
+	if [ ${isrunning} -eq 0 ]; then
+		echo "${name} is running."
+	else
+		echo "${name} is not running."
+	fi
+}
+
+run_rc_command "$1"

games/minecraft-server/files/pkg-message.in

@@ -1,16 +1,22 @@
 When you first run minecraft-server, it will populate the file
 %%ETCDIR%%/eula.txt
 
-It is required to read the EULA, and then set:
-eula=true
+It is required to read the EULA, and then set eula=true
 
-- To run the server, run %%PREFIX%%/bin/minecraft-server
 - Configuration files can be found at %%ETCDIR%%
 - Log and debug output files can be found at /var/log/minecraft-server/
 - World files can be found at /var/db/minecraft-server
+
+Without daemon option:
+- To run the server, run %%PREFIX%%/bin/minecraft-server
 - To edit java's parameters, edit %%ETCDIR%%/java-args.txt
 
-NOTE:
+With daemon option:
+- The service has been installed with the name 'minecraft'
+- To adjust memory usage, use MINECRAFT_MEM= in /etc/rc.conf
+- To add other java parameters, use MINECRAFT_ARGS= in /etc/rc.conf
+- To see the interactive console, type service minecraft console
+
 Users upgrading from version < 1.8 are advised to run the server to
 generate new config files, and then modify them based on their existing
 configuration, as most files are now JSON instead of txt.