System support for RedHat

This commit is adding init.d script and sysconfig file which allows to
run GitBucket in the standalone mode. It also adds the spec file which
allows to build RPM package.

contrib/redhat/gitbucket.init

@@ -0,0 +1,102 @@
+#!/bin/bash
+#
+# /etc/rc.d/init.d/gitbucket
+#
+# Starts the GitBucket server
+#
+# chkconfig: 345 60 40
+# description: Run GitBucket server
+# processname: java
+
+# Source function library
+. /etc/rc.d/init.d/functions
+
+# Default values
+GITBUCKET_PORT=8080
+GITBUCKET_HOME=/var/lib/gitbucket
+GITBUCKET_WAR_FILE=/usr/share/gitbucket/lib/gitbucket.war
+
+# Pull in cq settings
+[ -f /etc/sysconfig/gitbucket ] && . /etc/sysconfig/gitbucket
+
+# Location of the log and PID file
+LOG_FILE=/var/log/gitbucket/run.log
+PID_FILE=/var/run/gitbucket.pid
+
+# Default return value
+RETVAL=0
+
+
+start() {
+	echo -n $"Starting GitBucket server: "
+
+	# Compile statup parameters
+	START_OPTS="--port=${GITBUCKET_PORT}"
+	if [ $GITBUCKET_PREFIX ]; then
+		START_OPTS="${START_OPTS} --prefix ${GITBUCKET_PREFIX}"
+	fi
+
+	# Run the Java process
+	GITBUCKET_HOME="${GITBUCKET_HOME}" java $GITBUCKET_JVM_OPTS -jar $GITBUCKET_WAR_FILE $START_OPTS >>$LOG_FILE 2>&1 &
+	RETVAL=$?
+
+	# Store PID of the Java process into a file
+	echo $! > $PID_FILE
+
+	if [ $RETVAL -eq 0 ] ; then
+		success "GitBucket startup"
+	else
+		failure "GitBucket startup"
+	fi
+
+	echo
+	return $RETVAL
+}
+
+
+stop() {
+	echo -n $"Stopping GitBucket server: "
+
+	# Run the Java process
+	kill $(cat $PID_FILE 2>/dev/null) >>$LOG_FILE 2>&1
+	RETVAL=$?
+
+	if [ $RETVAL -eq 0 ] ; then
+		rm -f $PID_FILE
+		success "GitBucket stopping"
+	else
+		failure "GitBucket stopping"
+	fi
+
+	echo
+	return $RETVAL
+}
+
+
+restart() {
+	stop
+	start
+}
+
+
+case "$1" in
+start)
+	start
+	;;
+stop)
+	stop
+	;;
+restart)
+	restart
+	;;
+status)
+	status -p $PID_FILE java
+	RETVAL=$?
+	;;
+*)
+	echo $"Usage: $0 [start|stop|restart|status]"
+	RETVAL=2
+esac
+
+
+exit $RETVAL