mirror of https://github.com/nicolargo/glances.git
Refactoring in the script to comply Debian policy (Thk to https://github.com/mxjeff)
This commit is contained in:
Nicolas Hennion
parent
eb114ffa2f
commit
664f603b49
160
docs/init_script
160
docs/init_script
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@ -1,25 +1,24 @@
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#! /bin/sh
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### BEGIN INIT INFO
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# Provides: glances
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# Required-Start: networking
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# Required-Stop: networking
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# Required-Start: $remote_fs $local_fs $network
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# Required-Stop: $remote_fs $local_fs $network
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Start and stop the Glance server
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# Short-Description: Starts and daemonize Glances server
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# Description: Starts and daemonize Glances server
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### END INIT INFO
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# Author: beudbeud@beudibox.fr
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set -e
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# PATH should only include /usr/* if it runs after the mountnfs.sh script
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PATH=/sbin:/usr/sbin:/bin:/usr/bin
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DESC="Glances server"
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NAME=glances
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DAEMON=/usr/bin/$NAME
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DAEMON_ARGS=""
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PIDFILE=/var/run/$NAME.pid
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SCRIPTNAME=/etc/init.d/$NAME
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USER=$NAME
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DAEMON="/usr/bin/$NAME"
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PIDFILE="/run/$NAME/$NAME.pid"
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CONF="/etc/glances/glances.conf"
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DAEMON_ARGS="-C $CONF -s"
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# Exit if the package is not installed
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[ -x "$DAEMON" ] || exit 0
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@ -30,62 +29,103 @@ SCRIPTNAME=/etc/init.d/$NAME
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# Load the VERBOSE setting and other rcS variables
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. /lib/init/vars.sh
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# Define LSB log_* functions.
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# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
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# and status_of_proc is working.
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. /lib/lsb/init-functions
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case $1 in
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start)
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if [ -e $PIDFILE ]; then
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log_daemon_msg "$NAME process was already running"
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log_end_msg 1
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else
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# Start the daemon.
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log_daemon_msg "Starting the process" "$NAME"
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# Start the daemon with the help of start-stop-daemon
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# Log the message appropriately
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if start-stop-daemon --start --quiet --oknodo --pidfile $PIDFILE -b -m --exec $DAEMON -- -s $DAEMON_ARGS; then
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log_end_msg 0
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else
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log_end_msg 1
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fi
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fi
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;;
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# Ensure /run/glances is there, cf. Debian policy 9.4.1
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# http://www.debian.org/doc/debian-policy/ch-opersys.html#s-fhs-run
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if [ ! -d "$(dirname $PIDFILE)" ]; then
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mkdir "$(dirname $PIDFILE)"
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chown $USER:$USER "$(dirname $PIDFILE)"
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chmod 755 "$(dirname $PIDFILE)"
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fi
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stop)
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# Stop the daemon.
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if [ -e $PIDFILE ]; then
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status_of_proc -p $PIDFILE $DAEMON "Stoppping the $NAME process" && status="0" || status="$?"
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if [ "$status" = 0 ]; then
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start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
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/bin/rm -rf $PIDFILE
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fi
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else
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log_daemon_msg "Glances process was already stopped"
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log_end_msg 1
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fi
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;;
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#
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# Function that starts the daemon/service
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#
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do_start()
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{
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log_daemon_msg "Starting $DESC" "$NAME "
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# Return
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# 0 if daemon has been started
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# 1 if daemon was already running
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# 2 if daemon could not be started
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[ -e $PIDFILE ] && PID=$(cat "$PIDFILE")
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if ( [ -e $PIDFILE ] && ps -p $PID 1>&2 > /dev/null )
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then
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log_action_end_msg 1 "already running, PID's $PID"
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exit 0
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elif ( [ -w $PIDFILE ] )
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then
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log_warning_msg "PID file found while ${NAME} is not running, removing file."
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rm $PIDFILE
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fi
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restart|reload)
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# Restart the daemon.
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$0 stop && sleep 2 && $0 start
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;;
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if [ "$RUN" != "true" ]; then
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log_action_msg "Not starting glances: disabled by /etc/default/$NAME".
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exit 0
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fi
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status)
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# Check the status of the process.
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if [ -e $PIDFILE ]; then
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status_of_proc -p $PIDFILE $DAEMON "$NAME process" && exit 0 || exit $?
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else
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log_daemon_msg "Glances process is not running"
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log_end_msg 1
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fi
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;;
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start-stop-daemon --start --chuid $USER --pidfile=$PIDFILE --quiet -m -b --exec $DAEMON -- $DAEMON_ARGS || return 2
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[ -e "$PIDFILE" ] && chown $USER $PIDFILE
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return 0
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}
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*)
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# For invalid arguments, print the usage message.
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echo "Usage: $0 {start|stop|restart|reload|status}"
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exit 2
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;;
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esac
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#
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# Function that stops the daemon/service
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#
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do_stop()
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{
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log_daemon_msg "Stopping $DESC" "$NAME "
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if [ ! -w $PIDFILE ]
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then
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log_warning_msg "PID file not found"
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return 4
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fi
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start-stop-daemon --stop --oknodo --chuid $USER --pidfile=$PID --user=$USER --pidfile="$PIDFILE" --retry=30 || return 1
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/bin/rm -f $PIDFILE
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return 0
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}
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case "$1" in
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start)
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do_start
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case "$?" in
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0|1) log_end_msg 0 ;;
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2) log_end_msg 1 ;;
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esac
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;;
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stop)
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do_stop
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case "$?" in
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0) log_end_msg 0 ;;
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1) log_end_msg 1 ;;
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esac
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;;
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status)
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status_of_proc -p "$PIDFILE" "$DAEMON" "$NAME"
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;;
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restart|force-reload)
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do_stop
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case "$?" in
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0)
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log_end_msg 0
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do_start
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case "$?" in
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0) log_end_msg 0 ;;
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*) log_end_msg 1 ;; # Failed to start
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esac
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;;
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*)
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# Failed to stop
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log_end_msg 1
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;;
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esac
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;;
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*)
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echo "Usage: invoke-rc.d $NAME {start|stop|status|restart|force-reload}" >&2
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exit 3
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;;
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esac
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