cassandra_reaper

#!/bin/sh
### BEGIN INIT INFO
# Provides:          cassandra-reaper
# Required-Start:    $remote_fs $network
# Required-Stop:     $remote_fs $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: cassandra-reaper daemon
# Description:       This is a daemon that controls the cassandra-reaper
### END INIT INFO

# Author: Michal Lowicki <mlowicki@opera.com>

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="cassandra-reaper daemon"
NAME=cassandra-reaper
SCRIPTNAME=/etc/init.d/$NAME
DODTIME=5                   # Time to wait for the server to die, in seconds
                            # If this value is set too low you might not
                            # let some servers to die gracefully and
                            # 'restart' will not work
PIDFILE=/var/run/$NAME/$NAME.pid
REAPER_HOME=/var/cassandra_reaper
JAR="${REAPER_HOME}/cassandra-reaper.jar"


# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

. /lib/init/vars.sh
. /lib/lsb/init-functions

do_start() {
    # Return
    #   0 if daemon has been started
    #   1 if daemon was already running
    #   2 if daemon could not be started

    [ -e `dirname "$PIDFILE"` ] || \
        install -d -m755 `dirname $PIDFILE`

    start-stop-daemon -S -p "$PIDFILE" -t --quiet \
    --exec /usr/bin/java -- -jar "$JAR" server /etc/cassandra_reaper.yaml || return 1

    start-stop-daemon -S -b --make-pidfile -p "$PIDFILE" --quiet \
        --exec /usr/bin/java -- -jar "$JAR" server /etc/cassandra_reaper.yaml || return 2
}

do_stop() {
    # Return
    #   0 if daemon has been stopped
    #   1 if daemon was already stopped
    #   2 if daemon could not be stopped
    #   other if a failure occurred
    start-stop-daemon -K -p "$PIDFILE" -R TERM/30/KILL/5 >/dev/null
    RET=$?
    rm -f "$PIDFILE"
    return $RET
}

case "$1" in
    start)
        [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC"
        do_start
        case "$?" in
            0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
              2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
    stop)
        [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        case "$?" in
            0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
              2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
    restart|force-reload)
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        case "$?" in
          0|1)
          [ -n "$DODTIME" ] && sleep $DODTIME
              do_start
              case "$?" in
                  0) log_end_msg 0 ;;
                  1) log_end_msg 1 ;; # Old process is still running
                  *) log_end_msg 1 ;; # Failed to start
              esac
              ;;
          *)
              # Failed to stop
              log_end_msg 1
              ;;
        esac
        ;;
    status)
        status_of_proc -p $PIDFILE "" "$DESC"
        exit $?
        ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
        exit 3
        ;;
esac

exit 0