#!/bin/sh
#
# Simple Redis init.d script conceived to work on Linux systems
# as it does use of the /proc filesystem.

REDISPORT={{ port }}
EXEC=/usr/local/bin/redis-server
CLIEXEC=/usr/local/bin/redis-cli

PIDFILE=/var/run/redis_{{ instance }}${REDISPORT}.pid
CONF="/etc/redis/{{ instance }}-{{ shard }}.${REDISPORT}.conf"

start() {
    if [ -f $PIDFILE ]
        then
                echo "$PIDFILE exists, process is already running or crashed"
        else
                echo "Starting Redis server..."
                $EXEC $CONF
        fi
}

stop() {
    if [ ! -f $PIDFILE ]
        then
                echo "$PIDFILE does not exist, process is not running"
        else
                PID=$(cat $PIDFILE)
                echo "Stopping ..."
                $CLIEXEC -p $REDISPORT shutdown
                while [ -x /proc/${PID} ]
                do
                    echo "Waiting for Redis to shutdown ..."
                    sleep 1
                done
                echo "Redis stopped"
        fi
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        stop
        start
        ;;
    force-reinit)
        stop
        rm -f /opt/redis/ppc-${REDISPORT}/dump-${REDISPORT}.rdb
        rm -f /opt/redis/ppc-${REDISPORT}/nodes-{{ instance }}${REDISPORT}.conf
        start
        ;;
    *)
        echo "Please use start or stop as first argument"
        ;;
esac
