gentoo-overlay/dev-db/drizzle/files/drizzle.init.d.2

#!/sbin/runscript
# Copyright 1999-2012 Pavel Stratil, senbonzakura.eu
# Some functions were taken from debian init script. Licensed under GPL-2
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-db/drizzle/files/drizzle.init.d.2,v 1.2 2012/11/11 02:18:49 flameeyes Exp $

#########################
### Construct vars ######
#########################


SUFFIX=".${SVCNAME#*.}"
[ "${SUFFIX}" == ".drizzled" ] && SUFFIX=''

DIR_PID="/run/drizzle"
DIR_LOG="/var/log/drizzle"

BASE_CNF="/etc/drizzle/drizzled"
BASE_PID="${DIR_PID}/drizzled"
BASE_LOG="${DIR_LOG}/drizzled"
BASE_DIR="/var/lib/drizzle/drizzled"

CNFFILE="${BASE_CNF}${SUFFIX}.cnf"
LOGFILE="${BASE_LOG}${SUFFIX}.log"
DATADIR="${BASE_DIR}${SUFFIX}"
DRIZZLE="/usr/bin/drizzle"
DRIZZLE_USER="drizzle"

pidfile="${BASE_PID}${SUFFIX}.pid"
command="/usr/sbin/drizzled"
command_args="--daemon --datadir=${DATADIR} --pid-file=${pidfile} --user=${DRIZZLE_USER} --syslog.errmsg-enable ${DRIZZLE_EXTRA}"

start_stop_daemon_args="--user ${DRIZZLE_USER} --wait 5000"

#########################
### Helper functions ####
#########################


#
# drizzle_status() checks if there is a server running and if it is accessible.
# "check_alive" insists on a pingable server, "check_dead" also fails
# if there is a lost drizzled in the process list
# Usage: boolean drizzle_status [check_alive|check_dead] [warn|nowarn]
#
drizzle_status() {
	ping_output=`$DRIZZLE --ping 2>&1`; ping_alive=$(( ! $? ))
	ps_alive=0
	if [ -f "$pidfile" ] && ps `cat $pidfile` >/dev/null 2>&1; then ps_alive=1; fi

	if [ "$1" = "check_alive"  -a  $ping_alive = 1 ] ||
	   [ "$1" = "check_dead"   -a  $ping_alive = 0  -a  $ps_alive = 0 ]; then
	   return 0 # EXIT_SUCCESS
	else
	if [ "$2" = "warn" ]; then
		echo -e "$ps_alive processes alive and '$DRIZZLE --ping' resulted in\n$ping_output\n"
	fi
	return 1 # EXIT_FAILURE
	fi
}

#########################
### Main ################
#########################

checkconfig() {
	# TODO: --print-defaults no longer a valid option. Needs to be rewritten.
	#CNFDATADIR=`drizzle_get_param datadir`
		#if [ -z "${CNFDATADIR}" ] ; then
	#   ewarn "Datadir not set in ${CNFFILE}."
	#   ewarn "Trying to use ${DATADIR}"
	#else
	   DATADIR="${CNFDATADIR}"
	#fi

	if [[ ! -d "${DATADIR}" ]] ; then
		eerror "Drizzle datadir is empty or invalid."
		eerror "Please check your configuration ${CNFFILE} and DRIZZLE_EXTRA"
		return 1
	fi

	if [ ! -f "${CNFFILE}" ]; then
		eerror "The configuration file $CNFFILE was not found!"
	fi
}

depend() {
	use localmount
	use logger
	use gearmand
	use memcached

	# TODO use drizzle_get_param() to decide if gearmand and memcached
	#      are needed. Then the useflag based sed-ing of this script
	#      can be removed from the ebuild.
}

start_pre() {
    checkpath -d -o ${DRIZZLE_USER}:nogroup ${DIR_PID} ${DIR_LOG}
    checkpath -f -o ${DRIZZLE_USER}:nogroup ${LOGFILE}
}

start_post() {
    for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14; do
	sleep 1
	if drizzle_status check_alive nowarn ; then break ; fi
    done
    if drizzle_status check_alive warn ; then
	einfo "${SVCNAME} is alive!"
    else
	eerror "${SVCNAME} died!"
    fi
}

stop_post() {
	drizzle_status check_dead warn
}

status() {
    if drizzle_status check_alive nowarn; then
	mark_service_started drizzled
	einfo "status: started"
    else
	mark_service_stopped drizzled
	einfo "status: stopped"
    fi
}