dev-db/drizzle/files/drizzle.init.d

   1 #!/sbin/runscript
   2 # Copyright 1999-2011 Pavel Stratil, senbonzakura.eu
   3 # Some functions were taken from debian init script. Licensed under GPL-2
   4 # Distributed under the terms of the GNU General Public License v2
   5 # $Id$
   6
   7 #########################
   8 ### Construct vars ######
   9 #########################
  10
  11
  12 SUFFIX=".${SVCNAME#*.}"
  13 [ "${SUFFIX}" == ".drizzled" ] && SUFFIX=''
  14
  15 BASE_CNF="/etc/drizzle/drizzled"
  16 BASE_PID="/var/run/drizzle/drizzled"
  17 BASE_LOG="/var/log/drizzle/drizzled"
  18 BASE_DIR="/var/lib/drizzle/drizzled"
  19
  20 PIDFILE="${BASE_PID}${SUFFIX}.pid"
  21 CNFFILE="${BASE_CNF}${SUFFIX}.cnf"
  22 LOGFILE="${BASE_LOG}${SUFFIX}.log"
  23 DATADIR="${BASE_DIR}${SUFFIX}"
  24 DRIZZLE="/usr/bin/drizzle"
  25 DRIZZLE_USER="drizzle"
  26 DRIZZLE_DAEMON="/usr/sbin/drizzled"
  27 DRIZZLE_EXTRA=""
  28
  29 #########################
  30 ### Helper functions ####
  31 #########################
  32
  33
  34 #
  35 # drizzle_status() checks if there is a server running and if it is accessible.
  36 # "check_alive" insists on a pingable server, "check_dead" also fails
  37 # if there is a lost drizzled in the process list
  38 # Usage: boolean drizzle_status [check_alive|check_dead] [warn|nowarn]
  39 #
  40 drizzle_status() {
  41         ping_output=`$DRIZZLE --ping 2>&1`; ping_alive=$(( ! $? ))
  42         ps_alive=0
  43         if [ -f "$PIDFILE" ] && ps `cat $PIDFILE` >/dev/null 2>&1; then ps_alive=1; fi
  44
  45         if [ "$1" = "check_alive"  -a  $ping_alive = 1 ] ||
  46            [ "$1" = "check_dead"   -a  $ping_alive = 0  -a  $ps_alive = 0 ]; then
  47            return 0 # EXIT_SUCCESS
  48         else
  49         if [ "$2" = "warn" ]; then
  50                 echo -e "$ps_alive processes alive and '$DRIZZLE --ping' resulted in\n$ping_output\n"
  51         fi
  52         return 1 # EXIT_FAILURE
  53         fi
  54 }
  55
  56 #########################
  57 ### Main ################
  58 #########################
  59
  60 checkconfig() {
  61         # TODO: --print-defaults no longer a valid option. Needs to be rewritten.
  62         #CNFDATADIR=`drizzle_get_param datadir`
  63                 #if [ -z "${CNFDATADIR}" ] ; then
  64         #   ewarn "Datadir not set in ${CNFFILE}."
  65         #   ewarn "Trying to use ${DATADIR}"
  66         #else
  67            DATADIR="${CNFDATADIR}"
  68         #fi
  69
  70         if [[ ! -d "${DATADIR}" ]] ; then
  71                 eerror "Drizzle datadir is empty or invalid."
  72                 eerror "Please check your configuration ${CNFFILE} and DRIZZLE_EXTRA"
  73                 return 1
  74         fi
  75
  76         if [ ! -f "${CNFFILE}" ]; then
  77                 eerror "The configuration file $CNFFILE was not found!"
  78         fi
  79 }
  80
  81 depend() {
  82         use localmount
  83         use gearmand
  84         use memcached
  85
  86         # TODO use drizzle_get_param() to decide if gearmand and memcached
  87         #      are needed. Then the useflag based sed-ing of this script
  88         #      can be removed from the ebuild.
  89 }
  90
  91
  92 stop() {
  93         ebegin "Stopping ${SVCNAME}"
  94         start-stop-daemon --pidfile ${PIDFILE} --stop \
  95                 --exec ${DRIZZLE_DAEMON}
  96         eend $?
  97         drizzle_status check_dead warn
  98 }
  99
 100 start() {
 101         #checkconfig
 102         ebegin "Starting ${SVCNAME}"
 103         # Test if ${BASE_PID}, ${BASE_LOG} and ${LOG_FILE} exist, create if not.
 104         [ ! -e ${BASE_PID} ] && mkdir -p ${BASE_PID} && chown ${DRIZZLE_USER}:nogroup ${BASE_PID}
 105         [ ! -e ${BASE_LOG} ] && mkdir -p ${BASE_LOG} && chown ${DRIZZLE_USER}:nogroup ${BASE_LOG}
 106         [ ! -e ${LOGFILE} ]  && touch ${LOGFILE} && chown ${DRIZZLE_USER}:nogroup ${LOGFILE}
 107         start-stop-daemon --background --pidfile ${PIDFILE} --stderr ${LOGFILE} \
 108                 --user ${DRIZZLE_USER} --start --exec ${DRIZZLE_DAEMON} -- \
 109                 --datadir=${DATADIR} --pid-file=${PIDFILE} --user=${DRIZZLE_USER} \
 110                 ${DRIZZLE_EXTRA}
 111         eend $?
 112
 113                 # TODO in order to have replication always working we should add the
 114                 #      --server-id=# option. AFAIK only integers are allowed, though
 115                 #      ${HOSTNAME}${SVCNAME}${SUFFIX} whould be much easier to handle.
 116
 117         for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14; do
 118                 sleep 1
 119                 if drizzle_status check_alive nowarn ; then break ; fi
 120         done
 121         if drizzle_status check_alive warn ; then
 122                 einfo "${SVCNAME} is alive!"
 123         else
 124                 eerror "${SVCNAME} died!"
 125         fi
 126 }
 127
 128 status() {
 129         if drizzle_status check_alive nowarn; then
 130                 einfo "status: started"
 131         else
 132                 einfo "status: stopped"
 133         fi
 134 }