tmarble/posts/Setting_Up_MediaGoblin/etc/init.d/mediagoblin-celeryd

   1 #!/bin/sh
   2 # /etc/init.d/mediagoblin-celeryd
   3 #
   4 ## LICENSE: CC0 <http://creativecommons.org/publicdomain/zero/1.0/>
   5 # To the extent possible under law, Joar Wandborg <http://wandborg.se> has
   6 # waived all copyright and related or neighboring rights to
   7 # mediagoblin-celeryd. This work is published from Sweden.
   8 #
   9 ## CREDIT
  10 # Credit goes to jpope <http://jpope.org/> and
  11 # chimo <http://chimo.chromic.org/>. From which' Arch init scripts this is
  12 # based upon.
  13 #
  14 ### BEGIN INIT INFO
  15 # Provides:          mediagoblin-celeryd
  16 # Required-Start:    $network $named $local_fs
  17 # Required-Stop:     $remote_fs $syslog $network $named $local_fs
  18 # Should-Start:      postgres $syslog
  19 # Default-Start:     2 3 4 5
  20 # Default-Stop:      0 1 6
  21 # Short-Description: MediaGoblin Celery task processor init script
  22 # Description:       This script will initiate the GNU MediaGoblin Celery
  23 #                    task processor
  24 ### END INIT INFO
  25
  26 ################################################################################
  27 # CHANGE THIS
  28 # to suit your environment
  29 ################################################################################
  30 MG_ROOT=/srv/mediagoblin
  31 ################################################################################
  32 # NOW STOP
  33 # You probably won't have to change anything else.
  34 ################################################################################
  35
  36 set -e
  37
  38 DAEMON_NAME=mediagoblin-celeryd
  39
  40 MG_USER=www-data
  41 MG_BIN=$MG_ROOT/bin
  42 MG_CELERYD_BIN=$MG_BIN/celeryd
  43 MG_CONFIG=$MG_ROOT/mediagoblin_local.ini
  44 MG_CELERY_CONFIG_MODULE=mediagoblin.init.celery.from_celery
  45 MG_CELERYD_PID_FILE=/var/run/mediagoblin/$DAEMON_NAME.pid
  46 MG_CELERYD_LOG_FILE=/var/log/mediagoblin/$DAEMON_NAME.log
  47
  48 set_up_directories() {
  49     install -o $MG_USER -g users -d -m 755 /var/log/mediagoblin
  50     install -o $MG_USER -g users -d -m 755 /var/run/mediagoblin
  51 }
  52
  53 set_up_directories
  54
  55 # Include LSB helper functions
  56 . /lib/lsb/init-functions
  57
  58 getPID() {
  59     # Discard any errors from cat
  60     cat $MG_CELERYD_PID_FILE 2>/dev/null
  61 }
  62
  63 case "$1" in
  64     start)
  65         # Start the MediaGoblin celeryd process
  66         log_daemon_msg "Starting GNU MediaGoblin Celery task queue" "$DAEMON_NAME"
  67         if [ -z "$(getPID)" ]; then
  68             su -s /bin/sh -c "cd $MG_ROOT && \
  69                 MEDIAGOBLIN_CONFIG=$MG_CONFIG \
  70                 CELERY_CONFIG_MODULE=$MG_CELERY_CONFIG_MODULE \
  71                 $MG_CELERYD_BIN \
  72                 --pidfile=$MG_CELERYD_PID_FILE \
  73                 -f $MG_CELERYD_LOG_FILE" \
  74                 - $MG_USER 2>&1 > /dev/null &
  75
  76             CELERYD_RESULT=$?
  77
  78             # Sleep for a while until we're kind of certain that celeryd has
  79             # had it's time to initialize
  80             TRIES=0
  81             while ! [ "X$CELERYD_RESULT" != "X" ]; do
  82                 log_action_msg "Tried $TRIES time(s)"
  83                 sleep 0.1
  84                 TRIES=$((TRIES+1))
  85             done
  86
  87             log_end_msg $CELERYD_RESULT
  88         else
  89             # Failed because the PID file indicates it's running
  90             log_action_msg "PID file $MG_CELERYD_PID_FILE already exists"
  91             log_end_msg 1
  92         fi
  93         ;;
  94     stop)
  95         log_daemon_msg "Stopping GNU MediaGoblin Celery task queue" "$DAEMON_NAME"
  96         if [ -z "$(getPID)" ]; then
  97             # Failed because the PID file indicates it's not running
  98             RET=1
  99         else
 100             kill $(getPID)
 101
 102             if [ $? -gt 0 ]; then
 103                 RET=1
 104             else
 105                 RET=0
 106             fi
 107         fi
 108         log_end_msg $RET
 109         ;;
 110     restart)
 111         $0 stop
 112         sleep 3
 113         $0 start
 114         ;;
 115     status)
 116         if ! [ -z "$(getPID)" ]; then
 117             echo "$DAEMON_NAME start/running, process $(getPID)"
 118         else
 119             echo "$DAEMON_NAME stopped."
 120         fi
 121         ;;
 122     *)
 123         echo "Usage: $0 {restart|start|stop|status}"
 124         exit 1
 125         ;;
 126 esac
 127
 128 exit 0