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#!/bin/bash
# ============================================
# celeryd - Starts the Celery worker daemon.
# ============================================
#
# :Usage: /etc/init.d/celeryd {start|stop|force-reload|restart|try-restart|status}
#
# :Configuration file: /etc/default/celeryev | /etc/default/celeryd
#
# To configure celeryd you probably need to tell it where to chdir.
#
# EXAMPLE CONFIGURATION
# =====================
#
# this is an example configuration for a Python project:
#
# /etc/default/celeryd:
#
# # Where to chdir at start.
# CELERYD_CHDIR="/opt/Myproject/"
#
# # Extra arguments to celeryev
# CELERYEV_OPTS="-x"
#
# # Name of the celery config module.#
# CELERY_CONFIG_MODULE="celeryconfig"
#
# # Camera class to use (required)
# CELERYEV_CAM = "myapp.Camera"
#
# EXAMPLE DJANGO CONFIGURATION
# ============================
#
# # Where the Django project is.
# CELERYD_CHDIR="/opt/Project/"
#
# # Name of the projects settings module.
# export DJANGO_SETTINGS_MODULE="settings"
#
# # Path to celeryd
# CELERYEV="/opt/Project/manage.py"
#
# # Extra arguments to manage.py
# CELERYEV_OPTS="celeryev"
#
# # Camera class to use (required)
# CELERYEV_CAM="djcelery.snapshot.Camera"
#
# AVAILABLE OPTIONS
# =================
#
# * CELERYEV_OPTS
# Additional arguments to celeryd, see `celeryd --help` for a list.
#
# * CELERYD_CHDIR
# Path to chdir at start. Default is to stay in the current directory.
#
# * CELERYEV_PID_FILE
# Full path to the pidfile. Default is /var/run/celeryd.pid.
#
# * CELERYEV_LOG_FILE
# Full path to the celeryd logfile. Default is /var/log/celeryd.log
#
# * CELERYEV_LOG_LEVEL
# Log level to use for celeryd. Default is INFO.
#
# * CELERYEV
# Path to the celeryev program. Default is `celeryev`.
# You can point this to an virtualenv, or even use manage.py for django.
#
# * CELERYEV_USER
# User to run celeryev as. Default is current user.
#
# * CELERYEV_GROUP
# Group to run celeryev as. Default is current user.
#
# * VIRTUALENV
# Full path to the virtualenv environment to activate. Default is none.
### BEGIN INIT INFO
# Provides: celeryev
# Required-Start: $network $local_fs $remote_fs
# Required-Stop: $network $local_fs $remote_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: celery event snapshots
### END INIT INFO
# Cannot use set -e/bash -e since the kill -0 command will abort
# abnormally in the absence of a valid process ID.
#set -e
DEFAULT_PID_FILE="/var/run/celeryev.pid"
DEFAULT_LOG_FILE="/var/log/celeryev.log"
DEFAULT_LOG_LEVEL="INFO"
DEFAULT_CELERYEV="/usr/bin/celeryev"
if test -f /etc/default/celeryd; then
. /etc/default/celeryd
fi
if test -f /etc/default/celeryev; then
. /etc/default/celeryev
fi
CELERYEV=${CELERYEV:-$DEFAULT_CELERYEV}
CELERYEV_PID_FILE=${CELERYEV_PID_FILE:-${CELERYEV_PIDFILE:-$DEFAULT_PID_FILE}}
CELERYEV_LOG_FILE=${CELERYEV_LOG_FILE:-${CELERYEV_LOGFILE:-$DEFAULT_LOG_FILE}}
CELERYEV_LOG_LEVEL=${CELERYEV_LOG_LEVEL:-${CELERYEV_LOG_LEVEL:-$DEFAULT_LOG_LEVEL}}
export CELERY_LOADER
if [ -z "$CELERYEV_CAM" ]; then
echo "Missing CELERYEV_CAM variable" 1>&2
exit
fi
CELERYEV_OPTS="$CELERYEV_OPTS -f $CELERYEV_LOG_FILE -l $CELERYEV_LOG_LEVEL -c $CELERYEV_CAM"
if [ -n "$2" ]; then
CELERYEV_OPTS="$CELERYEV_OPTS $2"
fi
CELERYEV_LOG_DIR=`dirname $CELERYEV_LOG_FILE`
CELERYEV_PID_DIR=`dirname $CELERYEV_PID_FILE`
if [ ! -d "$CELERYEV_LOG_DIR" ]; then
mkdir -p $CELERYEV_LOG_DIR
fi
if [ ! -d "$CELERYEV_PID_DIR" ]; then
mkdir -p $CELERYEV_PID_DIR
fi
# Extra start-stop-daemon options, like user/group.
if [ -n "$CELERYEV_USER" ]; then
DAEMON_OPTS="$DAEMON_OPTS --uid $CELERYEV_USER"
chown "$CELERYEV_USER" $CELERYBEAT_LOG_DIR $CELERYEV_PID_DIR
fi
if [ -n "$CELERYEV_GROUP" ]; then
DAEMON_OPTS="$DAEMON_OPTS --gid $CELERYEV_GROUP"
chgrp "$CELERYEV_GROUP" $CELERYBEAT_LOG_DIR $CELERYEV_PID_DIR
fi
CELERYEV_CHDIR=${CELERYEV_CHDIR:-$CELERYD_CHDIR}
if [ -n "$CELERYEV_CHDIR" ]; then
DAEMON_OPTS="$DAEMON_OPTS --workdir $CELERYEV_CHDIR"
fi
export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"
check_dev_null() {
if [ ! -c /dev/null ]; then
echo "/dev/null is not a character device!"
exit 1
fi
}
wait_pid () {
pid=$1
forever=1
i=0
while [ $forever -gt 0 ]; do
kill -0 $pid 1>/dev/null 2>&1
if [ $? -eq 1 ]; then
echo "OK"
forever=0
else
kill -TERM "$pid"
i=$((i + 1))
if [ $i -gt 60 ]; then
echo "ERROR"
echo "Timed out while stopping (30s)"
forever=0
else
sleep 0.5
fi
fi
done
}
stop_evcam () {
echo -n "Stopping celeryev..."
if [ -f "$CELERYEV_PID_FILE" ]; then
wait_pid $(cat "$CELERYEV_PID_FILE")
else
echo "NOT RUNNING"
fi
}
start_evcam () {
echo "Starting celeryev..."
if [ -n "$VIRTUALENV" ]; then
source $VIRTUALENV/bin/activate
fi
$CELERYEV $CELERYEV_OPTS $DAEMON_OPTS --detach \
--pidfile="$CELERYEV_PID_FILE"
}
case "$1" in
start)
check_dev_null
start_evcam
;;
stop)
stop_evcam
;;
reload|force-reload)
echo "Use start+stop"
;;
restart)
echo "Restarting celery event snapshots" "celeryev"
stop_evcam
check_dev_null
start_evcam
;;
*)
echo "Usage: /etc/init.d/celeryev {start|stop|restart}"
exit 1
esac
exit 0
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