A Debian init script for uWSGI

gistfile1.sh

#!/usr/bin/env bash

### BEGIN INIT INFO
# Provides:          uwsgi
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the uwsgi app server
# Description:       starts uwsgi app server using start-stop-daemon
### END INIT INFO
set -e

. /lib/lsb/init-functions

PATH=/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/opt/uwsgi/bin/uwsgi
RUN=/var/run/uwsgi
ENABLED_CONFIGS_DIR=/srv/*/*/uwsgi.*
USER=deploy
GROUP=www-data
NAME=uwsgi
DESC=uWSGI
VERSION=$NAME
OP=$1

[[ -x $DAEMON ]] || exit 0
[[ -d $RUN ]] || mkdir $RUN && chown $USER $RUN


DAEMON_OPTS=""

# Include uwsgi defaults if available
if [[ -f /etc/default/$VERSION ]]; then
    . /etc/default/$VERSION
fi

do_pid_check()
{
    local PIDFILE=$1
    [[ -f $PIDFILE ]] || return 0
    local PID=$(cat $PIDFILE)
    for p in $(pgrep $VERSION); do
        [[ $p == $PID ]] && return 1
    done
    return 0
}


do_start()
{
    local PIDFILE=$RUN/$VERSION.pid
    local START_OPTS=" \
        --pidfile $PIDFILE \
	--daemonize /var/log/$NAME \
	--emperor-tyrant \
	--enable-threads \
        "
    if do_pid_check $PIDFILE; then
        $DAEMON $DAEMON_OPTS $START_OPTS --emperor "$ENABLED_CONFIGS_DIR" --emperor "/opt/uwsgi/etc/uwsgi.d/*.ini"
    else
        echo "Already running!"
    fi
}

send_sig()
{
    local PIDFILE=$RUN/$VERSION.pid
    set +e
    [[ -f $PIDFILE ]] && kill $1 $(cat $PIDFILE) > /dev/null 2>&1
    set -e
}

wait_and_clean_pidfile()
{
    local PIDFILE=$RUN/$VERSION.pid
    until do_pid_check $PIDFILE; do
        echo -n "";
    done
    rm -f $PIDFILE
}

do_stop()
{
    send_sig -3
    wait_and_clean_pidfile
}

do_reload()
{
    send_sig -1
}

do_force_reload()
{
    send_sig -15
}

get_status()
{
    send_sig -10
}


case "$OP" in
    start)
        log_daemon_msg "Starting $DESC" "$NAME"
        do_start
	log_end_msg $?
        ;;
    stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
	log_end_msg $?
        ;;
    reload)
        log_daemon_msg "Reloading $DESC" "$NAME"
        do_reload
	log_end_msg $?
        ;;
    force-reload)
        log_daemon_msg "Force-reloading $DESC" "$NAME"
        do_reload
        do_force_reload
	log_end_msg $?
       ;;
    restart)
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        sleep 1
        do_start
	log_end_msg $?
        ;;
    status)
        get_status
        ;;
    *)
        N=/etc/init.d/$NAME
        echo "Usage: $N {start|stop|restart|reload|force-reload|status"
            "|enable|disable}">&2
        exit 1
        ;;
esac
exit 0