daemon_bash

#!/bin/sh

NAME_CACHE=$1

function cache_activate {


    RES=`touch /var/run/cache_activated`

    if [ $? -eq 0 ]; then
        RES=`varnishadm vcl.use $NAME_CACHE`

        if [ $? -eq 0 ]; then
            return 0;
        else
            return 1;
        fi
    else
        return 2;
    fi

    return 1;
}

function cache_deactivate {

    RES=`varnishadm vcl.use cache-home`

    if [ $? -eq 0 ]; then
        RES=`rm /var/run/cache_activated`

        if [ $? -eq 0]; then
            return 0;
        else
            return 1;
        fi;
    else
        return 1;
    fi

    return 1;
}


function email_activate {

## Do some email work
}

function email_deactivate {

## Do some email work
}


function check_long_time {

    BORN=`stat -c "%Z" /var/run/cache_activated`

    if [ $? -ne 0 ]; then
        return 0;
    fi

    CURRENT_DATE=`date +%s`

    AGE=`echo $(( $CURRENT_DATE - $BORN ))`

    if [ $AGE -gt 3600 ]; then
        return 0;
    fi

    return -1;
}

function start_check {

    while [ 1 ]; do

        check_long_time

        if [ $? -eq 0 ]; then
            email_deactivate
            cache_deactivate
            exit
        fi


        sleep 3
    done
}

cache_activate

if [ $? -eq 0 ]; then
    echo "Daemon start"
    email_activate
    start_check &
else
    echo "Something wrong use -x"
fi