cert-nginx.init

#!/bin/bash
# description: cert-nginx

script_name=`basename $0`
script_abs_name=`readlink -f $0`
script_path=`dirname $script_abs_name`

# get nginx
which nginx >/dev/null
if [ $? -ne 0 ]
then
    echo "nginx not installed"
    exit 1
fi

desc=cert-nginx
prog=nginx
pid_file=${script_path}/work/${desc}.pid
work_dir=${script_path}/work/
config_file=${script_path}/cert-nginx.conf
args="-c ${config_file} -p $work_dir"
wait_tick=0.1
wait_tick_count=50

usage()
{
    printf "usage: $script_name [start|stop|restart|status]\n"
    exit 1
}

show_error()
{
    local message=$1
    printf "\033[;31m%s\033[0m\n" "$message"
}

show_success()
{
    local message=$1
    printf "\033[;32m%s\033[0m\n" "$message"
}

do_start()
{
    local i

    printf "[starting $desc]"

    pid=`cat $pid_file 2>/dev/null`
    if [ $? -eq 0 ]
    then
        kill -0 $pid 2>/dev/null
        if [ $? -eq 0 ]
        then
            show_error '[already started]'
            return 1
        fi
    fi

    $prog $args #2>/dev/null

    for (( i = 0; i < $wait_tick_count; ++i ))
    do
        pid=`cat $pid_file 2>/dev/null`
        if [ $? -eq 0 ]
        then
            kill -0 $pid 2>/dev/null
            if [ $? -eq 0 ]
            then
                show_success '[success]'
                return 0
            fi
        fi
        sleep $wait_tick
    done

    show_error '[failed]'
    return 1
}

do_stop()
{
    local i

    printf "[stopping $desc]"

    pid=`cat $pid_file 2>/dev/null`
    if [ $? -ne 0 ]
    then
        show_error '[not started]'
        return 1
    fi

    kill -0 $pid 2>/dev/null
    if [ $? -ne 0 ]
    then
        show_error '[not started]'
        return 1
    fi

    kill $pid

    for (( i = 0; i < $wait_tick_count; ++i ))
    do
        kill -0 $pid 2>/dev/null
        if [ $? -ne 0 ]
        then
            show_success '[success]'
            return 0
        fi
        sleep $wait_tick
    done

    show_error '[failed]'
    return 1
}

do_status()
{
    printf "[$desc]"

    pid=`cat $pid_file 2>/dev/null`
    if [ $? -ne 0 ]
    then
        show_error '[stopped]'
        return 0
    fi

    kill -0 $pid 2>/dev/null
    if [ $? -ne 0 ]
    then
        show_error '[stopped]'
    else
        show_success '[running]'
    fi

    return 0
}

if [ $# -ne 1 ]
then
    usage
fi

# check config file exist
if [ ! -f $config_file ]
then
    echo "config file: $config_file not found"
    exit 1
fi

case "$1" in
    start)
        do_start
        ;;
    stop)
        do_stop
        ;;
    restart)
        do_stop
        do_start
        ;;
    status)
        do_status
        ;;
    *)
        usage
        ;;
esac

exit 0