Script to start/stop/restart mbc-playout processes

malbec.sh

#/bin/bash

check_running_screen() {
    local command="screen -ls | grep $1"
    if [ -n "$(eval $command)" ]; then
        echo 1
    else
        echo 0
    fi
}

start_screen() {
    if [ $(check_running_screen $1) != 0 ]; then
        printf "Screen %s already started\n" "$1"
    else
        screen -d -m -S $1
        printf "Starting screen %s\n" "$1"
    fi
}

get_command() {
    case "$1" in
        caspa)
            echo "cd mbc-caspa && make MBC_SCRAPE=1 serve_noweb"
            ;;
        mosto)
            echo "killall -9 melted && cd mbc-mosto && make NODE_CONFIG_DIR=~/mbc-caspa/node_modules/mbc-common/config serve"
            ;;
        patero)
            echo "cd mbc-patero && python patero.py"
            ;;
        capture)
            echo "melt -producer decklink buffer=25 -consumer posixshm"
            ;;
        htop)
            echo "htop"
            ;;
        preview)
            echo "export DISPLAY=:1 && melt -producer posixshm:output.mlt -consumer avformat:http://localhost:8000/publish/mbc?password=malbec real_time=1 terminate_on_pause=0 f=webm vcodec=libvpx b=1000k s=720x570 acodec=libvorbis ab=128k g=0 me_method=zero flags2=fast preset=ultrafast tune=zerolatency crf=40 qmin=5 mlt_profile=dv_pal"
            ;;
        output)
            echo "export DISPLAY=:1 && melt -producer posixshm:output.mlt -consumer decklink:1 mlt_profile=dv_pal -filter webvfx:http://localhost:3100/filter"
            ;;
        etiquette)
            echo "cd mbc-etiquette && make NODE_CONFIG_DIR=~/mbc-caspa/node_modules/mbc-common/config serve_noweb"
            ;;
        stream)
            echo "cd stream-m && make"
            ;;
        melted)
            echo "melted -test"
            ;;
        melted2)
            echo " echo 'uadd posixshm:output.mlt' | nc localhost 5250 "
            ;;
        *)
            echo ""
            ;;
    esac
}

start_process() {
    local command=$(get_command $1)
    if [ -z "$command" ]; then
        printf "Process %s not found\n" "$1"
        exit 1
    fi
    start_screen $1
    local cmd="$command `echo -ne '\015'`"
    screen -S $1 -X stuff "cd ~ `echo -ne '\015'`"
    screen -S $1 -X stuff "$cmd"
    printf "Process %s started\n" "$1"
}

stop_process() {
    local command=$(get_command $1)
    if [ -z "$command" ]; then
        printf "Process %s not found\n" "$1"
        exit 1
    fi
    start_screen $1
    screen -S $1 -X stuff "^C"
    printf "Process %s stopped\n" "$1"
}

process=${2:-all}

if [ $process == "all" ]; then
    processes=(melted htop capture stream patero caspa mosto etiquette output preview)
else
    processes=($process)
fi
case "$1" in 
    start)
        for proc in ${processes[*]}
        do
            start_process $proc
            sleep 10
        done
        ;;
    stop)
        for (( idx=${#processes[@]}-1 ; idx>=0 ; idx-- )) ; 
        do
            stop_process ${processes[idx]}
        done
        ;;
    restart)
        for (( idx=${#processes[@]}-1 ; idx>=0 ; idx-- )) ; 
        do
            stop_process ${processes[idx]}
            sleep 10
        done
        for proc in ${processes[*]}
        do
            start_process $proc
            sleep 10
        done
        ;;
    *)
        echo $"Usage: $0 {start|stop|restart} [proc name]"
        exit 1
esac