boot.sh

#!/bin/bash

trap 'echo "[ERROR] Error in line $LINENO when executing: $BASH_COMMAND"' ERR
trap "pkill -P $$ || true; exit 1" SIGTERM SIGINT SIGHUP SIGQUIT

DB=/var/lib/collectd/rrd

source /etc/default/graphs1090

# autodetect and use /run/collectd as DB folder if it exists and has localhost
# folder having it automatically changed in /etc/default/graphs1090 causes
# issues for example when the user replaces his configuration with the default
# which is a valid approach
if [[ -d /run/collectd/localhost ]]; then
    DB=/run/collectd
fi

# fontconfig writes stuff to that directory for no good reason
# graphs1090 is mostly used on RPis, avoiding frequent disk writes is preferred
# if this fails, no big deal either.
if ! mount | grep -qs -e /var/cache/fontconfig &>/dev/null; then
    mount -o rw,nosuid,nodev,relatime,size=32000k,mode=755 -t tmpfs tmpfs /var/cache/fontconfig &>/dev/null || true
fi

# load bash sleep builtin if available
[[ -f /usr/lib/bash/sleep ]] && enable -f /usr/lib/bash/sleep sleep || true

function chk_enabled() {
    case "${1,,}" in
        1 | true | on | enabled | enable | yes | y | ok | always | set )
            return 0
        ;;
    esac
    return 1
}

IHTML=/usr/share/graphs1090/html/index.html
if [[ $colorscheme == "dark" ]]; then
    sed -i -e 's/href="bootstrap.custom..*.css"/href="bootstrap.custom.dark.css"/' "$IHTML"
else
    sed -i -e 's/href="bootstrap.custom..*.css"/href="bootstrap.custom.light.css"/' "$IHTML"
fi

if [[ -n "$WWW_TITLE" ]]; then
    sed -i -e "s#<title>.*</title>#<title>${WWW_TITLE}</title>#" "$IHTML"
fi
if [[ -n "$WWW_HEADER" ]]; then
    sed -i -e "s#<h1>.*</h1>#<h1>${WWW_HEADER}</h1>#" "$IHTML"
fi

function checkrrd() {
    if [[ -f "/var/lib/collectd/rrd/localhost/dump1090-localhost/$1" ]] \
        || [[ -f "/var/lib/collectd/rrd/localhost/dump1090-localhost/$1.gz" ]] \
        || [[ -f "/run/collectd/localhost/dump1090-localhost/$1" ]]
    then
        return 0
    else
        return 1
    fi
}
function show() {
    if grep -qs -e 'style="display:none"> <!-- '$1' -->' "$IHTML"; then
        sed -i -e 's/ style="display:none"> <!-- '$1' -->/> <!-- '$1' -->/' "$IHTML"
    fi
}
function hide() {
    if ! grep -qs -e 'style="display:none"> <!-- '$1' -->' "$IHTML"; then
        sed -i -e 's/> <!-- '$1' -->/ style="display:none"> <!-- '$1' -->/' "$IHTML"
    fi
}
function show_hide() {
    if checkrrd "$1"; then
        show "$2"
    else
        hide "$2"
    fi
}
show_hide dump1090_messages-messages_978.rrd dump978
show_hide airspy_rssi-max.rrd airspy
show_hide dump1090_misc-gain_db.rrd dump1090-misc


if ! chk_enabled "$HIDE_SYSTEM"; then
    show system
else
    hide system
fi

if [[ $all_large == "yes" ]]; then
    if grep -qs -e 'flex: 50%; // all_large' /usr/share/graphs1090/html/portal.css; then
        sed -i -e 's?flex: 50%; // all_large?flex: 100%; // all_large?' /usr/share/graphs1090/html/portal.css
        sed -i -e 's?display: flex; // all_large2?display: inline; // all_large2?' /usr/share/graphs1090/html/portal.css
    fi
else
    if ! grep -qs -e 'flex: 50%; // all_large' /usr/share/graphs1090/html/portal.css; then
        sed -i -e 's?flex: 100%; // all_large?flex: 50%; // all_large?' /usr/share/graphs1090/html/portal.css
        sed -i -e 's?display: inline; // all_large2?display: flex; // all_large2?' /usr/share/graphs1090/html/portal.css
    fi
fi

if [[ $1 == "nographs" ]]; then
	exit 0
fi

# disable this for the moment
#if rrdtool info /var/lib/collectd/rrd/localhost/system_stats/memory-used.rrd | grep -qs 'MIN'; then
	#cp -T -r -n /var/lib/collectd/rrd/localhost /var/lib/collectd/rrd/rme_rra_backup
	#/usr/share/graphs1090/rem_rra.sh /var/lib/collectd/rrd/localhost/
#fi

for i in {1..30}; do
    if [[ -f $DB/localhost/dump1090-localhost/dump1090_dbfs-NaN.rrd ]]; then break; fi
    if (( i == 5 )); then
        echo Waiting at most another 25 seconds for database directory / collectd to start.
    fi
    sleep 1
done

echo "Generating all graphs"

for i in 24h 8h 2h 48h 7d 14d 30d 90d 180d 365d 730d 1095d 1825d 3650d
do
	/usr/share/graphs1090/graphs1090.sh $i $1 &>/dev/null &
    if ! wait; then
        echo "boot.sh(graphs1090): early exit"
        exit 0
    fi
done

echo "Done with initial graph generation"