Repository
Munin (master)
Last change
2017-04-22
Graph Categories
Family
auto
Capabilities
Language
Bash
License
GPL-2.0-only
Authors

squeezebox_

Name

squeezebox_ - plugin to monitor a SqueezeCenter and associated players.

Applicable Systems

Probably any system running SqueezeCenter. Change the host to allow for remote monitoring.

Configuration

No configuration should be required if run on the same server as SqueezeCenter. If the plugin is run from another unit or in a non-default configuration, please use the environment variables ‘squeezebox_host’ and ‘squeezebox_port’ to connect. Also, if your nc(1) binary is not called “nc”, or not the one in $PATH, please define it in the plugin’s environment file (/etc/munin/squeezebox or similar).

Sample follows:

[squeezebox_*]
 env.squeezebox_host 192.168.100.10
 env.squeezebox_port 9095
 env.netcat /usr/local/bin/nc

Interpretation

The “volume” graphs only graphs the player’s volume, not the amplifier or whatever the player is connected to.

Magic Markers

#%# family=auto
#%# capabilities=autoconf suggest

Bugs

None known

Author

Bjørn Ruberg

License

GPLv2

Pod Errors

Hey! The above document had some coding errors, which are explained below:

  • Around line 47:

    Non-ASCII character seen before =encoding in ‘Bjørn’. Assuming UTF-8

#!/bin/bash

: <<=cut

=head1 NAME

squeezebox_ - plugin to monitor a SqueezeCenter and associated
players.

=head1 APPLICABLE SYSTEMS

Probably any system running SqueezeCenter. Change the host to allow
for remote monitoring.

=head1 CONFIGURATION

No configuration should be required if run on the same server as
SqueezeCenter. If the plugin is run from another unit or in a
non-default configuration, please use the environment variables
'squeezebox_host' and 'squeezebox_port' to connect. Also, if your
nc(1) binary is not called "nc", or not the one in $PATH, please define it
in the plugin's environment file (/etc/munin/squeezebox or similar).

Sample follows:

 [squeezebox_*]
  env.squeezebox_host 192.168.100.10
  env.squeezebox_port 9095
  env.netcat /usr/local/bin/nc

=head1 INTERPRETATION

The "volume" graphs only graphs the player's volume, not the amplifier
or whatever the player is connected to.

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf suggest

=head1 BUGS

None known

=head1 AUTHOR

Bjørn Ruberg

=head1 LICENSE

GPLv2

=cut

HOST=${squeezecenter_host:-localhost}
PORT=${squeezecenter_port:-9090}
NC=${netcat:-nc}

if [ "$1" = "autoconf" ]; then
        if ! command -v "$NC" >/dev/null; then
		echo "no (no netcat/nc binary found)"
		exit 0
	fi
	if ! echo exit | "$NC" "$HOST" "$PORT" 1>/dev/null 2>&1; then
		echo "no (no connection on $HOST port $PORT)"
		exit 0
	fi
	VERSION=$(printf "%b" "version ?\\nexit\\n" | "$NC" "$HOST" "$PORT" 2>/dev/null)
	if [ -n "$VERSION" ]; then
		echo "yes"
		exit 0
	else
		echo "no (socket responding but version not found: something is weird)"
		exit 0
	fi
fi

if [ "$1" = "suggest" ]; then
	echo "songs"
	echo "artists"
	echo "albums"
	echo "genres"
	echo "years"
	echo "signalstrength"
	echo "volume"
	exit 0
fi

# Add this plugin to a cron job with the argument "update"
# Adjust the interval to your own tempo for adding/deleting
# music :-)
#
# example: 5 * * * * /usr/share/munin/plugins/squeezebox_ update

if [ "$1" = "update" ]; then
	printf "%b" "rescan\\nexit\\n" | "$NC" "$HOST" "$PORT" >/dev/null
	exit 0
fi


CHECK=$(echo "$0" | cut -d _ -f 2-)
case "$CHECK" in
	songs)
		ATTR="songs"
		;;
	artists)
		ATTR="artists"
		;;
	albums)
		ATTR="albums"
		;;
	genres)
		ATTR="genres"
		;;
	years)
		CMD="years"
		;;
	signalstrength)
		CMD="signalstrength"
		TITLE="Signal strength"
		;;
	volume)
		CMD="mixer volume"
		TITLE="Mixer volume"
		;;
	*)
		echo "Can't run without a proper symlink. Exiting."
		echo "Try running munin-node-configure --suggest."
		exit 1
		;;
esac

if [ -z "$ATTR" ] && [ -z "$CMD" ]; then
	echo "Urk"
	exit 2
fi

if [ "$CMD" = "years" ]; then
        no_of_years=$(printf "%b" "years\\nexit\\n" | "$NC" "$HOST" "$PORT" | sed 's/%3A/:/g' | cut -d ':' -f 2)
        years_array=$(printf "%b" "years 0 $no_of_years\\nexit\\n" | "$NC" "$HOST" "$PORT" | sed 's/%3A/:/g' | cut -d ' ' -f 4- | sed 's/year://g' | cut -d ' ' -f "-$no_of_years")
        # shellcheck disable=SC2207
        arr1=( $(echo "$years_array" | tr -s ' ' ' ') )
	(( no_of_years-- )) # We don't need that last entry in the array
	if [ "$1" = "config" ]; then
                echo "graph_title Number of years"
                echo "graph_vlabel years"
                echo "graph_category radio"
		echo "graph_args --base 1000 -l 0"
		# echo -n "graph_order "
		# echo $years_array | tr '[:space:]' " y"
		# echo "graph_order y0"
		printf "graph_order y"
                echo "${years_array// / y}"

                for i in $(seq 0 "$no_of_years"); do
                        year=${arr1[$i]}
                        if [ "$year" = 0 ]; then
                                echo "y0.label No year"
                        else
                                echo "y${year}.label $year"
                        fi
                        if [ "$i" = 0 ]; then
                                echo "y${year}.draw AREA"
                        else
                                echo "y${year}.draw STACK"
                        fi
                done
                exit 0
        fi
        for i in $(seq 0 "$no_of_years"); do
                year=${arr1[$i]}
                printf "y%s.value " "$year"
                printf "%b" "albums 0 0 year:${year}\\nexit\\n" | "$NC" "$HOST" "$PORT" | sed 's/%3A/:/g' | cut -d ':' -f 3
        done
elif [ "$CMD" = "signalstrength" ] || [ "$CMD" = "mixer volume" ]; then
        if [ "$1" = "config" ]; then
            echo "graph_title $TITLE"
            echo "graph_vlabel $CMD"
            echo "graph_category radio"
            COUNT=$(printf "%b" 'player count ?\nexit\n' | "$NC" "$HOST" "$PORT" | cut -d " " -f 3)
            (( COUNT-- ))
            for ID in $(seq 0 "$COUNT"); do
                MAC=$(printf "%b" "player id $ID ?\\nexit\\n" | "$NC" "$HOST" "$PORT" | cut -d " " -f 4 | sed 's/%3A/:/g')
                NAME=$(printf "%b" "player name $MAC ?\\nexit\\n" | "$NC" "$HOST" "$PORT" | cut -d " " -f 4 | sed 's/%20/ /g')
                MAC2=${MAC//:/}
                MAC2=${MAC2//./_}
                echo "$MAC2.label $NAME"
            done
            exit 0
        fi
        COUNT=$(printf "%b" 'player count ?\nexit\n' | "$NC" "$HOST" "$PORT" | cut -d " " -f 3)
        (( COUNT-- ))
        for ID in $(seq 0 "$COUNT"); do
            MAC=$(printf "%b" "player id $ID ?\\nexit\\n" | "$NC" "$HOST" "$PORT" | cut -d " " -f 4 | sed 's/%3A/:/g')
            VAL=$(printf "%b" "$MAC $CMD ?\\nexit\\n"| "$NC" "$HOST" "$PORT" | cut -d " " -f 2- | sed "s/$CMD //")
            MAC2=${MAC//:/}
            [ "$VAL" -eq 0 ] && VAL=100
            echo "$MAC2.value $VAL"
	done
else
	if [ "$1" = "config" ]; then
		echo "graph_title Number of $ATTR"
		echo "graph_vlabel $ATTR"
		echo "graph_scale no"
		echo "graph_category radio"
		echo "$ATTR.label $ATTR"
		exit 0
	fi
	CMD="info total $ATTR "
	echo -n "$ATTR.value "
	printf "%b" "$CMD ?\\nexit\\n" | "$NC" "$HOST" "$PORT" | sed "s/^$CMD//"
fi