#!/bin/sh

: <<EOF

=head1 NAME

psu_ - Wildcard plugin to graph the number of processes by a given
user.

=head1 CONFIGURATION

This is a wildcard plugin.  The link name extension is the user name
we wish to graph.

Example:

 ln -s /usr/share/munin/plugins/psu_ /etc/munin/plugins/psu_foo

...will monitor the user "foo"

=head1 AUTHORS

Unknown author

=head1 LICENSE

GPLv2

=head1 BUGS

Plugin is "autoconf suggest", but "suggest" will always return no
suggestions.

=head1 MAGIC MARKERS

 #%# family=manual
 #%# capabilities=autoconf suggest

=cut

EOF

name=$(basename "$0" | sed 's/^psu_//g')

if [ "$1" = "autoconf" ]; then
	echo yes
	exit 0
fi

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

if [ "$1" = "config" ]; then

	echo "graph_title Number of processes owned by $name"
	echo 'graph_args --base 1000 --vertical-label processes -l 0'
	echo 'graph_category processes'
	echo "count.label $name"
	echo 'count.draw LINE2'
	exit 0
fi

printf "count.value "
(pgrep -u "$name"; pgrep -U "$name") | sort -u | wc -l