#!/bin/sh
# -*- sh -*-

: <<=cut

=head1 NAME

ps_memory - Munin plugin to monitor memory usage of processes. Which processes
are configured in plugin-conf.d

=head1 APPLICABLE SYSTEMS

Any system with a compatible ps command.

=head1 CONFIGURATION

There is no default configuration.  This is an example:

  [ps_memory]
     user root
     env.names apache2 nagios3

The names are used to grep with directly, after cleaning. So, this plugin
only supports very basic pattern matching. To fix: see multips

=head1 INTERPRETATION

This plugin gets the real memory usage (Private + Shared) from ps_mem.py

=head1 MAGIC MARKERS

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

=head1 VERSION

  0.2 use ps_mem.py
  0.1 first release, based on:
    multimemory.in 1590 2008-04-17 18:21:31Z matthias
  As distributed in Debian.

=head1 BUGS

None known

=head1 AUTHOR

Originally: matthias?
Modified by: dominic@dubdot.com
Modified by: benjamin@coding4coffee.ch

=head1 LICENSE

GPLv2

=cut

. $MUNIN_LIBDIR/plugins/plugin.sh


if [ -z "$names" ]; then
	echo "Configuration required"
	exit 1
fi

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

if [ "$1" = "config" ]; then
	echo graph_title Process memory usage
	echo 'graph_category processes'
	echo 'graph_args --base 1024 --vertical-label memory -l 0'
	for name in $names; do
	    	fieldname=$(clean_fieldname $name)

		echo "$fieldname.label $name"
		echo "$fieldname.draw LINE1"
		echo "$fieldname.info Processes matching: $name"
	done
	exit 0
fi

for name in $names; do
	fieldname=$(clean_fieldname $name)
	printf "$fieldname.value "

	pids=$(pgrep -f $name | paste -d, -s)
	if [ -n "$pids" ]; then
		python /etc/munin/helper/ps_mem.py -p $pids -t
	else
		echo 0
	fi
done