Merge pull request #799 from bertptrs/plugin-pacman

Add a plugin for the pacman package manager.

plugins/other/pacman_pending_updates

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+: <<=cut
+
+=head1 NAME
+
+pacman_pending_updates - Plugin to monitor pending updates
+
+=head1 APPLICABLE SYSTEMS
+
+All systems with pacman as their package manager.
+
+=head1 CONFIGURATION
+
+The plugin needs no additional configuration and works out of the box.
+
+It is possible to add warnings for certain numbers of updates pending. The
+following will send a warning when there are more than 10 updates pending.
+
+  [pacman_pending_updates]
+  env.PENDING_UPDATES_WARNING :10
+
+=head1 INTERPRETATION
+
+This plugin will draw one line: the number of updates pending.
+
+=head1 MAGIC MARKERS
+
+  #%# family=auto
+  #%# capabilities=autoconf
+
+=head1 VERSION
+
+  1.0.0
+
+=head1 AUTHOR
+
+Bert Peters <bert@bertptrs.nl>
+
+=head1 LICENSE
+
+GPLv2
+
+=cut
+
+case $1 in
+	config)
+		cat <<'EOM'
+graph_args --base 1000 -l 0
+graph_title Pending updates
+graph_vlabel updates
+graph_category security
+updates.label updates
+updates.info Current number of pending updates
+EOM
+		if [[ -n $PENDING_UPDATES_WARNING ]]; then
+			echo updates.warning $PENDING_UPDATES_WARNING
+		fi
+		;;
+
+	autoconf)
+		hash checkupdates &> /dev/null && echo yes || echo "no (checkupdates not found)"
+		;;
+
+	*)
+		echo updates.value $(checkupdates | wc -l)
+		;;
+esac
+
+exit 0