deborphan

#!/bin/sh

: << =cut

=head1 NAME

deborphan - Monitor orphaned Debian packages

=head1 APPLICABLE SYSTEMS

Debian-ish systems with deborphan installed.

=head1 CONFIGURATION

None needed.

=head1 AUTHOR

Olivier Mehani <shtrom+munin@ssji.net>
Based on the debsecan plugin by Nicolas Bouthors. 2016-09-02

=head1 LICENSE

GPLv2

=head1 MAGIC MARKERS

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

=cut

# shellcheck disable=SC1090
. "$MUNIN_LIBDIR/plugins/plugin.sh"

# Auto enable if we have deborphan only
if [ "$1" = "autoconf" ] ; then
  if which deborphan >/dev/null; then
    echo yes
  else
    echo "no (deborphan is missing)"
  fi
  exit 0
fi

# Fail if we don't have deborphan
if ! which deborphan >/dev/null; then
  echo "deborphan is missing" >&2
  exit 1
fi

OUT=$(deborphan --show-section --guess-all | sort)

CATEGORIES="$(echo "${OUT}" | awk '{print $1}' | uniq)"

if [ "$1" = "config" ]; then
  cat <<EOF
graph_title Orphaned packages
graph_args -l 0 --base 1000
graph_vlabel number of packages
graph_category system
graph_period second
graph_info This graph show the number of orphaned packages on your system. Use deborphan to see details.
EOF
  for CAT in ${CATEGORIES}; do
    CATFIELD=$(clean_fieldname "${CAT}")
    cat <<EOF
${CATFIELD}.label ${CAT}
${CATFIELD}.type GAUGE
${CATFIELD}.draw AREASTACK
${CATFIELD}.min 0
${CATFIELD}.info The number of orphaned packages in ${CAT}
EOF
  done

else
  for CAT in ${CATEGORIES}; do
    CATFIELD=$(clean_fieldname "${CAT}")
    CATDATA=$(echo "${OUT}" | sed -n 's#'"${CAT}"' \+##p')
    echo "${CATFIELD}.value $(echo "${CATDATA}" | wc -l)"
    echo "${CATFIELD}.extinfo $(echo "${CATDATA}" | tr '\n' ' ')"
  done
fi