#!/bin/bash
#
# Node tool.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.  If not, see
# <http://www.gnu.org/licenses/>.

# Get a list of puppet node files
function hydra_node_files {
  if [ -d "$PUPPET/manifests/nodes/" ]; then
    FILES="$PUPPET/manifests/nodes/*"
  else
    FILES="`find $PUPPET -name 'nodes.pp'`"
  fi
}

# Get all lines matching a node definition
function hydra_node_lines {
  # See http://www.mail-archive.com/puppet-users@googlegroups.com/msg01615.html
  grep ^node $FILES | sed -e 's/^node //' | awk -F, '{for(i=1;i<=NF;i++) {print $i}}'
}

# Default node retrieval method
function hydra_nodes {
  hydra_node_lines | cut -d "'" -f2
}

# Load
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load

# Command line arguments
CLASS="$1"

# Validation
if [ -z "$PUPPET" ]; then
  echo "No PUPPET parameter defined at $HYDRA preferences."
  exit 1
fi

# Get initial file list
hydra_node_files

# Get nodes
if [ ! -z "$CLASS" ]; then
  hydra_nodes | while read node; do
    find $PUPPET/hiera -name "$node.yaml"
  done | while read candidate; do
    if grep -e "$CLASS" $candidate | grep -qe "^nodo::role"; then
      basename $candidate .yaml
    fi
  done
else
  hydra_nodes
fi