#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# reclass — recursive external node classifier
#
# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
# Released under the terms of the Artistic Licence 2.0
#
__name__ = 'reclass'
__description__ = 'classify nodes based on an external data source'
__version__ = '1.0'
__author__ = 'martin f. krafft <madduck@madduck.net>'
__copyright__ = 'Copyright © 2007–13 ' + __author__
__licence__ = 'Artistic Licence 2.0'

import sys, os, posix
import reclass.config
from reclass.output import OutputLoader
from reclass.storage import StorageBackendLoader
import reclass.errors
from reclass import get_data, output

def _error(msg, rc):
    print >>sys.stderr, msg
    sys.exit(rc)

config_file = None
for d in (os.getcwd(), os.path.dirname(sys.argv[0])):
    f = os.path.join(d, __name__ + '-config.yml')
    if os.access(f, os.R_OK):
        config_file = f
        break
try:
    defaults = { 'pretty_print' : True, 'output' : 'yaml' }
    options = reclass.config.get_options(__name__, __version__,
                                         __description__, config_file,
                                         defaults)
    nodes_uri, classes_uri = reclass.config.path_mangler(options.inventory_base_uri,
                                                            options.nodes_uri,
                                                            options.classes_uri)
    data = get_data(options.storage_type, nodes_uri, classes_uri,
                    options.node)
    print output(data, options.output, options.pretty_print)
    sys.exit(posix.EX_OK)

except reclass.errors.ReclassException, e:
    _error(e.message, e.rc)