Parse Icinga object cache file using Python and regex

parse_icinga_object_cache.py

#!/usr/bin/env python
# Parse Icinga object cache file into proper data structure
import re
import logging

logger = logging.getLogger(__name__)


def parse_config(cache_file):
    """
    Parse Icinga object cache
    :param cache_file: Object cache file 
    :return: list containing dictionaries for each object
    """
    content = open(cache_file).read()
    regex = r'define\s+(\w+)\s+\{\n|\t(\w+)\s+([^\n]*)\n|\t\}'
    matches = re.finditer(regex, content, re.DOTALL)

    result = []
    obj = {}
    key = None

    for match in matches:
        groups = match.groups()

        if groups == (None, None, None):
            result.append(obj)
            obj = {}

        for group_num in range(0, len(groups)):
            group_num = group_num + 1

            if match.group(group_num):
                token = match.group(group_num)
                logger.info("Group {}: {}".format(group_num, token))
                if group_num == 1:
                    obj['object_type'] = token
                elif group_num == 2:
                    key = token
                elif group_num == 3:
                    obj[key] = token
    return result