#
#   load_parsers.py
#   
#   Search for and load files which parse logs for particular services
#

import imp
import os
import glob

parser_dir = "/usr/share/logparse/"
main_module = "__init__.py"

import logging
logger = logging.getLogger(__name__)

def search():
    logger.debug("Searching for parsers in {0}".format(parser_dir))
    parsers = []
    parser_candidates = glob.glob(os.path.join(os.path.dirname(parser_dir), "*.py"))
    for p in parser_candidates:
        location = os.path.join(parser_dir, p)
        if not os.path.isdir(parser_dir) or not main_module + '.py' in os.listdir(location):
            continue
        info = imp.find_module(main_module, [location])
        parsers.append({"name": p, "info": info})
    return parsers

def load(parser):
    logger.debug("Loading {0}".format(parser["name"]))
    return imp.load_module(parser["name"], *parser["info"])