"""``MongoHandler`` - Python logging handler for MongoDB.

Usage: ::

    import logging
    from mongohandler import MongoHandler

    logger = logging.getLogger("my-logger")
    logger.setLevel(logging.DEBUG)
    logger.addHandler(MongoHandler(db="big_brother", collection="logs"))
    logger.info("The object of power is power.")

"""
import logging
import pymongo


class MongoHandler(logging.Handler):
    def __init__(self, level=0, hostname="localhost", port=27017, \
        db="global_logging", collection="log_data"):
        logging.Handler.__init__(self)

        self.setLevel(level)
        self.connection = pymongo.Connection(hostname)
        self.db = getattr(self.connection, db)
        self.collection = getattr(self.db, collection)

    def emit(self, record):
        log_entry = {
            'levelname': record.levelname,
            'levelno': record.levelno,
            'name': record.name,
            'msg': record.msg,
            'created': record.created
        }

        self.collection.ensure_index("levelname")
        self.collection.ensure_index("levelno")
        self.collection.ensure_index("created")
        self.collection.insert(log_entry)