def __init__(self, type=None, confstr=None):
"""Create an InfraDB object
An InfraDB uses some sort of database-ish driver to map one real
infrastructure object to another for this infrastructure. For example,
the 'webserver' role may map to hostA, hostB and hostC
>>> db=InfraDB('json', 'tests/infradb.json')
>>>
"""
log.debug("Initializing driver type %s" % type)
if type == 'dns' or type == None:
from ubik.infra.infradns import InfraDBDriverDNS
self.driver = InfraDBDriverDNS(confstr)
elif type == 'json':
from ubik.infra.infrajson import InfraDBDriverJSON
self.driver = InfraDBDriverJSON(confstr)
else:
raise InfraDBException('No Such Driver: ' + type)
