def determine_helper_hostname(session, logger, config, dbswitch):
"""Try to figure out a useful helper from the mappings.
"""
helper_name = config.get("broker", "poll_helper_service")
if not helper_name: # pragma: no cover
return
helper_service = Service.get_unique(session, helper_name,
compel=InternalError)
mapped_instances = ServiceInstance.get_mapped_instance_cache(
dbpersonality=None, dblocation=dbswitch.location,
dbservices=[helper_service])
for dbsi in mapped_instances.get(helper_service, []):
if dbsi.server_hosts:
# Poor man's load balancing...
jump = choice(dbsi.server_hosts).fqdn
logger.client_info("Using jump host {0} from {1:l} to run CheckNet "
"for {2:l}.".format(jump, dbsi, dbswitch))
return jump
logger.client_info("No jump host for %s, calling CheckNet from %s." %
(dbswitch, config.get("broker", "hostname")))
return None
def cache_service_maps(self, dbservices):
self.service_maps = ServiceInstance.get_mapped_instance_cache(
self.personality, self.location, dbservices, self.network)
def cache_service_maps(self, dbservices):
self.service_maps = ServiceInstance.get_mapped_instance_cache(
self.personality, self.location, dbservices, self.network)
