openstack neutron使用中遇到的問題總結
阿新 • • 發佈：2019-01-21
@db_api.retry_if_session_inactive()
def create_or_update_agent(self, context, agent_state):
"""Registers new agent in the database or updates existing.
Returns tuple of agent status and state.
Status is from server point of view: alive, new or revived.
It could be used by agent to do some sync with the server if needed.
"""
status = n_const.AGENT_ALIVE
with context.session.begin(subtransactions=True):
res_keys = ['agent_type', 'binary', 'host', 'topic']
res = dict((k, agent_state[k]) for k in res_keys)
if 'availability_zone' in agent_state:
res['availability_zone'] = agent_state['availability_zone']
configurations_dict = agent_state.get('configurations', {})
res['configurations'] = jsonutils.dumps(configurations_dict)
resource_versions_dict = agent_state.get('resource_versions')
if resource_versions_dict:
res['resource_versions'] = jsonutils.dumps(
resource_versions_dict)
res['load'] = self._get_agent_load(agent_state)
current_time = timeutils.utcnow()
try:
agent_db = self._get_agent_by_type_and_host(
context, agent_state['agent_type'], agent_state['host'])