def _update_host_state_map(self, context):
# Get resource usage across the available share nodes:
topic = CONF.share_topic
share_services = db.service_get_all_by_topic(context, topic)
for service in share_services:
host = service['host']
# Warn about down services and remove them from host_state_map
if not utils.service_is_up(service) or service['disabled']:
LOG.warning(_LW("Share service is down. (host: %s).") % host)
if self.host_state_map.pop(host, None):
LOG.info(_LI("Removing non-active host: %s from "
"scheduler cache.") % host)
continue
# Create and register host_state if not in host_state_map
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(
host,
capabilities=capabilities,
service=dict(six.iteritems(service)))
self.host_state_map[host] = host_state
# Update capabilities and attributes in host_state
host_state.update_from_share_capability(
capabilities, service=dict(six.iteritems(service)))
def hosts_up(self, context, topic):
"""Return the list of hosts that have a running service for topic."""
services = db.service_get_all_by_topic(context, topic)
return [service['host']
for service in services
if utils.service_is_up(service)]
def get_all_host_states_share(self, context):
"""Returns a dict of all the hosts the HostManager
knows about. Also, each of the consumable resources in HostState
are pre-populated and adjusted based on data in the db.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available share nodes:
topic = CONF.share_topic
share_services = db.service_get_all_by_topic(context, topic)
for service in share_services:
if not utils.service_is_up(service) or service['disabled']:
LOG.warn(_("service is down or disabled."))
continue
host = service['host']
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if host_state:
# copy capabilities to host_state.capabilities
host_state.update_capabilities(capabilities,
dict(six.iteritems(service)))
else:
host_state = self.host_state_cls(
host,
capabilities=capabilities,
service=dict(six.iteritems(service)))
self.host_state_map[host] = host_state
# update host_state
host_state.update_from_share_capability(capabilities)
return self.host_state_map.itervalues()
def test_hosts_up(self):
service1 = {'host': 'host1'}
service2 = {'host': 'host2'}
services = [service1, service2]
self.mox.StubOutWithMock(db, 'service_get_all_by_topic')
self.mox.StubOutWithMock(utils, 'service_is_up')
db.service_get_all_by_topic(self.context,
self.topic).AndReturn(services)
utils.service_is_up(service1).AndReturn(False)
utils.service_is_up(service2).AndReturn(True)
self.mox.ReplayAll()
result = self.driver.hosts_up(self.context, self.topic)
self.assertEqual(result, ['host2'])
def get_all_host_states_share(self, context):
"""Get all hosts and their states.
Returns a dict of all the hosts the HostManager knows
about. Also, each of the consumable resources in HostState are
pre-populated and adjusted based on data in the db.
For example:
{'192.168.1.100': HostState(), ...}
"""
# Get resource usage across the available share nodes:
topic = CONF.share_topic
share_services = db.service_get_all_by_topic(context, topic)
for service in share_services:
if not utils.service_is_up(service) or service['disabled']:
LOG.warn(_LW("service is down or disabled."))
continue
host = service['host']
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if host_state:
# copy capabilities to host_state.capabilities
host_state.update_capabilities(capabilities,
dict(six.iteritems(service)))
else:
host_state = self.host_state_cls(host,
capabilities=capabilities,
service=dict(
six.iteritems(service)))
self.host_state_map[host] = host_state
# update host_state
host_state.update_from_share_capability(capabilities)
return self.host_state_map.itervalues()
def _update_host_state_map(self, context):
# Get resource usage across the available share nodes:
topic = CONF.share_topic
share_services = db.service_get_all_by_topic(context, topic)
for service in share_services:
host = service['host']
# Warn about down services and remove them from host_state_map
if not utils.service_is_up(service) or service['disabled']:
LOG.warn(_LW("Share service is down. (host: %s)") % host)
if self.host_state_map.pop(host, None):
LOG.info(_LI("Removing non-active host: %s from "
"scheduler cache.") % host)
continue
# Create and register host_state if not in host_state_map
capabilities = self.service_states.get(host, None)
host_state = self.host_state_map.get(host)
if not host_state:
host_state = self.host_state_cls(
host,
capabilities=capabilities,
service=dict(six.iteritems(service)))
self.host_state_map[host] = host_state
# Update capabilities and attributes in host_state
host_state.update_from_share_capability(
capabilities, service=dict(six.iteritems(service)))
def hosts_up(self, context, topic):
"""Return the list of hosts that have a running service for topic."""
services = db.service_get_all_by_topic(context, topic)
return [service['host']
for service in services
if utils.service_is_up(service)]
def test_get_all_host_states_share(self):
context = 'fake_context'
topic = CONF.share_topic
self.mox.StubOutWithMock(db, 'service_get_all_by_topic')
self.mox.StubOutWithMock(host_manager.LOG, 'warn')
ret_services = fakes.SHARE_SERVICES
db.service_get_all_by_topic(context, topic).AndReturn(ret_services)
# Disabled service
host_manager.LOG.warn("service is down or disabled.")
self.mox.ReplayAll()
self.host_manager.get_all_host_states_share(context)
host_state_map = self.host_manager.host_state_map
self.assertEqual(len(host_state_map), 4)
# Check that service is up
for i in xrange(4):
share_node = fakes.SHARE_SERVICES[i]
host = share_node['host']
self.assertEqual(host_state_map[host].service,
share_node)
def mox_host_manager_db_calls_share(mock, context):
mock.StubOutWithMock(db, 'service_get_all_by_topic')
db.service_get_all_by_topic(mox.IgnoreArg(),
mox.IgnoreArg()).AndReturn(SHARE_SERVICES)
