def update_available_resource(self, context):
"""Override in-memory calculations of compute node resource usage based
on data audited from the hypervisor layer.
Add in resource claims in progress to account for operations that have
declared a need for resources, but not necessarily retrieved them from
the hypervisor layer yet.
"""
LOG.audit(_("Auditing locally available compute resources"))
resources = self.driver.get_available_resource(self.nodename)
if not resources:
# The virt driver does not support this function
LOG.audit(
_("Virt driver does not support "
"'get_available_resource' Compute tracking is disabled."))
self.compute_node = None
return
self._verify_resources(resources)
self._report_hypervisor_resource_view(resources)
# Grab all instances assigned to this node:
instances = db.instance_get_all_by_host_and_node(
context, self.host, self.nodename)
# Now calculate usage based on instance utilization:
self._update_usage_from_instances(resources, instances)
# Grab all in-progress migrations:
migrations = db.migration_get_in_progress_by_host(context, self.host)
self._update_usage_from_migrations(resources, migrations)
self._report_final_resource_view(resources)
self._sync_compute_node(context, resources)
def update_available_resource(self, context):
"""Override in-memory calculations of compute node resource usage based
on data audited from the hypervisor layer.
Add in resource claims in progress to account for operations that have
declared a need for resources, but not necessarily retrieved them from
the hypervisor layer yet.
"""
LOG.audit(_("Auditing locally available compute resources"))
resources = self.driver.get_available_resource(self.nodename)
if not resources:
# The virt driver does not support this function
LOG.audit(_("Virt driver does not support "
"'get_available_resource' Compute tracking is disabled."))
self.compute_node = None
return
self._verify_resources(resources)
self._report_hypervisor_resource_view(resources)
# Grab all instances assigned to this node:
instances = db.instance_get_all_by_host_and_node(context, self.host,
self.nodename)
# Now calculate usage based on instance utilization:
self._update_usage_from_instances(resources, instances)
# Grab all in-progress migrations:
migrations = db.migration_get_in_progress_by_host(context, self.host)
self._update_usage_from_migrations(resources, migrations)
self._report_final_resource_view(resources)
self._sync_compute_node(context, resources)
def test_in_progress_host2(self):
migrations = db.migration_get_in_progress_by_host(self.ctxt, 'host2')
# 2 as dest, 2 as source
self.assertEqual(4, len(migrations))
self._assert_in_progress(migrations)
def test_instance_join(self):
migrations = db.migration_get_in_progress_by_host(self.ctxt, 'host2')
for migration in migrations:
instance = migration['instance']
self.assertEqual(migration['instance_uuid'], instance['uuid'])
def test_in_progress_host1(self):
migrations = db.migration_get_in_progress_by_host(self.ctxt, 'host1')
# 2 as source + 1 as dest
self.assertEqual(3, len(migrations))
self._assert_in_progress(migrations)
