def test_by_host(self):
self.mox.StubOutWithMock(db, "aggregate_get_by_host")
db.aggregate_get_by_host(self.context, "fake-host", key=None).AndReturn([fake_aggregate])
self.mox.ReplayAll()
aggs = aggregate.AggregateList.get_by_host(self.context, "fake-host")
self.assertEqual(1, len(aggs))
self.compare_obj(aggs[0], fake_aggregate, subs=SUBS)
def test_by_host(self):
self.mox.StubOutWithMock(db, 'aggregate_get_by_host')
db.aggregate_get_by_host(self.context, 'fake-host', key=None,
).AndReturn([fake_aggregate])
self.mox.ReplayAll()
aggs = aggregate.AggregateList.get_by_host(self.context, 'fake-host')
self.assertEqual(1, len(aggs))
self.compare_obj(aggs[0], fake_aggregate, subs=SUBS)
def _host_find(context, session, src, dst):
"""Return the host from the xenapi host reference.
:param src: the compute host being put in maintenance (source of VMs)
:param dst: the hypervisor host reference (destination of VMs)
:return: the compute host that manages dst
"""
# NOTE: this would be a lot simpler if nova-compute stored
# FLAGS.host in the XenServer host's other-config map.
# TODO(armando-migliaccio): improve according the note above
aggregate = db.aggregate_get_by_host(context,
src,
key=pool_states.POOL_FLAG)[0]
if not aggregate:
raise exception.AggregateHostNotFound(host=src)
uuid = session.call_xenapi('host.get_record', dst)['uuid']
for compute_host, host_uuid in aggregate.metadetails.iteritems():
if host_uuid == uuid:
return compute_host
raise exception.NoValidHost(reason='Host %(host_uuid)s could not be found '
'from aggregate metadata: %(metadata)s.' % {
'host_uuid': uuid,
'metadata': aggregate.metadetails
})
def test_aggregate_get_by_host(self):
"""Ensure we can get aggregates by host."""
ctxt = context.get_admin_context()
values = {"name": "fake_aggregate2", "availability_zone": "fake_avail_zone"}
a1 = _create_aggregate_with_hosts(context=ctxt)
a2 = _create_aggregate_with_hosts(context=ctxt, values=values)
r1 = db.aggregate_get_by_host(ctxt, "foo.openstack.org")
self.assertEqual([a1.id, a2.id], [x.id for x in r1])
def get_by_host(cls, context, host, key=None):
api_db_aggregates = [
cls._fill_deprecated(agg)
for agg in _get_by_host_from_db(context, host, key=key)
]
db_aggregates = db.aggregate_get_by_host(context, host, key=key)
return base.obj_make_list(context, cls(context), objects.Aggregate,
db_aggregates + api_db_aggregates)
def test_aggregate_get_by_host_with_key(self):
"""Ensure we can get aggregates by host."""
ctxt = context.get_admin_context()
values = {"name": "fake_aggregate2", "availability_zone": "fake_avail_zone"}
a1 = _create_aggregate_with_hosts(context=ctxt, metadata={"goodkey": "good"})
a2 = _create_aggregate_with_hosts(context=ctxt, values=values)
# filter result by key
r1 = db.aggregate_get_by_host(ctxt, "foo.openstack.org", key="goodkey")
self.assertEqual([a1.id], [x.id for x in r1])
def _get_host_uuid(self):
if self.is_slave:
aggr = db.aggregate_get_by_host(context.get_admin_context(), FLAGS.host, key=pool_states.POOL_FLAG)[0]
if not aggr:
LOG.error(_("Host is member of a pool, but DB " "says otherwise"))
raise exception.AggregateHostNotFound()
return aggr.metadetails[FLAGS.host]
else:
with self._get_session() as session:
host_ref = session.xenapi.session.get_this_host(session.handle)
return session.xenapi.host.get_uuid(host_ref)
def test_aggregate_get_by_host_with_key(self):
"""Ensure we can get aggregates by host."""
ctxt = context.get_admin_context()
values = {'name': 'fake_aggregate2',
'availability_zone': 'fake_avail_zone', }
a1 = _create_aggregate_with_hosts(context=ctxt,
metadata={'goodkey': 'good'})
a2 = _create_aggregate_with_hosts(context=ctxt, values=values)
# filter result by key
r1 = db.aggregate_get_by_host(ctxt, 'foo.openstack.org', key='goodkey')
self.assertEqual([a1.id], [x.id for x in r1])
def _get_host_uuid(self):
if self.is_slave:
aggr = db.aggregate_get_by_host(context.get_admin_context(),
FLAGS.host, key=pool_states.POOL_FLAG)[0]
if not aggr:
LOG.error(_('Host is member of a pool, but DB '
'says otherwise'))
raise exception.AggregateHostNotFound()
return aggr.metadetails[FLAGS.host]
else:
with self._get_session() as session:
host_ref = session.xenapi.session.get_this_host(session.handle)
return session.xenapi.host.get_uuid(host_ref)
def _populate_host_uuid(self):
if self.is_slave:
try:
aggr = db.aggregate_get_by_host(context.get_admin_context(),
FLAGS.host)
self.host_uuid = aggr.metadetails[FLAGS.host]
except exception.AggregateHostNotFound:
LOG.exception(_('Host is member of a pool, but DB '
'says otherwise'))
raise
else:
with self._get_session() as session:
host_ref = session.xenapi.session.get_this_host(session.handle)
self.host_uuid = session.xenapi.host.get_uuid(host_ref)
def _populate_host_uuid(self):
if self.is_subordinate:
try:
aggr = db.aggregate_get_by_host(context.get_admin_context(),
FLAGS.host)
self.host_uuid = aggr.metadetails[FLAGS.host]
except exception.AggregateHostNotFound:
LOG.exception(
_('Host is member of a pool, but DB '
'says otherwise'))
raise
else:
with self._get_session() as session:
host_ref = session.xenapi.session.get_this_host(session.handle)
self.host_uuid = session.xenapi.host.get_uuid(host_ref)
def _host_find(context, session, src, dst):
"""Return the host from the xenapi host reference.
:param src: the compute host being put in maintenance (source of VMs)
:param dst: the hypervisor host reference (destination of VMs)
:return: the compute host that manages dst
"""
# NOTE: this would be a lot simpler if nova-compute stored
# FLAGS.host in the XenServer host's other-config map.
# TODO(armando-migliaccio): improve according the note above
aggregate = db.aggregate_get_by_host(context, src)
uuid = session.call_xenapi('host.get_record', dst)['uuid']
for compute_host, host_uuid in aggregate.metadetails.iteritems():
if host_uuid == uuid:
return compute_host
raise exception.NoValidHost(reason='Host %(host_uuid)s could not be found '
'from aggregate metadata: %(metadata)s.' %
{'host_uuid': uuid,
'metadata': aggregate.metadetails})
class XenAPISession(object):
"""The session to invoke XenAPI SDK calls"""
def __init__(self, url, user, pw):
self.XenAPI = self.get_imported_xenapi()
self._sessions = queue.Queue()
self.host_uuid = None
exception = self.XenAPI.Failure(
_("Unable to log in to XenAPI "
"(is the Dom0 disk full?)"))
is_slave = False
for i in xrange(FLAGS.xenapi_connection_concurrent):
try:
session = self._create_session(url)
with timeout.Timeout(FLAGS.xenapi_login_timeout, exception):
session.login_with_password(user, pw)
except self.XenAPI.Failure, e:
# if user and pw of the master are different, we're doomed!
if e.details[0] == 'HOST_IS_SLAVE':
master = e.details[1]
session = self.XenAPI.Session(
pool.swap_xapi_host(url, master))
session.login_with_password(user, pw)
is_slave = True
else:
raise
self._sessions.put(session)
if is_slave:
try:
aggr = db.aggregate_get_by_host(context.get_admin_context(),
FLAGS.host)
self.host_uuid = aggr.metadetails[FLAGS.host]
except exception.AggregateHostNotFound:
LOG.exception(
_('Host is member of a pool, but DB '
'says otherwise'))
raise
def aggregate_get_by_host(self, context, host, key=None):
return db.aggregate_get_by_host(context, host, key)
def get_by_host(cls, context, host, key=None):
db_aggregates = db.aggregate_get_by_host(context, host, key=key)
return base.obj_make_list(context, cls(context), objects.Aggregate, db_aggregates)
def aggregate_get_by_host(self, context, host, key=None):
return db.aggregate_get_by_host(context, host, key=key)
def get_by_host(cls, context, host, key=None):
db_aggregates = db.aggregate_get_by_host(context, host, key=key)
return base.obj_make_list(context, AggregateList(), Aggregate,
db_aggregates)
def test_aggregate_get_by_host(self):
"""Ensure we can get an aggregate by host."""
ctxt = context.get_admin_context()
r1 = _create_aggregate_with_hosts(context=ctxt)
r2 = db.aggregate_get_by_host(ctxt, 'foo.openstack.org')
self.assertEqual(r1.id, r2.id)
def get_by_host(cls, context, host):
db_aggregates = db.aggregate_get_by_host(context, host)
return base.obj_make_list(context, AggregateList(), Aggregate,
db_aggregates)
def test_aggregate_get_by_host(self):
"""Ensure we can get an aggregate by host."""
ctxt = context.get_admin_context()
r1 = _create_aggregate_with_hosts(context=ctxt)
r2 = db.aggregate_get_by_host(ctxt, 'foo.openstack.org')
self.assertEqual(r1.id, r2.id)
def test_aggregate_get_by_host_not_found(self):
"""Ensure AggregateHostNotFound is raised with unknown host."""
ctxt = context.get_admin_context()
_create_aggregate_with_hosts(context=ctxt)
self.assertEqual([], db.aggregate_get_by_host(ctxt, 'unknown_host'))
def get_by_host(cls, context, host):
db_aggregates = db.aggregate_get_by_host(context, host)
return _make_list(context, AggregateList(), Aggregate, db_aggregates)
def get_by_host(cls, context, host, key=None):
api_db_aggregates = [cls._fill_deprecated(agg) for agg in
_get_by_host_from_db(context, host, key=key)]
db_aggregates = db.aggregate_get_by_host(context, host, key=key)
return base.obj_make_list(context, cls(context), objects.Aggregate,
db_aggregates + api_db_aggregates)
