bf1155dfb5
There is a new Zones implementation coming that will use AMQP-to-AMQP channels vs. the public API. This is being done for three reasons: 1. remove complications in the OpenStack API (and possibly allow EC2 Zones) 2. remove dependencies on keystone and novaclient 3. faster scheduling (fewer chances for race conditions) Learn more here: http://wiki.openstack.org/EssexSchedulerImprovements Change-Id: I6fe538923dd5ae19276afac2ac3311a285fd5c99
128 lines
5.0 KiB
Python
128 lines
5.0 KiB
Python
# Copyright 2011 OpenStack LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Tests For Distributed Scheduler.
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"""
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from nova import context
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from nova import exception
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from nova.scheduler import least_cost
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from nova.scheduler import host_manager
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from nova import test
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from nova.tests.scheduler import fakes
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def fake_filter_hosts(hosts, filter_properties):
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return list(hosts)
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class DistributedSchedulerTestCase(test.TestCase):
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"""Test case for Distributed Scheduler."""
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def test_run_instance_no_hosts(self):
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"""
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Ensure empty hosts & child_zones result in NoValidHosts exception.
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"""
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def _fake_empty_call_zone_method(*args, **kwargs):
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return []
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sched = fakes.FakeDistributedScheduler()
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fake_context = context.RequestContext('user', 'project')
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request_spec = {'instance_type': {'memory_mb': 1, 'root_gb': 1,
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'ephemeral_gb': 0},
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'instance_properties': {'project_id': 1}}
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self.assertRaises(exception.NoValidHost, sched.schedule_run_instance,
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fake_context, request_spec)
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def test_run_instance_non_admin(self):
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"""Test creating an instance locally using run_instance, passing
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a non-admin context. DB actions should work."""
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self.was_admin = False
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def fake_get(context, *args, **kwargs):
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# make sure this is called with admin context, even though
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# we're using user context below
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self.was_admin = context.is_admin
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return {}
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sched = fakes.FakeDistributedScheduler()
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self.stubs.Set(sched.host_manager, 'get_all_host_states', fake_get)
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fake_context = context.RequestContext('user', 'project')
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request_spec = {'instance_type': {'memory_mb': 1, 'local_gb': 1},
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'instance_properties': {'project_id': 1}}
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self.assertRaises(exception.NoValidHost, sched.schedule_run_instance,
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fake_context, request_spec)
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self.assertTrue(self.was_admin)
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def test_schedule_bad_topic(self):
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"""Parameter checking."""
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sched = fakes.FakeDistributedScheduler()
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fake_context = context.RequestContext('user', 'project')
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self.assertRaises(NotImplementedError, sched._schedule, fake_context,
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"foo", {})
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def test_schedule_happy_day(self):
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"""Make sure there's nothing glaringly wrong with _schedule()
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by doing a happy day pass through."""
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self.next_weight = 1.0
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def _fake_weighted_sum(functions, hosts, options):
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self.next_weight += 2.0
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host_state = hosts[0]
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return least_cost.WeightedHost(self.next_weight,
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host_state=host_state)
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sched = fakes.FakeDistributedScheduler()
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fake_context = context.RequestContext('user', 'project',
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is_admin=True)
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self.stubs.Set(sched.host_manager, 'filter_hosts',
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fake_filter_hosts)
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self.stubs.Set(least_cost, 'weighted_sum', _fake_weighted_sum)
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fakes.mox_host_manager_db_calls(self.mox, fake_context)
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request_spec = {'num_instances': 10,
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'instance_type': {'memory_mb': 512, 'root_gb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1},
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'instance_properties': {'project_id': 1,
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'root_gb': 512,
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'memory_mb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1}}
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self.mox.ReplayAll()
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weighted_hosts = sched._schedule(fake_context, 'compute',
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request_spec)
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self.mox.VerifyAll()
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self.assertEquals(len(weighted_hosts), 10)
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for weighted_host in weighted_hosts:
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self.assertTrue(weighted_host.host_state is not None)
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def test_get_cost_functions(self):
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self.flags(reserved_host_memory_mb=128)
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fixture = fakes.FakeDistributedScheduler()
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fns = fixture.get_cost_functions()
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self.assertEquals(len(fns), 1)
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weight, fn = fns[0]
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self.assertEquals(weight, 1.0)
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hostinfo = host_manager.HostState('host', 'compute')
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hostinfo.update_from_compute_node(dict(memory_mb=1000,
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local_gb=0, vcpus=1))
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self.assertEquals(1000 - 128, fn(hostinfo, {}))
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