275 lines
12 KiB
Python
275 lines
12 KiB
Python
# Copyright 2014, 2015 IBM Corp.
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#
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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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import mock
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import logging
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from nova import test
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import pypowervm.tests.test_fixtures as pvm_fx
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from pypowervm.tests.test_utils import pvmhttp
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import pypowervm.wrappers.managed_system as pvm_ms
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from pypowervm.wrappers.pcm import phyp as pvm_phyp
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from nova_powervm.virt.powervm import host as pvm_host
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MS_HTTPRESP_FILE = "managedsystem.txt"
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PCM_FILE = "phyp_pcm_data2.txt"
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PCM2_FILE = "phyp_pcm_data3.txt"
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MS_NAME = 'HV4'
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LOG = logging.getLogger(__name__)
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logging.basicConfig()
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class TestPowerVMHost(test.TestCase):
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def setUp(self):
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super(TestPowerVMHost, self).setUp()
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ms_http = pvmhttp.load_pvm_resp(MS_HTTPRESP_FILE)
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self.assertNotEqual(ms_http, None,
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"Could not load %s " %
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MS_HTTPRESP_FILE)
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entries = ms_http.response.feed.findentries(pvm_ms._SYSTEM_NAME,
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MS_NAME)
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self.assertNotEqual(entries, None,
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"Could not find %s in %s" %
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(MS_NAME, MS_HTTPRESP_FILE))
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self.ms_entry = entries[0]
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self.wrapper = pvm_ms.System.wrap(self.ms_entry)
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def test_host_resources(self):
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stats = pvm_host.build_host_resource_from_ms(self.wrapper)
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self.assertIsNotNone(stats)
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# Check for the presence of fields
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fields = (('vcpus', 500), ('vcpus_used', 0),
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('memory_mb', 5242880), ('memory_mb_used', 128),
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'hypervisor_type', 'hypervisor_version',
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'hypervisor_hostname', 'cpu_info',
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'supported_instances', 'stats')
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for fld in fields:
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if isinstance(fld, tuple):
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value = stats.get(fld[0], None)
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self.assertEqual(value, fld[1])
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else:
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value = stats.get(fld, None)
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self.assertIsNotNone(value)
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# Check for individual stats
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hstats = (('proc_units', '500.00'), ('proc_units_used', '0.00'))
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for stat in hstats:
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if isinstance(stat, tuple):
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value = stats['stats'].get(stat[0], None)
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self.assertEqual(value, stat[1])
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else:
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value = stats['stats'].get(stat, None)
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self.assertIsNotNone(value)
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class TestHostCPUStats(test.TestCase):
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def setUp(self):
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super(TestHostCPUStats, self).setUp()
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# Fixture for the adapter
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self.adpt = self.useFixture(pvm_fx.AdapterFx()).adpt
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# Test data
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self.cur_json_resp = pvmhttp.PVMFile(PCM_FILE)
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self.prev_json_resp = pvmhttp.PVMFile(PCM2_FILE)
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# Put in the samples.
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self.phyp = pvm_phyp.PhypInfo(self.cur_json_resp.body)
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self.prev_phyp = pvm_phyp.PhypInfo(self.prev_json_resp.body)
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def _get_sample(self, lpar_id, sample):
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for lpar in sample.lpars:
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if lpar.id == lpar_id:
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return lpar
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return None
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@mock.patch('nova_powervm.virt.powervm.host.HostCPUStats._get_cpu_freq')
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_update_internal_metric(self, mock_ensure_ltm, mock_refresh,
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mock_cpu_freq):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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mock_cpu_freq.return_value = 4116
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# Make sure None is returned if there is no data.
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host_stats.cur_phyp = None
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host_stats._update_internal_metric()
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self.assertIsNone(host_stats.cur_data)
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# Make the 'prev' the current...for the first pass
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host_stats.cur_phyp = self.prev_phyp
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host_stats.prev_phyp = None
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host_stats._update_internal_metric()
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# Validate the dictionary... No user cycles because all of the
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# previous data is empty.
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expect = {'iowait': 0, 'idle': 1.6125886579352732e+16,
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'kernel': 58599310268, 'user': 0,
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'frequency': 4116}
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self.assertEqual(expect, host_stats.cur_data)
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# Now 'increment' it with a new current/previous
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host_stats.cur_phyp = self.phyp
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host_stats.prev_phyp = self.prev_phyp
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host_stats._update_internal_metric()
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# Validate this dictionary. Note that the values are still higher
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# overall, even though we add the 'deltas' from each VM.
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expect = {'iowait': 0, 'idle': 1.6125856569262732e+16,
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'kernel': 58599310268, 'user': 30010090000,
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'frequency': 4116}
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self.assertEqual(expect, host_stats.cur_data)
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@mock.patch('nova_powervm.virt.powervm.host.HostCPUStats.'
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'_get_total_cycles')
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@mock.patch('nova_powervm.virt.powervm.host.HostCPUStats._get_cpu_freq')
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_update_internal_metric_bad_total(
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self, mock_ensure_ltm, mock_refresh, mock_cpu_freq,
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mock_tot_cycles):
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"""Validates that if the total cycles are off, we handle."""
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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mock_cpu_freq.return_value = 4116
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# Mock the total cycles to some really low number.
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mock_tot_cycles.return_value = 5
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# Now 'increment' it with a new current/previous
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host_stats.cur_phyp = self.phyp
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host_stats.prev_phyp = self.prev_phyp
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host_stats._update_internal_metric()
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# Validate this dictionary. Note that the idle is now 0...not a
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# negative number.
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expect = {'iowait': 0, 'idle': 0, 'kernel': 58599310268,
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'user': 30010090000, 'frequency': 4116}
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self.assertEqual(expect, host_stats.cur_data)
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@mock.patch('subprocess.check_output')
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_get_cpu_freq(self, mock_ensure_ltm, mock_refresh, mock_cmd):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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mock_cmd.return_value = '4116.000000MHz\n'
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self.assertEqual(4116, host_stats._get_cpu_freq())
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self.assertEqual(int, type(host_stats._get_cpu_freq()))
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_gather_user_cycles(self, mock_ensure_ltm, mock_refresh):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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# Test that we can run with previous samples and then without.
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host_stats.cur_phyp = self.phyp
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host_stats.prev_phyp = self.prev_phyp
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resp = host_stats._gather_user_cycles()
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self.assertEqual(30010090000, resp)
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# Last, test to make sure the previous data is used.
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host_stats.prev_data = {'user': 1000000}
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resp = host_stats._gather_user_cycles()
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self.assertEqual(30011090000, resp)
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# Now test if there is no previous sample. Since there are no previous
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# samples, it will be 0 (except it WILL default up to the previous
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# min cycles, which we just set to 1000000).
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host_stats.prev_phyp = None
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resp = host_stats._gather_user_cycles()
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self.assertEqual(1000000, resp)
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_delta_proc_cycles(self, mock_ensure_ltm, mock_refresh):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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# Test that a previous sample allows us to gather the delta across all
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# of the VMs. This should take into account the scenario where a LPAR
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# is deleted and a new one takes its place (LPAR ID 6)
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delta = host_stats._delta_proc_cycles(self.phyp.sample.lpars,
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self.prev_phyp.sample.lpars)
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self.assertEqual(10010090000, delta)
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# Now test as if there is no previous data. This results in 0 as they
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# could have all been LPMs with months of cycles (rather than 30
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# seconds delta).
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delta2 = host_stats._delta_proc_cycles(self.phyp.sample.lpars, None)
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self.assertEqual(0, delta2)
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self.assertNotEqual(delta2, delta)
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# Test that we can do this with the VIOSes as well.
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delta = host_stats._delta_proc_cycles(self.phyp.sample.vioses,
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self.prev_phyp.sample.vioses)
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self.assertEqual(20000000000, delta)
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_delta_user_cycles(self, mock_ensure_ltm, mock_refresh):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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# Test that a previous sample allows us to gather just the delta.
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new_elem = self._get_sample(4, self.phyp.sample)
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old_elem = self._get_sample(4, self.prev_phyp.sample)
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delta = host_stats._delta_user_cycles(new_elem, old_elem)
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self.assertEqual(45000, delta)
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# Validate the scenario where we don't have a previous. Should default
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# to 0, given no context of why the previous sample did not have the
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# data.
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delta = host_stats._delta_user_cycles(new_elem, None)
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self.assertEqual(0, delta)
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_find_prev_sample(self, mock_ensure_ltm, mock_refresh):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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# Sample 6 in the current shouldn't match the previous. It has the
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# same LPAR ID, but a different name. This is considered different
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new_elem = self._get_sample(6, self.phyp.sample)
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prev = host_stats._find_prev_sample(new_elem,
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self.prev_phyp.sample.lpars)
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self.assertIsNone(prev)
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# Lpar 4 should be in the old one. Match that up.
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new_elem = self._get_sample(4, self.phyp.sample)
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prev = host_stats._find_prev_sample(new_elem,
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self.prev_phyp.sample.lpars)
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self.assertIsNotNone(prev)
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self.assertEqual(500000, prev.processor.entitled_proc_cycles)
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# Test that we get None back if there are no previous samples
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prev = host_stats._find_prev_sample(new_elem, None)
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self.assertIsNone(prev)
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@mock.patch('pypowervm.tasks.monitor.util.MetricCache._refresh_if_needed')
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@mock.patch('pypowervm.tasks.monitor.util.ensure_ltm_monitors')
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def test_get_total_cycles(self, mock_ensure_ltm, mock_refresh):
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host_stats = pvm_host.HostCPUStats(self.adpt, 'host_uuid')
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host_stats.cur_phyp = self.phyp
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# Make sure we get the full system cycles.
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max_cycles = host_stats._get_total_cycles()
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self.assertEqual(1.6125945178663e+16, max_cycles)
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