aodh/tests/api/v2/test_compute_duration_by_resource_scenarios.py

# -*- encoding: utf-8 -*-
#
# Copyright © 2012 New Dream Network, LLC (DreamHost)
#
# Author: Doug Hellmann <doug.hellmann@dreamhost.com>
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Test listing raw events.
"""

import datetime
import logging
import testscenarios

from ceilometer.openstack.common import timeutils
from ceilometer.openstack.common.fixture import moxstubout
from ceilometer.storage import models
from ceilometer.tests import db as tests_db
from .base import FunctionalTest

load_tests = testscenarios.load_tests_apply_scenarios

LOG = logging.getLogger(__name__)


class TestComputeDurationByResource(FunctionalTest,
                                    tests_db.MixinTestsWithBackendScenarios):

    def setUp(self):
        super(TestComputeDurationByResource, self).setUp()
        self.stubs = self.useFixture(moxstubout.MoxStubout()).stubs
        # Create events relative to the range and pretend
        # that the intervening events exist.

        self.early1 = datetime.datetime(2012, 8, 27, 7, 0)
        self.early2 = datetime.datetime(2012, 8, 27, 17, 0)

        self.start = datetime.datetime(2012, 8, 28, 0, 0)

        self.middle1 = datetime.datetime(2012, 8, 28, 8, 0)
        self.middle2 = datetime.datetime(2012, 8, 28, 18, 0)

        self.end = datetime.datetime(2012, 8, 28, 23, 59)

        self.late1 = datetime.datetime(2012, 8, 29, 9, 0)
        self.late2 = datetime.datetime(2012, 8, 29, 19, 0)

    def _stub_interval_func(self, func):
        self.stubs.Set(type(self.conn), 'get_meter_statistics', func)

    def _set_interval(self, start, end):
        def get_interval(ignore_self, event_filter, period, groupby):
            assert event_filter.start
            assert event_filter.end
            if (event_filter.start > end or event_filter.end < start):
                return []
            duration_start = max(event_filter.start, start)
            duration_end = min(event_filter.end, end)
            duration = timeutils.delta_seconds(duration_start, duration_end)
            return [
                models.Statistics(
                    unit='',
                    min=0,
                    max=0,
                    avg=0,
                    sum=0,
                    count=0,
                    period=None,
                    period_start=None,
                    period_end=None,
                    duration=duration,
                    duration_start=duration_start,
                    duration_end=duration_end,
                    groupby=None,
                )
            ]
        self._stub_interval_func(get_interval)

    def _invoke_api(self):
        return self.get_json('/meters/instance:m1.tiny/statistics',
                             q=[{'field': 'timestamp',
                                 'op': 'ge',
                                 'value': self.start.isoformat()},
                                {'field': 'timestamp',
                                 'op': 'le',
                                 'value': self.end.isoformat()},
                                {'field': 'search_offset',
                                 'value': 10}])

    def test_before_range(self):
        self._set_interval(self.early1, self.early2)
        data = self._invoke_api()
        self.assertEqual(data, [])

    def _assert_times_match(self, actual, expected):
        if actual:
            actual = timeutils.parse_isotime(actual)
        actual = actual.replace(tzinfo=None)
        assert actual == expected

    def test_overlap_range_start(self):
        self._set_interval(self.early1, self.middle1)
        data = self._invoke_api()
        self._assert_times_match(data[0]['duration_start'], self.start)
        self._assert_times_match(data[0]['duration_end'], self.middle1)
        self.assertEqual(data[0]['duration'], 8 * 60 * 60)

    def test_within_range(self):
        self._set_interval(self.middle1, self.middle2)
        data = self._invoke_api()
        self._assert_times_match(data[0]['duration_start'], self.middle1)
        self._assert_times_match(data[0]['duration_end'], self.middle2)
        self.assertEqual(data[0]['duration'], 10 * 60 * 60)

    def test_within_range_zero_duration(self):
        self._set_interval(self.middle1, self.middle1)
        data = self._invoke_api()
        self._assert_times_match(data[0]['duration_start'], self.middle1)
        self._assert_times_match(data[0]['duration_end'], self.middle1)
        self.assertEqual(data[0]['duration'], 0)

    def test_overlap_range_end(self):
        self._set_interval(self.middle2, self.late1)
        data = self._invoke_api()
        self._assert_times_match(data[0]['duration_start'], self.middle2)
        self._assert_times_match(data[0]['duration_end'], self.end)
        self.assertEqual(data[0]['duration'], ((6 * 60) - 1) * 60)

    def test_after_range(self):
        self._set_interval(self.late1, self.late2)
        data = self._invoke_api()
        self.assertEqual(data, [])

    def test_without_end_timestamp(self):
        def get_interval(ignore_self, event_filter, period, groupby):
            return [
                models.Statistics(
                    unit=None,
                    count=0,
                    min=None,
                    max=None,
                    avg=None,
                    duration=None,
                    duration_start=self.late1,
                    duration_end=self.late2,
                    sum=0,
                    period=None,
                    period_start=None,
                    period_end=None,
                    groupby=None,
                )
            ]
        self._stub_interval_func(get_interval)
        data = self.get_json('/meters/instance:m1.tiny/statistics',
                             q=[{'field': 'timestamp',
                                 'op': 'ge',
                                 'value': self.late1.isoformat()},
                                {'field': 'resource_id',
                                 'value': 'resource-id'},
                                {'field': 'search_offset',
                                 'value': 10}])
        self._assert_times_match(data[0]['duration_start'], self.late1)
        self._assert_times_match(data[0]['duration_end'], self.late2)

    def test_without_start_timestamp(self):
        def get_interval(ignore_self, event_filter, period, groupby):
            return [
                models.Statistics(
                    unit=None,
                    count=0,
                    min=None,
                    max=None,
                    avg=None,
                    duration=None,
                    duration_start=self.early1,
                    duration_end=self.early2,
                    sum=0,
                    period=None,
                    period_start=None,
                    period_end=None,
                    groupby=None,
                )
            ]
            return (self.early1, self.early2)
        self._stub_interval_func(get_interval)
        data = self.get_json('/meters/instance:m1.tiny/statistics',
                             q=[{'field': 'timestamp',
                                 'op': 'le',
                                 'value': self.early2.isoformat()},
                                {'field': 'resource_id',
                                 'value': 'resource-id'},
                                {'field': 'search_offset',
                                 'value': 10}])
        self._assert_times_match(data[0]['duration_start'], self.early1)
        self._assert_times_match(data[0]['duration_end'], self.early2)