#
# Copyright 2013 eNovance <licensing@enovance.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.
"""Tests alarm operation."""

import datetime
import uuid

import mock
import oslo_messaging.conffixture
from oslo_serialization import jsonutils
import requests
import six
from six import moves
import six.moves.urllib.parse as urlparse

from aodh import messaging
from aodh.storage import models
from aodh.tests import constants
from aodh.tests.functional.api import v2
from aodh.tests.functional import db as tests_db


def default_alarms(auth_headers):
    return [models.Alarm(name='name1',
                         type='threshold',
                         enabled=True,
                         alarm_id='a',
                         description='a',
                         state='insufficient data',
                         severity='critical',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=True,
                         user_id=auth_headers['X-User-Id'],
                         project_id=auth_headers['X-Project-Id'],
                         time_constraints=[dict(name='testcons',
                                                start='0 11 * * *',
                                                duration=300)],
                         rule=dict(comparison_operator='gt',
                                   threshold=2.0,
                                   statistic='avg',
                                   evaluation_periods=60,
                                   period=1,
                                   meter_name='meter.test',
                                   query=[{'field': 'project_id',
                                           'op': 'eq', 'value':
                                           auth_headers['X-Project-Id']}
                                          ]),
                         ),
            models.Alarm(name='name2',
                         type='threshold',
                         enabled=True,
                         alarm_id='b',
                         description='b',
                         state='insufficient data',
                         severity='critical',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=False,
                         user_id=auth_headers['X-User-Id'],
                         project_id=auth_headers['X-Project-Id'],
                         time_constraints=[],
                         rule=dict(comparison_operator='gt',
                                   threshold=4.0,
                                   statistic='avg',
                                   evaluation_periods=60,
                                   period=1,
                                   meter_name='meter.test',
                                   query=[{'field': 'project_id',
                                           'op': 'eq', 'value':
                                           auth_headers['X-Project-Id']}
                                          ]),
                         ),
            models.Alarm(name='name3',
                         type='threshold',
                         enabled=True,
                         alarm_id='c',
                         description='c',
                         state='insufficient data',
                         severity='moderate',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=False,
                         user_id=auth_headers['X-User-Id'],
                         project_id=auth_headers['X-Project-Id'],
                         time_constraints=[],
                         rule=dict(comparison_operator='gt',
                                   threshold=3.0,
                                   statistic='avg',
                                   evaluation_periods=60,
                                   period=1,
                                   meter_name='meter.mine',
                                   query=[{'field': 'project_id',
                                           'op': 'eq', 'value':
                                           auth_headers['X-Project-Id']}
                                          ]),
                         ),
            models.Alarm(name='name4',
                         type='combination',
                         enabled=True,
                         alarm_id='d',
                         description='d',
                         state='insufficient data',
                         severity='low',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=False,
                         user_id=auth_headers['X-User-Id'],
                         project_id=auth_headers['X-Project-Id'],
                         time_constraints=[],
                         rule=dict(alarm_ids=['a', 'b'],
                                   operator='or'),
                         ),
            ]


class TestAlarmsBase(v2.FunctionalTest,
                     tests_db.MixinTestsWithBackendScenarios):

    def setUp(self):
        super(TestAlarmsBase, self).setUp()
        self.auth_headers = {'X-User-Id': str(uuid.uuid4()),
                             'X-Project-Id': str(uuid.uuid4())}

    @staticmethod
    def _add_default_threshold_rule(alarm):
        if (alarm['type'] == 'threshold' and
                'exclude_outliers' not in alarm['threshold_rule']):
            alarm['threshold_rule']['exclude_outliers'] = False

    def _verify_alarm(self, json, alarm, expected_name=None):
        if expected_name and alarm.name != expected_name:
            self.fail("Alarm not found")
        self._add_default_threshold_rule(json)
        for key in json:
            if key.endswith('_rule'):
                storage_key = 'rule'
            else:
                storage_key = key
            self.assertEqual(json[key], getattr(alarm, storage_key))

    def _get_alarm(self, id):
        data = self.get_json('/alarms')
        match = [a for a in data if a['alarm_id'] == id]
        self.assertEqual(1, len(match), 'alarm %s not found' % id)
        return match[0]

    def _update_alarm(self, id, updated_data, auth_headers=None):
        data = self._get_alarm(id)
        data.update(updated_data)
        self.put_json('/alarms/%s' % id,
                      params=data,
                      headers=auth_headers or self.auth_headers)

    def _delete_alarm(self, alarm, auth_headers=None):
        self.delete('/alarms/%s' % alarm['alarm_id'],
                    headers=auth_headers or self.auth_headers,
                    status=204)


class TestListEmptyAlarms(TestAlarmsBase):

    def test_empty(self):
        data = self.get_json('/alarms')
        self.assertEqual([], data)


class TestAlarms(TestAlarmsBase):

    def setUp(self):
        super(TestAlarms, self).setUp()
        for alarm in default_alarms(self.auth_headers):
            self.alarm_conn.update_alarm(alarm)

    def test_list_alarms(self):
        data = self.get_json('/alarms')
        self.assertEqual(4, len(data))
        self.assertEqual(set(['name1', 'name2', 'name3', 'name4']),
                         set(r['name'] for r in data))
        self.assertEqual(set(['meter.test', 'meter.mine']),
                         set(r['threshold_rule']['meter_name']
                             for r in data if 'threshold_rule' in r))
        self.assertEqual(set(['or']),
                         set(r['combination_rule']['operator']
                             for r in data if 'combination_rule' in r))

    def test_alarms_query_with_timestamp(self):
        date_time = datetime.datetime(2012, 7, 2, 10, 41)
        isotime = date_time.isoformat()
        resp = self.get_json('/alarms',
                             q=[{'field': 'timestamp',
                                 'op': 'gt',
                                 'value': isotime}],
                             expect_errors=True)
        self.assertEqual(resp.status_code, 400)
        self.assertEqual(jsonutils.loads(resp.body)['error_message']
                         ['faultstring'],
                         'Unknown argument: "timestamp": '
                         'not valid for this resource')

    def test_alarms_query_with_meter(self):
        resp = self.get_json('/alarms',
                             q=[{'field': 'meter',
                                 'op': 'eq',
                                 'value': 'meter.mine'}],
                             )
        self.assertEqual(1, len(resp))
        self.assertEqual('c',
                         resp[0]['alarm_id'])
        self.assertEqual('meter.mine',
                         resp[0]
                         ['threshold_rule']
                         ['meter_name'])

    def test_alarms_query_with_state(self):
        alarm = models.Alarm(name='disabled',
                             type='combination',
                             enabled=False,
                             alarm_id='d',
                             description='d',
                             state='ok',
                             state_timestamp=constants.MIN_DATETIME,
                             timestamp=constants.MIN_DATETIME,
                             ok_actions=[],
                             insufficient_data_actions=[],
                             alarm_actions=[],
                             repeat_actions=False,
                             user_id=self.auth_headers['X-User-Id'],
                             project_id=self.auth_headers['X-Project-Id'],
                             time_constraints=[],
                             rule=dict(alarm_ids=['a', 'b'], operator='or'),
                             severity='critical')
        self.alarm_conn.update_alarm(alarm)
        resp = self.get_json('/alarms',
                             q=[{'field': 'state',
                                 'op': 'eq',
                                 'value': 'ok'}],
                             )
        self.assertEqual(1, len(resp))
        self.assertEqual('ok', resp[0]['state'])

    def test_list_alarms_by_type(self):
        alarms = self.get_json('/alarms',
                               q=[{'field': 'type',
                                   'op': 'eq',
                                   'value': 'threshold'}])
        self.assertEqual(3, len(alarms))
        self.assertEqual(set(['threshold']),
                         set(alarm['type'] for alarm in alarms))

    def test_get_not_existing_alarm(self):
        resp = self.get_json('/alarms/alarm-id-3', expect_errors=True)
        self.assertEqual(404, resp.status_code)
        self.assertEqual('Alarm alarm-id-3 not found',
                         jsonutils.loads(resp.body)['error_message']
                         ['faultstring'])

    def test_get_alarm(self):
        alarms = self.get_json('/alarms',
                               q=[{'field': 'name',
                                   'value': 'name1',
                                   }])
        self.assertEqual('name1', alarms[0]['name'])
        self.assertEqual('meter.test',
                         alarms[0]['threshold_rule']['meter_name'])

        one = self.get_json('/alarms/%s' % alarms[0]['alarm_id'])
        self.assertEqual('name1', one['name'])
        self.assertEqual('meter.test', one['threshold_rule']['meter_name'])
        self.assertEqual(alarms[0]['alarm_id'], one['alarm_id'])
        self.assertEqual(alarms[0]['repeat_actions'], one['repeat_actions'])
        self.assertEqual(alarms[0]['time_constraints'],
                         one['time_constraints'])

    def test_get_alarm_disabled(self):
        alarm = models.Alarm(name='disabled',
                             type='combination',
                             enabled=False,
                             alarm_id='d',
                             description='d',
                             state='insufficient data',
                             state_timestamp=constants.MIN_DATETIME,
                             timestamp=constants.MIN_DATETIME,
                             ok_actions=[],
                             insufficient_data_actions=[],
                             alarm_actions=[],
                             repeat_actions=False,
                             user_id=self.auth_headers['X-User-Id'],
                             project_id=self.auth_headers['X-Project-Id'],
                             time_constraints=[],
                             rule=dict(alarm_ids=['a', 'b'], operator='or'),
                             severity='critical')
        self.alarm_conn.update_alarm(alarm)

        alarms = self.get_json('/alarms',
                               q=[{'field': 'enabled',
                                   'value': 'False'}])
        self.assertEqual(1, len(alarms))
        self.assertEqual('disabled', alarms[0]['name'])

        one = self.get_json('/alarms/%s' % alarms[0]['alarm_id'])
        self.assertEqual('disabled', one['name'])

    def test_get_alarm_project_filter_wrong_op_normal_user(self):
        project = self.auth_headers['X-Project-Id']

        def _test(field, op):
            response = self.get_json('/alarms',
                                     q=[{'field': field,
                                         'op': op,
                                         'value': project}],
                                     expect_errors=True,
                                     status=400,
                                     headers=self.auth_headers)
            faultstring = ('Invalid input for field/attribute op. '
                           'Value: \'%(op)s\'. unimplemented operator '
                           'for %(field)s' % {'field': field, 'op': op})
            self.assertEqual(faultstring,
                             response.json['error_message']['faultstring'])

        _test('project', 'ne')
        _test('project_id', 'ne')

    def test_get_alarm_project_filter_normal_user(self):
        project = self.auth_headers['X-Project-Id']

        def _test(field):
            alarms = self.get_json('/alarms',
                                   q=[{'field': field,
                                       'op': 'eq',
                                       'value': project}])
            self.assertEqual(4, len(alarms))

        _test('project')
        _test('project_id')

    def test_get_alarm_other_project_normal_user(self):
        def _test(field):
            response = self.get_json('/alarms',
                                     q=[{'field': field,
                                         'op': 'eq',
                                         'value': 'other-project'}],
                                     expect_errors=True,
                                     status=401,
                                     headers=self.auth_headers)
            faultstring = 'Not Authorized to access project other-project'
            self.assertEqual(faultstring,
                             response.json['error_message']['faultstring'])

        _test('project')
        _test('project_id')

    def test_post_alarm_wsme_workaround(self):
        jsons = {
            'type': {
                'name': 'missing type',
                'threshold_rule': {
                    'meter_name': 'ameter',
                    'threshold': 2.0,
                }
            },
            'name': {
                'type': 'threshold',
                'threshold_rule': {
                    'meter_name': 'ameter',
                    'threshold': 2.0,
                }
            },
            'threshold_rule/meter_name': {
                'name': 'missing meter_name',
                'type': 'threshold',
                'threshold_rule': {
                    'threshold': 2.0,
                }
            },
            'threshold_rule/threshold': {
                'name': 'missing threshold',
                'type': 'threshold',
                'threshold_rule': {
                    'meter_name': 'ameter',
                }
            },
            'combination_rule/alarm_ids': {
                'name': 'missing alarm_ids',
                'type': 'combination',
                'combination_rule': {}
            }
        }
        for field, json in six.iteritems(jsons):
            resp = self.post_json('/alarms', params=json, expect_errors=True,
                                  status=400, headers=self.auth_headers)
            self.assertEqual("Invalid input for field/attribute %s."
                             " Value: \'None\'. Mandatory field missing."
                             % field.split('/', 1)[-1],
                             resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_time_constraint_start(self):
        json = {
            'name': 'added_alarm_invalid_constraint_duration',
            'type': 'threshold',
            'time_constraints': [
                {
                    'name': 'testcons',
                    'start': '11:00am',
                    'duration': 10
                }
            ],
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        self.post_json('/alarms', params=json, expect_errors=True, status=400,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_duplicate_time_constraint_name(self):
        json = {
            'name': 'added_alarm_duplicate_constraint_name',
            'type': 'threshold',
            'time_constraints': [
                {
                    'name': 'testcons',
                    'start': '* 11 * * *',
                    'duration': 10
                },
                {
                    'name': 'testcons',
                    'start': '* * * * *',
                    'duration': 20
                }
            ],
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        self.assertEqual(
            "Time constraint names must be unique for a given alarm.",
            resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_alarm_null_time_constraint(self):
        json = {
            'name': 'added_alarm_invalid_constraint_duration',
            'type': 'threshold',
            'time_constraints': None,
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)

    def test_post_invalid_alarm_time_constraint_duration(self):
        json = {
            'name': 'added_alarm_invalid_constraint_duration',
            'type': 'threshold',
            'time_constraints': [
                {
                    'name': 'testcons',
                    'start': '* 11 * * *',
                    'duration': -1,
                }
            ],
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        self.post_json('/alarms', params=json, expect_errors=True, status=400,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_time_constraint_timezone(self):
        json = {
            'name': 'added_alarm_invalid_constraint_timezone',
            'type': 'threshold',
            'time_constraints': [
                {
                    'name': 'testcons',
                    'start': '* 11 * * *',
                    'duration': 10,
                    'timezone': 'aaaa'
                }
            ],
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        self.post_json('/alarms', params=json, expect_errors=True, status=400,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_period(self):
        json = {
            'name': 'added_alarm_invalid_period',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 2.0,
                'statistic': 'avg',
                'period': -1,
            }

        }
        self.post_json('/alarms', params=json, expect_errors=True, status=400,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_null_rule(self):
        json = {
            'name': 'added_alarm_invalid_threshold_rule',
            'type': 'threshold',
            'threshold_rule': None,
            'combination_rule': None,
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        self.assertEqual(
            "threshold_rule must be set for threshold type alarm",
            resp.json['error_message']['faultstring'])

    def test_post_invalid_alarm_input_state(self):
        json = {
            'name': 'alarm1',
            'state': 'bad_state',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 50.0
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = ("Invalid input for field/attribute state."
                            " Value: 'bad_state'.")
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_input_severity(self):
        json = {
            'name': 'alarm1',
            'state': 'ok',
            'severity': 'bad_value',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 50.0
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = ("Invalid input for field/attribute severity."
                            " Value: 'bad_value'.")
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_input_type(self):
        json = {
            'name': 'alarm3',
            'state': 'ok',
            'type': 'bad_type',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 50.0
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = ("Invalid input for field/attribute"
                            " type."
                            " Value: 'bad_type'.")
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_input_enabled_str(self):
        json = {
            'name': 'alarm5',
            'enabled': 'bad_enabled',
            'state': 'ok',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 50.0
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = "Value not an unambiguous boolean: bad_enabled"
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_invalid_alarm_input_enabled_int(self):
        json = {
            'name': 'alarm6',
            'enabled': 0,
            'state': 'ok',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 50.0
            }
        }
        resp = self.post_json('/alarms', params=json,
                              headers=self.auth_headers)
        self.assertFalse(resp.json['enabled'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(5, len(alarms))

    def test_post_invalid_alarm_have_multiple_rules(self):
        json = {
            'name': 'added_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'meter',
                           'value': 'ameter'}],
                'comparison_operator': 'gt',
                'threshold': 2.0,
            },
            'combination_rule': {
                'alarm_ids': ['a', 'b'],

            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

        # threshold_rule and combination_rule order is not
        # predictable so it is not possible to do an exact match
        # here
        error_faultstring = resp.json['error_message']['faultstring']
        for expected_string in ['threshold_rule', 'combination_rule',
                                'cannot be set at the same time']:
            self.assertIn(expected_string, error_faultstring)

    def _do_post_alarm_invalid_action(self, ok_actions=None,
                                      alarm_actions=None,
                                      insufficient_data_actions=None,
                                      error_message=None):

        ok_actions = ok_actions or []
        alarm_actions = alarm_actions or []
        insufficient_data_actions = insufficient_data_actions or []
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'ok_actions': ok_actions,
            'alarm_actions': alarm_actions,
            'insufficient_data_actions': insufficient_data_actions,
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': '3',
                'period': '180',
            }
        }
        resp = self.post_json('/alarms', params=json, status=400,
                              headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))
        self.assertEqual(error_message,
                         resp.json['error_message']['faultstring'])

    def test_post_invalid_alarm_ok_actions(self):
        self._do_post_alarm_invalid_action(
            ok_actions=['spam://something/ok'],
            error_message='Unsupported action spam://something/ok')

    def test_post_invalid_alarm_alarm_actions(self):
        self._do_post_alarm_invalid_action(
            alarm_actions=['spam://something/alarm'],
            error_message='Unsupported action spam://something/alarm')

    def test_post_invalid_alarm_insufficient_data_actions(self):
        self._do_post_alarm_invalid_action(
            insufficient_data_actions=['spam://something/insufficient'],
            error_message='Unsupported action spam://something/insufficient')

    @staticmethod
    def _fake_urlsplit(*args, **kwargs):
        raise Exception("Evil urlsplit!")

    def test_post_invalid_alarm_actions_format(self):
        with mock.patch('oslo_utils.netutils.urlsplit',
                        self._fake_urlsplit):
            self._do_post_alarm_invalid_action(
                alarm_actions=['http://[::1'],
                error_message='Unable to parse action http://[::1')

    def test_post_alarm_defaults(self):
        to_check = {
            'enabled': True,
            'name': 'added_alarm_defaults',
            'ok_actions': [],
            'alarm_actions': [],
            'insufficient_data_actions': [],
            'repeat_actions': False,
        }

        json = {
            'name': 'added_alarm_defaults',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(5, len(alarms))
        for alarm in alarms:
            if alarm.name == 'added_alarm_defaults':
                for key in to_check:
                    self.assertEqual(to_check[key],
                                     getattr(alarm, key))
                break
        else:
            self.fail("Alarm not found")

    def test_post_conflict(self):
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': '3',
                'period': '180',
            }
        }

        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        self.post_json('/alarms', params=json, status=409,
                       headers=self.auth_headers)

    def _do_test_post_alarm(self, exclude_outliers=None):
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'low',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': '3',
                'period': '180',
            }
        }
        if exclude_outliers is not None:
            json['threshold_rule']['exclude_outliers'] = exclude_outliers

        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        json['threshold_rule']['query'].append({
            'field': 'project_id', 'op': 'eq',
            'value': self.auth_headers['X-Project-Id']})
        # to check to IntegerType type conversion
        json['threshold_rule']['evaluation_periods'] = 3
        json['threshold_rule']['period'] = 180
        self._verify_alarm(json, alarms[0], 'added_alarm')

    def test_post_alarm_outlier_exclusion_set(self):
        self._do_test_post_alarm(True)

    def test_post_alarm_outlier_exclusion_clear(self):
        self._do_test_post_alarm(False)

    def test_post_alarm_outlier_exclusion_defaulted(self):
        self._do_test_post_alarm()

    def test_post_alarm_noauth(self):
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'low',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': '3',
                'exclude_outliers': False,
                'period': '180',
            }
        }
        self.post_json('/alarms', params=json, status=201)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        # to check to BoundedInt type conversion
        json['threshold_rule']['evaluation_periods'] = 3
        json['threshold_rule']['period'] = 180
        if alarms[0].name == 'added_alarm':
            for key in json:
                if key.endswith('_rule'):
                    storage_key = 'rule'
                else:
                    storage_key = key
                self.assertEqual(getattr(alarms[0], storage_key),
                                 json[key])
        else:
            self.fail("Alarm not found")

    def _do_test_post_alarm_as_admin(self, explicit_project_constraint):
        """Test the creation of an alarm as admin for another project."""
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'user_id': 'auseridthatisnotmine',
            'project_id': 'aprojectidthatisnotmine',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        if explicit_project_constraint:
            project_constraint = {'field': 'project_id', 'op': 'eq',
                                  'value': 'aprojectidthatisnotmine'}
            json['threshold_rule']['query'].append(project_constraint)
        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'admin'
        self.post_json('/alarms', params=json, status=201,
                       headers=headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self.assertEqual('auseridthatisnotmine', alarms[0].user_id)
        self.assertEqual('aprojectidthatisnotmine', alarms[0].project_id)
        self._add_default_threshold_rule(json)
        if alarms[0].name == 'added_alarm':
            for key in json:
                if key.endswith('_rule'):
                    storage_key = 'rule'
                    if explicit_project_constraint:
                        self.assertEqual(json[key],
                                         getattr(alarms[0], storage_key))
                    else:
                        query = getattr(alarms[0], storage_key).get('query')
                        self.assertEqual(2, len(query))
                        implicit_constraint = {
                            u'field': u'project_id',
                            u'value': u'aprojectidthatisnotmine',
                            u'op': u'eq'
                        }
                        self.assertEqual(implicit_constraint, query[1])
                else:
                    self.assertEqual(json[key], getattr(alarms[0], key))
        else:
            self.fail("Alarm not found")

    def test_post_alarm_as_admin_explicit_project_constraint(self):
        """Test the creation of an alarm as admin for another project.

        With an explicit query constraint on the owner's project ID.
        """
        self._do_test_post_alarm_as_admin(True)

    def test_post_alarm_as_admin_implicit_project_constraint(self):
        """Test the creation of an alarm as admin for another project.

        Test without an explicit query constraint on the owner's project ID.
        """
        self._do_test_post_alarm_as_admin(False)

    def test_post_alarm_as_admin_no_user(self):
        """Test the creation of an alarm.

        Test the creation of an alarm as admin for another project but
        forgetting to set the values.
        """
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'project_id': 'aprojectidthatisnotmine',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'},
                          {'field': 'project_id', 'op': 'eq',
                           'value': 'aprojectidthatisnotmine'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'admin'
        self.post_json('/alarms', params=json, status=201,
                       headers=headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self.assertEqual(self.auth_headers['X-User-Id'], alarms[0].user_id)
        self.assertEqual('aprojectidthatisnotmine', alarms[0].project_id)
        self._verify_alarm(json, alarms[0], 'added_alarm')

    def test_post_alarm_as_admin_no_project(self):
        """Test the creation of an alarm.

        Test the creation of an alarm as admin for another project but
        forgetting to set the values.
        """
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'threshold',
            'user_id': 'auseridthatisnotmine',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'},
                          {'field': 'project_id', 'op': 'eq',
                           'value': 'aprojectidthatisnotmine'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'admin'
        self.post_json('/alarms', params=json, status=201,
                       headers=headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self.assertEqual('auseridthatisnotmine', alarms[0].user_id)
        self.assertEqual(self.auth_headers['X-Project-Id'],
                         alarms[0].project_id)
        self._verify_alarm(json, alarms[0], 'added_alarm')

    @staticmethod
    def _alarm_representation_owned_by(identifiers):
        json = {
            'name': 'added_alarm',
            'enabled': False,
            'type': 'threshold',
            'ok_actions': ['http://something/ok'],
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        for aspect, id in six.iteritems(identifiers):
            json['%s_id' % aspect] = id
        return json

    def _do_test_post_alarm_as_nonadmin_on_behalf_of_another(self,
                                                             identifiers):
        """Test posting an alarm.

        Test that posting an alarm as non-admin on behalf of another
        user/project fails with an explicit 401 instead of reverting
        to the requestor's identity.
        """
        json = self._alarm_representation_owned_by(identifiers)
        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'demo'
        resp = self.post_json('/alarms', params=json, status=401,
                              headers=headers)
        aspect = 'user' if 'user' in identifiers else 'project'
        params = dict(aspect=aspect, id=identifiers[aspect])
        self.assertEqual("Not Authorized to access %(aspect)s %(id)s" % params,
                         jsonutils.loads(resp.body)['error_message']
                         ['faultstring'])

    def test_post_alarm_as_nonadmin_on_behalf_of_another_user(self):
        identifiers = dict(user='auseridthatisnotmine')
        self._do_test_post_alarm_as_nonadmin_on_behalf_of_another(identifiers)

    def test_post_alarm_as_nonadmin_on_behalf_of_another_project(self):
        identifiers = dict(project='aprojectidthatisnotmine')
        self._do_test_post_alarm_as_nonadmin_on_behalf_of_another(identifiers)

    def test_post_alarm_as_nonadmin_on_behalf_of_another_creds(self):
        identifiers = dict(user='auseridthatisnotmine',
                           project='aprojectidthatisnotmine')
        self._do_test_post_alarm_as_nonadmin_on_behalf_of_another(identifiers)

    def _do_test_post_alarm_as_nonadmin_on_behalf_of_self(self, identifiers):
        """Test posting an alarm.

        Test posting an alarm as non-admin on behalf of own user/project
        creates alarm associated with the requestor's identity.
        """
        json = self._alarm_representation_owned_by(identifiers)
        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'demo'
        self.post_json('/alarms', params=json, status=201, headers=headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self.assertEqual(alarms[0].user_id,
                         self.auth_headers['X-User-Id'])
        self.assertEqual(alarms[0].project_id,
                         self.auth_headers['X-Project-Id'])

    def test_post_alarm_as_nonadmin_on_behalf_of_own_user(self):
        identifiers = dict(user=self.auth_headers['X-User-Id'])
        self._do_test_post_alarm_as_nonadmin_on_behalf_of_self(identifiers)

    def test_post_alarm_as_nonadmin_on_behalf_of_own_project(self):
        identifiers = dict(project=self.auth_headers['X-Project-Id'])
        self._do_test_post_alarm_as_nonadmin_on_behalf_of_self(identifiers)

    def test_post_alarm_as_nonadmin_on_behalf_of_own_creds(self):
        identifiers = dict(user=self.auth_headers['X-User-Id'],
                           project=self.auth_headers['X-Project-Id'])
        self._do_test_post_alarm_as_nonadmin_on_behalf_of_self(identifiers)

    def test_post_alarm_with_mismatch_between_type_and_rule(self):
        """Test the creation of an combination alarm with threshold rule."""
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': '3',
                'period': '180',
            }
        }
        resp = self.post_json('/alarms', params=json,
                              expect_errors=True, status=400,
                              headers=self.auth_headers)
        self.assertEqual(
            "combination_rule must be set for combination type alarm",
            resp.json['error_message']['faultstring'])

    def test_post_alarm_with_duplicate_actions(self):
        body = {
            'name': 'dup-alarm-actions',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'b'],
            },
            'alarm_actions': ['http://no.where', 'http://no.where']
        }
        resp = self.post_json('/alarms', params=body,
                              headers=self.auth_headers)
        self.assertEqual(201, resp.status_code)
        alarms = list(self.alarm_conn.get_alarms(name='dup-alarm-actions'))
        self.assertEqual(1, len(alarms))
        self.assertEqual(['http://no.where'], alarms[0].alarm_actions)

    def test_post_alarm_with_too_many_actions(self):
        self.CONF.set_override('alarm_max_actions', 1)
        body = {
            'name': 'alarm-with-many-actions',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'b'],
            },
            'alarm_actions': ['http://no.where', 'http://no.where2']
        }
        resp = self.post_json('/alarms', params=body, expect_errors=True,
                              headers=self.auth_headers)
        self.assertEqual(400, resp.status_code)
        self.assertEqual("alarm_actions count exceeds maximum value 1",
                         resp.json['error_message']['faultstring'])

    def test_post_alarm_normal_user_set_log_actions(self):
        body = {
            'name': 'log_alarm_actions',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'b'],
            },
            'alarm_actions': ['log://']
        }
        resp = self.post_json('/alarms', params=body, expect_errors=True,
                              headers=self.auth_headers)
        self.assertEqual(401, resp.status_code)
        expected_msg = ("You are not authorized to create action: log://")
        self.assertEqual(expected_msg,
                         resp.json['error_message']['faultstring'])

    def test_post_alarm_normal_user_set_test_actions(self):
        body = {
            'name': 'test_alarm_actions',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'b'],
            },
            'alarm_actions': ['test://']
        }
        resp = self.post_json('/alarms', params=body, expect_errors=True,
                              headers=self.auth_headers)
        self.assertEqual(401, resp.status_code)
        expected_msg = ("You are not authorized to create action: test://")
        self.assertEqual(expected_msg,
                         resp.json['error_message']['faultstring'])

    def test_post_alarm_admin_user_set_log_test_actions(self):
        body = {
            'name': 'admin_alarm_actions',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'b'],
            },
            'alarm_actions': ['test://', 'log://']
        }
        headers = self.auth_headers
        headers['X-Roles'] = 'admin'
        self.post_json('/alarms', params=body, status=201,
                       headers=headers)
        alarms = list(self.alarm_conn.get_alarms(name='admin_alarm_actions'))
        self.assertEqual(1, len(alarms))
        self.assertEqual(['test://', 'log://'],
                         alarms[0].alarm_actions)

    def test_post_alarm_without_actions(self):
        body = {
            'name': 'alarm_actions_none',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'b'],
            },
            'alarm_actions': None
        }
        headers = self.auth_headers
        headers['X-Roles'] = 'admin'
        self.post_json('/alarms', params=body, status=201,
                       headers=headers)
        alarms = list(self.alarm_conn.get_alarms(name='alarm_actions_none'))
        self.assertEqual(1, len(alarms))

        # FIXME(sileht): This should really returns [] not None
        # but the mongodb and sql just store the json dict as is...
        # migration script for sql will be a mess because we have
        # to parse all JSON :(
        # I guess we assume that wsme convert the None input to []
        # because of the array type, but it won't...
        self.assertIsNone(alarms[0].alarm_actions)

    def test_post_alarm_trust(self):
        json = {
            'name': 'added_alarm_defaults',
            'type': 'threshold',
            'ok_actions': ['trust+http://my.server:1234/foo'],
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        auth = mock.Mock()
        trust_client = mock.Mock()
        with mock.patch('aodh.keystone_client.get_v3_client') as client:
            client.return_value = mock.Mock(
                auth_ref=mock.Mock(user_id='my_user'))
            with mock.patch('keystoneclient.v3.client.Client') as sub_client:
                sub_client.return_value = trust_client
                trust_client.trusts.create.return_value = mock.Mock(id='5678')
                self.post_json('/alarms', params=json, status=201,
                               headers=self.auth_headers,
                               extra_environ={'keystone.token_auth': auth})
                trust_client.trusts.create.assert_called_once_with(
                    trustor_user=self.auth_headers['X-User-Id'],
                    trustee_user='my_user',
                    project=self.auth_headers['X-Project-Id'],
                    impersonation=True,
                    role_names=[])
        alarms = list(self.alarm_conn.get_alarms())
        for alarm in alarms:
            if alarm.name == 'added_alarm_defaults':
                self.assertEqual(
                    ['trust+http://5678:delete@my.server:1234/foo'],
                    alarm.ok_actions)
                break
        else:
            self.fail("Alarm not found")

        with mock.patch('aodh.keystone_client.get_v3_client') as client:
            client.return_value = mock.Mock(
                auth_ref=mock.Mock(user_id='my_user'))
            with mock.patch('keystoneclient.v3.client.Client') as sub_client:
                sub_client.return_value = trust_client
                self.delete('/alarms/%s' % alarm.alarm_id,
                            headers=self.auth_headers,
                            status=204,
                            extra_environ={'keystone.token_auth': auth})
                trust_client.trusts.delete.assert_called_once_with('5678')

    def test_put_alarm(self):
        json = {
            'enabled': False,
            'name': 'name_put',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        data = self.get_json('/alarms',
                             q=[{'field': 'name',
                                 'value': 'name1',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        self.put_json('/alarms/%s' % alarm_id,
                      params=json,
                      headers=self.auth_headers)
        alarm = list(self.alarm_conn.get_alarms(alarm_id=alarm_id,
                                                enabled=False))[0]
        json['threshold_rule']['query'].append({
            'field': 'project_id', 'op': 'eq',
            'value': self.auth_headers['X-Project-Id']})
        self._verify_alarm(json, alarm)

    def test_put_alarm_as_admin(self):
        json = {
            'user_id': 'myuserid',
            'project_id': 'myprojectid',
            'enabled': False,
            'name': 'name_put',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'},
                          {'field': 'project_id', 'op': 'eq',
                           'value': 'myprojectid'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'admin'

        data = self.get_json('/alarms',
                             headers=headers,
                             q=[{'field': 'name',
                                 'value': 'name1',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        self.put_json('/alarms/%s' % alarm_id,
                      params=json,
                      headers=headers)
        alarm = list(self.alarm_conn.get_alarms(alarm_id=alarm_id,
                                                enabled=False))[0]
        self.assertEqual('myuserid', alarm.user_id)
        self.assertEqual('myprojectid', alarm.project_id)
        self._verify_alarm(json, alarm)

    def test_put_alarm_wrong_field(self):
        json = {
            'this_can_not_be_correct': 'ha',
            'enabled': False,
            'name': 'name1',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        data = self.get_json('/alarms',
                             q=[{'field': 'name',
                                 'value': 'name1',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        resp = self.put_json('/alarms/%s' % alarm_id,
                             expect_errors=True,
                             params=json,
                             headers=self.auth_headers)
        self.assertEqual(400, resp.status_code)

    def test_put_alarm_with_existing_name(self):
        """Test that update a threshold alarm with an existing name."""
        json = {
            'enabled': False,
            'name': 'name1',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        data = self.get_json('/alarms',
                             q=[{'field': 'name',
                                 'value': 'name2',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        resp = self.put_json('/alarms/%s' % alarm_id,
                             expect_errors=True, status=409,
                             params=json,
                             headers=self.auth_headers)
        self.assertEqual(
            'Alarm with name=name1 exists',
            resp.json['error_message']['faultstring'])

    def test_put_invalid_alarm_actions(self):
        json = {
            'enabled': False,
            'name': 'name1',
            'state': 'ok',
            'type': 'threshold',
            'severity': 'critical',
            'ok_actions': ['spam://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.field',
                           'op': 'eq',
                           'value': '5',
                           'type': 'string'}],
                'comparison_operator': 'le',
                'statistic': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'period': 180,
            }
        }
        data = self.get_json('/alarms',
                             q=[{'field': 'name',
                                 'value': 'name2',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        resp = self.put_json('/alarms/%s' % alarm_id,
                             expect_errors=True, status=400,
                             params=json,
                             headers=self.auth_headers)
        self.assertEqual(
            'Unsupported action spam://something/ok',
            resp.json['error_message']['faultstring'])

    def test_put_alarm_trust(self):
        data = self._get_alarm('a')
        data.update({'ok_actions': ['trust+http://something/ok']})
        trust_client = mock.Mock()
        with mock.patch('aodh.keystone_client.get_v3_client') as client:
            client.return_value = mock.Mock(
                auth_ref=mock.Mock(user_id='my_user'))
            with mock.patch('keystoneclient.v3.client.Client') as sub_client:
                sub_client.return_value = trust_client
                trust_client.trusts.create.return_value = mock.Mock(id='5678')
                self.put_json('/alarms/%s' % data['alarm_id'],
                              params=data,
                              headers=self.auth_headers)
        data = self._get_alarm('a')
        self.assertEqual(
            ['trust+http://5678:delete@something/ok'], data['ok_actions'])

        data.update({'ok_actions': ['http://no-trust-something/ok']})

        with mock.patch('aodh.keystone_client.get_v3_client') as client:
            client.return_value = mock.Mock(
                auth_ref=mock.Mock(user_id='my_user'))
            with mock.patch('keystoneclient.v3.client.Client') as sub_client:
                sub_client.return_value = trust_client
                self.put_json('/alarms/%s' % data['alarm_id'],
                              params=data,
                              headers=self.auth_headers)
                trust_client.trusts.delete.assert_called_once_with('5678')

        data = self._get_alarm('a')
        self.assertEqual(
            ['http://no-trust-something/ok'], data['ok_actions'])

    def test_delete_alarm(self):
        data = self.get_json('/alarms')
        self.assertEqual(4, len(data))

        resp = self.delete('/alarms/%s' % data[0]['alarm_id'],
                           headers=self.auth_headers,
                           status=204)
        self.assertEqual(b'', resp.body)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(3, len(alarms))

    def test_get_state_alarm(self):
        data = self.get_json('/alarms')
        self.assertEqual(4, len(data))

        resp = self.get_json('/alarms/%s/state' % data[0]['alarm_id'],
                             headers=self.auth_headers)
        self.assertEqual(resp, data[0]['state'])

    def test_set_state_alarm(self):
        data = self.get_json('/alarms')
        self.assertEqual(4, len(data))

        resp = self.put_json('/alarms/%s/state' % data[0]['alarm_id'],
                             headers=self.auth_headers,
                             params='alarm')
        alarms = list(self.alarm_conn.get_alarms(alarm_id=data[0]['alarm_id']))
        self.assertEqual(1, len(alarms))
        self.assertEqual('alarm', alarms[0].state)
        self.assertEqual('alarm', resp.json)

    def test_set_invalid_state_alarm(self):
        data = self.get_json('/alarms')
        self.assertEqual(4, len(data))

        self.put_json('/alarms/%s/state' % data[0]['alarm_id'],
                      headers=self.auth_headers,
                      params='not valid',
                      status=400)

    def test_alarms_sends_notification(self):
        # Hit the AlarmsController ...
        json = {
            'name': 'sent_notification',
            'type': 'threshold',
            'severity': 'low',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 2.0,
                'statistic': 'avg',
            }

        }
        endpoint = mock.MagicMock()
        target = oslo_messaging.Target(topic="notifications")
        listener = messaging.get_notification_listener(
            self.transport, [target], [endpoint])
        listener.start()
        endpoint.info.side_effect = lambda *args: listener.stop()
        self.post_json('/alarms', params=json, headers=self.auth_headers)
        listener.wait()

        class PayloadMatcher(object):
            def __eq__(self, payload):
                return (payload['detail']['name'] == 'sent_notification' and
                        payload['type'] == 'creation' and
                        payload['detail']['rule']['meter_name'] == 'ameter' and
                        set(['alarm_id', 'detail', 'event_id', 'on_behalf_of',
                             'project_id', 'timestamp',
                             'user_id']).issubset(payload.keys()))

        endpoint.info.assert_called_once_with(
            {'resource_uuid': None,
             'domain': None,
             'project_domain': None,
             'auth_token': None,
             'is_admin': False,
             'user': None,
             'tenant': None,
             'read_only': False,
             'show_deleted': False,
             'user_identity': '- - - - -',
             'request_id': mock.ANY,
             'user_domain': None},
            'aodh.api', 'alarm.creation',
            PayloadMatcher(), mock.ANY)

    def test_alarm_sends_notification(self):
        with mock.patch.object(messaging, 'get_notifier') as get_notifier:
            notifier = get_notifier.return_value
            self._update_alarm('a', dict(name='new_name'))
            get_notifier.assert_called_once_with(mock.ANY,
                                                 publisher_id='aodh.api')
        calls = notifier.info.call_args_list
        self.assertEqual(1, len(calls))
        args, _ = calls[0]
        context, event_type, payload = args
        self.assertEqual('alarm.rule_change', event_type)
        self.assertEqual('new_name', payload['detail']['name'])
        self.assertTrue(set(['alarm_id', 'detail', 'event_id', 'on_behalf_of',
                             'project_id', 'timestamp', 'type',
                             'user_id']).issubset(payload.keys()))


class TestAlarmsHistory(TestAlarmsBase):

    def setUp(self):
        super(TestAlarmsHistory, self).setUp()
        alarm = models.Alarm(
            name='name1',
            type='threshold',
            enabled=True,
            alarm_id='a',
            description='a',
            state='insufficient data',
            severity='critical',
            state_timestamp=constants.MIN_DATETIME,
            timestamp=constants.MIN_DATETIME,
            ok_actions=[],
            insufficient_data_actions=[],
            alarm_actions=[],
            repeat_actions=True,
            user_id=self.auth_headers['X-User-Id'],
            project_id=self.auth_headers['X-Project-Id'],
            time_constraints=[dict(name='testcons',
                                   start='0 11 * * *',
                                   duration=300)],
            rule=dict(comparison_operator='gt',
                      threshold=2.0,
                      statistic='avg',
                      evaluation_periods=60,
                      period=1,
                      meter_name='meter.test',
                      query=[dict(field='project_id',
                                  op='eq',
                                  value=self.auth_headers['X-Project-Id'])
                             ]))
        self.alarm_conn.update_alarm(alarm)

    def _get_alarm_history(self, alarm_id, auth_headers=None, query=None,
                           expect_errors=False, status=200):
        url = '/alarms/%s/history' % alarm_id
        if query:
            url += '?q.op=%(op)s&q.value=%(value)s&q.field=%(field)s' % query
        resp = self.get_json(url,
                             headers=auth_headers or self.auth_headers,
                             expect_errors=expect_errors)
        if expect_errors:
            self.assertEqual(status, resp.status_code)
        return resp

    def _assert_is_subset(self, expected, actual):
        for k, v in six.iteritems(expected):
            self.assertEqual(v, actual.get(k), 'mismatched field: %s' % k)
        self.assertIsNotNone(actual['event_id'])

    def _assert_in_json(self, expected, actual):
        actual = jsonutils.dumps(jsonutils.loads(actual), sort_keys=True)
        for k, v in six.iteritems(expected):
            fragment = jsonutils.dumps({k: v}, sort_keys=True)[1:-1]
            self.assertIn(fragment, actual,
                          '%s not in %s' % (fragment, actual))

    def test_record_alarm_history_config(self):
        self.CONF.set_override('record_history', False)
        history = self._get_alarm_history('a')
        self.assertEqual([], history)
        self._update_alarm('a', dict(name='renamed'))
        history = self._get_alarm_history('a')
        self.assertEqual([], history)
        self.CONF.set_override('record_history', True)
        self._update_alarm('a', dict(name='foobar'))
        history = self._get_alarm_history('a')
        self.assertEqual(1, len(history))

    def test_record_alarm_history_severity(self):
        alarm = self._get_alarm('a')
        history = self._get_alarm_history('a')
        self.assertEqual([], history)
        self.assertEqual('critical', alarm['severity'])

        self._update_alarm('a', dict(severity='low'))
        new_alarm = self._get_alarm('a')
        history = self._get_alarm_history('a')
        self.assertEqual(1, len(history))
        self.assertEqual(jsonutils.dumps({'severity': 'low'}),
                         history[0]['detail'])
        self.assertEqual('low', new_alarm['severity'])

    def test_record_alarm_history_statistic(self):
        alarm = self._get_alarm('a')
        history = self._get_alarm_history('a')
        self.assertEqual([], history)
        self.assertEqual('avg', alarm['threshold_rule']['statistic'])

        rule = alarm['threshold_rule'].copy()
        rule['statistic'] = 'min'
        data = dict(threshold_rule=rule)
        self._update_alarm('a', data)
        new_alarm = self._get_alarm('a')
        history = self._get_alarm_history('a')
        self.assertEqual(1, len(history))
        self.assertEqual("min", jsonutils.loads(history[0]['detail'])
                         ['rule']["statistic"])
        self.assertEqual('min', new_alarm['threshold_rule']['statistic'])

    def test_get_recorded_alarm_history_on_create(self):
        new_alarm = {
            'name': 'new_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [],
                'comparison_operator': 'le',
                'statistic': 'max',
                'threshold': 42.0,
                'period': 60,
                'evaluation_periods': 1,
            }
        }
        self.post_json('/alarms', params=new_alarm, status=201,
                       headers=self.auth_headers)

        alarms = self.get_json('/alarms',
                               q=[{'field': 'name',
                                   'value': 'new_alarm',
                                   }])
        self.assertEqual(1, len(alarms))
        alarm = alarms[0]

        history = self._get_alarm_history(alarm['alarm_id'])
        self.assertEqual(1, len(history))
        self._assert_is_subset(dict(alarm_id=alarm['alarm_id'],
                                    on_behalf_of=alarm['project_id'],
                                    project_id=alarm['project_id'],
                                    type='creation',
                                    user_id=alarm['user_id']),
                               history[0])
        self._add_default_threshold_rule(new_alarm)
        new_alarm['rule'] = new_alarm['threshold_rule']
        del new_alarm['threshold_rule']
        new_alarm['rule']['query'].append({
            'field': 'project_id', 'op': 'eq',
            'value': self.auth_headers['X-Project-Id']})
        self._assert_in_json(new_alarm, history[0]['detail'])

    def _do_test_get_recorded_alarm_history_on_update(self,
                                                      data,
                                                      type,
                                                      detail,
                                                      auth=None):
        alarm = self._get_alarm('a')
        history = self._get_alarm_history('a')
        self.assertEqual([], history)
        self._update_alarm('a', data, auth)
        history = self._get_alarm_history('a')
        self.assertEqual(1, len(history))
        project_id = auth['X-Project-Id'] if auth else alarm['project_id']
        user_id = auth['X-User-Id'] if auth else alarm['user_id']
        self._assert_is_subset(dict(alarm_id=alarm['alarm_id'],
                                    detail=detail,
                                    on_behalf_of=alarm['project_id'],
                                    project_id=project_id,
                                    type=type,
                                    user_id=user_id),
                               history[0])

    def test_get_recorded_alarm_history_rule_change(self):
        data = dict(name='renamed')
        detail = '{"name": "renamed"}'
        self._do_test_get_recorded_alarm_history_on_update(data,
                                                           'rule change',
                                                           detail)

    def test_get_recorded_alarm_history_state_transition_on_behalf_of(self):
        # credentials for new non-admin user, on who's behalf the alarm
        # is created
        member_user = str(uuid.uuid4())
        member_project = str(uuid.uuid4())
        member_auth = {'X-Roles': 'member',
                       'X-User-Id': member_user,
                       'X-Project-Id': member_project}
        new_alarm = {
            'name': 'new_alarm',
            'type': 'threshold',
            'state': 'ok',
            'threshold_rule': {
                'meter_name': 'other_meter',
                'query': [{'field': 'project_id',
                           'op': 'eq',
                           'value': member_project}],
                'comparison_operator': 'le',
                'statistic': 'max',
                'threshold': 42.0,
                'evaluation_periods': 1,
                'period': 60
            }
        }
        self.post_json('/alarms', params=new_alarm, status=201,
                       headers=member_auth)
        alarm = self.get_json('/alarms', headers=member_auth)[0]

        # effect a state transition as a new administrative user
        admin_user = str(uuid.uuid4())
        admin_project = str(uuid.uuid4())
        admin_auth = {'X-Roles': 'admin',
                      'X-User-Id': admin_user,
                      'X-Project-Id': admin_project}
        data = dict(state='alarm')
        self._update_alarm(alarm['alarm_id'], data, auth_headers=admin_auth)

        self._add_default_threshold_rule(new_alarm)
        new_alarm['rule'] = new_alarm['threshold_rule']
        del new_alarm['threshold_rule']

        # ensure that both the creation event and state transition
        # are visible to the non-admin alarm owner and admin user alike
        for auth in [member_auth, admin_auth]:
            history = self._get_alarm_history(alarm['alarm_id'],
                                              auth_headers=auth)
            self.assertEqual(2, len(history), 'hist: %s' % history)
            self._assert_is_subset(dict(alarm_id=alarm['alarm_id'],
                                        detail='{"state": "alarm"}',
                                        on_behalf_of=alarm['project_id'],
                                        project_id=admin_project,
                                        type='rule change',
                                        user_id=admin_user),
                                   history[0])
            self._assert_is_subset(dict(alarm_id=alarm['alarm_id'],
                                        on_behalf_of=alarm['project_id'],
                                        project_id=member_project,
                                        type='creation',
                                        user_id=member_user),
                                   history[1])
            self._assert_in_json(new_alarm, history[1]['detail'])

            # ensure on_behalf_of cannot be constrained in an API call
            query = dict(field='on_behalf_of',
                         op='eq',
                         value=alarm['project_id'])
            self._get_alarm_history(alarm['alarm_id'], auth_headers=auth,
                                    query=query, expect_errors=True,
                                    status=400)

    def test_get_recorded_alarm_history_segregation(self):
        data = dict(name='renamed')
        detail = '{"name": "renamed"}'
        self._do_test_get_recorded_alarm_history_on_update(data,
                                                           'rule change',
                                                           detail)
        auth = {'X-Roles': 'member',
                'X-User-Id': str(uuid.uuid4()),
                'X-Project-Id': str(uuid.uuid4())}
        history = self._get_alarm_history('a', auth)
        self.assertEqual([], history)

    def test_delete_alarm_history_after_deletion(self):
        history = self._get_alarm_history('a')
        self.assertEqual([], history)
        self._update_alarm('a', dict(name='renamed'))
        history = self._get_alarm_history('a')
        self.assertEqual(1, len(history))
        self.delete('/alarms/%s' % 'a',
                    headers=self.auth_headers,
                    status=204)
        history = self._get_alarm_history('a')
        self.assertEqual(0, len(history))

    def test_get_alarm_history_ordered_by_recentness(self):
        for i in moves.xrange(10):
            self._update_alarm('a', dict(name='%s' % i))
        history = self._get_alarm_history('a')
        self.assertEqual(10, len(history), 'hist: %s' % history)
        self._assert_is_subset(dict(alarm_id='a',
                                    type='rule change'),
                               history[0])
        for i in moves.xrange(1, 11):
            detail = '{"name": "%s"}' % (10 - i)
            self._assert_is_subset(dict(alarm_id='a',
                                        detail=detail,
                                        type='rule change'),
                                   history[i - 1])

    def test_get_alarm_history_constrained_by_timestamp(self):
        alarm = self._get_alarm('a')
        self._update_alarm('a', dict(name='renamed'))
        after = datetime.datetime.utcnow().isoformat()
        query = dict(field='timestamp', op='gt', value=after)
        history = self._get_alarm_history('a', query=query)
        self.assertEqual(0, len(history))
        query['op'] = 'le'
        history = self._get_alarm_history('a', query=query)
        self.assertEqual(1, len(history))
        detail = '{"name": "renamed"}'
        self._assert_is_subset(dict(alarm_id=alarm['alarm_id'],
                                    detail=detail,
                                    on_behalf_of=alarm['project_id'],
                                    project_id=alarm['project_id'],
                                    type='rule change',
                                    user_id=alarm['user_id']),
                               history[0])

    def test_get_alarm_history_constrained_by_type(self):
        alarm = self._get_alarm('a')
        self._update_alarm('a', dict(name='renamed2'))
        query = dict(field='type', op='eq', value='rule change')
        history = self._get_alarm_history('a', query=query)
        self.assertEqual(1, len(history))
        detail = '{"name": "renamed2"}'
        self._assert_is_subset(dict(alarm_id=alarm['alarm_id'],
                                    detail=detail,
                                    on_behalf_of=alarm['project_id'],
                                    project_id=alarm['project_id'],
                                    type='rule change',
                                    user_id=alarm['user_id']),
                               history[0])

    def test_get_alarm_history_constrained_by_alarm_id_failed(self):
        query = dict(field='alarm_id', op='eq', value='a')
        resp = self._get_alarm_history('a', query=query,
                                       expect_errors=True, status=400)
        msg = ('Unknown argument: "alarm_id": unrecognized'
               " field in query: [<Query {key!r} eq"
               " {value!r} Unset>], valid keys: ['project', "
               "'search_offset', 'severity', 'timestamp',"
               " 'type', 'user']")
        msg = msg.format(key=u'alarm_id', value=u'a')
        self.assertEqual(msg,
                         resp.json['error_message']['faultstring'])

    def test_get_alarm_history_constrained_by_not_supported_rule(self):
        query = dict(field='abcd', op='eq', value='abcd')
        resp = self._get_alarm_history('a', query=query,
                                       expect_errors=True, status=400)
        msg = ('Unknown argument: "abcd": unrecognized'
               " field in query: [<Query {key!r} eq"
               " {value!r} Unset>], valid keys: ['project', "
               "'search_offset', 'severity', 'timestamp',"
               " 'type', 'user']")
        msg = msg.format(key=u'abcd', value=u'abcd')
        self.assertEqual(msg,
                         resp.json['error_message']['faultstring'])

    def test_get_alarm_history_constrained_by_severity(self):
        self._update_alarm('a', dict(severity='low'))
        query = dict(field='severity', op='eq', value='low')
        history = self._get_alarm_history('a', query=query)
        self.assertEqual(1, len(history))
        self.assertEqual(jsonutils.dumps({'severity': 'low'}),
                         history[0]['detail'])

    def test_get_nonexistent_alarm_history(self):
        # the existence of alarm history is independent of the
        # continued existence of the alarm itself
        history = self._get_alarm_history('foobar')
        self.assertEqual([], history)


class TestAlarmsQuotas(TestAlarmsBase):

    def _test_alarm_quota(self):
        alarm = {
            'name': 'alarm',
            'type': 'threshold',
            'user_id': self.auth_headers['X-User-Id'],
            'project_id': self.auth_headers['X-Project-Id'],
            'threshold_rule': {
                'meter_name': 'testmeter',
                'query': [],
                'comparison_operator': 'le',
                'statistic': 'max',
                'threshold': 42.0,
                'period': 60,
                'evaluation_periods': 1,
            }
        }

        resp = self.post_json('/alarms', params=alarm,
                              headers=self.auth_headers)
        self.assertEqual(201, resp.status_code)
        alarms = self.get_json('/alarms')
        self.assertEqual(1, len(alarms))

        alarm['name'] = 'another_user_alarm'
        resp = self.post_json('/alarms', params=alarm,
                              expect_errors=True,
                              headers=self.auth_headers)
        self.assertEqual(403, resp.status_code)
        faultstring = 'Alarm quota exceeded for user'
        self.assertIn(faultstring,
                      resp.json['error_message']['faultstring'])

        alarms = self.get_json('/alarms')
        self.assertEqual(1, len(alarms))

    def test_alarms_quotas(self):
        self.CONF.set_override('user_alarm_quota', 1)
        self.CONF.set_override('project_alarm_quota', 1)
        self._test_alarm_quota()

    def test_project_alarms_quotas(self):
        self.CONF.set_override('project_alarm_quota', 1)
        self._test_alarm_quota()

    def test_user_alarms_quotas(self):
        self.CONF.set_override('user_alarm_quota', 1)
        self._test_alarm_quota()

    def test_larger_limit_project_alarms_quotas(self):
        self.CONF.set_override('user_alarm_quota', 1)
        self.CONF.set_override('project_alarm_quota', 2)
        self._test_alarm_quota()

    def test_larger_limit_user_alarms_quotas(self):
        self.CONF.set_override('user_alarm_quota', 2)
        self.CONF.set_override('project_alarm_quota', 1)
        self._test_alarm_quota()

    def test_larger_limit_user_alarm_quotas_multitenant_user(self):
        self.CONF.set_override('user_alarm_quota', 2)
        self.CONF.set_override('project_alarm_quota', 1)

        def _test(field, value):
            query = [{
                'field': field,
                'op': 'eq',
                'value': value
            }]
            alarms = self.get_json('/alarms', q=query)
            self.assertEqual(1, len(alarms))

        alarm = {
            'name': 'alarm',
            'type': 'threshold',
            'user_id': self.auth_headers['X-User-Id'],
            'project_id': self.auth_headers['X-Project-Id'],
            'threshold_rule': {
                'meter_name': 'testmeter',
                'query': [],
                'comparison_operator': 'le',
                'statistic': 'max',
                'threshold': 42.0,
                'period': 60,
                'evaluation_periods': 1,
            }
        }

        resp = self.post_json('/alarms', params=alarm,
                              headers=self.auth_headers)

        self.assertEqual(201, resp.status_code)
        _test('project_id', self.auth_headers['X-Project-Id'])

        self.auth_headers['X-Project-Id'] = str(uuid.uuid4())
        alarm['name'] = 'another_user_alarm'
        alarm['project_id'] = self.auth_headers['X-Project-Id']
        resp = self.post_json('/alarms', params=alarm,
                              headers=self.auth_headers)

        self.assertEqual(201, resp.status_code)
        _test('project_id', self.auth_headers['X-Project-Id'])

        alarms = self.get_json('/alarms')
        self.assertEqual(2, len(alarms))


class TestAlarmsRuleThreshold(TestAlarmsBase):

    def test_post_invalid_alarm_statistic(self):
        json = {
            'name': 'added_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'gt',
                'threshold': 2.0,
                'statistic': 'magic',
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = ("Invalid input for field/attribute"
                            " statistic. Value: 'magic'.")
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))

    def test_post_invalid_alarm_input_comparison_operator(self):
        json = {
            'name': 'alarm2',
            'state': 'ok',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'comparison_operator': 'bad_co',
                'threshold': 50.0
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = ("Invalid input for field/attribute"
                            " comparison_operator."
                            " Value: 'bad_co'.")
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))

    def test_post_invalid_alarm_query(self):
        json = {
            'name': 'added_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.invalid',
                           'field': 'gt',
                           'value': 'value'}],
                'comparison_operator': 'gt',
                'threshold': 2.0,
                'statistic': 'avg',
            }
        }
        self.post_json('/alarms', params=json, expect_errors=True, status=400,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))

    def test_post_invalid_alarm_query_field_type(self):
        json = {
            'name': 'added_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.valid',
                           'op': 'eq',
                           'value': 'value',
                           'type': 'blob'}],
                'comparison_operator': 'gt',
                'threshold': 2.0,
                'statistic': 'avg',
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_error_message = 'The data type blob is not supported.'
        resp_string = jsonutils.loads(resp.body)
        fault_string = resp_string['error_message']['faultstring']
        self.assertTrue(fault_string.startswith(expected_error_message))
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))

    def test_post_invalid_alarm_query_non_field(self):
        json = {
            'name': 'added_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'q.field': 'metadata.valid',
                           'value': 'value'}],
                'threshold': 2.0,
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_error_message = ("Unknown attribute for argument "
                                  "data.threshold_rule.query: q.field")
        fault_string = resp.json['error_message']['faultstring']
        self.assertEqual(expected_error_message, fault_string)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))

    def test_post_invalid_alarm_query_non_value(self):
        json = {
            'name': 'added_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'metadata.valid',
                           'q.value': 'value'}],
                'threshold': 2.0,
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_error_message = ("Unknown attribute for argument "
                                  "data.threshold_rule.query: q.value")
        fault_string = resp.json['error_message']['faultstring']
        self.assertEqual(expected_error_message, fault_string)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))

    def test_post_invalid_alarm_timestamp_in_threshold_rule(self):
        date_time = datetime.datetime(2012, 7, 2, 10, 41)
        isotime = date_time.isoformat()

        json = {
            'name': 'invalid_alarm',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'timestamp',
                           'op': 'gt',
                           'value': isotime}],
                'comparison_operator': 'gt',
                'threshold': 2.0,
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(0, len(alarms))
        self.assertEqual(
            'Unknown argument: "timestamp": '
            'not valid for this resource',
            resp.json['error_message']['faultstring'])

    def test_post_threshold_rule_defaults(self):
        to_check = {
            'name': 'added_alarm_defaults',
            'state': 'insufficient data',
            'description': ('Alarm when ameter is eq a avg of '
                            '300.0 over 60 seconds'),
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'query': [{'field': 'project_id',
                           'op': 'eq',
                           'value': self.auth_headers['X-Project-Id']}],
                'threshold': 300.0,
                'comparison_operator': 'eq',
                'statistic': 'avg',
                'evaluation_periods': 1,
                'period': 60,
            }

        }
        self._add_default_threshold_rule(to_check)

        json = {
            'name': 'added_alarm_defaults',
            'type': 'threshold',
            'threshold_rule': {
                'meter_name': 'ameter',
                'threshold': 300.0
            }
        }
        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(1, len(alarms))
        for alarm in alarms:
            if alarm.name == 'added_alarm_defaults':
                for key in to_check:
                    if key.endswith('_rule'):
                        storage_key = 'rule'
                    else:
                        storage_key = key
                    self.assertEqual(to_check[key],
                                     getattr(alarm, storage_key))
                break
        else:
            self.fail("Alarm not found")


class TestAlarmsRuleCombination(TestAlarmsBase):

    def setUp(self):
        super(TestAlarmsRuleCombination, self).setUp()
        for alarm in default_alarms(self.auth_headers):
            self.alarm_conn.update_alarm(alarm)

    def test_get_alarm_combination(self):
        alarms = self.get_json('/alarms',
                               q=[{'field': 'name',
                                   'value': 'name4',
                                   }])
        self.assertEqual('name4', alarms[0]['name'])
        self.assertEqual(['a', 'b'],
                         alarms[0]['combination_rule']['alarm_ids'])
        self.assertEqual('or', alarms[0]['combination_rule']['operator'])

        one = self.get_json('/alarms/%s' % alarms[0]['alarm_id'])
        self.assertEqual('name4', one['name'])
        self.assertEqual(['a', 'b'],
                         alarms[0]['combination_rule']['alarm_ids'])
        self.assertEqual('or', alarms[0]['combination_rule']['operator'])
        self.assertEqual(alarms[0]['alarm_id'], one['alarm_id'])
        self.assertEqual(alarms[0]['repeat_actions'], one['repeat_actions'])

    def test_post_alarm_combination(self):
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['a',
                              'b'],
                'operator': 'and',
            }
        }
        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        if alarms[0].name == 'added_alarm':
            for key in json:
                if key.endswith('_rule'):
                    storage_key = 'rule'
                else:
                    storage_key = key
                self.assertEqual(json[key], getattr(alarms[0], storage_key))
        else:
            self.fail("Alarm not found")

    def test_post_invalid_alarm_combination(self):
        """Test that post a combination alarm with a not existing alarm id."""
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['not_exists',
                              'b'],
                'operator': 'and',
            }
        }
        self.post_json('/alarms', params=json, status=404,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(0, len(alarms))

    def test_post_invalid_combination_alarm_input_operator(self):
        json = {
            'enabled': False,
            'name': 'alarm6',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['a',
                              'b'],
                'operator': 'bad_operator',
            }
        }
        resp = self.post_json('/alarms', params=json, expect_errors=True,
                              status=400, headers=self.auth_headers)
        expected_err_msg = ("Invalid input for field/attribute"
                            " operator."
                            " Value: 'bad_operator'.")
        self.assertIn(expected_err_msg,
                      resp.json['error_message']['faultstring'])
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(4, len(alarms))

    def test_post_combination_alarm_as_user_with_unauthorized_alarm(self):
        """Test posting a combination alarm.

        Test that post a combination alarm as normal user/project
        with an alarm_id unauthorized for this project/user
        """
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['a',
                              'b'],
                'operator': 'and',
            }
        }
        an_other_user_auth = {'X-User-Id': str(uuid.uuid4()),
                              'X-Project-Id': str(uuid.uuid4())}
        resp = self.post_json('/alarms', params=json, status=404,
                              headers=an_other_user_auth)
        self.assertEqual("Alarm a not found in project "
                         "%s" %
                         an_other_user_auth['X-Project-Id'],
                         jsonutils.loads(resp.body)['error_message']
                         ['faultstring'])

    def test_post_combination_alarm_as_admin_on_behalf_of_an_other_user(self):
        """Test posting a combination alarm.

        Test that post a combination alarm as admin on behalf of an other
        user/project with an alarm_id unauthorized for this project/user
        """
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'user_id': 'auseridthatisnotmine',
            'project_id': 'aprojectidthatisnotmine',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['a',
                              'b'],
                'operator': 'and',
            }
        }

        headers = {}
        headers.update(self.auth_headers)
        headers['X-Roles'] = 'admin'
        resp = self.post_json('/alarms', params=json, status=404,
                              headers=headers)
        self.assertEqual("Alarm a not found in project "
                         "aprojectidthatisnotmine",
                         jsonutils.loads(resp.body)['error_message']
                         ['faultstring'])

    def test_post_combination_alarm_with_reasonable_description(self):
        """Test posting a combination alarm.

        Test that post a combination alarm with two blanks around the
        operator in alarm description.
        """
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['a',
                              'b'],
                'operator': 'and',
            }
        }
        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self.assertEqual(u'Combined state of alarms a and b',
                         alarms[0].description)

    def _do_post_combination_alarm_as_admin_success(self, owner_is_set):
        """Test posting a combination alarm.

        Test that post a combination alarm as admin on behalf of nobody
        with an alarm_id of someone else, with owner set or not
        """
        json = {
            'enabled': False,
            'name': 'added_alarm',
            'state': 'ok',
            'type': 'combination',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'combination_rule': {
                'alarm_ids': ['a',
                              'b'],
                'operator': 'and',
            }
        }
        an_other_admin_auth = {'X-User-Id': str(uuid.uuid4()),
                               'X-Project-Id': str(uuid.uuid4()),
                               'X-Roles': 'admin'}
        if owner_is_set:
            json['project_id'] = an_other_admin_auth['X-Project-Id']
            json['user_id'] = an_other_admin_auth['X-User-Id']

        self.post_json('/alarms', params=json, status=201,
                       headers=an_other_admin_auth)
        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        if alarms[0].name == 'added_alarm':
            for key in json:
                if key.endswith('_rule'):
                    storage_key = 'rule'
                else:
                    storage_key = key
                self.assertEqual(json[key], getattr(alarms[0], storage_key))
        else:
            self.fail("Alarm not found")

    def test_post_combination_alarm_as_admin_success_owner_unset(self):
        self._do_post_combination_alarm_as_admin_success(False)

    def test_post_combination_alarm_as_admin_success_owner_set(self):
        self._do_post_combination_alarm_as_admin_success(True)

    def test_post_alarm_combination_duplicate_alarm_ids(self):
        """Test combination alarm doesn't allow duplicate alarm ids."""
        json_body = {
            'name': 'dup_alarm_id',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['a', 'a', 'd', 'a', 'c', 'c', 'b'],
            }
        }
        self.post_json('/alarms', params=json_body, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms(name='dup_alarm_id'))
        self.assertEqual(1, len(alarms))
        self.assertEqual(['a', 'd', 'c', 'b'],
                         alarms[0].rule.get('alarm_ids'))

    def _test_post_alarm_combination_rule_less_than_two_alarms(self,
                                                               alarm_ids=None):
        json_body = {
            'name': 'one_alarm_in_combination_rule',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': alarm_ids or []
            }
        }

        resp = self.post_json('/alarms', params=json_body,
                              expect_errors=True, status=400,
                              headers=self.auth_headers)
        self.assertEqual(
            'Alarm combination rule should contain at'
            ' least two different alarm ids.',
            resp.json['error_message']['faultstring'])

    def test_post_alarm_combination_rule_with_no_alarm(self):
        self._test_post_alarm_combination_rule_less_than_two_alarms()

    def test_post_alarm_combination_rule_with_one_alarm(self):
        self._test_post_alarm_combination_rule_less_than_two_alarms(['a'])

    def test_post_alarm_combination_rule_with_two_same_alarms(self):
        self._test_post_alarm_combination_rule_less_than_two_alarms(['a',
                                                                     'a'])

    def test_put_alarm_combination_cannot_specify_itself(self):
        json = {
            'name': 'name4',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['d', 'a'],
            }
        }

        data = self.get_json('/alarms',
                             q=[{'field': 'name',
                                 'value': 'name4',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        resp = self.put_json('/alarms/%s' % alarm_id,
                             expect_errors=True, status=400,
                             params=json,
                             headers=self.auth_headers)

        msg = 'Cannot specify alarm %s itself in combination rule' % alarm_id
        self.assertEqual(msg, resp.json['error_message']['faultstring'])

    def _test_put_alarm_combination_rule_less_than_two_alarms(self,
                                                              alarm_ids=None):
        json_body = {
            'name': 'name4',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': alarm_ids or []
            }
        }

        data = self.get_json('/alarms',
                             q=[{'field': 'name',
                                 'value': 'name4',
                                 }])
        self.assertEqual(1, len(data))
        alarm_id = data[0]['alarm_id']

        resp = self.put_json('/alarms/%s' % alarm_id, params=json_body,
                             expect_errors=True, status=400,
                             headers=self.auth_headers)
        self.assertEqual(
            'Alarm combination rule should contain at'
            ' least two different alarm ids.',
            resp.json['error_message']['faultstring'])

    def test_put_alarm_combination_rule_with_no_alarm(self):
        self._test_put_alarm_combination_rule_less_than_two_alarms()

    def test_put_alarm_combination_rule_with_one_alarm(self):
        self._test_put_alarm_combination_rule_less_than_two_alarms(['a'])

    def test_put_alarm_combination_rule_with_two_same_alarm_itself(self):
        self._test_put_alarm_combination_rule_less_than_two_alarms(['d',
                                                                    'd'])

    def test_put_combination_alarm_with_duplicate_ids(self):
        """Test combination alarm doesn't allow duplicate alarm ids."""
        alarms = self.get_json('/alarms',
                               q=[{'field': 'name',
                                   'value': 'name4',
                                   }])
        self.assertEqual(1, len(alarms))
        alarm_id = alarms[0]['alarm_id']

        json_body = {
            'name': 'name4',
            'type': 'combination',
            'combination_rule': {
                'alarm_ids': ['c', 'a', 'b', 'a', 'c', 'b'],
            }
        }
        self.put_json('/alarms/%s' % alarm_id,
                      params=json_body, status=200,
                      headers=self.auth_headers)

        alarms = list(self.alarm_conn.get_alarms(alarm_id=alarm_id))
        self.assertEqual(1, len(alarms))
        self.assertEqual(['c', 'a', 'b'], alarms[0].rule.get('alarm_ids'))


class TestAlarmsRuleGnocchi(TestAlarmsBase):

    def setUp(self):
        super(TestAlarmsRuleGnocchi, self).setUp()
        for alarm in [
            models.Alarm(name='name1',
                         type='gnocchi_resources_threshold',
                         enabled=True,
                         alarm_id='e',
                         description='e',
                         state='insufficient data',
                         severity='critical',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=True,
                         user_id=self.auth_headers['X-User-Id'],
                         project_id=self.auth_headers['X-Project-Id'],
                         time_constraints=[],
                         rule=dict(comparison_operator='gt',
                                   threshold=2.0,
                                   aggregation_method='mean',
                                   granularity=60,
                                   evaluation_periods=1,
                                   metric='meter.test',
                                   resource_type='instance',
                                   resource_id=(
                                       '6841c175-d7c4-4bc2-bc7a-1c7832271b8f'),
                                   )
                         ),
            models.Alarm(name='name2',
                         type='gnocchi_aggregation_by_metrics_threshold',
                         enabled=True,
                         alarm_id='f',
                         description='f',
                         state='insufficient data',
                         severity='critical',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=True,
                         user_id=self.auth_headers['X-User-Id'],
                         project_id=self.auth_headers['X-Project-Id'],
                         time_constraints=[],
                         rule=dict(comparison_operator='gt',
                                   threshold=2.0,
                                   aggregation_method='mean',
                                   evaluation_periods=1,
                                   granularity=60,
                                   metrics=[
                                       '41869681-5776-46d6-91ed-cccc43b6e4e3',
                                       'a1fb80f4-c242-4f57-87c6-68f47521059e']
                                   ),
                         ),
            models.Alarm(name='name3',
                         type='gnocchi_aggregation_by_resources_threshold',
                         enabled=True,
                         alarm_id='g',
                         description='f',
                         state='insufficient data',
                         severity='critical',
                         state_timestamp=constants.MIN_DATETIME,
                         timestamp=constants.MIN_DATETIME,
                         ok_actions=[],
                         insufficient_data_actions=[],
                         alarm_actions=[],
                         repeat_actions=True,
                         user_id=self.auth_headers['X-User-Id'],
                         project_id=self.auth_headers['X-Project-Id'],
                         time_constraints=[],
                         rule=dict(comparison_operator='gt',
                                   threshold=2.0,
                                   aggregation_method='mean',
                                   granularity=60,
                                   evaluation_periods=1,
                                   metric='meter.test',
                                   resource_type='instance',
                                   query='{"=": {"server_group": '
                                   '"my_autoscaling_group"}}')
                         ),

                ]:

            self.alarm_conn.update_alarm(alarm)

    def test_list_alarms(self):
        data = self.get_json('/alarms')
        self.assertEqual(3, len(data))
        self.assertEqual(set(['name1', 'name2', 'name3']),
                         set(r['name'] for r in data))
        self.assertEqual(set(['meter.test']),
                         set(r['gnocchi_resources_threshold_rule']['metric']
                             for r in data
                             if 'gnocchi_resources_threshold_rule' in r))

    @mock.patch('aodh.keystone_client.get_client')
    def test_post_gnocchi_resources_alarm(self, __):
        json = {
            'enabled': False,
            'name': 'name_post',
            'state': 'ok',
            'type': 'gnocchi_resources_threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'gnocchi_resources_threshold_rule': {
                'metric': 'ameter',
                'comparison_operator': 'le',
                'aggregation_method': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'granularity': 180,
                'resource_type': 'instance',
                'resource_id': '209ef69c-c10c-4efb-90ff-46f4b2d90d2e',
            }
        }

        with mock.patch('requests.get',
                        side_effect=requests.ConnectionError()):
            resp = self.post_json('/alarms', params=json,
                                  headers=self.auth_headers,
                                  expect_errors=True)
            self.assertEqual(503, resp.status_code, resp.body)

        with mock.patch('requests.get',
                        return_value=mock.Mock(status_code=500,
                                               body="my_custom_error",
                                               text="my_custom_error")):
            resp = self.post_json('/alarms', params=json,
                                  headers=self.auth_headers,
                                  expect_errors=True)
            self.assertEqual(503, resp.status_code, resp.body)
            self.assertIn('my_custom_error',
                          resp.json['error_message']['faultstring'])

        cap_result = mock.Mock(status_code=201,
                               text=jsonutils.dumps(
                                   {'aggregation_methods': ['count']}))
        resource_result = mock.Mock(status_code=200, text="blob")
        with mock.patch('requests.get', side_effect=[cap_result,
                                                     resource_result]
                        ) as gnocchi_get:
            self.post_json('/alarms', params=json, headers=self.auth_headers)

            gnocchi_url = self.CONF.gnocchi_url
            capabilities_url = urlparse.urljoin(gnocchi_url,
                                                '/v1/capabilities')
            resource_url = urlparse.urljoin(
                gnocchi_url,
                '/v1/resource/instance/209ef69c-c10c-4efb-90ff-46f4b2d90d2e'
            )

            expected = [mock.call(capabilities_url,
                                  headers=mock.ANY),
                        mock.call(resource_url,
                                  headers=mock.ANY)]
            self.assertEqual(expected, gnocchi_get.mock_calls)

        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self._verify_alarm(json, alarms[0])

    @mock.patch('aodh.keystone_client.get_client')
    def test_post_gnocchi_metrics_alarm(self, __):
        json = {
            'enabled': False,
            'name': 'name_post',
            'state': 'ok',
            'type': 'gnocchi_aggregation_by_metrics_threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'gnocchi_aggregation_by_metrics_threshold_rule': {
                'metrics': ['b3d9d8ab-05e8-439f-89ad-5e978dd2a5eb',
                            '009d4faf-c275-46f0-8f2d-670b15bac2b0'],
                'comparison_operator': 'le',
                'aggregation_method': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'granularity': 180,
            }
        }

        cap_result = mock.Mock(status_code=200,
                               text=jsonutils.dumps(
                                   {'aggregation_methods': ['count']}))
        with mock.patch('requests.get', return_value=cap_result):
            self.post_json('/alarms', params=json, headers=self.auth_headers)

        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))
        self._verify_alarm(json, alarms[0])

    @mock.patch('aodh.keystone_client.get_client')
    def test_post_gnocchi_aggregation_alarm_project_constraint(self, __):
        self.CONF.set_override('gnocchi_url', 'http://localhost:8041')
        json = {
            'enabled': False,
            'name': 'project_constraint',
            'state': 'ok',
            'type': 'gnocchi_aggregation_by_resources_threshold',
            'severity': 'critical',
            'ok_actions': ['http://something/ok'],
            'alarm_actions': ['http://something/alarm'],
            'insufficient_data_actions': ['http://something/no'],
            'repeat_actions': True,
            'gnocchi_aggregation_by_resources_threshold_rule': {
                'metric': 'ameter',
                'comparison_operator': 'le',
                'aggregation_method': 'count',
                'threshold': 50,
                'evaluation_periods': 3,
                'granularity': 180,
                'resource_type': 'instance',
                'query': '{"=": {"server_group": "my_autoscaling_group"}}',
            }
        }

        cap_result = mock.Mock(status_code=201,
                               text=jsonutils.dumps(
                                   {'aggregation_methods': ['count']}))
        resource_result = mock.Mock(status_code=200, text="blob")
        query_check_result = mock.Mock(status_code=200, text="blob")

        expected_query = ('{"and": [{"=": {"created_by_project_id": "%s"}}, '
                          '{"=": {"server_group": "my_autoscaling_group"}}]}' %
                          self.auth_headers['X-Project-Id'])

        with mock.patch('requests.get',
                        side_effect=[cap_result, resource_result]):
            with mock.patch('requests.post',
                            side_effect=[query_check_result]) as fake_post:

                self.post_json('/alarms', params=json,
                               headers=self.auth_headers)

                self.assertEqual([mock.call(
                    url=('http://localhost:8041/v1/aggregation/'
                         'resource/instance/metric/ameter'),
                    headers={'Content-Type': 'application/json',
                             'X-Auth-Token': mock.ANY},
                    params={'aggregation': 'count',
                            'needed_overlap': 0},
                    data=expected_query)],
                    fake_post.mock_calls),

        alarms = list(self.alarm_conn.get_alarms(enabled=False))
        self.assertEqual(1, len(alarms))

        json['gnocchi_aggregation_by_resources_threshold_rule']['query'] = (
            expected_query)
        self._verify_alarm(json, alarms[0])


class TestAlarmsEvent(TestAlarmsBase):

    def test_list_alarms(self):
        alarm = models.Alarm(name='event.alarm.1',
                             type='event',
                             enabled=True,
                             alarm_id='h',
                             description='h',
                             state='insufficient data',
                             severity='moderate',
                             state_timestamp=constants.MIN_DATETIME,
                             timestamp=constants.MIN_DATETIME,
                             ok_actions=[],
                             insufficient_data_actions=[],
                             alarm_actions=[],
                             repeat_actions=False,
                             user_id=self.auth_headers['X-User-Id'],
                             project_id=self.auth_headers['X-Project-Id'],
                             time_constraints=[],
                             rule=dict(event_type='event.test',
                                       query=[]),
                             )
        self.alarm_conn.update_alarm(alarm)

        data = self.get_json('/alarms')
        self.assertEqual(1, len(data))
        self.assertEqual(set(['event.alarm.1']),
                         set(r['name'] for r in data))
        self.assertEqual(set(['event.test']),
                         set(r['event_rule']['event_type']
                             for r in data if 'event_rule' in r))

    def test_post_event_alarm_defaults(self):
        to_check = {
            'enabled': True,
            'name': 'added_alarm_defaults',
            'state': 'insufficient data',
            'description': 'Alarm when * event occurred.',
            'type': 'event',
            'ok_actions': [],
            'alarm_actions': [],
            'insufficient_data_actions': [],
            'repeat_actions': False,
            'rule': {
                'event_type': '*',
                'query': [],
            }
        }

        json = {
            'name': 'added_alarm_defaults',
            'type': 'event',
            'event_rule': {
                'event_type': '*',
                'query': []
            }
        }
        self.post_json('/alarms', params=json, status=201,
                       headers=self.auth_headers)
        alarms = list(self.alarm_conn.get_alarms())
        self.assertEqual(1, len(alarms))
        for alarm in alarms:
            if alarm.name == 'added_alarm_defaults':
                for key in to_check:
                    self.assertEqual(to_check[key], getattr(alarm, key))
                break
        else:
            self.fail("Alarm not found")
