315 lines
12 KiB
Python
315 lines
12 KiB
Python
# Copyright 2014 Hewlett-Packard
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import json
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import re
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import falcon
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from oslo.config import cfg
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from monasca.api.alarms_api_v2 import AlarmsV2API
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from monasca.common.repositories import exceptions
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from monasca.common import resource_api
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from monasca.openstack.common import log
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from monasca.v2.reference.alarming import Alarming
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from monasca.v2.reference import helpers
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from monasca.v2.reference.resource import resource_try_catch_block
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LOG = log.getLogger(__name__)
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class Alarms(AlarmsV2API, Alarming):
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def __init__(self, global_conf):
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try:
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super(Alarms, self).__init__(global_conf)
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self._region = cfg.CONF.region
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self._default_authorized_roles = (
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cfg.CONF.security.default_authorized_roles)
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self._delegate_authorized_roles = (
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cfg.CONF.security.delegate_authorized_roles)
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self._post_metrics_authorized_roles = (
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cfg.CONF.security.default_authorized_roles +
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cfg.CONF.security.agent_authorized_roles)
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self._alarms_repo = resource_api.init_driver(
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'monasca.repositories', cfg.CONF.repositories.alarms_driver)
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self._metrics_repo = resource_api.init_driver(
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'monasca.repositories', cfg.CONF.repositories.metrics_driver)
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except Exception as ex:
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LOG.exception(ex)
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raise exceptions.RepositoryException(ex)
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@resource_api.Restify('/v2.0/alarms/{id}', method='put')
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def do_put_alarms(self, req, res, id):
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helpers.validate_authorization(req, self._default_authorized_roles)
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tenant_id = helpers.get_tenant_id(req)
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state = self._get_alarm_state(req)
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self._alarm_update(tenant_id, id, state)
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result = self._alarm_show(req.uri, tenant_id, id)
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res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
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res.status = falcon.HTTP_200
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@resource_api.Restify('/v2.0/alarms/{id}', method='patch')
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def do_patch_alarms(self, req, res, id):
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# Same logic as alarm_update
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return self.do_put_alarms(req, res, id)
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@resource_api.Restify('/v2.0/alarms/{id}', method='delete')
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def do_delete_alarms(self, req, res, id):
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helpers.validate_authorization(req, self._default_authorized_roles)
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tenant_id = helpers.get_tenant_id(req)
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self._alarm_delete(tenant_id, id)
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res.status = falcon.HTTP_204
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@resource_api.Restify('/v2.0/alarms', method='get')
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def do_get_alarms(self, req, res):
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helpers.validate_authorization(req, self._default_authorized_roles)
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tenant_id = helpers.get_tenant_id(req)
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query_parms = falcon.uri.parse_query_string(req.query_string)
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result = self._alarm_list(req.uri, tenant_id, query_parms)
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res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
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res.status = falcon.HTTP_200
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@resource_api.Restify('/v2.0/alarms/{id}', method='get')
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def do_get_alarm_by_id(self, req, res, id):
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# Necessary because falcon interprets 'state-history' as an
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# alarm id, and this url masks '/v2.0/alarms/state-history'.
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if id.lower() == 'state-history':
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return self.do_get_alarms_state_history(req, res)
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helpers.validate_authorization(req, self._default_authorized_roles)
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tenant_id = helpers.get_tenant_id(req)
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result = self._alarm_show(req.uri, tenant_id, id)
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res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
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res.status = falcon.HTTP_200
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@resource_api.Restify('/v2.0/alarms/state-history', method='get')
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def do_get_alarms_state_history(self, req, res):
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helpers.validate_authorization(req, self._default_authorized_roles)
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tenant_id = helpers.get_tenant_id(req)
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start_timestamp = helpers.get_query_starttime_timestamp(req, False)
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end_timestamp = helpers.get_query_endtime_timestamp(req, False)
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query_parms = falcon.uri.parse_query_string(req.query_string)
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result = self._alarm_history_list(tenant_id, start_timestamp,
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end_timestamp, query_parms)
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res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
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res.status = falcon.HTTP_200
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@resource_api.Restify('/v2.0/alarms/{id}/state-history', method='get')
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def do_get_alarm_state_history(self, req, res, id):
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helpers.validate_authorization(req, self._default_authorized_roles)
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tenant_id = helpers.get_tenant_id(req)
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result = self._alarm_history(tenant_id, [id])
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res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
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res.status = falcon.HTTP_200
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@resource_try_catch_block
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def _alarm_update(self, tenant_id, id, new_state):
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alarm_metric_rows = self._alarms_repo.get_alarm_metrics(id)
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sub_alarm_rows = self._alarms_repo.get_sub_alarms(tenant_id, id)
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old_state = self._alarms_repo.update_alarm(tenant_id, id, new_state)
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# alarm_definition_id is the same for all rows.
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alarm_definition_id = sub_alarm_rows[0]['alarm_definition_id']
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state_info = {u'alarmState': new_state, u'oldAlarmState': old_state}
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self._send_alarm_event(u'alarm-updated', tenant_id,
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alarm_definition_id, alarm_metric_rows,
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sub_alarm_rows, state_info)
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if old_state != new_state:
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try:
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alarm_definition_row = self._alarms_repo.get_alarm_definition(
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tenant_id, id)
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except exceptions.DoesNotExistException:
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# Alarm definition does not exist. May have been deleted
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# in another transaction. In that case, all associated
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# alarms were also deleted, so don't send transition events.
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pass
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else:
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self._send_alarm_transitioned_event(tenant_id, id,
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alarm_definition_row,
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alarm_metric_rows,
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old_state, new_state)
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@resource_try_catch_block
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def _alarm_history_list(self, tenant_id, start_timestamp,
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end_timestamp, query_parms):
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# get_alarms expects 'metric_dimensions' for dimensions key.
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if 'dimensions' in query_parms:
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new_query_parms = {'metric_dimensions': query_parms['dimensions']}
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else:
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new_query_parms = {}
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alarm_rows = self._alarms_repo.get_alarms(tenant_id, new_query_parms)
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alarm_id_list = [alarm_row['alarm_id'] for alarm_row in alarm_rows]
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return self._metrics_repo.alarm_history(tenant_id, alarm_id_list,
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start_timestamp, end_timestamp)
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@resource_try_catch_block
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def _alarm_history(self, tenant_id, alarm_id):
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return self._metrics_repo.alarm_history(tenant_id, alarm_id)
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@resource_try_catch_block
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def _alarm_delete(self, tenant_id, id):
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alarm_metric_rows = self._alarms_repo.get_alarm_metrics(id)
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sub_alarm_rows = self._alarms_repo.get_sub_alarms(tenant_id, id)
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self._alarms_repo.delete_alarm(tenant_id, id)
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# alarm_definition_id is the same for all rows.
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alarm_definition_id = sub_alarm_rows[0]['alarm_definition_id']
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self._send_alarm_event(u'alarm-deleted', tenant_id,
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alarm_definition_id, alarm_metric_rows,
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sub_alarm_rows)
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@resource_try_catch_block
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def _alarm_show(self, req_uri, tenant_id, id):
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alarm_rows = self._alarms_repo.get_alarm(tenant_id, id)
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first_row = True
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for alarm_row in alarm_rows:
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if first_row:
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ad = {u'id': alarm_row['alarm_definition_id'],
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u'name': alarm_row['alarm_definition_name'],
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u'severity': alarm_row['severity'], }
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helpers.add_links_to_resource(ad,
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re.sub('alarms',
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'alarm-definitions',
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req_uri),
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rel=None)
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metrics = []
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alarm = {u'id': alarm_row['alarm_id'], u'metrics': metrics,
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u'state': alarm_row['state'],
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u'alarm_definition': ad}
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helpers.add_links_to_resource(alarm, req_uri)
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first_row = False
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dimensions = {}
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metric = {u'name': alarm_row['metric_name'],
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u'dimensions': dimensions}
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if alarm_row['metric_dimensions']:
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for dimension in alarm_row['metric_dimensions'].split(','):
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parsed_dimension = dimension.split('=')
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dimensions[parsed_dimension[0]] = parsed_dimension[1]
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metrics.append(metric)
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return alarm
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@resource_try_catch_block
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def _alarm_list(self, req_uri, tenant_id, query_parms):
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alarm_rows = self._alarms_repo.get_alarms(tenant_id, query_parms)
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result = []
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if not alarm_rows:
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return result
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# Forward declaration
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alarm = {}
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prev_alarm_id = None
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for alarm_row in alarm_rows:
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if prev_alarm_id != alarm_row['alarm_id']:
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if prev_alarm_id is not None:
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result.append(alarm)
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ad = {u'id': alarm_row['alarm_definition_id'],
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u'name': alarm_row['alarm_definition_name'],
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u'severity': alarm_row['severity'], }
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helpers.add_links_to_resource(ad,
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re.sub('alarms',
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'alarm-definitions',
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req_uri),
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rel=None)
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metrics = []
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alarm = {u'id': alarm_row['alarm_id'], u'metrics': metrics,
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u'state': alarm_row['state'],
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u'alarm_definition': ad}
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helpers.add_links_to_resource(alarm, req_uri)
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prev_alarm_id = alarm_row['alarm_id']
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dimensions = {}
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metric = {u'name': alarm_row['metric_name'],
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u'dimensions': dimensions}
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if alarm_row['metric_dimensions']:
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for dimension in alarm_row['metric_dimensions'].split(','):
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parsed_dimension = dimension.split('=')
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dimensions[parsed_dimension[0]] = parsed_dimension[1]
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metrics.append(metric)
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result.append(alarm)
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return result
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def _get_alarm_state(self, req):
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json_msg = helpers.read_http_resource(req)
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if 'state' in json_msg:
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state = json_msg['state'].upper()
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if state not in ['OK', 'ALARM', 'UNDETERMINED']:
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raise falcon.HTTPBadRequest('Bad request', 'Invalid state')
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return state
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else:
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raise falcon.HTTPBadRequest('Bad request', 'Missing state')
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