monasca-api/monasca/v2/reference/alarms.py

270 lines
9.7 KiB
Python

# Copyright 2014 Hewlett-Packard
#
# 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.
import json
import re
import falcon
from oslo.config import cfg
from monasca.api.alarms_api_v2 import AlarmsV2API
from monasca.common.repositories import exceptions
from monasca.common import resource_api
from monasca.openstack.common import log
from monasca.v2.reference.alarming import Alarming
from monasca.v2.reference import helpers
from monasca.v2.reference.resource import resource_try_catch_block
LOG = log.getLogger(__name__)
class Alarms(AlarmsV2API, Alarming):
def __init__(self, global_conf):
try:
super(Alarms, self).__init__(global_conf)
self._region = cfg.CONF.region
self._default_authorized_roles = (
cfg.CONF.security.default_authorized_roles)
self._delegate_authorized_roles = (
cfg.CONF.security.delegate_authorized_roles)
self._post_metrics_authorized_roles = (
cfg.CONF.security.default_authorized_roles +
cfg.CONF.security.agent_authorized_roles)
self._alarms_repo = resource_api.init_driver(
'monasca.repositories', cfg.CONF.repositories.alarms_driver)
self._metrics_repo = resource_api.init_driver(
'monasca.repositories', cfg.CONF.repositories.metrics_driver)
except Exception as ex:
LOG.exception(ex)
raise exceptions.RepositoryException(ex)
@resource_api.Restify('/v2.0/alarms/{id}', method='put')
def do_put_alarms(self, req, res, id):
helpers.validate_authorization(req, self._default_authorized_roles)
result = ''
res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
res.status = falcon.HTTP_200
res.status = '501 Not Implemented'
@resource_api.Restify('/v2.0/alarms/{id}', method='patch')
def do_patch_alarms(self, req, res, id):
helpers.validate_authorization(req, self._default_authorized_roles)
result = ''
res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
res.status = falcon.HTTP_200
res.status = '501 Not Implemented'
@resource_api.Restify('/v2.0/alarms/{id}', method='delete')
def do_delete_alarms(self, req, res, id):
helpers.validate_authorization(req, self._default_authorized_roles)
tenant_id = helpers.get_tenant_id(req)
self._alarm_delete(tenant_id, id)
res.status = falcon.HTTP_204
@resource_api.Restify('/v2.0/alarms', method='get')
def do_get_alarms(self, req, res):
helpers.validate_authorization(req, self._default_authorized_roles)
tenant_id = helpers.get_tenant_id(req)
query_parms = falcon.uri.parse_query_string(req.query_string)
result = self._alarm_list(req.uri, tenant_id, query_parms)
res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
res.status = falcon.HTTP_200
@resource_api.Restify('/v2.0/alarms/{id}', method='get')
def do_get_alarm_by_id(self, req, res, id):
# Necessary because falcon interprets 'state-history' as an
# alarm id, and this url masks '/v2.0/alarms/state-history'.
if id.lower() == 'state-history':
return self.do_get_alarms_state_history(req, res)
helpers.validate_authorization(req, self._default_authorized_roles)
tenant_id = helpers.get_tenant_id(req)
result = self._alarm_show(req.uri, tenant_id, id)
res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
res.status = falcon.HTTP_200
@resource_api.Restify('/v2.0/alarms/state-history', method='get')
def do_get_alarms_state_history(self, req, res):
helpers.validate_authorization(req, self._default_authorized_roles)
tenant_id = helpers.get_tenant_id(req)
start_timestamp = helpers.get_query_starttime_timestamp(req, False)
end_timestamp = helpers.get_query_endtime_timestamp(req, False)
query_parms = falcon.uri.parse_query_string(req.query_string)
result = self._alarm_history_list(tenant_id, start_timestamp,
end_timestamp, query_parms)
res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
res.status = falcon.HTTP_200
@resource_api.Restify('/v2.0/alarms/{id}/state-history', method='get')
def do_get_alarm_state_history(self, req, res, id):
helpers.validate_authorization(req, self._default_authorized_roles)
tenant_id = helpers.get_tenant_id(req)
result = self._alarm_history(tenant_id, [id])
res.body = json.dumps(result, ensure_ascii=False).encode('utf8')
res.status = falcon.HTTP_200
@resource_try_catch_block
def _alarm_history_list(self, tenant_id, start_timestamp,
end_timestamp, query_parms):
# get_alarms expects 'metric_dimensions' for dimensions key.
if 'dimensions' in query_parms:
new_query_parms = {'metric_dimensions': query_parms['dimensions']}
else:
new_query_parms = {}
alarm_rows = self._alarms_repo.get_alarms(tenant_id, new_query_parms)
alarm_id_list = [alarm_row.alarm_id for alarm_row in alarm_rows]
return self._metrics_repo.alarm_history(tenant_id, alarm_id_list,
start_timestamp, end_timestamp)
@resource_try_catch_block
def _alarm_history(self, tenant_id, alarm_id):
return self._metrics_repo.alarm_history(tenant_id, alarm_id)
@resource_try_catch_block
def _alarm_delete(self, tenant_id, id):
alarm_metric_rows = self._alarms_repo.get_alarm_metrics(id)
sub_alarm_rows = self._alarms_repo.get_sub_alarms(tenant_id, id)
self._alarms_repo.delete_alarm(tenant_id, id)
# alarm_definition_id is the same for all rows.
alarm_definition_id = sub_alarm_rows[0].alarm_definition_id
self._send_alarm_deleted_event(tenant_id, alarm_definition_id,
alarm_metric_rows, sub_alarm_rows)
@resource_try_catch_block
def _alarm_show(self, req_uri, tenant_id, id):
alarm_rows = self._alarms_repo.get_alarm(tenant_id, id)
first_row = True
for alarm_row in alarm_rows:
if first_row:
ad = {u'id': alarm_row.alarm_definition_id,
u'name': alarm_row.alarm_definition_name,
u'severity': alarm_row.severity, }
helpers.add_links_to_resource(ad,
re.sub('alarms',
'alarm-definitions',
req_uri),
rel=None)
metrics = []
alarm = {u'id': alarm_row.alarm_id, u'metrics': metrics,
u'state': alarm_row.state,
u'alarm_definition': ad}
helpers.add_links_to_resource(alarm, req_uri)
first_row = False
dimensions = {}
metric = {u'name': alarm_row.metric_name,
u'dimensions': dimensions}
if alarm_row.metric_dimensions:
for dimension in alarm_row.metric_dimensions.split(','):
parsed_dimension = dimension.split('=')
dimensions[parsed_dimension[0]] = parsed_dimension[1]
metrics.append(metric)
return alarm
@resource_try_catch_block
def _alarm_list(self, req_uri, tenant_id, query_parms):
alarm_rows = self._alarms_repo.get_alarms(tenant_id, query_parms)
result = []
if not alarm_rows:
return result
# Forward declaration
alarm = {}
prev_alarm_id = None
for alarm_row in alarm_rows:
if prev_alarm_id != alarm_row.alarm_id:
if prev_alarm_id is not None:
result.append(alarm)
ad = {u'id': alarm_row.alarm_definition_id,
u'name': alarm_row.alarm_definition_name,
u'severity': alarm_row.severity, }
helpers.add_links_to_resource(ad,
re.sub('alarms',
'alarm-definitions',
req_uri),
rel=None)
metrics = []
alarm = {u'id': alarm_row.alarm_id, u'metrics': metrics,
u'state': alarm_row.state,
u'alarm_definition': ad}
helpers.add_links_to_resource(alarm, req_uri)
prev_alarm_id = alarm_row.alarm_id
dimensions = {}
metric = {u'name': alarm_row.metric_name,
u'dimensions': dimensions}
if alarm_row.metric_dimensions:
for dimension in alarm_row.metric_dimensions.split(','):
parsed_dimension = dimension.split('=')
dimensions[parsed_dimension[0]] = parsed_dimension[1]
metrics.append(metric)
result.append(alarm)
return result