--- /dev/null
+# Copyright 2017 Intel Research and Development Ireland Limited
+# *************************************************************
+
+# This file is part of OSM Monitoring module
+# All Rights Reserved to Intel Corporation
+
+# 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.
+
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: helena.mcgough@intel.com or adrian.hoban@intel.com
+##
+"""Carry out alarming requests via Aodh API."""
+
+import json
+
+import logging
+
+from core.message_bus.producer import KafkaProducer
+
+from plugins.OpenStack.response import OpenStack_Response
+from plugins.OpenStack.settings import Config
+
+__author__ = "Helena McGough"
+
+log = logging.getLogger(__name__)
+
+ALARM_NAMES = {
+ "average_memory_usage_above_threshold": "average_memory_utilization",
+ "disk_read_ops": "disk_read_ops",
+ "disk_write_ops": "disk_write_ops",
+ "disk_read_bytes": "disk_read_bytes",
+ "disk_write_bytes": "disk_write_bytes",
+ "net_packets_dropped": "packets_dropped",
+ "packets_in_above_threshold": "packets_received",
+ "packets_out_above_threshold": "packets_sent",
+ "cpu_utilization_above_threshold": "cpu_utilization"}
+
+SEVERITIES = {
+ "warning": "low",
+ "minor": "low",
+ "major": "moderate",
+ "critical": "critical",
+ "indeterminate": "critical"}
+
+STATISTICS = {
+ "average": "avg",
+ "minimum": "min",
+ "maximum": "max",
+ "count": "count",
+ "sum": "sum"}
+
+
+class Alarming(object):
+ """Carries out alarming requests and responses via Aodh API."""
+
+ def __init__(self):
+ """Create the OpenStack alarming instance."""
+ # Initialize configuration and notifications
+ config = Config.instance()
+ config.read_environ("aodh")
+
+ # Initialise authentication for API requests
+ self.auth_token = None
+ self.endpoint = None
+ self.common = None
+
+ # Use the Response class to generate valid json response messages
+ self._response = OpenStack_Response()
+
+ # Initializer a producer to send responses back to SO
+ self._producer = KafkaProducer("alarm_response")
+
+ def alarming(self, message, common, auth_token):
+ """Consume info from the message bus to manage alarms."""
+ values = json.loads(message.value)
+ self.common = common
+
+ log.info("OpenStack alarm action required.")
+
+ # Generate and auth_token and endpoint for request
+ if auth_token is not None:
+ if self.auth_token != auth_token:
+ log.info("Auth_token for alarming set by access_credentials.")
+ self.auth_token = auth_token
+ else:
+ log.info("Auth_token has not been updated.")
+ else:
+ log.info("Using environment variables to set auth_token for Aodh.")
+ self.auth_token = self.common._authenticate()
+
+ if self.endpoint is None:
+ log.info("Generating a new endpoint for Aodh.")
+ self.endpoint = self.common.get_endpoint("alarming")
+
+ if message.key == "create_alarm_request":
+ # Configure/Update an alarm
+ alarm_details = values['alarm_create_request']
+
+ alarm_id, alarm_status = self.configure_alarm(
+ self.endpoint, self.auth_token, alarm_details)
+
+ # Generate a valid response message, send via producer
+ try:
+ if alarm_status is True:
+ log.info("Alarm successfully created")
+
+ resp_message = self._response.generate_response(
+ 'create_alarm_response', status=alarm_status,
+ alarm_id=alarm_id,
+ cor_id=alarm_details['correlation_id'])
+ log.info("Response Message: %s", resp_message)
+ self._producer.create_alarm_response(
+ 'create_alarm_resonse', resp_message,
+ 'alarm_response')
+ except Exception as exc:
+ log.warn("Response creation failed: %s", exc)
+
+ elif message.key == "list_alarm_request":
+ # Check for a specifed: alarm_name, resource_uuid, severity
+ # and generate the appropriate list
+ list_details = values['alarm_list_request']
+
+ alarm_list = self.list_alarms(
+ self.endpoint, self.auth_token, list_details)
+
+ try:
+ # Generate and send a list response back
+ resp_message = self._response.generate_response(
+ 'list_alarm_response', alarm_list=alarm_list,
+ cor_id=list_details['correlation_id'])
+ log.info("Response Message: %s", resp_message)
+ self._producer.list_alarm_response(
+ 'list_alarm_response', resp_message,
+ 'alarm_response')
+ except Exception as exc:
+ log.warn("Failed to send a valid response back.")
+
+ elif message.key == "delete_alarm_request":
+ request_details = values['alarm_delete_request']
+ alarm_id = request_details['alarm_uuid']
+
+ resp_status = self.delete_alarm(
+ self.endpoint, self.auth_token, alarm_id)
+
+ # Generate and send a response message
+ try:
+ resp_message = self._response.generate_response(
+ 'delete_alarm_response', alarm_id=alarm_id,
+ status=resp_status,
+ cor_id=request_details['correlation_id'])
+ log.info("Response message: %s", resp_message)
+ self._producer.delete_alarm_response(
+ 'delete_alarm_response', resp_message,
+ 'alarm_response')
+ except Exception as exc:
+ log.warn("Failed to create delete reponse:%s", exc)
+
+ elif message.key == "acknowledge_alarm":
+ # Acknowledge that an alarm has been dealt with by the SO
+ alarm_id = values['ack_details']['alarm_uuid']
+
+ response = self.update_alarm_state(
+ self.endpoint, self.auth_token, alarm_id)
+
+ # Log if an alarm was reset
+ if response is True:
+ log.info("Acknowledged the alarm and cleared it.")
+ else:
+ log.warn("Failed to acknowledge/clear the alarm.")
+
+ elif message.key == "update_alarm_request":
+ # Update alarm configurations
+ alarm_details = values['alarm_update_request']
+
+ alarm_id, status = self.update_alarm(
+ self.endpoint, self.auth_token, alarm_details)
+
+ # Generate a response for an update request
+ try:
+ resp_message = self._response.generate_response(
+ 'update_alarm_response', alarm_id=alarm_id,
+ cor_id=alarm_details['correlation_id'],
+ status=status)
+ log.info("Response message: %s", resp_message)
+ self._producer.update_alarm_response(
+ 'update_alarm_response', resp_message,
+ 'alarm_response')
+ except Exception as exc:
+ log.warn("Failed to send an update response:%s", exc)
+
+ else:
+ log.debug("Unknown key, no action will be performed")
+
+ return
+
+ def configure_alarm(self, endpoint, auth_token, values):
+ """Create requested alarm in Aodh."""
+ url = "{}/v2/alarms/".format(endpoint)
+
+ # Check if the desired alarm is supported
+ alarm_name = values['alarm_name'].lower()
+ metric_name = values['metric_name'].lower()
+ resource_id = values['resource_uuid']
+
+ if alarm_name not in ALARM_NAMES.keys():
+ log.warn("This alarm is not supported, by a valid metric.")
+ return None, False
+ if ALARM_NAMES[alarm_name] != metric_name:
+ log.warn("This is not the correct metric for this alarm.")
+ return None, False
+
+ # Check for the required metric
+ metric_id = self.check_for_metric(auth_token, metric_name, resource_id)
+
+ try:
+ if metric_id is not None:
+ # Create the alarm if metric is available
+ payload = self.check_payload(values, metric_name, resource_id,
+ alarm_name)
+ new_alarm = self.common._perform_request(
+ url, auth_token, req_type="post", payload=payload)
+ return json.loads(new_alarm.text)['alarm_id'], True
+ else:
+ log.warn("The required Gnocchi metric does not exist.")
+ return None, False
+
+ except Exception as exc:
+ log.warn("Failed to create the alarm: %s", exc)
+ return None, False
+
+ def delete_alarm(self, endpoint, auth_token, alarm_id):
+ """Delete alarm function."""
+ url = "{}/v2/alarms/%s".format(endpoint) % (alarm_id)
+
+ try:
+ result = self.common._perform_request(
+ url, auth_token, req_type="delete")
+ if str(result.status_code) == "404":
+ log.info("Alarm doesn't exist: %s", result.status_code)
+ # If status code is 404 alarm did not exist
+ return False
+ else:
+ return True
+
+ except Exception as exc:
+ log.warn("Failed to delete alarm: %s because %s.", alarm_id, exc)
+ return False
+
+ def list_alarms(self, endpoint, auth_token, list_details):
+ """Generate the requested list of alarms."""
+ url = "{}/v2/alarms/".format(endpoint)
+ a_list, name_list, sev_list, res_list = [], [], [], []
+
+ # TODO(mcgoughh): for now resource_id is a mandatory field
+ # Check for a reqource is
+ try:
+ resource = list_details['resource_uuid']
+ except KeyError as exc:
+ log.warn("Resource id not specified for list request: %s", exc)
+ return None
+
+ # Checking what fields are specified for a list request
+ try:
+ name = list_details['alarm_name'].lower()
+ if name not in ALARM_NAMES.keys():
+ log.warn("This alarm is not supported, won't be used!")
+ name = None
+ except KeyError as exc:
+ log.info("Alarm name isn't specified.")
+ name = None
+
+ try:
+ severity = list_details['severity'].lower()
+ sev = SEVERITIES[severity]
+ except KeyError as exc:
+ log.info("Severity is unspecified/incorrectly configured")
+ sev = None
+
+ # Perform the request to get the desired list
+ try:
+ result = self.common._perform_request(
+ url, auth_token, req_type="get")
+
+ if result is not None:
+ # Get list based on resource id
+ for alarm in json.loads(result.text):
+ rule = alarm['gnocchi_resources_threshold_rule']
+ if resource == rule['resource_id']:
+ res_list.append(str(alarm))
+ if not res_list:
+ log.info("No alarms for this resource")
+ return a_list
+
+ # Generate specified listed if requested
+ if name is not None and sev is not None:
+ log.info("Return a list of %s alarms with %s severity.",
+ name, sev)
+ for alarm in json.loads(result.text):
+ if name == alarm['name']:
+ name_list.append(str(alarm))
+ for alarm in json.loads(result.text):
+ if sev == alarm['severity']:
+ sev_list.append(str(alarm))
+ name_sev_list = list(set(name_list).intersection(sev_list))
+ a_list = list(set(name_sev_list).intersection(res_list))
+ elif name is not None:
+ log.info("Returning a %s list of alarms.", name)
+ for alarm in json.loads(result.text):
+ if name == alarm['name']:
+ name_list.append(str(alarm))
+ a_list = list(set(name_list).intersection(res_list))
+ elif sev is not None:
+ log.info("Returning %s severity alarm list.", sev)
+ for alarm in json.loads(result.text):
+ if sev == alarm['severity']:
+ sev_list.append(str(alarm))
+ a_list = list(set(sev_list).intersection(res_list))
+ else:
+ log.info("Returning an entire list of alarms.")
+ a_list = res_list
+ else:
+ log.info("There are no alarms!")
+
+ except Exception as exc:
+ log.info("Failed to generate required list: %s", exc)
+ return None
+
+ return a_list
+
+ def update_alarm_state(self, endpoint, auth_token, alarm_id):
+ """Set the state of an alarm to ok when ack message is received."""
+ url = "{}/v2/alarms/%s/state".format(endpoint) % alarm_id
+ payload = json.dumps("ok")
+
+ try:
+ self.common._perform_request(
+ url, auth_token, req_type="put", payload=payload)
+ return True
+ except Exception as exc:
+ log.warn("Unable to update alarm state: %s", exc)
+ return False
+
+ def update_alarm(self, endpoint, auth_token, values):
+ """Get alarm name for an alarm configuration update."""
+ # Get already existing alarm details
+ url = "{}/v2/alarms/%s".format(endpoint) % values['alarm_uuid']
+
+ # Gets current configurations about the alarm
+ try:
+ result = self.common._perform_request(
+ url, auth_token, req_type="get")
+ alarm_name = json.loads(result.text)['name']
+ rule = json.loads(result.text)['gnocchi_resources_threshold_rule']
+ alarm_state = json.loads(result.text)['state']
+ resource_id = rule['resource_id']
+ metric_name = rule['metric']
+ except Exception as exc:
+ log.warn("Failed to retreive existing alarm info: %s.\
+ Can only update OSM alarms.", exc)
+ return None, False
+
+ # Generates and check payload configuration for alarm update
+ payload = self.check_payload(values, metric_name, resource_id,
+ alarm_name, alarm_state=alarm_state)
+
+ # Updates the alarm configurations with the valid payload
+ if payload is not None:
+ try:
+ update_alarm = self.common._perform_request(
+ url, auth_token, req_type="put", payload=payload)
+
+ return json.loads(update_alarm.text)['alarm_id'], True
+ except Exception as exc:
+ log.warn("Alarm update could not be performed: %s", exc)
+ return None, False
+ return None, False
+
+ def check_payload(self, values, metric_name, resource_id,
+ alarm_name, alarm_state=None):
+ """Check that the payload is configuration for update/create alarm."""
+ try:
+ # Check state and severity
+ severity = values['severity'].lower()
+ if severity == "indeterminate":
+ alarm_state = "insufficient data"
+ if alarm_state is None:
+ alarm_state = "ok"
+
+ statistic = values['statistic'].lower()
+ # Try to configure the payload for the update/create request
+ # Can only update: threshold, operation, statistic and
+ # the severity of the alarm
+ rule = {'threshold': values['threshold_value'],
+ 'comparison_operator': values['operation'].lower(),
+ 'metric': metric_name,
+ 'resource_id': resource_id,
+ 'resource_type': 'generic',
+ 'aggregation_method': STATISTICS[statistic]}
+ payload = json.dumps({'state': alarm_state,
+ 'name': alarm_name,
+ 'severity': SEVERITIES[severity],
+ 'type': 'gnocchi_resources_threshold',
+ 'gnocchi_resources_threshold_rule': rule, })
+ return payload
+ except KeyError as exc:
+ log.warn("Alarm is not configured correctly: %s", exc)
+ return None
+
+ def get_alarm_state(self, endpoint, auth_token, alarm_id):
+ """Get the state of the alarm."""
+ url = "{}/v2/alarms/%s/state".format(endpoint) % alarm_id
+
+ try:
+ alarm_state = self.common._perform_request(
+ url, auth_token, req_type="get")
+ return json.loads(alarm_state.text)
+ except Exception as exc:
+ log.warn("Failed to get the state of the alarm:%s", exc)
+ return None
+
+ def check_for_metric(self, auth_token, m_name, r_id):
+ """Check for the alarm metric."""
+ try:
+ endpoint = self.common.get_endpoint("metric")
+
+ url = "{}/v1/metric/".format(endpoint)
+ metric_list = self.common._perform_request(
+ url, auth_token, req_type="get")
+
+ for metric in json.loads(metric_list.text):
+ name = metric['name']
+ resource = metric['resource_id']
+ if (name == m_name and resource == r_id):
+ metric_id = metric['id']
+ log.info("The required metric exists, an alarm will be created.")
+ return metric_id
+ except Exception as exc:
+ log.info("Desired Gnocchi metric not found:%s", exc)
+ return None
projects / osm / MON.git / blobdiff