osm_mon/plugins/OpenStack/Aodh/notifier.py

   1 # Copyright 2017 Intel Research and Development Ireland Limited
   2 # *************************************************************
   3
   4 # This file is part of OSM Monitoring module
   5 # All Rights Reserved to Intel Corporation
   6
   7 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   8 # not use this file except in compliance with the License. You may obtain
   9 # a copy of the License at
  10
  11 #         http://www.apache.org/licenses/LICENSE-2.0
  12
  13 # Unless required by applicable law or agreed to in writing, software
  14 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  15 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  16 # License for the specific language governing permissions and limitations
  17 # under the License.
  18
  19 # For those usages not covered by the Apache License, Version 2.0 please
  20 # contact: helena.mcgough@intel.com or adrian.hoban@intel.com
  21 ##
  22 # __author__ = Helena McGough
  23 #
  24 """A Webserver to send alarm notifications from Aodh to the SO."""
  25 import json
  26 import logging
  27 import os
  28 import sys
  29 import time
  30
  31 from six.moves.BaseHTTPServer import BaseHTTPRequestHandler
  32 from six.moves.BaseHTTPServer import HTTPServer
  33
  34 # Initialise a logger for alarm notifier
  35
  36 logging.basicConfig(stream=sys.stdout,
  37                     format='%(asctime)s %(message)s',
  38                     datefmt='%m/%d/%Y %I:%M:%S %p',
  39                     level=logging.INFO)
  40 log = logging.getLogger(__name__)
  41
  42 sys.path.append(os.path.abspath(os.path.join(os.path.realpath(__file__), '..', '..', '..', '..', '..')))
  43
  44 from osm_mon.core.database import DatabaseManager
  45 from osm_mon.core.message_bus.producer import KafkaProducer
  46
  47 from osm_mon.plugins.OpenStack.common import Common
  48 from osm_mon.plugins.OpenStack.response import OpenStack_Response
  49 from osm_mon.core.settings import Config
  50
  51
  52 class NotifierHandler(BaseHTTPRequestHandler):
  53     """Handler class for alarm_actions triggered by OSM alarms."""
  54
  55     def _set_headers(self):
  56         """Set the headers for a request."""
  57         self.send_response(200)
  58         self.send_header('Content-type', 'text/html')
  59         self.end_headers()
  60
  61     def do_GET(self):
  62         """Get request functionality."""
  63         self._set_headers()
  64         self.wfile.write("<html><body><h1>hi!</h1></body></html>")
  65
  66     def do_POST(self):
  67         """POST request function."""
  68         # Gets header and data from the post request and records info
  69         self._set_headers()
  70         # Gets the size of data
  71         content_length = int(self.headers['Content-Length'])
  72         post_data = self.rfile.read(content_length)
  73         self.wfile.write("<html><body><h1>POST!</h1></body></tml>")
  74         log.info("This alarm was triggered: %s", json.loads(post_data))
  75
  76         # Generate a notify_alarm response for the SO
  77         self.notify_alarm(json.loads(post_data))
  78
  79     def notify_alarm(self, values):
  80         """Send a notification response message to the SO."""
  81
  82         try:
  83             # Initialise configuration and authentication for response message
  84             config = Config.instance()
  85             config.read_environ()
  86             response = OpenStack_Response()
  87             producer = KafkaProducer('alarm_response')
  88
  89             database_manager = DatabaseManager()
  90
  91             alarm_id = values['alarm_id']
  92             # Get vim_uuid associated to alarm
  93             creds = database_manager.get_credentials_for_alarm_id(alarm_id, 'openstack')
  94             auth_token = Common.get_auth_token(creds.uuid)
  95             endpoint = Common.get_endpoint("alarming", creds.uuid)
  96
  97             # If authenticated generate and send response message
  98             if auth_token is not None and endpoint is not None:
  99                 url = "{}/v2/alarms/%s".format(endpoint) % alarm_id
 100
 101                 # Get the resource_id of the triggered alarm
 102                 result = Common.perform_request(
 103                     url, auth_token, req_type="get")
 104                 alarm_details = json.loads(result.text)
 105                 gnocchi_rule = alarm_details['gnocchi_resources_threshold_rule']
 106                 resource_id = gnocchi_rule['resource_id']
 107
 108                 # Process an alarm notification if resource_id is valid
 109                 if resource_id is not None:
 110                     # Get date and time for response message
 111                     a_date = time.strftime("%d-%m-%Y") + " " + time.strftime("%X")
 112                     # Try generate and send response
 113                     try:
 114                         resp_message = response.generate_response(
 115                             'notify_alarm', a_id=alarm_id,
 116                             r_id=resource_id,
 117                             sev=values['severity'], date=a_date,
 118                             state=values['current'], vim_type="openstack")
 119                         producer.notify_alarm(
 120                             'notify_alarm', resp_message, 'alarm_response')
 121                         log.info("Sent an alarm response to SO: %s", resp_message)
 122                     except Exception as exc:
 123                         log.exception("Couldn't notify SO of the alarm:")
 124                 else:
 125                     log.warn("No resource_id for alarm; no SO response sent.")
 126             else:
 127                 log.warn("Authentication failure; SO notification not sent.")
 128         except:
 129             log.exception("Could not notify alarm.")
 130
 131
 132 def run(server_class=HTTPServer, handler_class=NotifierHandler, port=8662):
 133     """Run the webserver application to retrieve alarm notifications."""
 134     try:
 135         server_address = ('', port)
 136         httpd = server_class(server_address, handler_class)
 137         print('Starting alarm notifier...')
 138         log.info("Starting alarm notifier server on port: %s", port)
 139         httpd.serve_forever()
 140     except Exception as exc:
 141         log.warn("Failed to start webserver, %s", exc)
 142
 143
 144 if __name__ == "__main__":
 145     from sys import argv
 146
 147     # Runs the webserver
 148     if len(argv) == 2:
 149         run(port=int(argv[1]))
 150     else:
 151         run()