osm_mon/core/message_bus/common_consumer.py

   1 # Copyright 2017 Intel Research and Development Ireland Limited
   2 # *************************************************************
   3 # This file is part of OSM Monitoring module
   4 # All Rights Reserved to Intel Corporation
   5 #
   6 # Licensed under the Apache License, Version 2.0 (the "License"); you
   7 # may not use this file except in compliance with the License. You may
   8 # obtain a copy of the License at
   9 #
  10 #         http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing, software
  13 # distributed under the License is distributed on an "AS IS" BASIS,
  14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  15 # implied. See the License for the specific language governing
  16 # permissions and limitations under the License.
  17 #
  18 # For those usages not covered by the Apache License, Version 2.0 please
  19 # contact: helena.mcgough@intel.com or adrian.hoban@intel.com
  20 """A common KafkaConsumer for all MON plugins."""
  21
  22 import json
  23 import logging
  24 import sys
  25 import threading
  26
  27 import six
  28 import yaml
  29 from kafka import KafkaConsumer
  30 from osm_common import dbmongo
  31
  32 from osm_mon.core.auth import AuthManager
  33 from osm_mon.core.database import DatabaseManager
  34 from osm_mon.core.settings import Config
  35 from osm_mon.plugins.CloudWatch.access_credentials import AccessCredentials
  36 from osm_mon.plugins.CloudWatch.connection import Connection
  37 from osm_mon.plugins.CloudWatch.plugin_alarm import plugin_alarms
  38 from osm_mon.plugins.CloudWatch.plugin_metric import plugin_metrics
  39 from osm_mon.plugins.OpenStack.Aodh import alarming
  40 from osm_mon.plugins.OpenStack.Gnocchi import metrics
  41 from osm_mon.plugins.vRealiseOps import plugin_receiver
  42
  43 logging.basicConfig(stream=sys.stdout,
  44                     format='%(asctime)s %(message)s',
  45                     datefmt='%m/%d/%Y %I:%M:%S %p',
  46                     level=logging.INFO)
  47 log = logging.getLogger(__name__)
  48
  49
  50 class CommonConsumer:
  51
  52     def __init__(self):
  53         cfg = Config.instance()
  54
  55         self.auth_manager = AuthManager()
  56         self.database_manager = DatabaseManager()
  57         self.database_manager.create_tables()
  58
  59         # Create OpenStack alarming and metric instances
  60         self.openstack_metrics = metrics.Metrics()
  61         self.openstack_alarms = alarming.Alarming()
  62
  63         # Create CloudWatch alarm and metric instances
  64         self.cloudwatch_alarms = plugin_alarms()
  65         self.cloudwatch_metrics = plugin_metrics()
  66         self.aws_connection = Connection()
  67         self.aws_access_credentials = AccessCredentials()
  68
  69         # Create vROps plugin_receiver class instance
  70         self.vrops_rcvr = plugin_receiver.PluginReceiver()
  71
  72         log.info("Connecting to MongoDB...")
  73         self.common_db = dbmongo.DbMongo()
  74         common_db_uri = cfg.MONGO_URI.split(':')
  75         self.common_db.db_connect({'host': common_db_uri[0], 'port': int(common_db_uri[1]), 'name': 'osm'})
  76         log.info("Connection successful.")
  77
  78         # Initialize consumers for alarms and metrics
  79         self.common_consumer = KafkaConsumer(bootstrap_servers=cfg.BROKER_URI,
  80                                              key_deserializer=bytes.decode,
  81                                              value_deserializer=bytes.decode,
  82                                              group_id="mon-consumer")
  83
  84         # Define subscribe the consumer for the plugins
  85         topics = ['metric_request', 'alarm_request', 'access_credentials', 'vim_account']
  86         # TODO: Remove access_credentials
  87         self.common_consumer.subscribe(topics)
  88
  89     def get_vim_type(self, vim_uuid):
  90         """Get the vim type that is required by the message."""
  91         credentials = self.database_manager.get_credentials(vim_uuid)
  92         return credentials.type
  93
  94     def get_vdur(self, nsr_id, member_index, vdu_name):
  95         vnfr = self.get_vnfr(nsr_id, member_index)
  96         for vdur in vnfr['vdur']:
  97             if vdur['name'] == vdu_name:
  98                 return vdur
  99         raise ValueError('vdur not found for nsr-id %s, member_index %s and vdu_name %s', nsr_id, member_index,
 100                          vdu_name)
 101
 102     def get_vnfr(self, nsr_id, member_index):
 103         vnfr = self.common_db.get_one(table="vnfrs",
 104                                       filter={"nsr-id-ref": nsr_id, "member-vnf-index-ref": str(member_index)})
 105         return vnfr
 106
 107     def run(self):
 108         log.info("Listening for messages...")
 109         for message in self.common_consumer:
 110             t = threading.Thread(target=self.consume_message, args=(message,))
 111             t.start()
 112
 113     def consume_message(self, message):
 114         log.info("Message arrived: %s", message)
 115         try:
 116             try:
 117                 values = json.loads(message.value)
 118             except ValueError:
 119                 values = yaml.safe_load(message.value)
 120
 121             if message.topic == "vim_account":
 122                 if message.key == "create" or message.key == "edit":
 123                     self.auth_manager.store_auth_credentials(values)
 124                 if message.key == "delete":
 125                     self.auth_manager.delete_auth_credentials(values)
 126
 127             else:
 128                 # Get ns_id from message
 129                 # TODO: Standardize all message models to avoid the need of figuring out where are certain fields
 130                 contains_list = False
 131                 list_index = None
 132                 for k, v in six.iteritems(values):
 133                     if isinstance(v, dict):
 134                         if 'ns_id' in v:
 135                             contains_list = True
 136                             list_index = k
 137                             break
 138                 if not contains_list and 'ns_id' in values:
 139                     ns_id = values['ns_id']
 140                 else:
 141                     ns_id = values[list_index]['ns_id']
 142
 143                 vnf_index = values[list_index]['vnf_member_index'] if contains_list else values['vnf_member_index']
 144
 145                 # Check the vim desired by the message
 146                 vnfr = self.get_vnfr(ns_id, vnf_index)
 147                 vim_uuid = vnfr['vim-account-id']
 148
 149                 if (contains_list and 'vdu_name' in values[list_index]) or 'vdu_name' in values:
 150                     vdu_name = values[list_index]['vdu_name'] if contains_list else values['vdu_name']
 151                     vdur = self.get_vdur(ns_id, vnf_index, vdu_name)
 152                     if contains_list:
 153                         values[list_index]['resource_uuid'] = vdur['vim-id']
 154                     else:
 155                         values['resource_uuid'] = vdur['vim-id']
 156                     message = message._replace(value=json.dumps(values))
 157
 158                 vim_type = self.get_vim_type(vim_uuid)
 159
 160                 if vim_type == "openstack":
 161                     log.info("This message is for the OpenStack plugin.")
 162                     if message.topic == "metric_request":
 163                         self.openstack_metrics.metric_calls(message, vim_uuid)
 164                     if message.topic == "alarm_request":
 165                         self.openstack_alarms.alarming(message, vim_uuid)
 166
 167                 elif vim_type == "aws":
 168                     log.info("This message is for the CloudWatch plugin.")
 169                     aws_conn = self.aws_connection.setEnvironment()
 170                     if message.topic == "metric_request":
 171                         self.cloudwatch_metrics.metric_calls(message, aws_conn)
 172                     if message.topic == "alarm_request":
 173                         self.cloudwatch_alarms.alarm_calls(message, aws_conn)
 174                     if message.topic == "access_credentials":
 175                         self.aws_access_credentials.access_credential_calls(message)
 176
 177                 elif vim_type == "vmware":
 178                     log.info("This metric_request message is for the vROPs plugin.")
 179                     self.vrops_rcvr.consume(message,vim_uuid)
 180
 181                 else:
 182                     log.debug("vim_type is misconfigured or unsupported; %s",
 183                               vim_type)
 184
 185         except Exception:
 186             log.exception("Exception processing message: ")
 187
 188
 189 if __name__ == '__main__':
 190     CommonConsumer().run()