osm_mon/dashboarder/dashboarder.py

   1 # -*- coding: utf-8 -*-
   2
   3 # Copyright 2021 Whitestack, LLC
   4 # *************************************************************
   5
   6 # This file is part of OSM Monitoring module
   7 # All Rights Reserved to Whitestack, LLC
   8
   9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
  10 # not use this file except in compliance with the License. You may obtain
  11 # a copy of the License at
  12
  13 #         http://www.apache.org/licenses/LICENSE-2.0
  14
  15 # Unless required by applicable law or agreed to in writing, software
  16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  18 # License for the specific language governing permissions and limitations
  19 # under the License.
  20 # For those usages not covered by the Apache License, Version 2.0 please
  21 # contact: fbravo@whitestack.com or glavado@whitestack.com
  22 ##
  23
  24 import logging
  25 import time
  26 import socket
  27 import asyncio
  28 from urllib.parse import urlparse
  29
  30 from osm_mon.dashboarder.service import DashboarderService
  31 from osm_mon.core.config import Config
  32 from osm_mon.core.message_bus_client import MessageBusClient
  33
  34 log = logging.getLogger(__name__)
  35
  36
  37 class Dashboarder:
  38     def __init__(self, config: Config, loop=None):
  39         self.conf = config
  40         self.service = DashboarderService(config)
  41         if not loop:
  42             loop = asyncio.get_event_loop()
  43         self.loop = loop
  44         self.msg_bus = MessageBusClient(config)
  45
  46     # run consumer for grafana user management
  47     def run(self):
  48         self.loop.run_until_complete(self.start())
  49
  50     async def start(self, wait_time=5):
  51         topics = ["users", "project"]
  52         while True:
  53             try:
  54                 await self.msg_bus.aioread(topics, self._user_msg)
  55                 break
  56             except Exception as e:
  57                 # Failed to subscribe to kafka topics
  58                 log.error("Error when subscribing to topics %s", str(topics))
  59                 log.exception("Exception %s", str(e))
  60                 # Wait for some time for kaka to stabilize and then reattempt to subscribe again
  61                 time.sleep(wait_time)
  62                 log.info("Retrying to subscribe the kafka topic(s) %s", str(topics))
  63
  64     async def _user_msg(self, topic, key, values):
  65         log.debug("Message from kafka bus received: topic: %s and values: %s and key: %s", topic, values, key)
  66         try:
  67             if topic == "users" and key == "created":
  68                 log.debug("Received message from kafka for creating user")
  69                 if values.get('username'):
  70                     user = values['username']
  71                 else:
  72                     user = values['changes']['username']
  73                 self.service.create_grafana_user(user)
  74                 # user-created and mapping is done with osm cli
  75                 if values.get('changes'):
  76                     # user-project-role mapping is included in change
  77                     if values['changes'].get('project_role_mappings'):
  78                         user_id = values["_id"]
  79                         project_data = values["changes"]["project_role_mappings"]
  80                         project_list = values["changes"].get("projects")
  81                         self.service.create_grafana_team_member(project_data, user_id, project_list)
  82                 elif values.get('project_role_mappings'):
  83                     # for fresh project-role-mapping
  84                     user_id = values.get("_id")
  85                     project_data = values["project_role_mappings"]
  86                     if user_id:
  87                         self.service.create_grafana_team_member(project_data, user_id)
  88                     else:
  89                         # for keystone we will get username
  90                         self.service.create_grafana_team_member(project_data, user=values['username'])
  91             elif topic == "users" and key == "deleted":
  92                 log.debug("Received message from kafka for deleting user")
  93                 user = values['username']
  94                 self.service.delete_grafana_user(user)
  95             elif topic == "users" and key == "edited":
  96                 log.debug("Received message from kafka for associating user to team")
  97                 user_id = values["_id"]
  98                 if values["changes"].get("remove_project_role_mappings") and not \
  99                         values["changes"].get("add_project_role_mappings"):
 100                     # Removing user-project role mapping
 101                     self.service.remove_grafana_team_members(user_id,
 102                                                              values["changes"].get("remove_project_role_mappings"))
 103                 else:
 104                     # Changing user project role mapping
 105                     if values["changes"].get("project_role_mappings"):
 106                         project_data = values["changes"]["project_role_mappings"]
 107                     else:
 108                         project_data = values["changes"]["add_project_role_mappings"]
 109                     self.service.create_grafana_team_member(project_data, user_id)
 110             elif topic == "project" and key == "created":
 111                 log.debug("Received message from kafka for creating team")
 112                 team_name = values["name"]
 113                 self.service.create_grafana_team(team_name)
 114             elif topic == "project" and key == "deleted":
 115                 log.debug("Received message from kafka for deleting team")
 116                 project_name = values["name"]
 117                 self.service.delete_grafana_team(project_name)
 118             elif topic == "project" and key == "edited":
 119                 log.debug("Received message from kafka for team name update")
 120                 project_old_name = values["original"]["name"]
 121                 project_new_name = values["changes"]["name"]
 122                 self.service.update_grafana_team(project_new_name, project_old_name)
 123         except Exception:
 124             log.exception("Exception processing message: ")
 125
 126     def dashboard_forever(self):
 127         log.debug('dashboard_forever')
 128         grafana_parsed_uri = urlparse(self.conf.get('grafana', 'url'))
 129         while True:
 130             try:
 131                 socket.gethostbyname(grafana_parsed_uri.hostname)
 132                 log.debug("Dashboard backend is running")
 133             except socket.error:
 134                 log.debug("Dashboard backend is not available")
 135                 time.sleep(int(self.conf.get('dashboarder', 'interval')))
 136                 continue
 137             try:
 138                 self.create_dashboards()
 139                 time.sleep(int(self.conf.get('dashboarder', 'interval')))
 140             except Exception:
 141                 log.exception("Error creating dashboards")
 142
 143     def create_dashboards(self):
 144         self.service.create_dashboards()
 145         log.debug('Dashboarder Service > create_dashboards called!')