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 topic(s) %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(
  66             "Message from kafka bus received: topic: %s and values: %s and key: %s",
  67             topic,
  68             values,
  69             key,
  70         )
  71         try:
  72             if topic == "users" and key == "created":
  73                 log.debug("Received message from kafka for creating user")
  74                 if values.get("username"):
  75                     user = values["username"]
  76                 else:
  77                     user = values["changes"]["username"]
  78                 self.service.create_grafana_user(user)
  79                 # user-created and mapping is done with osm cli
  80                 if values.get("changes"):
  81                     # user-project-role mapping is included in change
  82                     if values["changes"].get("project_role_mappings"):
  83                         user_id = values["_id"]
  84                         project_data = values["changes"]["project_role_mappings"]
  85                         project_list = values["changes"].get("projects")
  86                         self.service.create_grafana_team_member(
  87                             project_data, user_id, project_list
  88                         )
  89                 elif values.get("project_role_mappings"):
  90                     # for fresh project-role-mapping
  91                     user_id = values.get("_id")
  92                     project_data = values["project_role_mappings"]
  93                     if user_id:
  94                         self.service.create_grafana_team_member(project_data, user_id)
  95                     else:
  96                         # for keystone we will get username
  97                         self.service.create_grafana_team_member(
  98                             project_data, user=values["username"]
  99                         )
 100             elif topic == "users" and key == "deleted":
 101                 log.debug("Received message from kafka for deleting user")
 102                 user = values["username"]
 103                 self.service.delete_grafana_user(user)
 104             elif topic == "users" and key == "edited":
 105                 log.debug("Received message from kafka for associating user to team")
 106                 user_id = values["_id"]
 107                 if values["changes"].get("remove_project_role_mappings") and not values[
 108                     "changes"
 109                 ].get("add_project_role_mappings"):
 110                     # Removing user-project role mapping
 111                     self.service.remove_grafana_team_members(
 112                         user_id, values["changes"].get("remove_project_role_mappings")
 113                     )
 114                 else:
 115                     # Changing user project role mapping
 116                     if values["changes"].get("project_role_mappings"):
 117                         project_data = values["changes"]["project_role_mappings"]
 118                     else:
 119                         project_data = values["changes"]["add_project_role_mappings"]
 120                     self.service.create_grafana_team_member(project_data, user_id)
 121             elif topic == "project" and key == "created":
 122                 log.debug("Received message from kafka for creating team")
 123                 team_name = values["name"]
 124                 self.service.create_grafana_team(team_name)
 125             elif topic == "project" and key == "deleted":
 126                 log.debug("Received message from kafka for deleting team")
 127                 project_name = values["name"]
 128                 self.service.delete_grafana_team(project_name)
 129             elif topic == "project" and key == "edited":
 130                 log.debug("Received message from kafka for team name update")
 131                 project_old_name = values["original"]["name"]
 132                 project_new_name = values["changes"]["name"]
 133                 self.service.update_grafana_team(project_new_name, project_old_name)
 134         except Exception:
 135             log.exception("Exception processing message: ")
 136
 137     def dashboard_forever(self):
 138         log.debug("dashboard_forever")
 139         grafana_parsed_uri = urlparse(self.conf.get("grafana", "url"))
 140         while True:
 141             try:
 142                 socket.gethostbyname(grafana_parsed_uri.hostname)
 143                 log.debug("Dashboard backend is running")
 144             except socket.error:
 145                 log.debug("Dashboard backend is not available")
 146                 time.sleep(int(self.conf.get("dashboarder", "interval")))
 147                 continue
 148             try:
 149                 self.create_dashboards()
 150                 time.sleep(int(self.conf.get("dashboarder", "interval")))
 151             except Exception:
 152                 log.exception("Error creating dashboards")
 153
 154     def create_dashboards(self):
 155         self.service.create_dashboards()
 156         log.debug("Dashboarder Service > create_dashboards called!")