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                 log.info("Sucessfully subscribed to kafka topic(s) %s", str(topics))
  56                 break
  57             except Exception as e:
  58                 # Failed to subscribe to kafka topics
  59                 log.error("Error when subscribing to topic(s) %s", str(topics))
  60                 log.exception("Exception %s", str(e))
  61                 # Wait for some time for kaka to stabilize and then reattempt to subscribe again
  62                 time.sleep(wait_time)
  63                 log.info("Retrying to subscribe the kafka topic(s) %s", str(topics))
  64
  65     async def _user_msg(self, topic, key, values):
  66         log.debug(
  67             "Message from kafka bus received: topic: %s and values: %s and key: %s",
  68             topic,
  69             values,
  70             key,
  71         )
  72         try:
  73             if topic == "users" and key == "created":
  74                 log.debug("Received message from kafka for creating user")
  75                 if values.get("username"):
  76                     user = values["username"]
  77                 else:
  78                     user = values["changes"]["username"]
  79                 self.service.create_grafana_user(user)
  80                 # user-created and mapping is done with osm cli
  81                 if values.get("changes"):
  82                     # user-project-role mapping is included in change
  83                     if values["changes"].get("project_role_mappings"):
  84                         user_id = values["_id"]
  85                         project_data = values["changes"]["project_role_mappings"]
  86                         project_list = values["changes"].get("projects")
  87                         self.service.create_grafana_team_member(
  88                             project_data, user_id, project_list
  89                         )
  90                 elif values.get("project_role_mappings"):
  91                     # for fresh project-role-mapping
  92                     user_id = values.get("_id")
  93                     project_data = values["project_role_mappings"]
  94                     if user_id:
  95                         self.service.create_grafana_team_member(project_data, user_id)
  96                     else:
  97                         # for keystone we will get username
  98                         self.service.create_grafana_team_member(
  99                             project_data, user=values["username"]
 100                         )
 101             elif topic == "users" and key == "deleted":
 102                 log.debug("Received message from kafka for deleting user")
 103                 user = values["username"]
 104                 self.service.delete_grafana_user(user)
 105             elif topic == "users" and key == "edited":
 106                 log.debug("Received message from kafka for associating user to team")
 107                 user_id = values["_id"]
 108                 if values["changes"].get("remove_project_role_mappings") and not values[
 109                     "changes"
 110                 ].get("add_project_role_mappings"):
 111                     # Removing user-project role mapping
 112                     self.service.remove_grafana_team_members(
 113                         user_id, values["changes"].get("remove_project_role_mappings")
 114                     )
 115                 else:
 116                     # Changing user project role mapping
 117                     if values["changes"].get("project_role_mappings"):
 118                         project_data = values["changes"]["project_role_mappings"]
 119                     else:
 120                         project_data = values["changes"]["add_project_role_mappings"]
 121                     self.service.create_grafana_team_member(project_data, user_id)
 122             elif topic == "project" and key == "created":
 123                 log.debug("Received message from kafka for creating team")
 124                 team_name = values["name"]
 125                 self.service.create_grafana_team(team_name)
 126             elif topic == "project" and key == "deleted":
 127                 log.debug("Received message from kafka for deleting team")
 128                 project_name = values["name"]
 129                 self.service.delete_grafana_team(project_name)
 130             elif topic == "project" and key == "edited":
 131                 log.debug("Received message from kafka for team name update")
 132                 project_old_name = values["original"]["name"]
 133                 project_new_name = values["changes"]["name"]
 134                 self.service.update_grafana_team(project_new_name, project_old_name)
 135         except Exception:
 136             log.exception("Exception processing message: ")
 137
 138     def dashboard_forever(self):
 139         log.debug("dashboard_forever")
 140         grafana_parsed_uri = urlparse(self.conf.get("grafana", "url"))
 141         while True:
 142             try:
 143                 socket.gethostbyname(grafana_parsed_uri.hostname)
 144                 log.debug("Dashboard backend is running")
 145             except socket.error:
 146                 log.debug("Dashboard backend is not available")
 147                 time.sleep(int(self.conf.get("dashboarder", "interval")))
 148                 continue
 149             try:
 150                 self.create_dashboards()
 151                 time.sleep(int(self.conf.get("dashboarder", "interval")))
 152             except Exception:
 153                 log.exception("Error creating dashboards")
 154
 155     def create_dashboards(self):
 156         self.service.create_dashboards()
 157         log.debug("Dashboarder Service > create_dashboards called!")