text: import hashlib
  import os
  import socket
  import sys
  import base64
  import time
  from django.db.models import F, Q
  from xos.config import Config
  from synchronizers.base.syncstep import SyncStep
  from synchronizers.base.ansible import run_template_ssh
  from synchronizers.base.SyncInstanceUsingAnsible import SyncInstanceUsingAnsible
  from core.models import Service, Slice
  from services.ceilometer.models import CeilometerService, MonitoringChannel
  from xos.logger import Logger, logging
  
  parentdir = os.path.join(os.path.dirname(__file__),"..")
  sys.path.insert(0,parentdir)
  
  logger = Logger(level=logging.INFO)
  
  class SyncMonitoringChannel(SyncInstanceUsingAnsible):
      provides=[MonitoringChannel]
      observes=MonitoringChannel
      requested_interval=0
      template_name = "sync_monitoringchannel.yaml"
      service_key_name = "/opt/xos/synchronizers/monitoring_channel/monitoring_channel_private_key"
  
      def __init__(self, *args, **kwargs):
          super(SyncMonitoringChannel, self).__init__(*args, **kwargs)
  
      def fetch_pending(self, deleted):
          if (not deleted):
              objs = MonitoringChannel.get_tenant_objects().filter(Q(enacted__lt=F('updated')) | Q(enacted=None),Q(lazy_blocked=False))
          else:
              objs = MonitoringChannel.get_deleted_tenant_objects()
  
          return objs
  
      def get_extra_attributes(self, o):
          # This is a place to include extra attributes. In the case of Monitoring Channel, we need to know
          #   1) Allowed tenant ids
          #   2) Ceilometer API service endpoint URL if running externally
          #   3) Credentials to access Ceilometer API service
  
          ceilometer_services = CeilometerService.get_service_objects().filter(id=o.provider_service.id)
          if not ceilometer_services:
              raise "No associated Ceilometer service"
          ceilometer_service = ceilometer_services[0]
          ceilometer_pub_sub_url = ceilometer_service.ceilometer_pub_sub_url
          if not ceilometer_pub_sub_url:
              ceilometer_pub_sub_url = ''
          instance = self.get_instance(o)
  
          try:
              full_setup = Config().observer_full_setup
          except:
              full_setup = True
  
          fields = {"unique_id": o.id,
                    "allowed_tenant_ids": o.tenant_list,
                    "auth_url":instance.controller.auth_url,
                    "admin_user":instance.controller.admin_user,
                    "admin_password":instance.controller.admin_password,
                    "admin_tenant":instance.controller.admin_tenant,
                    "ceilometer_pub_sub_url": ceilometer_pub_sub_url,
                    "full_setup": full_setup}
  
          return fields
  
      def run_playbook(self, o, fields):
          #ansible_hash = hashlib.md5(repr(sorted(fields.items()))).hexdigest()
          #quick_update = (o.last_ansible_hash == ansible_hash)
  
          #if quick_update:
          #    logger.info("quick_update triggered; skipping ansible recipe")
          #else:
          super(SyncMonitoringChannel, self).run_playbook(o, fields)
  
          #o.last_ansible_hash = ansible_hash
  
      def map_delete_inputs(self, o):
          fields = {"unique_id": o.id,
                    "delete": True}
          return fields
  