text: # Copyright 2012 Managed I.T.
  #
  # Author: Kiall Mac Innes <kiall@managedit.ie>
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License. You may obtain
  # a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  # License for the specific language governing permissions and limitations
  # under the License.
  from oslo_config import cfg
  from oslo_log import log as logging
  from paste import deploy
  
  from designate.i18n import _LI
  from designate import exceptions
  from designate import utils
  from designate import service
  from designate import service_status
  
  
  LOG = logging.getLogger(__name__)
  
  
  class Service(service.WSGIService, service.Service):
      def __init__(self, threads=None):
          super(Service, self).__init__(threads=threads)
  
          emitter_cls = service_status.HeartBeatEmitter.get_driver(
              cfg.CONF.heartbeat_emitter.emitter_type
          )
          self.heartbeat_emitter = emitter_cls(
              self.service_name, self.tg, status_factory=self._get_status
          )
  
      def start(self):
          super(Service, self).start()
          self.heartbeat_emitter.start()
  
      def _get_status(self):
          status = "UP"
          stats = {}
          capabilities = {}
          return status, stats, capabilities
  
      @property
      def service_name(self):
          return 'api'
  
      @property
      def _wsgi_application(self):
          api_paste_config = cfg.CONF['service:api'].api_paste_config
          config_paths = utils.find_config(api_paste_config)
  
          if len(config_paths) == 0:
              msg = 'Unable to determine appropriate api-paste-config file'
              raise exceptions.ConfigurationError(msg)
  
          LOG.info(_LI('Using api-paste-config found at: %s'), config_paths[0])
  
          return deploy.loadapp("config:%s" % config_paths[0], name='osapi_dns')
  