code: def __create_channel_run(self, channel, username, token):
          
          data = {
              'channel_id': channel.get_node_id().hex,
              'chef_name': self.__get_chef_name(),
              'ricecooker_version': __version__,
              'started_by_user': username,
              'started_by_user_token': token,
              'content_server': config.DOMAIN,
          }
          try:
              response = requests.post(
                  config.sushi_bar_channel_runs_url(),
                  data=data,
                  auth=AUTH)
              response.raise_for_status()
              return response.json()['run_id']
          except Exception as e:
              config.LOGGER.error('Error channel run: %s' % e)
          return None
docs: Sends a post request to create the channel run.