old_contents: # -*- coding: utf-8 -*-
  # Copyright 2016 matrix.org
  #
  # 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 ._base import Config
  
  
  class WorkerConfig(Config):
      """The workers are processes run separately to the main synapse process.
      They have their own pid_file and listener configuration. They use the
      replication_url to talk to the main synapse process."""
  
      def read_config(self, config):
          self.worker_app = config.get("worker_app")
          self.worker_listeners = config.get("worker_listeners")
          self.worker_daemonize = config.get("worker_daemonize")
          self.worker_pid_file = config.get("worker_pid_file")
          self.worker_log_file = config.get("worker_log_file")
          self.worker_log_config = config.get("worker_log_config")
          self.worker_replication_url = config.get("worker_replication_url")
  
new_contents: # -*- coding: utf-8 -*-
  # Copyright 2016 matrix.org
  #
  # 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 ._base import Config
  
  
  class WorkerConfig(Config):
      """The workers are processes run separately to the main synapse process.
      They have their own pid_file and listener configuration. They use the
      replication_url to talk to the main synapse process."""
  
      def read_config(self, config):
          self.worker_app = config.get("worker_app")
          self.worker_listeners = config.get("worker_listeners")
          self.worker_daemonize = config.get("worker_daemonize")
          self.worker_pid_file = config.get("worker_pid_file")
          self.worker_log_file = config.get("worker_log_file")
          self.worker_log_config = config.get("worker_log_config")
          self.worker_replication_url = config.get("worker_replication_url")
  
          if self.worker_listeners:
              for listener in self.worker_listeners:
                  bind_address = listener.pop("bind_address", None)
                  bind_addresses = listener.setdefault("bind_addresses", [])
  
                  if bind_address:
                      bind_addresses.append(bind_address)
                  elif not bind_addresses:
                      bind_addresses.append('')
  
subject: Make worker listener config backwards compat