def get_service_states(self):
"""Get all the services associated with this relation.
@return: list of ServiceState instance associated with this relation.
"""
from juju.state.service import ServiceStateManager, ServiceState
service_manager = ServiceStateManager(self._client)
services = []
topology = yield service_manager._read_topology()
for service_id in topology.get_relation_services(
self.internal_relation_id):
service_name = topology.get_service_name(service_id)
service = ServiceState(self._client, service_id, service_name)
services.append(service)
returnValue(services)
