def service_get_by_host_and_topic(context, host, topic):
    return IMPL.service_get_by_host_and_topic(context, host, topic)
Get a service by hostname and topic it listens to.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/db/api.py/service_get_by_host_and_topic