database.py 文件源码

def get_or_create_service(service_infos):
    """
        Create service or get it if exists
    """
    valid_infos = {}
    for key, value in service_infos.iteritems():
        if key in SERVICE_FIELDS:
            valid_infos[key] = value
    try:
        service, _ = Service.objects.get_or_create(**valid_infos)
    except MultipleObjectsReturned:
        service = Service.objects.filter(name=valid_infos['name'])[0]
    return service