private ClientResponse sendRequest(ServerRequest request) throws Exception {
ResponseHolder responseHolder = new ResponseHolder();
responseHolders.put(request.getRequestId(), responseHolder);
requestObserver.onNext(request);
// timeout is in case agent never responds
// passing ClientResponse.getDefaultInstance() is just dummy (non-null) value
ClientResponse response =
responseHolder.response.exchange(ClientResponse.getDefaultInstance(), 1, HOURS);
if (response.getMessageCase() == MessageCase.UNKNOWN_REQUEST_RESPONSE) {
throw new OutdatedAgentException();
}
if (response.getMessageCase() == MessageCase.EXCEPTION_RESPONSE) {
throw new AgentException();
}
return response;
}
