Examples with RadioStation joynr.vehicle.RadioStation used on opensource projects

Example 1 with RadioStation

use of joynr.vehicle.RadioStation in project joynr by bmwcarit.

the class MyRadioConsumerApplication method run.

@SuppressWarnings("checkstyle:methodlength")
@Override
public void run() {
    DiscoveryQos discoveryQos = new DiscoveryQos();
    // As soon as the arbitration QoS is set on the proxy builder, discovery of suitable providers
    // is triggered. If the discovery process does not find matching providers within the
    // arbitration timeout duration it will be terminated and you will get an arbitration exception.
    discoveryQos.setDiscoveryTimeoutMs(10000);
    discoveryQos.setDiscoveryScope(discoveryScope);
    // Provider entries in the global capabilities directory are cached locally. Discovery will
    // consider entries in this cache valid if they are younger as the max age of cached
    // providers as defined in the QoS. All valid entries will be processed by the arbitrator when searching
    // for and arbitrating the "best" matching provider.
    // NOTE: Valid cache entries might prevent triggering a lookup in the global capabilities
    // directory. Therefore, not all providers registered with the global capabilities
    // directory might be taken into account during arbitration.
    discoveryQos.setCacheMaxAgeMs(Long.MAX_VALUE);
    // The discovery process outputs a list of matching providers. The arbitration strategy then
    // chooses one or more of them to be used by the proxy.
    discoveryQos.setArbitrationStrategy(ArbitrationStrategy.HighestPriority);
    // The provider will maintain at least a minimum interval idle time in milliseconds between
    // successive notifications, even if on-change notifications are enabled and the value changes more
    // often. This prevents the consumer from being flooded by updated values. The filtering happens on
    // the provider's side, thus also preventing excessive network traffic.
    int minInterval_ms = 0;
    // The provider will send notifications every maximum interval in milliseconds, even if the value didn't
    // change. It will send notifications more often if on-change notifications are enabled,
    // the value changes more often, and the minimum interval QoS does not prevent it. The maximum interval
    // can thus be seen as a sort of heart beat.
    int maxInterval_ms = 10000;
    // The provider will send notifications until the end date is reached. The consumer will not receive any
    // notifications (neither value notifications nor missed publication notifications) after
    // this date.
    long validityMs = 60000;
    // If no notification was received within the last alert interval, a missed publication
    // notification will be raised.
    int alertAfterInterval_ms = 20000;
    // Notification messages will be sent with this time-to-live. If a notification message can not be
    // delivered within its TTL, it will be deleted from the system.
    // NOTE: If a notification message is not delivered due to an expired TTL, it might raise a
    // missed publication notification (depending on the value of the alert interval QoS).
    int publicationTtl_ms = 5000;
    OnChangeWithKeepAliveSubscriptionQos subscriptionQos = new OnChangeWithKeepAliveSubscriptionQos();
    subscriptionQos.setMinIntervalMs(minInterval_ms).setMaxIntervalMs(maxInterval_ms).setValidityMs(validityMs);
    subscriptionQos.setAlertAfterIntervalMs(alertAfterInterval_ms).setPublicationTtlMs(publicationTtl_ms);
    ProxyBuilder<RadioProxy> proxyBuilder = runtime.getProxyBuilder(providerDomain, RadioProxy.class);
    try {
        // getting an attribute
        radioProxy = proxyBuilder.setMessagingQos(new MessagingQos()).setDiscoveryQos(discoveryQos).build();
        RadioStation currentStation = radioProxy.getCurrentStation();
        LOG.info(PRINT_BORDER + "ATTRIBUTE GET: current station: " + currentStation + PRINT_BORDER);
        // subscribe to an attribute
        subscriptionFutureCurrentStation = radioProxy.subscribeToCurrentStation(new AttributeSubscriptionAdapter<RadioStation>() {

            @Override
            public void onReceive(RadioStation value) {
                LOG.info(PRINT_BORDER + "ATTRIBUTE SUBSCRIPTION: current station: " + value + PRINT_BORDER);
            }

            @Override
            public void onError(JoynrRuntimeException error) {
                LOG.info(PRINT_BORDER + "ATTRIBUTE SUBSCRIPTION: " + error + PRINT_BORDER);
            }
        }, subscriptionQos);
        // broadcast subscription
        // The provider will send a notification whenever the value changes.
        MulticastSubscriptionQos weakSignalBroadcastSubscriptionQos;
        // The consumer will be subscribed to the multicast until the end date is reached, after which the
        // consumer will be automatically unsubscribed, and will not receive any further notifications
        // this date.
        long wsbValidityMs = 60 * 1000;
        weakSignalBroadcastSubscriptionQos = new MulticastSubscriptionQos();
        weakSignalBroadcastSubscriptionQos.setValidityMs(wsbValidityMs);
        weakSignalFuture = subscribeToWeakSignal(weakSignalBroadcastSubscriptionQos);
        // susbcribe to weak signal with partition "GERMANY"
        weakSignalWithPartitionFuture = subscribeToWeakSignal(weakSignalBroadcastSubscriptionQos, "GERMANY");
        // selective broadcast subscription
        OnChangeSubscriptionQos newStationDiscoveredBroadcastSubscriptionQos;
        int nsdbMinIntervalMs = 2 * 1000;
        long nsdbValidityMs = 180 * 1000;
        int nsdbPublicationTtlMs = 5 * 1000;
        newStationDiscoveredBroadcastSubscriptionQos = new OnChangeSubscriptionQos();
        newStationDiscoveredBroadcastSubscriptionQos.setMinIntervalMs(nsdbMinIntervalMs).setValidityMs(nsdbValidityMs).setPublicationTtlMs(nsdbPublicationTtlMs);
        NewStationDiscoveredBroadcastFilterParameters newStationDiscoveredBroadcastFilterParams = new NewStationDiscoveredBroadcastFilterParameters();
        newStationDiscoveredBroadcastFilterParams.setHasTrafficService("true");
        // Munich
        GeoPosition positionOfInterest = new GeoPosition(48.1351250, 11.5819810);
        String positionOfInterestJson = null;
        try {
            positionOfInterestJson = objectMapper.writeValueAsString(positionOfInterest);
        } catch (JsonProcessingException e1) {
            LOG.error("Unable to write position of interest filter parameter to JSON", e1);
        }
        newStationDiscoveredBroadcastFilterParams.setPositionOfInterest(positionOfInterestJson);
        // 200 km
        newStationDiscoveredBroadcastFilterParams.setRadiusOfInterestArea("200000");
        radioProxy.subscribeToNewStationDiscoveredBroadcast(new RadioBroadcastInterface.NewStationDiscoveredBroadcastAdapter() {

            @Override
            public void onReceive(RadioStation discoveredStation, GeoPosition geoPosition) {
                LOG.info(PRINT_BORDER + "BROADCAST SUBSCRIPTION: new station discovered: " + discoveredStation + " at " + geoPosition + PRINT_BORDER);
            }
        }, newStationDiscoveredBroadcastSubscriptionQos, newStationDiscoveredBroadcastFilterParams);
        boolean success;
        try {
            // add favorite radio station
            RadioStation favoriteStation = new RadioStation("99.3 The Fox Rocks", false, Country.CANADA);
            success = radioProxy.addFavoriteStation(favoriteStation);
            LOG.info(PRINT_BORDER + "METHOD: added favorite station: " + favoriteStation + ": " + success + PRINT_BORDER);
            success = radioProxy.addFavoriteStation(favoriteStation);
        } catch (ApplicationException exception) {
            AddFavoriteStationErrorEnum error = exception.getError();
            switch(error) {
                case DUPLICATE_RADIOSTATION:
                    LOG.info(PRINT_BORDER + "METHOD: addFavoriteStation failed with the following excpected error: " + error);
                    break;
                default:
                    LOG.error(PRINT_BORDER + "METHOD: addFavoriteStation failed with an unexpected error: " + error);
                    break;
            }
        }
        try {
            // add favorite radio station
            RadioStation favoriteStation = new RadioStation("", false, Country.GERMANY);
            success = radioProxy.addFavoriteStation(favoriteStation);
            LOG.info(PRINT_BORDER + "METHOD: addFavoriteStation completed unexpected with the following output: " + success);
        } catch (ApplicationException exception) {
            String errorName = exception.getError().name();
            LOG.info(PRINT_BORDER + "METHOD: addFavoriteStation failed with the following unexpected ApplicationExcecption: " + errorName);
        } catch (ProviderRuntimeException exception) {
            String errorName = exception.getMessage();
            String expectation = errorName.equals(MyRadioProvider.MISSING_NAME) ? "expected" : "unexpected";
            LOG.info(PRINT_BORDER + "METHOD: addFavoriteStation failed with the following " + expectation + " exception: " + errorName);
        }
        // shuffle the stations
        radioProxy.shuffleStations();
        currentStation = radioProxy.getCurrentStation();
        LOG.info(PRINT_BORDER + "The current radio station after shuffling is: " + currentStation + PRINT_BORDER);
        // add favorite radio station async
        RadioStation radioStation = new RadioStation("99.4 AFN", false, Country.GERMANY);
        Future<Boolean> future = radioProxy.addFavoriteStation(new CallbackWithModeledError<Boolean, AddFavoriteStationErrorEnum>() {

            @Override
            public void onSuccess(Boolean result) {
                LOG.info(PRINT_BORDER + "ASYNC METHOD: added favorite station: callback onSuccess" + PRINT_BORDER);
            }

            @Override
            public void onFailure(JoynrRuntimeException error) {
                LOG.info(PRINT_BORDER + "ASYNC METHOD: added favorite station: callback onFailure: " + error.getMessage() + PRINT_BORDER);
            }

            @Override
            public void onFailure(AddFavoriteStationErrorEnum errorEnum) {
                switch(errorEnum) {
                    case DUPLICATE_RADIOSTATION:
                        LOG.info(PRINT_BORDER + "ASYNC METHOD: added favorite station failed: Duplicate Station!" + PRINT_BORDER);
                        break;
                    default:
                        LOG.error(PRINT_BORDER + "ASYNC METHOD: added favorite station failed: unknown errorEnum:" + errorEnum + PRINT_BORDER);
                        break;
                }
                LOG.info(PRINT_BORDER + "ASYNC METHOD: added favorite station: callback onFailure: " + errorEnum + PRINT_BORDER);
            }
        }, radioStation);
        try {
            long timeoutInMilliseconds = 8000;
            Boolean reply = future.get(timeoutInMilliseconds);
            LOG.info(PRINT_BORDER + "ASYNC METHOD: added favorite station: " + radioStation + ": " + reply + PRINT_BORDER);
        } catch (InterruptedException | JoynrRuntimeException | ApplicationException e) {
            LOG.info(PRINT_BORDER + "ASYNC METHOD: added favorite station: " + radioStation + ": " + e.getClass().getSimpleName() + "!");
        }
        ConsoleReader console;
        try {
            console = new ConsoleReader();
            int key;
            while ((key = console.readCharacter()) != 'q') {
                switch(key) {
                    case 's':
                        radioProxy.shuffleStations();
                        LOG.info("called shuffleStations");
                        break;
                    case 'm':
                        GetLocationOfCurrentStationReturned locationOfCurrentStation = radioProxy.getLocationOfCurrentStation();
                        LOG.info("called getLocationOfCurrentStation. country: " + locationOfCurrentStation.country + ", location: " + locationOfCurrentStation.location);
                        break;
                    default:
                        LOG.info("\n\nUSAGE press\n" + " q\tto quit\n" + " s\tto shuffle stations\n");
                        break;
                }
            }
        } catch (IOException e) {
            LOG.error("error reading input from console", e);
        }
    } catch (DiscoveryException e) {
        LOG.error("No provider found", e);
    } catch (JoynrCommunicationException e) {
        LOG.error("The message was not sent: ", e);
    }
}

Example 2 with RadioStation

use of joynr.vehicle.RadioStation in project joynr by bmwcarit.

the class MyRadioProvider method fireNewStationDiscoveredEvent.

public void fireNewStationDiscoveredEvent() {
    RadioStation discoveredStation = currentStation;
    GeoPosition geoPosition = countryGeoPositionMap.get(discoveredStation.getCountry());
    LOG.info(PRINT_BORDER + "fire newStationDiscoveredEvent: " + discoveredStation + " at " + geoPosition + PRINT_BORDER);
    fireNewStationDiscovered(discoveredStation, geoPosition);
}

Example 3 with RadioStation

use of joynr.vehicle.RadioStation in project joynr by bmwcarit.

the class MyRadioProvider method addFavoriteStation.

@Override
public Promise<AddFavoriteStationDeferred> addFavoriteStation(final RadioStation radioStation) {
    final AddFavoriteStationDeferred deferred = new AddFavoriteStationDeferred();
    if (radioStation.getName().isEmpty()) {
        deferred.reject(new ProviderRuntimeException(MISSING_NAME));
    }
    executorService.schedule(new Runnable() {

        @Override
        public void run() {
            boolean duplicateFound = false;
            for (RadioStation station : stationsList) {
                if (!duplicateFound && station.getName().equals(radioStation.getName())) {
                    duplicateFound = true;
                    deferred.reject(AddFavoriteStationErrorEnum.DUPLICATE_RADIOSTATION);
                    break;
                }
            }
            if (!duplicateFound) {
                LOG.info(PRINT_BORDER + "addFavoriteStation(" + radioStation + ")" + PRINT_BORDER);
                stationsList.add(radioStation);
                deferred.resolve(true);
            }
        }
    }, DELAY_MS, TimeUnit.MILLISECONDS);
    // Promise is returned immediately. Deferred is resolved later
    return new Promise<AddFavoriteStationDeferred>(deferred);
}

Example 4 with RadioStation

use of joynr.vehicle.RadioStation in project joynr by bmwcarit.

the class RadioStationDatabase method initialiseRadioStations.

@PostConstruct
public void initialiseRadioStations() {
    radioStations.add(new RadioStation("ABC Trible J", true, Country.AUSTRALIA));
    radioStations.add(new RadioStation("Radio Popolare", false, Country.ITALY));
    radioStations.add(new RadioStation("JAZZ.FM91", false, Country.CANADA));
    radioStations.add(new RadioStation("Bayern 3", true, Country.GERMANY));
}

Example 5 with RadioStation

use of joynr.vehicle.RadioStation in project joynr by bmwcarit.

the class MyRadioProvider method shuffleStations.

@Override
public Promise<DeferredVoid> shuffleStations() {
    final DeferredVoid deferred = new DeferredVoid();
    // actions that take longer must be run in an appliction thread.
    // DO NOT block joynr threads
    executorService.schedule(new Runnable() {

        @Override
        public void run() {
            RadioStation oldStation = currentStation;
            currentStationIndex++;
            currentStationIndex = currentStationIndex % stationsList.size();
            currentStation = stationsList.get(currentStationIndex);
            currentStationChanged(currentStation);
            LOG.info(PRINT_BORDER + "shuffleStations: " + oldStation + " -> " + currentStation + PRINT_BORDER);
            deferred.resolve();
        }
    }, DELAY_MS, TimeUnit.MILLISECONDS);
    // Promise is returned immediately. Deferred is resolved later
    return new Promise<DeferredVoid>(deferred);
}