com.google.android.gcm.server.Sender Java Examples

private void sendGcmAlert(String subId, String regId)
    throws IOException {
  String gcmKey = backendConfigManager.getGcmKey();
  boolean isGcmKeySet = !(gcmKey == null || gcmKey.trim().length() == 0);

  // Only attempt to send GCM if GcmKey is available
  if (isGcmKeySet) {
    Sender sender = new Sender(gcmKey);
    Message message = new Message.Builder().addData(SubscriptionUtility.GCM_KEY_SUBID, subId)
        .build();
    Result r = sender.send(message, regId, GCM_SEND_RETRIES);
    if (r.getMessageId() != null) {
      log.info("ProspectiveSearchServlet: GCM sent: subId: " + subId);
    } else {
      log.warning("ProspectiveSearchServlet: GCM error for subId: " + subId +
          ", senderId: " + gcmKey + ", error: " + r.getErrorCodeName());
      ArrayList<String> deviceIds = new ArrayList<String>();
      deviceIds.add(regId);
      SubscriptionUtility.clearSubscriptionAndDeviceEntity(deviceIds);
    }
  } else {
    // Otherwise, just write a log entry
    log.info(String.format("ProspectiveSearchServlet: GCM is not sent: GcmKey: %s ", 
        isGcmKeySet));
  }
}
 

private void sendGcmAlert(String subId, String regId)
    throws IOException {
  String gcmKey = backendConfigManager.getGcmKey();
  boolean isGcmKeySet = !(gcmKey == null || gcmKey.trim().length() == 0);

  // Only attempt to send GCM if GcmKey is available
  if (isGcmKeySet) {
    Sender sender = new Sender(gcmKey);
    Message message = new Message.Builder().addData(SubscriptionUtility.GCM_KEY_SUBID, subId)
        .build();
    Result r = sender.send(message, regId, GCM_SEND_RETRIES);
    if (r.getMessageId() != null) {
      log.info("ProspectiveSearchServlet: GCM sent: subId: " + subId);
    } else {
      log.warning("ProspectiveSearchServlet: GCM error for subId: " + subId +
          ", senderId: " + gcmKey + ", error: " + r.getErrorCodeName());
      ArrayList<String> deviceIds = new ArrayList<String>();
      deviceIds.add(regId);
      SubscriptionUtility.clearSubscriptionAndDeviceEntity(deviceIds);
    }
  } else {
    // Otherwise, just write a log entry
    log.info(String.format("ProspectiveSearchServlet: GCM is not sent: GcmKey: %s ", 
        isGcmKeySet));
  }
}
 

/**
 * This accepts a message and persists it in the AppEngine datastore, it 
 * will also broadcast the message to upto 10 registered android devices
 * via Google Cloud Messaging
 *  
 * @param message
 *            the entity to be inserted.
 * @return 
 * @throws IOException
 */
@ApiMethod(name = "sendMessage")
public void sendMessage(@Named("message") String message)
    throws IOException {
  Sender sender = new Sender(API_KEY);
  // create a MessageData entity with a timestamp of when it was
  // received, and persist it
  MessageData messageObj = new MessageData();
  messageObj.setMessage(message);
  messageObj.setTimestamp(System.currentTimeMillis());
  EntityManager mgr = getEntityManager();
  try {
    mgr.persist(messageObj);
  } finally {
    mgr.close();
  }
  // ping a max of 10 registered devices
  CollectionResponse<DeviceInfo> response = endpoint.listDeviceInfo(null,
      10);
  for (DeviceInfo deviceInfo : response.getItems()) {
    doSendViaGcm(message, sender, deviceInfo);
  }
}
 

public void init(Map<String, Object> props) throws ConfigurationException {
    gcmProjectId = (String) props.get("gcm-projectid");
    gcmApiKey = (String) props.get("gcm-apikey");

    if (gcmApiKey != null)
        gcmSender = new Sender(gcmApiKey);
}
 

/**
 * Sends the message using the Sender object to the registered device.
 * 
 * @param message
 *            the message to be sent in the GCM ping to the device.
 * @param sender
 *            the Sender object to be used for ping,
 * @param deviceInfo
 *            the registration id of the device.
 * @return Result the result of the ping.
 */
private static Result doSendViaGcm(String message, Sender sender,
    DeviceInfo deviceInfo) throws IOException {
  // Trim message if needed.
  if (message.length() > 1000) {
    message = message.substring(0, 1000) + "[...]";
  }

  // This message object is a Google Cloud Messaging object, it is NOT 
  // related to the MessageData class
  Message msg = new Message.Builder().addData("message", message).build();
  Result result = sender.send(msg, deviceInfo.getDeviceRegistrationID(),
      5);
  if (result.getMessageId() != null) {
    String canonicalRegId = result.getCanonicalRegistrationId();
    if (canonicalRegId != null) {
      endpoint.removeDeviceInfo(deviceInfo.getDeviceRegistrationID());
      deviceInfo.setDeviceRegistrationID(canonicalRegId);
      endpoint.insertDeviceInfo(deviceInfo);
    }
  } else {
    String error = result.getErrorCodeName();
    if (error.equals(Constants.ERROR_NOT_REGISTERED)) {
      endpoint.removeDeviceInfo(deviceInfo.getDeviceRegistrationID());
    }
  }

  return result;
}
 

/**
 * Send to the first NUMBER_OF_DEVICE devices (you can modify this to send
 * to any number of devices or a specific device).
 * @param payload The message to send
 * @throws java.io.IOException if unable to send the message.
 */
@ApiMethod(httpMethod = "POST")
public final void sendMessage(final ImmutableMap<String, String> payload)
        throws IOException {
    if (payload == null || payload.size() == 0) {
        LOG.warning("Not sending message because payload is empty");
        return;
    }

    Sender sender = new Sender(Constants.GCM_API_KEY);
    Message msg = new Message.Builder()
            .setData(payload)
            .build();
    List<Registration> records = ofy().load()
            .type(Registration.class).limit(NUMBER_OF_DEVICES)
            .list();
    for (Registration record : records) {
        Result result = sender.send(msg, record.getRegId(),
                MAXIMUM_RETRIES);
        if (result.getMessageId() != null) {
            LOG.info("Message sent to " + record.getRegId());
            String canonicalRegId = result.getCanonicalRegistrationId();
            if (canonicalRegId != null) {
                // if the regId changed, we have to update the datastore
                LOG.info("Registration Id changed for " + record.getRegId()
                        + " updating to "
                        + canonicalRegId);
                record.setRegId(canonicalRegId);
                ofy().save().entity(record).now();
            }
        } else {
            String error = result.getErrorCodeName();
            if (error.equals(com.google.android.gcm.server.
                    Constants.ERROR_NOT_REGISTERED)) {
                LOG.warning("Registration Id " + record.getRegId()
                        + " no longer registered with GCM, "
                        + "removing from datastore");
                // if the device is no longer registered with Gcm, remove it
                // from the datastore
                ofy().delete().entity(record).now();
            } else {
                LOG.warning("Error when sending message : " + error);
            }
        }
    }
}
 

/**
 *
 * @param message The message to send
 */
@ApiMethod(name = "sendMessage")
public void sendMessage(@Named("message") String message, User user) throws IOException, OAuthRequestException {
    if(user == null){
        throw new OAuthRequestException("Not authorized");
    }
    final String userId = PresenterRecord.getUserId(user.getEmail());
    if(com.zuluindia.watchpresenter.backend.Constants.KEEP_ALIVE_MESSAGE.equals(
            message)){
        log.fine("Keep alive from userId: " + userId);
        //This is just a keep-alive. Nothing to do here...
        return;
    }
    log.info("UserId: " + userId);
    if (message == null || message.trim().length() == 0) {
        log.warning("Not sending message because it is empty");
        return;
    }
    // crop longer messages
    if (message.length() > 1000) {
        message = message.substring(0, 1000) + "[...]";
    }
    Sender sender = new Sender(API_KEY);
    Message msg = new Message.Builder().collapseKey("WatchPresenter").timeToLive(0).
            addData("message", message).build();
    PresenterRecord presenterRecord =
            ofy().load().key(Key.create(PresenterRecord.class,userId)).now();
    if(presenterRecord != null) {
        Iterator<String> regIdsIterator = presenterRecord.getRegIds().iterator();
        while (regIdsIterator.hasNext()) {
            String regId = regIdsIterator.next();
            Result result = sender.send(msg, regId, 5);
            if (result.getMessageId() != null) {
                log.info("Message sent to " + regId);
                String canonicalRegId = result.getCanonicalRegistrationId();
                if (canonicalRegId != null) {
                    // if the regId changed, we have to update the datastore
                    log.info("Registration Id changed for " + regId + ". Updating to " + canonicalRegId);
                    regIdsIterator.remove();
                    HashSet<String> newSet = new HashSet<String>(presenterRecord.getRegIds());
                    newSet.add(canonicalRegId);
                    presenterRecord.setRegIds(newSet);
                    ofy().save().entity(presenterRecord).now();
                }
            } else {
                String error = result.getErrorCodeName();
                if (error.equals(Constants.ERROR_NOT_REGISTERED)) {
                    log.warning("Registration Id " + regId + " no longer registered with GCM, removing from datastore");
                    // if the device is no longer registered with Gcm, remove it from the datastore
                    regIdsIterator.remove();
                    ofy().save().entity(presenterRecord).now();
                } else {
                    log.warning("Error when sending message : " + error);
                }
            }
        }
    }
    else{
        log.info("No presenters found for userId: '" + userId + "'");
    }
}
 

private String sendMessageToDevice(String email, String input) throws ServerDAO.DAOException, IOException {

        Credentials user = getUserByEmail(dao,email);

        Sender sender = new Sender(keyManager.getPushKey());
        Message message = new Message.Builder().addData("body", input).build();

        MulticastResult result = sender.send(message, Arrays.asList(user.getPushMessagingKey()), 5);

        System.out.println("Result = " + result);
        return result.toString();
    }