/**
* Publish data to the IBM Internet of Things Foundation.<br>
* This method allows QoS to be passed as an argument
*
* @param event Name of the dataset under which to publish the data
* @param data Object to be added to the payload as the dataset
* @param qos Quality of Service - should be 0, 1 or 2
* @return Whether the send was successful.
*/
public boolean publishEvent(String event, Object data, int qos) {
if (!isConnected()) {
return false;
}
final String METHOD = "publishEvent(2)";
JsonObject payload = new JsonObject();
String timestamp = ISO8601_DATE_FORMAT.format(new Date());
payload.addProperty("ts", timestamp);
JsonElement dataElement = gson.toJsonTree(data);
payload.add("d", dataElement);
String topic = "iot-2/evt/" + event + "/fmt/json";
LoggerUtility.fine(CLASS_NAME, METHOD, "Topic = " + topic);
LoggerUtility.fine(CLASS_NAME, METHOD, "Payload = " + payload.toString());
MqttMessage msg = new MqttMessage(payload.toString().getBytes(Charset.forName("UTF-8")));
msg.setQos(qos);
msg.setRetained(false);
try {
mqttAsyncClient.publish(topic, msg).waitForCompletion();
} catch (MqttPersistenceException e) {
e.printStackTrace();
return false;
} catch (MqttException e) {
e.printStackTrace();
return false;
}
return true;
}
public void sendMessage(String message) {
MqttMessage mqttMsg = new MqttMessage(message.getBytes());
mqttMsg.setQos(this.qos);
mqttMsg.setRetained(this.retained);
try {
log.info("Publishing message: " + mqttMsg + " to topic \"" + this.topic + "\"");
client.publish(this.topic, mqttMsg);
} catch (MqttPersistenceException e) {
log.error(e.getMessage());
} catch (MqttException e) {
log.error(e.getMessage());
}
}
public void publish(String topic, byte[] payload) {
if (androidClient.isConnected()) {
try {
androidClient.publish(topic, payload, qualityOfService, false);
} catch (MqttPersistenceException e) {
Log.i(DEBUG_TAG, e.getLocalizedMessage());
} catch (MqttException e) {
Log.i(DEBUG_TAG, e.getLocalizedMessage());
}
} else {
Log.i(DEBUG_TAG, "Could not publish. Client is not connected. Please connect first.");
}
}
public void handleDelivery(
String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
throws java.io.IOException {
String msg = new String(body);
System.out.println("Received: " + msg);
if (mqttClientInterface != null)
try {
System.out.println("Sending to MQTT...");
mqttClientInterface.PublishToMQTTserver(body);
System.out.println("Message Sent!");
} catch (MqttPersistenceException e) {
e.printStackTrace();
} catch (MqttException e) {
e.printStackTrace();
}
}
