private void doConnect() {
L.info(
"Connecting to MQTT broker "
+ mqttc.getServerURI()
+ " with CLIENTID="
+ mqttc.getClientId()
+ " and TOPIC PREFIX="
+ topicPrefix);
MqttConnectOptions copts = new MqttConnectOptions();
copts.setWill(topicPrefix + "connected", "0".getBytes(), 1, true);
copts.setCleanSession(true);
copts.setUserName("emonpi");
copts.setPassword("emonpimqtt2016".toCharArray());
try {
mqttc.connect(copts);
sendConnectionState();
L.info("Successfully connected to broker, subscribing to " + topicPrefix + "(set|get)/#");
try {
mqttc.subscribe(topicPrefix + "set/#", 1);
mqttc.subscribe(topicPrefix + "get/#", 1);
shouldBeConnected = true;
} catch (MqttException mqe) {
L.log(Level.WARNING, "Error subscribing to topic hierarchy, check your configuration", mqe);
throw mqe;
}
} catch (MqttException mqe) {
L.log(
Level.WARNING,
"Error while connecting to MQTT broker, will retry: " + mqe.getMessage(),
mqe);
queueConnect(); // Attempt reconnect
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.inject(this);
mapView.addLayer(
new ArcGISTiledMapServiceLayer(
"http://cache1.arcgisonline.cn/ArcGIS/rest/services/ChinaOnlineCommunity/MapServer"));
layer = new GraphicsLayer();
mapView.addLayer(layer);
mapView.getLocationDisplayManager().start();
mapView.getLocationDisplayManager().setLocationListener(this);
try {
client =
new MqttAndroidClient(
this, "tcp://broker.mqttdashboard.com:1883", "Likaci/MqttMap/" + id);
client.setCallback(this);
MqttConnectOptions options = new MqttConnectOptions();
options.setKeepAliveInterval(10);
options.setConnectionTimeout(1000);
options.setCleanSession(false);
client.connect(options, null, this);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public MqttConnectOptions getConnectionOptions() {
MqttConnectOptions options = new MqttConnectOptions();
if (this.cleanSession != null) {
options.setCleanSession(this.cleanSession);
}
if (this.connectionTimeout != null) {
options.setConnectionTimeout(this.connectionTimeout);
}
if (this.keepAliveInterval != null) {
options.setKeepAliveInterval(this.keepAliveInterval);
}
if (this.password != null) {
options.setPassword(this.password.toCharArray());
}
if (this.socketFactory != null) {
options.setSocketFactory(this.socketFactory);
}
if (this.sslProperties != null) {
options.setSSLProperties(this.sslProperties);
}
if (this.userName != null) {
options.setUserName(this.userName);
}
if (this.will != null) {
options.setWill(
this.will.getTopic(), this.will.getPayload(), this.will.getQos(), this.will.isRetained());
}
if (this.serverURIs != null) {
options.setServerURIs(this.serverURIs);
}
return options;
}
public static void main(String[] args) {
// The quality of service for the sent message.
int qualityOfService = 1;
// Memory persistence for client message deliver. Store it in a file in case
// lose connections to the broker.
MqttClientPersistence persistence = new MqttDefaultFilePersistence();
try {
Properties credentials = new Properties();
credentials.load(new FileInputStream(new File("/Users/keith/mqtt.properties")));
MqttClient client =
new MqttClient(
"ssl://smartspaces.io:8883", "/mqtt/publisher/credentialed/ssl", persistence);
client.setCallback(
new MqttCallback() {
@Override
public void connectionLost(Throwable cause) {
System.out.println("Lost connection");
cause.printStackTrace();
}
@Override
public void deliveryComplete(IMqttDeliveryToken token) {
System.out.println("Got delivery token " + token.getResponse());
}
@Override
public void messageArrived(String topic, MqttMessage message) throws Exception {
// Not needed since not subscribing.
}
});
MqttConnectOptions options = new MqttConnectOptions();
options.setCleanSession(true);
options.setUserName(credentials.getProperty("mqtt.username"));
options.setPassword(credentials.getProperty("mqtt.password").toCharArray());
options.setSocketFactory(configureSSLSocketFactory(credentials));
System.out.println("Connecting to broker: " + client.getServerURI());
client.connect(options);
System.out.println("Connected");
byte[] content = "Hello, world!".getBytes();
MqttMessage message = new MqttMessage(content);
message.setQos(qualityOfService);
client.publish("/greeting", message);
System.out.println("Message published");
client.disconnect();
System.out.println("Disconnected");
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
String topic = "/group/1ffb66a0-304e-11e5-a2cb-0800200c9a66/send_data";
String contentStr = "Message from KC";
int qos = 2;
String broker = "tcp://isplanet.dyndns-office.com:1883";
String clientId = "JavaSample";
MemoryPersistence persistence = new MemoryPersistence();
Content content = new Content();
content.setDevID("80:C1:6E:F3:E7:6B");
content.setDevName("KC");
content.setGroupID("1ffb66a0-304e-11e5-a2cb-0800200c9a66");
content.setSendTimestamp(String.valueOf(System.currentTimeMillis()));
Shot shot = new Shot();
shot.setMessage("Test");
shot.setImageUrl("http://ab.unayung.cc/uploads/photo/file/000/000/030/LN07_005.jpg");
shot.setPosition(new GeoPoint(25.042299, 121.507695));
content.setShot(shot);
contentStr = JsonDataFactory.getJson(content);
// System.exit(0);
try {
MqttClient sampleClient = new MqttClient(broker, clientId, persistence);
MqttConnectOptions connOpts = new MqttConnectOptions();
connOpts.setCleanSession(true);
System.out.println("Connecting to broker: " + broker);
sampleClient.connect(connOpts);
System.out.println("Connected");
System.out.println("Publishing message: " + contentStr);
MqttMessage message = new MqttMessage(contentStr.getBytes());
message.setQos(qos);
sampleClient.publish(topic, message);
System.out.println("Message published");
sampleClient.disconnect();
System.out.println("Disconnected");
System.exit(0);
} catch (MqttException me) {
System.out.println("reason " + me.getReasonCode());
System.out.println("msg " + me.getMessage());
System.out.println("loc " + me.getLocalizedMessage());
System.out.println("cause " + me.getCause());
System.out.println("excep " + me);
me.printStackTrace();
}
}
private void initMQTT() {
getLogger().info("Init MQTT");
try {
MqttConnectOptions connOpts = new MqttConnectOptions();
connOpts.setCleanSession(true);
this.mqttClient =
new MqttClient("tcp://elab.kr:1883", String.valueOf(this.getServiceId()), persistence);
this.mqttClient.setCallback(this.mqttCallback);
this.mqttClient.connect(connOpts);
} catch (MqttException e) {
getLogger().fatal("Not Connected MQTT broker", e);
}
}
public MQTTAdaptorListener(
MQTTBrokerConnectionConfiguration mqttBrokerConnectionConfiguration,
String topic,
String mqttClientId,
InputEventAdaptorListener inputEventAdaptorListener,
int tenantId) {
this.mqttBrokerConnectionConfiguration = mqttBrokerConnectionConfiguration;
this.mqttClientId = mqttClientId;
this.cleanSession = mqttBrokerConnectionConfiguration.isCleanSession();
this.keepAlive = mqttBrokerConnectionConfiguration.getKeepAlive();
this.topic = topic;
this.eventAdaptorListener = inputEventAdaptorListener;
this.tenantId = tenantId;
// SORTING messages until the server fetches them
String temp_directory = System.getProperty("java.io.tmpdir");
MqttDefaultFilePersistence dataStore = new MqttDefaultFilePersistence(temp_directory);
try {
// Construct the connection options object that contains connection parameters
// such as cleanSession and LWT
connectionOptions = new MqttConnectOptions();
connectionOptions.setCleanSession(cleanSession);
connectionOptions.setKeepAliveInterval(keepAlive);
if (this.mqttBrokerConnectionConfiguration.getBrokerPassword() != null) {
connectionOptions.setPassword(
this.mqttBrokerConnectionConfiguration.getBrokerPassword().toCharArray());
}
if (this.mqttBrokerConnectionConfiguration.getBrokerUsername() != null) {
connectionOptions.setUserName(this.mqttBrokerConnectionConfiguration.getBrokerUsername());
}
// Construct an MQTT blocking mode client
mqttClient =
new MqttClient(
this.mqttBrokerConnectionConfiguration.getBrokerUrl(), this.mqttClientId, dataStore);
// Set this wrapper as the callback handler
mqttClient.setCallback(this);
} catch (MqttException e) {
log.error("Exception occurred while subscribing to MQTT broker" + e);
throw new InputEventAdaptorEventProcessingException(e);
} catch (Throwable e) {
log.error("Exception occurred while subscribing to MQTT broker" + e);
throw new InputEventAdaptorEventProcessingException(e);
}
}
private void createClient() {
Log.d(TAG, "Creating client");
client = new MqttAndroidClient(context, serverURI, clientId);
client.setCallback(this);
client.setTraceCallback(this);
MqttConnectOptions options = new MqttConnectOptions();
options.setCleanSession(false);
try {
client.connect(options);
} catch (MqttException e) {
e.printStackTrace();
}
// MqttMessage message = new MqttMessage();
// message.setQos(qos);
// message.setPayload(new String("Bjorn").getBytes());
// client.publish("message);
}
/**
* Constructs an instance of the sample client wrapper
*
* @param brokerUrl the url to connect to
* @param clientId the client id to connect with
* @param cleanSession clear state at end of connection or not (durable or non-durable
* subscriptions)
* @param quietMode whether debug should be printed to standard out
* @param userName the username to connect with
* @param password the password for the user
* @throws MqttException
*/
public SampleAsyncWait(
String brokerUrl,
String clientId,
boolean cleanSession,
boolean quietMode,
String userName,
String password)
throws MqttException {
this.brokerUrl = brokerUrl;
this.quietMode = quietMode;
this.clean = cleanSession;
this.userName = userName;
this.password = password;
// This sample stores in a temporary directory... where messages temporarily
// stored until the message has been delivered to the server.
// ..a real application ought to store them somewhere
// where they are not likely to get deleted or tampered with
String tmpDir = System.getProperty("java.io.tmpdir");
MqttDefaultFilePersistence dataStore = new MqttDefaultFilePersistence(tmpDir);
try {
// Construct the connection options object that contains connection parameters
// such as cleanSession and LWT
conOpt = new MqttConnectOptions();
conOpt.setCleanSession(clean);
if (password != null) {
conOpt.setPassword(this.password.toCharArray());
}
if (userName != null) {
conOpt.setUserName(this.userName);
}
// Construct a non-blocking MQTT client instance
client = new MqttAsyncClient(this.brokerUrl, clientId, dataStore);
// Set this wrapper as the callback handler
client.setCallback(this);
} catch (MqttException e) {
e.printStackTrace();
log("Unable to set up client: " + e.toString());
System.exit(1);
}
}
public MQTTAdapterPublisher(
MQTTBrokerConnectionConfiguration mqttBrokerConnectionConfiguration,
String topic,
String mqttClientId) {
this.mqttBrokerConnectionConfiguration = mqttBrokerConnectionConfiguration;
this.mqttClientId = mqttClientId;
this.cleanSession = mqttBrokerConnectionConfiguration.isCleanSession();
this.keepAlive = mqttBrokerConnectionConfiguration.getKeepAlive();
this.topic = topic;
// SORTING messages until the server fetches them
String temp_directory =
System.getProperty(MQTTEventAdapterConstants.ADAPTER_TEMP_DIRECTORY_NAME);
MqttDefaultFilePersistence dataStore = new MqttDefaultFilePersistence(temp_directory);
try {
// Construct the connection options object that contains connection parameters
// such as cleanSession and LWT
connectionOptions = new MqttConnectOptions();
connectionOptions.setCleanSession(cleanSession);
connectionOptions.setKeepAliveInterval(keepAlive);
if (this.mqttBrokerConnectionConfiguration.getBrokerPassword() != null) {
connectionOptions.setPassword(
this.mqttBrokerConnectionConfiguration.getBrokerPassword().toCharArray());
}
if (this.mqttBrokerConnectionConfiguration.getBrokerUsername() != null) {
connectionOptions.setUserName(this.mqttBrokerConnectionConfiguration.getBrokerUsername());
}
// Construct an MQTT blocking mode client
mqttClient =
new MqttClient(
this.mqttBrokerConnectionConfiguration.getBrokerUrl(), this.mqttClientId, dataStore);
mqttClient.connect(connectionOptions);
} catch (MqttException e) {
log.error(
"Error occurred when constructing MQTT client for broker url : "
+ mqttBrokerConnectionConfiguration.getBrokerUrl());
handleException(e);
}
}
void connectAndSub() {
String methodName = Utility.getMethodName();
try {
mqttClient = clientFactory.createMqttClient(serverURI, ClientId);
mqttV3Receiver = new MqttV3Receiver(mqttClient, LoggingUtilities.getPrintStream());
mqttV3Receiver.setReportConnectionLoss(false);
mqttClient.setCallback(mqttV3Receiver);
MqttConnectOptions mqttConnectOptions = new MqttConnectOptions();
mqttConnectOptions.setCleanSession(false);
mqttConnectOptions.setWill("WillTopic", "payload".getBytes(), 2, true);
log.info("Connecting...(serverURI:" + serverURI + ", ClientId:" + ClientId);
mqttClient.connect(mqttConnectOptions);
log.info("Subscribing to..." + FirstSubTopicString);
mqttClient.subscribe(FirstSubTopicString, 2);
} catch (Exception exception) {
log.log(Level.SEVERE, "caugh exception:" + exception);
setState(FirstClientState.ERROR);
Assert.fail("Failed ConnectAndSub exception=" + exception);
}
}
public void initializeAndConnect(Context ctx, int qos, InitCallback callback) {
connectCallback = callback;
context = ctx;
qualityOfService = qos;
deviceId = "ad" + Secure.getString(ctx.getContentResolver(), Secure.ANDROID_ID);
opts = new MqttConnectOptions();
opts.setCleanSession(true);
User curUser = ClearBlade.getCurrentUser();
if (curUser.getAuthToken() == null) {
Log.i(DEBUG_TAG, "Auth token is null, cannot start messaging service");
return;
} else {
Log.i(DEBUG_TAG, "Received Authenticated user details");
opts.setUserName(curUser.getAuthToken());
opts.setPassword(Util.getSystemKey().toCharArray());
}
connect(ctx, callback);
}
public void doDemo() {
try {
client = new MqttClient("tcp://115.28.225.5:1883", "pahomqttpublish1");
client.connect();
MqttMessage message = new MqttMessage();
message.setPayload("A single message".getBytes());
client.publish("pahodemo", message);
client.disconnect();
MqttConnectOptions options = new MqttConnectOptions();
options.setCleanSession(true);
// client = new MqttClient("tcp://115.28.225.5:1883", "pahomqtt2");
// client.setCallback(new MqttCallback() {
//
// public void messageArrived(String topic, MqttMessage msg) throws Exception {
// System.out.println("get topic : " + topic + " , msg: " + msg);
// }
//
// public void deliveryComplete(IMqttDeliveryToken arg0) {
// // TODO Auto-generated method stub
//
// }
//
// public void connectionLost(Throwable arg0) {
// // TODO Auto-generated method stub
//
// }
// });
// client.connect(options);
// client.subscribe(new String[]{"pahodemo"});
// Thread.sleep(3000);
// client.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
private MqttConnectOptions getConnectOptions(
String userName,
String password,
Boolean clearSession,
Integer connectionTimeout,
String lwtTopic,
String lwtMessage,
Integer lwtQos,
Boolean lwtRetained) {
MqttConnectOptions connectOpts = new MqttConnectOptions();
if (!StringUtility.isNullOrEmpty(userName)) {
connectOpts.setUserName(userName);
if (!StringUtility.isNullOrEmpty(password)) {
connectOpts.setPassword(password.toCharArray());
}
}
if (clearSession != null) {
connectOpts.setCleanSession(clearSession);
}
if (connectionTimeout != null) {
connectOpts.setConnectionTimeout(connectionTimeout);
}
if (!StringUtility.isNullOrEmpty(lwtTopic) && !StringUtility.isNullOrEmpty(lwtMessage)) {
connectOpts.setWill(
lwtTopic,
lwtMessage.getBytes(),
NumberUtility.nvl(lwtQos, 1),
BooleanUtility.nvl(lwtRetained, false));
}
return connectOpts;
}
public boolean connect(Properties props) {
brokerUrl = props.getProperty("brokerurl", null);
if (brokerUrl == null) {
throw new RuntimeException("Could not find parameter brokerur");
}
Random rnd = new Random();
clientId =
props.getProperty(
"clientid",
System.getenv("mqtt.clientid") != null
? System.getenv("mqtt.clientid")
: "mqtt.loadgen." + rnd.nextInt(100000));
if (clientId == null || clientId.length() == 0) {
try {
clientId =
NetworkInterface.getNetworkInterfaces().hasMoreElements()
? NetworkInterface.getNetworkInterfaces()
.nextElement()
.getInetAddresses()
.nextElement()
.getHostName()
: "noop";
} catch (Exception ex) {
LOG.log(Level.SEVERE, "Could not retrieve hostname", ex);
}
}
// This sample stores in a temporary directory... where messages temporarily
// stored until the message has been delivered to the server.
// ..a real application ought to store them somewhere
// where they are not likely to get deleted or tampered with
File tmpDir = createTempDir();
MqttDefaultFilePersistence dataStore = new MqttDefaultFilePersistence(tmpDir.getAbsolutePath());
LOG.log(
Level.INFO, "Using directory {0} for temporary message storage", tmpDir.getAbsolutePath());
try {
// Construct the connection options object that contains connection parameters
// such as cleanSession and LWT
conOpt = new MqttConnectOptions();
conOpt.setCleanSession(Boolean.parseBoolean(props.getProperty("cleansession", "true")));
conOpt.setConnectionTimeout(Integer.parseInt(props.getProperty("connectiontimeout", "100")));
conOpt.setKeepAliveInterval(Integer.parseInt(props.getProperty("keepaliveinterval", "100")));
conOpt.setSocketFactory(
SslUtil.getSocketFactory(
props.getProperty("cafile"),
props.getProperty("cert"),
props.getProperty("privkey"),
props.getProperty("password", "dummy")));
// Construct an MQTT blocking mode client
client = new MqttClient(this.brokerUrl, clientId, dataStore);
// Wait max 10sec for a blocking call
client.setTimeToWait(10000);
// Set this wrapper as the callback handler
client.setCallback(this);
// Connect to the MQTT server
LOG.log(
Level.INFO,
"Connecting to {0} with client ID {1}",
new Object[] {brokerUrl, client.getClientId()});
client.connect(conOpt);
LOG.info("Connected");
connected = true;
return connected;
} catch (MqttException e) {
LOG.log(Level.WARNING, "Unable to set up client: " + e.toString(), e);
} catch (Exception ex) {
LOG.log(Level.SEVERE, "Could not create connection: " + ex.getLocalizedMessage(), ex);
}
return false;
}
/**
* Process data from the connect action
*
* @param data the {@link Bundle} returned by the {@link NewConnection} Acitivty
*/
private void connectAction(Bundle data) {
MqttConnectOptions conOpt = new MqttConnectOptions();
/*
* Mutal Auth connections could do something like this
*
*
* SSLContext context = SSLContext.getDefault();
* context.init({new CustomX509KeyManager()},null,null); //where CustomX509KeyManager proxies calls to keychain api
* SSLSocketFactory factory = context.getSSLSocketFactory();
*
* MqttConnectOptions options = new MqttConnectOptions();
* options.setSocketFactory(factory);
*
* client.connect(options);
*
*/
// public Properties getSSLSettings() {
// final Properties properties = new Properties();
// properties.setProperty("com.ibm.ssl.keyStore",
// "C:/BKSKeystore/mqttclientkeystore.keystore");
// properties.setProperty("com.ibm.ssl.keyStoreType", "BKS");
// properties.setProperty("com.ibm.ssl.keyStorePassword", "passphrase");
// properties.setProperty("com.ibm.ssl.trustStore",
// "C:/BKSKeystore/mqttclienttrust.keystore");
// properties.setProperty("com.ibm.ssl.trustStoreType", "BKS");
// properties.setProperty("com.ibm.ssl.trustStorePassword", "passphrase ");
//
// return properties;
// }
try {
SSLContext context;
KeyStore ts = KeyStore.getInstance("BKS");
ts.load(getResources().openRawResource(R.raw.test), "123456".toCharArray());
TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
tmf.init(ts);
TrustManager[] tm = tmf.getTrustManagers();
context = SSLContext.getInstance("TLS");
context.init(null, tm, null);
// SocketFactory factory= SSLSocketFactory.getDefault();
// Socket socket =factory.createSocket("localhost", 10000);
SocketFactory factory = context.getSocketFactory();
conOpt.setSocketFactory(factory);
} catch (Exception e) {
// TODO: handle exception
}
// The basic client information
String server = (String) data.get(ActivityConstants.server);
String clientId = (String) data.get(ActivityConstants.clientId);
int port = Integer.parseInt((String) data.get(ActivityConstants.port));
boolean cleanSession = (Boolean) data.get(ActivityConstants.cleanSession);
boolean ssl = (Boolean) data.get(ActivityConstants.ssl);
String uri = null;
if (ssl) {
Log.e("SSLConnection", "Doing an SSL Connect");
uri = "ssl://";
} else {
uri = "tcp://";
}
uri = uri + server + ":" + port;
MqttClientAndroidService client;
client = Connections.getInstance(this).createClient(this, uri, clientId);
// create a client handle
String clientHandle = uri + clientId;
// last will message
String message = (String) data.get(ActivityConstants.message);
String topic = (String) data.get(ActivityConstants.topic);
Integer qos = (Integer) data.get(ActivityConstants.qos);
Boolean retained = (Boolean) data.get(ActivityConstants.retained);
// connection options
String username = (String) data.get(ActivityConstants.username);
String password = (String) data.get(ActivityConstants.password);
int timeout = (Integer) data.get(ActivityConstants.timeout);
int keepalive = (Integer) data.get(ActivityConstants.keepalive);
Connection connection = new Connection(clientHandle, clientId, server, port, this, client, ssl);
arrayAdapter.add(connection);
connection.registerChangeListener(changeListener);
// connect client
String[] actionArgs = new String[1];
actionArgs[0] = clientId;
connection.changeConnectionStatus(ConnectionStatus.CONNECTING);
conOpt.setCleanSession(cleanSession);
conOpt.setConnectionTimeout(timeout);
conOpt.setKeepAliveInterval(keepalive);
if (!username.equals(ActivityConstants.empty)) {
conOpt.setUserName(username);
}
if (!password.equals(ActivityConstants.empty)) {
conOpt.setPassword(password.toCharArray());
}
final ActionListener callback =
new ActionListener(this, ActionListener.Action.CONNECT, clientHandle, actionArgs);
boolean doConnect = true;
if ((!message.equals(ActivityConstants.empty)) || (!topic.equals(ActivityConstants.empty))) {
// need to make a message since last will is set
try {
conOpt.setWill(topic, message.getBytes(), qos.intValue(), retained.booleanValue());
} catch (Exception e) {
doConnect = false;
callback.onFailure(null, e);
}
}
client.setCallback(new MqttCallbackHandler(this, clientHandle));
connection.addConnectionOptions(conOpt);
Connections.getInstance(this).addConnection(connection);
if (doConnect) {
try {
client.connect(conOpt, null, callback);
} catch (MqttException e) {
Log.e(this.getClass().getCanonicalName(), "MqttException Occured", e);
}
}
}
public MQTTAdapterListener(
MQTTBrokerConnectionConfiguration mqttBrokerConnectionConfiguration,
String topic,
String mqttClientId,
InputEventAdapterListener inputEventAdapterListener,
int tenantId) {
if (mqttClientId == null || mqttClientId.trim().isEmpty()) {
mqttClientId = MqttClient.generateClientId();
}
this.mqttBrokerConnectionConfiguration = mqttBrokerConnectionConfiguration;
this.cleanSession = mqttBrokerConnectionConfiguration.isCleanSession();
int keepAlive = mqttBrokerConnectionConfiguration.getKeepAlive();
this.topic = topic;
this.eventAdapterListener = inputEventAdapterListener;
this.tenantId = tenantId;
// SORTING messages until the server fetches them
String temp_directory = System.getProperty("java.io.tmpdir");
MqttDefaultFilePersistence dataStore = new MqttDefaultFilePersistence(temp_directory);
try {
connectionOptions = new MqttConnectOptions();
connectionOptions.setCleanSession(cleanSession);
connectionOptions.setKeepAliveInterval(keepAlive);
// Construct an MQTT blocking mode client
mqttClient =
new MqttClient(
this.mqttBrokerConnectionConfiguration.getBrokerUrl(), mqttClientId, dataStore);
// Set this wrapper as the callback handler
mqttClient.setCallback(this);
String contentValidatorClassName =
this.mqttBrokerConnectionConfiguration.getContentValidatorClassName();
if (contentValidatorClassName != null
&& contentValidatorClassName.equals(MQTTEventAdapterConstants.DEFAULT)) {
contentValidator = new DefaultContentValidator();
} else if (contentValidatorClassName != null && !contentValidatorClassName.isEmpty()) {
try {
Class<? extends ContentValidator> contentValidatorClass =
Class.forName(contentValidatorClassName).asSubclass(ContentValidator.class);
contentValidator = contentValidatorClass.newInstance();
} catch (ClassNotFoundException e) {
throw new MQTTContentInitializationException(
"Unable to find the class validator: " + contentValidatorClassName, e);
} catch (InstantiationException e) {
throw new MQTTContentInitializationException(
"Unable to create an instance of :" + contentValidatorClassName, e);
} catch (IllegalAccessException e) {
throw new MQTTContentInitializationException("Access of the instance in not allowed.", e);
}
}
String contentTransformerClassName =
this.mqttBrokerConnectionConfiguration.getContentTransformerClassName();
if (contentTransformerClassName != null
&& contentTransformerClassName.equals(MQTTEventAdapterConstants.DEFAULT)) {
contentTransformer = new DefaultContentTransformer();
} else if (contentTransformerClassName != null && !contentTransformerClassName.isEmpty()) {
try {
Class<? extends ContentTransformer> contentTransformerClass =
Class.forName(contentTransformerClassName).asSubclass(ContentTransformer.class);
contentTransformer = contentTransformerClass.newInstance();
} catch (ClassNotFoundException e) {
throw new MQTTContentInitializationException(
"Unable to find the class transfoer: " + contentTransformerClassName, e);
} catch (InstantiationException e) {
throw new MQTTContentInitializationException(
"Unable to create an instance of :" + contentTransformerClassName, e);
} catch (IllegalAccessException e) {
throw new MQTTContentInitializationException("Access of the instance in not allowed.", e);
}
}
} catch (MqttException e) {
log.error(
"Exception occurred while subscribing to MQTT broker at "
+ mqttBrokerConnectionConfiguration.getBrokerUrl());
throw new InputEventAdapterRuntimeException(e);
}
}
/**
* Test that a client actively doing work can be taken over
*
* @throws Exception
*/
@Test
public void testLiveTakeOver() throws Exception {
String methodName = Utility.getMethodName();
LoggingUtilities.banner(log, cclass, methodName);
log.entering(className, methodName);
IMqttClient mqttClient = null;
try {
FirstClient firstClient = new FirstClient();
Thread firstClientThread = new Thread(firstClient);
log.info("Starting the firstClient thread");
firstClientThread.start();
log.info("firstClientThread Started");
firstClient.waitForState(FirstClientState.READY);
log.fine("telling the 1st client to go and let it publish for 2 seconds");
// Tell the first client to go and let it publish for a couple of seconds
firstClient.setState(FirstClientState.RUNNING);
Thread.sleep(2000);
log.fine("Client has been run for 2 seconds, now taking over connection");
// Now lets take over the connection
// Create a second MQTT client connection with the same clientid. The
// server should spot this and kick the first client connection off.
// To do this from the same box the 2nd client needs to use either
// a different form of persistent store or a different locaiton for
// the store to the first client.
// MqttClientPersistence persist = new MemoryPersistence();
mqttClient = clientFactory.createMqttClient(serverURI, ClientId, null);
MqttV3Receiver mqttV3Receiver =
new MqttV3Receiver(mqttClient, LoggingUtilities.getPrintStream());
mqttClient.setCallback(mqttV3Receiver);
MqttConnectOptions mqttConnectOptions = new MqttConnectOptions();
mqttConnectOptions.setCleanSession(false);
mqttConnectOptions.setWill("WillTopic", "payload".getBytes(), 2, true);
log.info("Connecting...(serverURI:" + serverURI + ", ClientId:" + ClientId);
mqttClient.connect(mqttConnectOptions);
// We should have taken over the first Client's subscription...we may have some
// of his publishes arrive.
// NOTE: as a different persistence is used for the second client any inflight
// publications from the client will not be recovered / restarted. This will
// leave debris on the server.
log.fine(
"We should have taken over the first Client's subscription...we may have some of his publishes arrive.");
// Ignore his publishes that arrive...
ReceivedMessage oldMsg;
do {
oldMsg = mqttV3Receiver.receiveNext(1000);
} while (oldMsg != null);
log.fine("Now check we have grabbed his subscription by publishing..");
// Now check we have grabbed his subscription by publishing..
byte[] payload =
("Message payload from second client " + getClass().getName() + "." + methodName)
.getBytes();
MqttTopic mqttTopic = mqttClient.getTopic(FirstSubTopicString);
log.info("Publishing to..." + FirstSubTopicString);
mqttTopic.publish(payload, 1, false);
log.info("Publish sent, checking for receipt...");
boolean ok = mqttV3Receiver.validateReceipt(FirstSubTopicString, 1, payload);
if (!ok) {
throw new Exception("Receive failed");
}
} catch (Exception exception) {
log.throwing(className, methodName, exception);
throw exception;
} finally {
try {
mqttClient.disconnect();
log.info("Disconnecting...");
mqttClient.close();
log.info("Close...");
} catch (Exception exception) {
log.throwing(className, methodName, exception);
throw exception;
}
}
log.exiting(className, methodName);
}