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
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;
}
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);
}
}
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;
}
/**
* 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);
}
/**
* 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 void publish(String publishClientId, String publishTopic, byte[] payload)
throws DeviceControllerException {
if (mqttEnabled) {
MqttClient client;
MqttConnectOptions options;
if (publishClientId.length() > 24) {
String errorString =
"No of characters '"
+ publishClientId.length()
+ "' for ClientID: '"
+ publishClientId
+ "' is invalid (should be less than 24, hence please provide a "
+ "simple "
+ "'owner' tag)";
log.error(errorString);
throw new DeviceControllerException(errorString);
} else {
log.info(
"No of Characters "
+ publishClientId.length()
+ " for ClientID : '"
+ publishClientId
+ "' is acceptable");
}
try {
client = new MqttClient(mqttEndpoint, publishClientId);
options = new MqttConnectOptions();
options.setWill("device/clienterrors", "crashed".getBytes(UTF_8), 2, true);
client.setCallback(this);
client.connect(options);
client.publish(publishTopic, payload, 0, true);
if (log.isDebugEnabled()) {
log.debug(
"MQTT Client successfully published to topic: "
+ publishTopic
+ ", with payload - "
+ payload);
}
client.disconnect();
} catch (MqttException ex) {
String errorMsg =
"MQTT Client Error"
+ "\n\tReason: "
+ ex.getReasonCode()
+ "\n\tMessage: "
+ ex.getMessage()
+ "\n\tLocalMsg: "
+ ex.getLocalizedMessage()
+ "\n\tCause: "
+ ex.getCause()
+ "\n\tException: "
+ ex;
log.error(errorMsg, ex);
throw new DeviceControllerException(errorMsg, ex);
}
} else {
log.warn("MQTT <Enabled> set to false in 'device-mgt-config.xml'");
}
}
