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);
}
}
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);
}
}
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);
}
}