Shabir Mohamed
9 years ago
parent
33edc31644
commit
c13e5ac620
@ -0,0 +1,81 @@
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package org.wso2.carbon.device.mgt.iot.sample.virtual.firealarm.service.impl.util;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.eclipse.paho.client.mqttv3.MqttMessage;
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import org.wso2.carbon.device.mgt.common.DeviceManagementException;
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import org.wso2.carbon.device.mgt.iot.common.controlqueue.mqtt.MqttConfig;
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import org.wso2.carbon.device.mgt.iot.common.controlqueue.mqtt.MqttSubscriber;
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import org.wso2.carbon.device.mgt.iot.sample.virtual.firealarm.plugin.constants
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.VirtualFireAlarmConstants;
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import java.io.File;
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import java.util.UUID;
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public class VirtualFireAlarmMqttSubscriber extends MqttSubscriber {
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private static Log log = LogFactory.getLog(VirtualFireAlarmMqttSubscriber.class);
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private static final String subscribeTopic =
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"wso2" + File.separator + "iot" + File.separator + "+" + File.separator +
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VirtualFireAlarmConstants.DEVICE_TYPE + File.separator + "+" + File.separator +
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"reply";
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private static final String iotServerSubscriber = UUID.randomUUID().toString().substring(0, 5);
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private static String mqttEndpoint;
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private VirtualFireAlarmMqttSubscriber() {
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super(iotServerSubscriber, VirtualFireAlarmConstants.DEVICE_TYPE,
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MqttConfig.getInstance().getMqttQueueEndpoint(), subscribeTopic);
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}
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public void initConnector() {
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mqttEndpoint = MqttConfig.getInstance().getMqttQueueEndpoint();
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}
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public void connectAndSubscribe() {
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try {
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super.connectAndSubscribe();
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} catch (DeviceManagementException e) {
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log.error("Subscription to MQTT Broker at: " + mqttEndpoint + " failed");
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retryMQTTSubscription();
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}
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}
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@Override
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protected void postMessageArrived(String topic, MqttMessage message) {
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log.info("Message " + message.toString() + " was received for topic: " + topic);
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}
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private void retryMQTTSubscription() {
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Thread retryToSubscribe = new Thread() {
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@Override
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public void run() {
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while (true) {
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if (!isConnected()) {
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if (log.isDebugEnabled()) {
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log.debug("Subscriber re-trying to reach MQTT queue....");
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}
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try {
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VirtualFireAlarmMqttSubscriber.super.connectAndSubscribe();
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} catch (DeviceManagementException e1) {
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if (log.isDebugEnabled()) {
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log.debug("Attempt to re-connect to MQTT-Queue failed");
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}
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}
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} else {
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break;
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}
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try {
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Thread.sleep(5000);
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} catch (InterruptedException e1) {
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log.error("MQTT: Thread S;eep Interrupt Exception");
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}
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}
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}
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};
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retryToSubscribe.setDaemon(true);
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retryToSubscribe.start();
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}
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}
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@ -0,0 +1,88 @@
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package org.wso2.carbon.device.mgt.iot.sample.virtual.firealarm.service.impl.util;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.jivesoftware.smack.packet.Message;
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import org.wso2.carbon.device.mgt.common.DeviceManagementException;
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import org.wso2.carbon.device.mgt.iot.common.controlqueue.xmpp.XmppConfig;
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import org.wso2.carbon.device.mgt.iot.common.controlqueue.xmpp.XmppConnector;
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public class VirtualFireAlarmXmppConnector extends XmppConnector {
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private static Log log = LogFactory.getLog(VirtualFireAlarmXmppConnector.class);
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private static String xmppServerIP;
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// private static int xmppServerPort;
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private static String xmppAdminUsername;
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private static String xmppAdminPassword;
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private static String xmppAdminAccountJID;
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private VirtualFireAlarmXmppConnector() {
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super(XmppConfig.getInstance().getXmppServerIP(),
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XmppConfig.getInstance().getSERVER_CONNECTION_PORT());
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}
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public void initConnector() {
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xmppServerIP = XmppConfig.getInstance().getXmppServerIP();
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xmppAdminUsername = XmppConfig.getInstance().getXmppUsername();
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xmppAdminPassword = XmppConfig.getInstance().getXmppPassword();
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xmppAdminAccountJID = xmppAdminUsername + "@" + xmppServerIP;
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}
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public void connectAndLogin() {
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try {
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super.connectAndLogin(xmppAdminUsername, xmppAdminPassword, null);
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super.setMessageFilterOnReceiver(xmppAdminAccountJID);
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} catch (DeviceManagementException e) {
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log.error("Connect/Login attempt to XMPP Server at: " + xmppServerIP + " failed");
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retryXMPPConnection();
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}
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}
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@Override
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protected void processXMPPMessage(Message xmppMessage) {
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String from = xmppMessage.getFrom();
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String message = xmppMessage.getBody();
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log.info("Received XMPP message '" + message + "' from " + from);
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}
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private void retryXMPPConnection() {
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Thread retryToConnect = new Thread() {
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@Override
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public void run() {
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while (true) {
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if (!isConnected()) {
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if (log.isDebugEnabled()) {
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log.debug("Re-trying to reach XMPP Server....");
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}
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try {
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VirtualFireAlarmXmppConnector.super.connectAndLogin(xmppAdminUsername,
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xmppAdminPassword,
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null);
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VirtualFireAlarmXmppConnector.super.setMessageFilterOnReceiver(
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xmppAdminAccountJID);
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} catch (DeviceManagementException e1) {
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if (log.isDebugEnabled()) {
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log.debug("Attempt to re-connect to XMPP-Server failed");
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}
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}
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} else {
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break;
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}
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try {
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Thread.sleep(5000);
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} catch (InterruptedException e1) {
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log.error("XMPP: Thread Sleep Interrupt Exception");
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}
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}
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}
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};
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retryToConnect.setDaemon(true);
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retryToConnect.start();
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}
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}
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@ -1,280 +0,0 @@
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/*
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* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.carbon.device.mgt.iot.sample.virtual.firealarm.service.impl.util.mqtt;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
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import org.eclipse.paho.client.mqttv3.MqttCallback;
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import org.eclipse.paho.client.mqttv3.MqttClient;
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import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
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import org.eclipse.paho.client.mqttv3.MqttException;
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import org.eclipse.paho.client.mqttv3.MqttMessage;
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import org.eclipse.paho.client.mqttv3.MqttSecurityException;
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import org.wso2.carbon.device.mgt.common.DeviceManagementException;
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import java.io.File;
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import java.nio.charset.StandardCharsets;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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/**
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* This class contains the Agent specific implementation for all the MQTT functionality. This
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* includes connecting to a MQTT Broker & subscribing to the appropriate MQTT-topic, action plan
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* upon losing connection or successfully delivering a message to the broker and processing
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* incoming messages. Makes use of the 'Paho-MQTT' library provided by Eclipse Org.
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* <p/>
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* It is an abstract class with an abstract method 'postMessageArrived' allowing the user to have
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* their own implementation of the actions to be taken upon receiving a message to the subscribed
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* MQTT-Topic.
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*/
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public abstract class MQTTClient implements MqttCallback {
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private static final Log log = LogFactory.getLog(MQTTClient.class);
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private MqttClient client;
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private String clientId;
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private MqttConnectOptions options;
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private String subscribeTopic;
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private String clientWillTopic;
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private String mqttBrokerEndPoint;
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private int reConnectionInterval;
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/**
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* Constructor for the MQTTClient which takes in the owner, type of the device and the MQTT
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* Broker URL and the topic to subscribe.
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*
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* @param deviceOwner the owner of the device.
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* @param deviceType the CDMF Device-Type of the device.
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* @param mqttBrokerEndPoint the IP/URL of the MQTT broker endpoint.
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* @param subscribeTopic the MQTT topic to which the client is to be subscribed
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*/
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protected MQTTClient(String deviceOwner, String deviceType, String mqttBrokerEndPoint,
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String subscribeTopic) {
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this.clientId = deviceOwner + ":" + deviceType;
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this.subscribeTopic = subscribeTopic;
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this.clientWillTopic = deviceType + File.separator + "disconnection";
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this.mqttBrokerEndPoint = mqttBrokerEndPoint;
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this.reConnectionInterval = 5000;
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this.initSubscriber();
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}
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/**
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* Constructor for the MQTTClient which takes in the owner, type of the device and the MQTT
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* Broker URL and the topic to subscribe. Additionally this constructor takes in the
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* reconnection-time interval between successive attempts to connect to the broker.
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*
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* @param deviceOwner the owner of the device.
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* @param deviceType the CDMF Device-Type of the device.
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* @param mqttBrokerEndPoint the IP/URL of the MQTT broker endpoint.
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* @param subscribeTopic the MQTT topic to which the client is to be subscribed
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* @param reConnectionInterval time interval in SECONDS between successive attempts to connect
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* to the broker.
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*/
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protected MQTTClient(String deviceOwner, String deviceType, String mqttBrokerEndPoint,
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String subscribeTopic, int reConnectionInterval) {
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this.clientId = deviceOwner + ":" + deviceType;
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this.subscribeTopic = subscribeTopic;
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this.clientWillTopic = deviceType + File.separator + "disconnection";
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this.mqttBrokerEndPoint = mqttBrokerEndPoint;
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this.reConnectionInterval = reConnectionInterval;
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this.initSubscriber();
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}
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/**
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* Initializes the MQTT-Client.
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* Creates a client using the given MQTT-broker endpoint and the clientId (which is
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* constructed by a concatenation of [deviceOwner]:[deviceType]). Also sets the client's
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* options parameter with the clientWillTopic (in-case of connection failure) and other info.
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* Also sets the call-back this current class.
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*/
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private void initSubscriber() {
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try {
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client = new MqttClient(this.mqttBrokerEndPoint, clientId, null);
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log.info("MQTT subscriber was created with ClientID : " + clientId);
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} catch (MqttException ex) {
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String errorMsg = "MQTT Client Error\n" + "\tReason: " + ex.getReasonCode() +
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"\n\tMessage: " + ex.getMessage() + "\n\tLocalMsg: " +
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ex.getLocalizedMessage() + "\n\tCause: " + ex.getCause() +
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"\n\tException: " + ex;
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log.error(errorMsg);
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}
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options = new MqttConnectOptions();
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options.setCleanSession(false);
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options.setWill(clientWillTopic, "connection crashed".getBytes(StandardCharsets.UTF_8), 2,
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true);
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client.setCallback(this);
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}
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/**
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* Checks whether the connection to the MQTT-Broker persists.
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*
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* @return true if the client is connected to the MQTT-Broker, else false.
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*/
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public boolean isConnected() {
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return client.isConnected();
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}
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/**
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* Connects to the MQTT-Broker and if successfully established connection, then tries to
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* subscribe to the MQTT-Topic specific to the device. (The MQTT-Topic specific to the
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* device is created is taken in as a constructor parameter of this class) .
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*
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* @throws DeviceManagementException in the event of 'Connecting to' or 'Subscribing to' the
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* MQTT broker fails.
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*/
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public void connectAndSubscribe() throws DeviceManagementException {
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try {
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client.connect(options);
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if (log.isDebugEnabled()) {
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log.debug("Subscriber connected to queue at: " + this.mqttBrokerEndPoint);
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}
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} catch (MqttSecurityException ex) {
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String errorMsg = "MQTT Security Exception when connecting to queue\n" + "\tReason: " +
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" " +
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ex.getReasonCode() + "\n\tMessage: " + ex.getMessage() +
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"\n\tLocalMsg: " + ex.getLocalizedMessage() + "\n\tCause: " +
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ex.getCause() + "\n\tException: " + ex; //throw
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if (log.isDebugEnabled()) {
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log.debug(errorMsg);
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}
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throw new DeviceManagementException(errorMsg, ex);
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} catch (MqttException ex) {
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String errorMsg = "MQTT Exception when connecting to queue\n" + "\tReason: " +
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ex.getReasonCode() + "\n\tMessage: " + ex.getMessage() +
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"\n\tLocalMsg: " + ex.getLocalizedMessage() + "\n\tCause: " +
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ex.getCause() + "\n\tException: " + ex; //throw
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if (log.isDebugEnabled()) {
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log.debug(errorMsg);
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}
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throw new DeviceManagementException(errorMsg, ex);
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}
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try {
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client.subscribe(subscribeTopic, 0);
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log.info("Subscriber - " + clientId + " subscribed to topic: " + subscribeTopic);
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} catch (MqttException ex) {
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String errorMsg = "MQTT Exception when trying to subscribe to topic: " +
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subscribeTopic + "\n\tReason: " + ex.getReasonCode() +
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"\n\tMessage: " + ex.getMessage() + "\n\tLocalMsg: " +
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ex.getLocalizedMessage() + "\n\tCause: " + ex.getCause() +
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"\n\tException: " + ex;
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if (log.isDebugEnabled()) {
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log.debug(errorMsg);
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}
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throw new DeviceManagementException(errorMsg, ex);
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}
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}
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/**
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* Callback method which is triggered once the MQTT client losers its connection to the broker.
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* A scheduler thread is spawned to continuously re-attempt and connect to the broker and
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* subscribe to the device's topic. This thread is scheduled to execute after every break
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* equal to that of the 'reConnectionInterval' of the MQTTClient.
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*
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* @param throwable a Throwable Object containing the details as to why the failure occurred.
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*/
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public void connectionLost(Throwable throwable) {
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log.warn("Lost Connection for client: " + this.clientId + " to " + this.mqttBrokerEndPoint + ".\nThis was due to - " + throwable.getMessage());
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Runnable reSubscriber = new Runnable() {
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@Override
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public void run() {
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if (!isConnected()) {
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if (log.isDebugEnabled()) {
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log.debug("Subscriber reconnecting to queue........");
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}
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try {
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connectAndSubscribe();
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} catch (DeviceManagementException e) {
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if (log.isDebugEnabled()) {
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log.debug("Could not reconnect and subscribe to ControlQueue.");
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}
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}
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} else {
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return;
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}
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}
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};
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ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
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service.scheduleAtFixedRate(reSubscriber, 0, this.reConnectionInterval, TimeUnit.SECONDS);
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}
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/**
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* Callback method which is triggered upon receiving a MQTT Message from the broker. Spawns a
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* new thread that executes any actions to be taken with the received message.
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*
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* @param topic the MQTT-Topic to which the received message was published to and the
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* client was subscribed to.
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* @param mqttMessage the actual MQTT-Message that was received from the broker.
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*/
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public void messageArrived(final String topic, final MqttMessage mqttMessage) {
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Thread subscriberThread = new Thread() {
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public void run() {
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postMessageArrived(topic, mqttMessage);
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}
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};
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subscriberThread.start();
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}
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/**
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* Callback method which gets triggered upon successful completion of a message delivery to
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* the broker.
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*
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* @param iMqttDeliveryToken the MQTT-DeliveryToken which includes the details about the
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* specific message delivery.
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*/
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public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
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String message = "";
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try {
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message = iMqttDeliveryToken.getMessage().toString();
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} catch (MqttException e) {
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log.error("Error occurred whilst trying to read the message from the MQTT delivery token.");
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}
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String topic = iMqttDeliveryToken.getTopics()[0];
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String client = iMqttDeliveryToken.getClient().getClientId();
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log.info("Message - '" + message + "' of client [" + client + "] for the topic (" + topic + ") was delivered successfully.");
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}
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/**
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* This is an abstract method used for post processing the received MQTT-message. This
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* method will be implemented as per requirement at the time of creating an object of this
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* class.
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*
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* @param topic The topic for which the message was received for.
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* @param message The message received for the subscription to the above topic.
|
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*/
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protected abstract void postMessageArrived(String topic, MqttMessage message);
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/**
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* Gets the MQTTClient object.
|
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*
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* @return the MQTTClient object.
|
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*/
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public MqttClient getClient() {
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return client;
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}
|
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||||
}
|
||||
|
||||
@ -1,241 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
|
||||
*
|
||||
* WSO2 Inc. licenses this file to you under the Apache License,
|
||||
* Version 2.0 (the "License"); you may not use this file except
|
||||
* in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing,
|
||||
* software distributed under the License is distributed on an
|
||||
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
||||
* KIND, either express or implied. See the License for the
|
||||
* specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
|
||||
package org.wso2.carbon.device.mgt.iot.sample.virtual.firealarm.service.impl.util.xmpp;
|
||||
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.jivesoftware.smack.ConnectionConfiguration;
|
||||
import org.jivesoftware.smack.PacketListener;
|
||||
import org.jivesoftware.smack.SmackConfiguration;
|
||||
import org.jivesoftware.smack.XMPPConnection;
|
||||
import org.jivesoftware.smack.XMPPException;
|
||||
import org.jivesoftware.smack.filter.AndFilter;
|
||||
import org.jivesoftware.smack.filter.FromContainsFilter;
|
||||
import org.jivesoftware.smack.filter.PacketFilter;
|
||||
import org.jivesoftware.smack.filter.PacketTypeFilter;
|
||||
import org.jivesoftware.smack.packet.Message;
|
||||
import org.jivesoftware.smack.packet.Packet;
|
||||
import org.wso2.carbon.device.mgt.common.DeviceManagementException;
|
||||
|
||||
/**
|
||||
* This class contains the Agent specific implementation for all the XMPP functionality. This
|
||||
* includes connecting to a XMPP Server & Login using the device's XMPP-Account, Setting
|
||||
* listeners and filters on incoming XMPP messages and Sending XMPP replies for control signals
|
||||
* received. Makes use of the 'Smack-XMPP' library provided by jivesoftware/igniterealtime.
|
||||
* <p/>
|
||||
* It is an abstract class with an abstract method 'processXMPPMessage' allowing the user to have
|
||||
* their own implementation of the actions to be taken upon receiving an appropriate XMPP message.
|
||||
*/
|
||||
public abstract class XMPPClient {
|
||||
private static final Log log = LogFactory.getLog(XMPPClient.class);
|
||||
|
||||
private int replyTimeoutInterval = 500; // millis
|
||||
private String server;
|
||||
private int port;
|
||||
private ConnectionConfiguration config;
|
||||
private XMPPConnection connection;
|
||||
private PacketFilter filter;
|
||||
private PacketListener listener;
|
||||
|
||||
/**
|
||||
* Constructor for XMPPClient passing server-IP and the XMPP-port.
|
||||
*
|
||||
* @param server the IP of the XMPP server.
|
||||
* @param port the XMPP server's port to connect to. (default - 5222)
|
||||
*/
|
||||
public XMPPClient(String server, int port) {
|
||||
this.server = server;
|
||||
this.port = port;
|
||||
initXMPPClient();
|
||||
}
|
||||
|
||||
/**
|
||||
* Initializes the XMPP Client.
|
||||
* Sets the time-out-limit whilst waiting for XMPP-replies from server. Creates the XMPP
|
||||
* configurations to connect to the server and creates the XMPPConnection object used for
|
||||
* connecting and Logging-In.
|
||||
*/
|
||||
private void initXMPPClient() {
|
||||
log.info(String.format(
|
||||
"Initializing connection to XMPP Server at %1$s via port %2$d......", server,
|
||||
port));
|
||||
SmackConfiguration.setPacketReplyTimeout(replyTimeoutInterval);
|
||||
config = new ConnectionConfiguration(server, port);
|
||||
// TODO:: Need to enable SASL-Authentication appropriately
|
||||
config.setSASLAuthenticationEnabled(false);
|
||||
config.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
|
||||
connection = new XMPPConnection(config);
|
||||
}
|
||||
|
||||
/**
|
||||
* Connects to the XMPP-Server and if successfully established connection, then tries to Log
|
||||
* in using the device's XMPP Account credentials. (The XMPP-Account specific to the device is
|
||||
* created in the XMPP server whilst downloading the Agent from the IoT Server) .
|
||||
*
|
||||
* @param username the username of the device's XMPP-Account.
|
||||
* @param password the password of the device's XMPP-Account.
|
||||
* @param resource the resource the resource, specific to the XMPP-Account to which the login
|
||||
* is made to
|
||||
* @throws DeviceManagementException in the event of 'Connecting to' or 'Logging into' the
|
||||
* XMPP server fails.
|
||||
*/
|
||||
public void connectAndLogin(String username, String password, String resource)
|
||||
throws DeviceManagementException {
|
||||
try {
|
||||
connection.connect();
|
||||
log.info(String.format(
|
||||
"Connection to XMPP Server at %1$s established successfully......", server));
|
||||
|
||||
} catch (XMPPException xmppExcepion) {
|
||||
String errorMsg =
|
||||
"Connection attempt to the XMPP Server at " + server + " via port " + port +
|
||||
" failed.";
|
||||
log.info(errorMsg);
|
||||
throw new DeviceManagementException(errorMsg, xmppExcepion);
|
||||
}
|
||||
|
||||
if (connection.isConnected()) {
|
||||
try {
|
||||
if (resource == null) {
|
||||
connection.login(username, password);
|
||||
log.info(String.format("Logged into XMPP Server at %1$s as user %2$s......", server, username));
|
||||
} else {
|
||||
connection.login(username, password, resource);
|
||||
log.info(String.format(
|
||||
"Logged into XMPP Server at %1$s as user %2$s on resource %3$s......",
|
||||
server, username, resource));
|
||||
}
|
||||
} catch (XMPPException xmppException) {
|
||||
String errorMsg =
|
||||
"Login attempt to the XMPP Server at " + server + " with username - " +
|
||||
username + " failed.";
|
||||
log.info(errorMsg);
|
||||
throw new DeviceManagementException(errorMsg, xmppException);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets a filter on all the incoming XMPP-Messages for the JID (XMPP-Account ID) passed in.
|
||||
* Also creates a listener for the incoming messages and connects the listener to the
|
||||
* XMPPConnection alongside the set filter.
|
||||
*
|
||||
* @param senderJID the JID (XMPP-Account ID) to which the filter is to be set.
|
||||
*/
|
||||
public void setMessageFilterAndListener(String senderJID) {
|
||||
filter = new AndFilter(new PacketTypeFilter(Message.class), new
|
||||
FromContainsFilter(
|
||||
senderJID));
|
||||
listener = new PacketListener() {
|
||||
@Override
|
||||
public void processPacket(Packet packet) {
|
||||
if (packet instanceof Message) {
|
||||
final Message xmppMessage = (Message) packet;
|
||||
Thread msgProcessThread = new Thread() {
|
||||
public void run() {
|
||||
processXMPPMessage(xmppMessage);
|
||||
}
|
||||
};
|
||||
msgProcessThread.start();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
connection.addPacketListener(listener, filter);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Sends an XMPP message
|
||||
*
|
||||
* @param JID the JID (XMPP Account ID) to which the message is to be sent to.
|
||||
* @param message the XMPP-Message that is to be sent.
|
||||
*/
|
||||
public void sendXMPPMessage(String JID, String message) {
|
||||
sendXMPPMessage(JID, message, "Reply-From-Device");
|
||||
if (log.isDebugEnabled()) {
|
||||
log.debug("Message: " + message + " to XMPP JID [" + JID + "] sent successfully");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Overloaded method to send an XMPP message. Includes the subject to be mentioned in the
|
||||
* message that is sent.
|
||||
*
|
||||
* @param JID the JID (XMPP Account ID) to which the message is to be sent to.
|
||||
* @param message the XMPP-Message that is to be sent.
|
||||
* @param subject the subject that the XMPP-Message would carry.
|
||||
*/
|
||||
public void sendXMPPMessage(String JID, String message, String subject) {
|
||||
Message xmppMessage = new Message();
|
||||
xmppMessage.setTo(JID);
|
||||
xmppMessage.setSubject(subject);
|
||||
xmppMessage.setBody(message);
|
||||
xmppMessage.setType(Message.Type.chat);
|
||||
connection.sendPacket(xmppMessage);
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks whether the connection to the XMPP-Server persists.
|
||||
*
|
||||
* @return true if the client is connected to the XMPP-Server, else false.
|
||||
*/
|
||||
public boolean isConnected() {
|
||||
return connection.isConnected();
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the client's time-out-limit whilst waiting for XMPP-replies from server.
|
||||
*
|
||||
* @param millis the time in millis to be set as the time-out-limit whilst waiting for a
|
||||
* XMPP-reply.
|
||||
*/
|
||||
public void setReplyTimeoutInterval(int millis) {
|
||||
this.replyTimeoutInterval = millis;
|
||||
}
|
||||
|
||||
/**
|
||||
* Disables default debugger provided by the XMPPConnection.
|
||||
*/
|
||||
public void disableDebugger() {
|
||||
connection.DEBUG_ENABLED = false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Closes the connection to the XMPP Server.
|
||||
*/
|
||||
public void closeConnection() {
|
||||
if (connection != null && connection.isConnected()) {
|
||||
connection.disconnect();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* This is an abstract method used for post processing the received XMPP-message. This
|
||||
* method will be implemented as per requirement at the time of creating an object of this
|
||||
* class.
|
||||
*
|
||||
* @param xmppMessage the xmpp message received by the listener.
|
||||
*/
|
||||
protected abstract void processXMPPMessage(Message xmppMessage);
|
||||
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in new issue