j2se.MQTTFogServer

Class MQTTSubscriber

java.lang.Object

java.lang.Thread

j2se.MQTTFogServer.MQTTSubscriber

All Implemented Interfaces:

java.lang.Runnable

public class MQTTSubscriber
extends java.lang.Thread

This is a MQTTSubscriber thread. When you initial an instance of this class, you will receive the messages delivered to the broker with specific topic.

Author:

Yute Wang, yute@sccn.ucsd.edu

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
MQTTSubscriber(java.lang.String ipandport, java.lang.String name, java.lang.String topic, int qoslevel) A consctuctor for this class.

Method Summary

Methods

Modifier and Type	Method and Description
j2se.MQTTFogServer.CallBack	getCallback()
MatlabCallbackQueue	getQueue() Users can use this method to obtain the message queue, and extract the message from it.
java.lang.Double	getStaleTimeSec()
void	run() Core function for this class.
void	setSTOP() Stop this subscriber

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MQTTSubscriber

public MQTTSubscriber(java.lang.String ipandport,
              java.lang.String name,
              java.lang.String topic,
              int qoslevel)

A consctuctor for this class.

Parameters:

ipandport, - the IP and port you would like to connect to.

name, - a name for this client

topic, - a topic for MQTT message

qoslevel -

Method Detail

setSTOP

public void setSTOP()

Stop this subscriber

getQueue

public MatlabCallbackQueue getQueue()

Users can use this method to obtain the message queue, and extract the message from it.

Returns:

A queue that stores the MQTT messages

getStaleTimeSec

public java.lang.Double getStaleTimeSec()

Returns:

The time that last sample arrived

getCallback

public j2se.MQTTFogServer.CallBack getCallback()

Returns:

A instance of Callback.

run

public void run()

Core function for this class. When the instance perform the start() method, this function will be called.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread