Distributed system example

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Java

By using the MQTT protocol implement in Java the Publisher - Subscriber parts of the
following application:
• Your application simulates a smart office environment, where sensors emit different
structural and air properties about the site.
In particular, you have one client (program) that publishes messages every second about
the room; like the floor/room/temperature (e.g 18 C) and the floor/room/humidity (e.g.
20%).
You also have another client (program) that publishes messages about the floor every
half second like; the floor/light/ID (e.g ON) and the floor/window/location (e.g.
OPEN/CLOSE).
Implement these 2 publishers and demonstrate the sending of messages on these topics
and subtopics. In your solution, for each client you can implement a loop that periodically
emits values/readings either randomly or from a list.

• You should also develop and run different subscribers (hint - copy and change the class
name and subscribe method in each case) that listens for messages on the following topics
and subtopics
• strictly messages related to a floor/room/temperature

• any messages that are related to room (including its subtopics)

• messages that are related to the floor for both light and window

• Finally, show and explain how you can facilitate disconnected clients?


Must include the screenshot of the code and output.

What I have tried:

i tried general google search for this problem but i didnt find any result for my problem.