Back-end File Structure

IoT Unit

• Responsible for sending and receiving data to/from HEM
• Also performs authentication and is responsible for encryption and decryption of data

Files

• cloud.js
• commandProcessor.js
• commandSender.js
• msgTable.js
• socketTable.js
• msgPacket.js

Chief Microgrid Operator (CMO)

• Creates one supervisor (microgrid.js) for each microgrid. Supervisor for a particular microgrid is created when the first HEM of that microgrid sends data.
• The CMO for now is microgrids.js

Files

• microgrids.js

Microgrid Supervisor

• Creates a message bus for a microgrid so that worker nodes can subscribe to it and get live data.
• When a job comes to the supervisor, it creates a worker node and asks it to run.
• For now, this is microgrid.js in mem/cloud/microgrid

Files

• microgrid.js

Status Monitor (SM)

• Maintains status of all HEMs for the REST services. Mainly for the web application

Files

• hemGlobalEvents.js
• hemStatusMonitor.js
• hemStatusObj.js

Exchanges and Queues

• We have two types of exchanges– fanout and topic
• Fanout distributes messages to all connected queues. It does dummy broadcasting
• Topic distributes messages selectively based on routing key

Backend Flow