# Worker Node Process Diagrams

## Reaching Consensus

{% @mermaid/diagram content="sequenceDiagram
participant A as External event data
participant B as DDHub
participant G as Client GW (DDHub)
participant C as Worker Node 1
participant D as Worker Node ...n
Participant E as Voting Contract
Participant H as Event Listener Node
Participant F as Energy Web Chain
Note over G: Every x minutes
G->>A: Receives data and encrypts
G->>B: Pushes encrypted data
C->>B: Authenticates using DID
D->>B: Authenticates using DID
C->>B: Fetches encrypted input data
D->>B: Fetches encrypted input data
C->>C: Decrypts data using DID
D->>D: Decrypts data using DID
C->>C: Executes business logic & derives root hash
D->>D: Executes business logic & derives root hash
C->>E: Submits merkle tree root hash result
D->>E: Submits merkle tree root hash result
E->>E: Reaches consensus
E->>F: Notarize root hash on-chain
H->>F: Listens for Events
H->>B: Passes notarized root hash" %}

## Voting Manager

{% @mermaid/diagram content="sequenceDiagram
participant VotingManager
participant Worker
participant Overseer
participant VotingContract
participant Data Storage

VotingManager ->> VotingContract: add workers
loop Business Logic
Worker->>Data Storage: get input data
Data Storage-->>Worker:

Worker->>Worker: Logic Execution

Worker->>VotingContract: send vote
end

loop VotingResults
Overseer->>VotingContract: get Result events
VotingContract-->>Overseer:
Overseer->>Data Storage: save voting results
end" %}

## Caching Results

{% @mermaid/diagram content="sequenceDiagram
participant A as DDHub
participant G as Worker Node
Participant E as Cache
Participant D as Energy Web Chain
Participant F as Reporting Backend
E->>D: Listens for Events
D->>E: Passes notarized root hash
G->>G: Encrypts result data with root hash subject
G->>A: Sends encrypted result data
E->>A: Authenticates using DID/key
E->>A: Fetches encrypted result data
E->>E: Decrypts result data using DID
F->>E: Fetches decrypted result data" %}


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