use-case-sequence-diagram-fabric-quorum-asset-transfer.puml

@startuml Sequence Diagram - Fabric Quorum Asset Transfer

title Hyperledger Cactus\nSequence Diagram - Fabric Quorum Asset Transfer

actor User_A as a

box "Hyperledger Cactus" #LightGray
entity "API Server" as apis
entity "Validator" as v
end box

box "Ledgers"
entity Cactus_Contract_Fabric as c1
entity Cactus_Contract_Quorum as c2
database Fabric_Ledger as d1
database Quorum_Ledger as d2
end box

autoactivate on

== Authenticate ==

a -> apis: Authenticate
return Auth. Token

== Lock Fabric Asset ==

a -> apis: Lock Fabric Asset

  apis -> v: Lock Fabric Asset
    v -> c1: Invoke Contract: Lock Fabric Asset
      c1 -> d1: Write to Ledger State \n(Asset.locked=true)
      return Ledger Updated OK
    return Locked Fabric Asset
  return Locked Fabric Asset
return Locked Fabric Asset

autoactivate off
a -> a: Verify Signatures\nof Hyperledger Cactus Validators
opt Signatures Valid
  a -> a: <color green>Proceed with Execution</color>
else Signatures Invalid
  a -> a: <color red>Abort Process,\n<color red>possible MITM\n<color red>attack in progress
end
autoactivate on

== Create Quorum Asset ==

a -> apis: Create Quorum Asset

  apis -> v: Create Quorum Asset

    autoactivate off
    v -> v: Verify Signatures\nof Hyperledger Cactus Validators
    critical Signatures Valid
      v -> v: <color green>Continue
    else Signatures Invalid
      v -> v: <color red>Abort
    end
    autoactivate on

    v -> c2: Invoke Contract: Create Asset
      c2 -> d2: Write Asset to Ledger State
      return Ledger Updated OK
    return Quorum Asset, Metadata
  return Quorum Asset, Metadata
return Quorum Asset, Metadata

@enduml