PlantUML Web Server

@startuml

!pragma teoz true
<style>
 .eventNote {
     BackgroundColor #cfecf7
     FontSize 11
     RoundCorner 10
 }
</style>
skinparam wrapWidth 800
!function $color($value)
!return "<color:"+$value+" >"
!endfunction
autonumber 1

actor "Caller" as caller
entity "Dessert Provider" as dessertProvider
entity "Cow Service" as cowService
entity "Event broker" as eventBroker

caller -> dessertProvider: GET: /milk
dessertProvider -> cowService: GET: /milk
cowService --> dessertProvider: OK
note right
$color(gray)[Date=Mon, 23 Mar 2026 16:40:01 GMT]
$color(gray)[Server=Kestrel]
$color(gray)[Transfer-Encoding=chunked]

{
  "milk": "Some_Fresh_Milk"
}
end note
dessertProvider --> caller: OK
note right
{
  "milk": "Some_Fresh_Milk"
}
end note
caller -> dessertProvider: GET: /eggs
dessertProvider --> caller: OK
note right
{
  "eggs": "Some_Eggs"
}
end note
caller -> dessertProvider: GET: /flour
dessertProvider --> caller: OK
note right
{
  "flour": "Some_Flour"
}
end note
caller -> dessertProvider: POST: /cake
note left
{
  "milk": "Some_Fresh_Milk",
  "flour": "Some_Flour",
  "eggs": "Some_Eggs"
}
end note
dessertProvider -> eventBroker: Send (Event Protocol): /cake_events
note<<eventNote>> left
{
  "BatchId": "ab3aab97-17cc-42d2-af7a-fdb8a2a9fc04",
  "Ingredients": [
    "Some_Eggs",
    "Some_Fresh_Milk",
    "Some_Flour"
  ]
}
end note
eventBroker --> dessertProvider: Responded
dessertProvider --> caller: OK
note right
{
  "batchId": "ab3aab97-17cc-42d2-af7a-fdb8a2a9fc04",
  "ingredients": [
    "Some_Eggs",
    "Some_Fresh_Milk",
    "Some_Flour"
  ]
}
end note
@enduml

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