sequence-simple.puml

@startuml

title Simple Sequence Diagram

participant MyLogger
participant CompositeObserver
participant ConditionalObserver
participant file
participant console
participant ConsoleObserver
participant FileObserver


[-> MyLogger: error("Something went wrong")
activate MyLogger
  MyLogger -> MyLogger: create LogEvent
  MyLogger -> CompositeObserver ++: logEvent(event)

  loop observer in observers
    CompositeObserver -> ConditionalObserver ++: logEvent(event)
    alt event.level >= threshold
        ConditionalObserver -> console ++: logEvent(event)
        console -> console: text := formatEvent(event)
        console -> ConsoleObserver ++: writeLine(text)
        console <-- ConsoleObserver --
        ConditionalObserver <-- console --
    end
    CompositeObserver <-- ConditionalObserver --
  
    CompositeObserver -> file ++: logEvent(event)
      file -> file: text := formatEvent(event)
      file -> FileObserver ++: writeLine(text)
      file <-- FileObserver --
    CompositeObserver <-- file --
  end loop


  MyLogger <-- CompositeObserver --
deactivate MyLogger



@enduml