@startuml
'https://plantuml.com/sequence-diagram

title Lifecycle of Scenarios

control "NBCLI" as nbcli
control "Scenario" as s
control "Scenario\nController" as sc
control "Scenarios\nExecutor" as se
control "Exception\nHandler" as seh
control "Thread\nFactory" as stf
control "Executor\nService" as ses

nbcli -> se** : create
 se -> seh** : create
 se -> stf** : create ThreadFactory\n(w/ ExceptionHandler)
 se -> ses** : create ExecutorService\n(w/ ThreadFactory)

nbcli -> s** : create
 s -> sc** : create
nbcli --> se : execute(Scenario)
se --> ses: submit(<Callable> Scenario)
activate ses
 ses -> future**: create
se <-- ses: <Future<ScenarioResult>>
deactivate ses

== [async] on thread from thread factory ==
ses -> stf: get()
 stf -> thread**: create
ses <- stf: <thread>
ses -> thread: run task
activate thread
thread -> s: call()
activate s
thread <- s: ScenarioResult
deactivate s
thread -> future: result
deactivate thread

== [async] on NBCLI thread ==

nbcli -> se: awaitAllResults();
activate se
 se -> ses: shutdown
 loop timeout
 se -> ses: awaitTermination(timeout)
 activate ses
 se <- ses
 deactivate ses
 end loop
 loop each future
 se -> future: get()
 activate future
 se <- future: ScenarioResult
 deactivate future
 end loop

nbcli <- se: <ScenariosResults>
deactivate se

@enduml