@startuml

class "Base Loader" {
    {abstract} Loadable load(String name)
    {abstract} HashMap<String, Loadable> list_available()
}

class "Default Loader" {
    Loadable load(String name)
    HashMap<String, Loadable> list_available()
}

class Loadable {
  {abstract} {static} oslo_config.cfg.Opt[] get_config_opts()
}

class "Base Strategy" {
  {static} oslo_config.cfg.Opt[] get_config_opts()
  {abstract} {static} String get_name()
  {abstract} {static} String get_display_name()
  {abstract} {static} String get_translatable_display_name()
  {abstract} {static} String get_goal_name()
  {abstract} {static} String get_goal_display_name()
  {abstract} {static} String get_translatable_goal_display_name()
  {abstract} Solution execute()
}

class "Base Action" {
  {static} oslo_config.cfg.Opt[] get_config_opts()
  {abstract} execute()
  {abstract} revert()
  {abstract} precondition()
  {abstract} postcondition()
}

class "Base Planner" {
  {static} oslo_config.cfg.Opt[] get_config_opts()
  {abstract} ActionPlan schedule()
}

class "Base WorkflowFlow Engine" {
  {static} oslo_config.cfg.Opt[] get_config_opts()
  {abstract} execute()
}

"Base Loader" <|-- "Default Loader"
"Default Loader" ..> Loadable : " Loads"

"Loadable" <|-- "Base Strategy"
"Loadable" <|-- "Base Action"
"Loadable" <|-- "Base Planner"
"Loadable" <|-- "Base WorkflowFlow Engine"

@enduml