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@startuml

autonumber

participant  ApplicationManager
participant RialtoServerManager

ApplicationManager             ->  RialtoServerManager:               create(state_observer, config)
note right: config allows app manager to specify number of preloaded servers, path to RialtoApplicationSessionServer binary, startup timer and heathcheck interval
RialtoServerManager -> RialtoServerManager: Read Rialto-Config json file and load config.
RialtoServerManager -> RialtoServerManager: Read Rialto-Config json overrides file and override config.
loop For num of preloaded server 
ref over RialtoServerManager, RialtoApplicationSessionServer : [[#RialtoApplicationSessionManagement-NotRunning→Unitialized(serverpreloading) Not Running→Unitialized (server preloading)]] 
end
 RialtoServerManager            --> ApplicationManager:       
@enduml

@startuml
autonumber
participant ApplicationManager
participant RialtoApplicationSessionServer
ref over ApplicationManager, RialtoApplicationSessionServer : [[#RialtoApplicationSessionManagement-NotRunning→Inactive Not Running to Inactive]]
ApplicationManager             ->  Application ** :                Spawn(AppState::Inactive, listening_socket_name)
Application                    ->  RialtoClient ** :               Load RialtoClient library
RialtoClientApplication                    ->  RialtoClient RialtoApplicationSessionServer: Connect(rialto_listening_socket)
note right
Connect is not an API call, it is establishing IPC channel with server
end note           registerClient()
RialtoClient                   ->  RialtoApplicationSessionServer: Connect(rialto_listening_socket)
note right
Connect is not an API call, it is establishing IPC channel with server
end note
opt first registerClient call
    RialtoClient               -> RialtoApplicationSessionServer:  registerClient()
    RialtoApplicationSessionServer --> RialtoClient:               status, AppState::Inactive
end
RialtoClient                   --> Application:                    status, AppState::Inactive
Application                    -// ApplicationManager:             stateChanged(AppState::Inactive)
@enduml

@startuml

autonumber

participant ApplicationManager
participant RialtoApplicationSessionServer

ref over ApplicationManager, RialtoApplicationSessionServer : [[#RialtoApplicationSessionManagement-NotRunning→Active Not Running to Active]]

ApplicationManager             ->  Application ** :                Spawn(AppState::Running, listening_socket_name)
Application                    ->  RialtoClient ** :               load RialtoClient library library
Application                    ->  RialtoClient :                  registerClient()
RialtoClient                   ->  RialtoApplicationSessionServer: Connect(rialto_listening_socket)
note right
Connect is not an API call, it is establishing IPC channel with server
end note
RialtoClient
opt first registerClient call
    RialtoClient               --> ApplicationRialtoApplicationSessionServer:
Application  registerClient()
                  RialtoApplicationSessionServer -->  RialtoClient:                   setApplicationState(Running)status, AppState::Running
end
RialtoClient                   ->  RialtoApplicationSessionServer: GetSharedMemory()
RialtoApplicationSessionServer --> RialtoClient:                   shm_fd
RialtoClient                   ->  RialtoClient:                   Map shared memory
RialtoClient                   --> Application:                    status, AppState::Running
Application                    -// ApplicationManager:             stateChanged(AppState::Running)

@enduml

@startuml

autonumber

participant ApplicationManager
participant RialtoApplicationSessionServer
participant Application
participant RialtoClient

ref over ApplicationManager, RialtoApplicationSessionServer : [[#RialtoApplicationSessionManagement-Inactive→Active Inactive to Active]] 

ApplicationManager             RialtoApplicationSessionServer ->  Application RialtoClient:                   NotifyNewStatestateChanged(AppState::Running)
ApplicationRialtoClient                    ->  RialtoClientApplication:                   setApplicationState stateChanged(AppState::Running)
RialtoClient                   ->  RialtoApplicationSessionServer: GetSharedMemory()
RialtoApplicationSessionServer --> RialtoClient:                   shm_fd
RialtoClient                   ->  RialtoClient:                   Map shared memory
RialtoClient                   --> Application:                    status
ApplicationManager             ->  Application :                   NotifyNewState(AppState::Running)
Application                    -// ApplicationManager:             stateChanged(AppState::Running)

@enduml

@startuml

autonumber

participant ApplicationManager
participant RialtoApplicationSessionServer
participant Application
participant RialtoClient

ApplicationManager
participant RialtoClient

ApplicationManager             ->  Application :       NotifyNewState(AppState::Inactive)
Application                    -->  ApplicationManager:
RialtoApplicationSessionServer -> RialtoClient:        setApplicationStatestateChanged(AppState::Inactive)
RialtoClient                   ->  RialtoClient :      Free CDM & Player resources
RialtoClient                   ->  RialtoClient:       Unmap shared memory
RialtoClient        --> Application:        status
Application  --> Application:      -// ApplicationManager: stateChanged(AppState::Inactive)

ref over ApplicationManager, RialtoApplicationSessionServer : [[#RialtoApplicationSessionManagement-Active→Inactive Active to Inactive]] 

@enduml