NewService creates a pointer to a new Service struct with the provided values.

MsgServiceInitialized message to return when service has initialized.

MsgServiceInitializing message to return when service is initializing.

MsgServiceShutdown message to return when a service has shutdown.

MsgServiceShuttingDown message to return when a service is shutting down.

MsgServiceStarted message to return when service has started.

MsgServiceStarting message to return when service is starting up.

ErrNilService is returned when service functions are called but the service is not instantiated.

ErrServiceAlreadyStarted message to return when a service is called to start but is already running.

ErrServiceAlreadyStopped message to return when a service is called to stop but is already stopped.

ErrServiceNilWaitGroup is returned when a service has nil wait group.

ErrServiceNotEnabled is returned when a service is called to start but is not enabled.

ErrServiceNotFound is returned when a service can not be found.

ErrSubsystemNotEnabled is returned when a subsystem can't be found.

Service is the base type for all services defined in the project.

IService exports an interface that is implemented by each Service.

IServiceManager exports an interface that is implemented by the engine to manage all services.