SystemControllerConnection

An implementation of the ISystemControllerInterface for a System controller residing in a remote server. The connection to the server uses a Websocket.

#include <SystemControllerConnection.h>

Inherits from ISystemControllerInterface

Public Classes

	Name
struct	Settings Settings for a SystemControllerConnection.

Public Types

	Name
enum class uint32_t	ComponentType { kIngest, kMediaReceiver, kMediaStreamer, kControlDataReceiver, kControlDataSender} Enumeration of component types the component using this SystemControllerConnection can tell the System Controller to be seen as.

Public Functions

	Name
	SystemControllerConnection()
	~SystemControllerConnection() override
bool	configure(const Settings & settings, const std::shared_ptr< ISystemControllerInterface > & parentInterface =nullptr) Configure this connection. This method should be called before calling.
virtual bool	connect() override Connect to the server using the settings set with the.
virtual bool	isConnected() const override
virtual std::string	getUUID() const override
virtual Response	sendRequest(const std::string & request, const nlohmann::json & parameters) override Send a JSON object to the system controller server and awaits the response.
virtual bool	disconnect() override Disconnect from the server.
virtual bool	registerRequestCallback(const Callbacks & callbacks) override Register callbacks to call when getting requests from the server or the server connection is lost.
virtual bool	hasParent() const override
virtual std::shared_ptr< ISystemControllerInterface >	getParentInterface() const override
	SystemControllerConnection(SystemControllerConnection const & ) =delete
	SystemControllerConnection(SystemControllerConnection && ) =delete
SystemControllerConnection &	operator=(SystemControllerConnection const & ) =delete
SystemControllerConnection &	operator=(SystemControllerConnection && ) =delete

Additional inherited members

Public Classes inherited from ISystemControllerInterface

	Name
struct	Callbacks A struct containing the callbacks that needs to be registered by the component using this interface.
struct	Response A response to a request, consists of a status code and an (optional) parameters JSON object.

Public Types inherited from ISystemControllerInterface

	Name
enum class uint32_t	StatusCode { SUCCESS, TOO_MANY_REQUESTS, UUID_ALREADY_REGISTERED, FORMAT_ERROR, ALREADY_CONFIGURED, OUT_OF_RESOURCES, NOT_FOUND, INTERNAL_ERROR, CONNECTION_FAILED, TIMEOUT_EXCEEDED, KEY_MISMATCH, UNKNOWN_REQUEST, MALFORMED_REQUEST, ALREADY_IN_USE} Status codes used in JSON response messages for Websockets. These are starting at 3000 since the 1000 - 2000 range is taken up by the Spec: https://datatracker.ietf.org/doc/html/rfc6455#section-7.4.1.

Name

enum class uint32_t

StatusCode { SUCCESS, TOO_MANY_REQUESTS, UUID_ALREADY_REGISTERED, FORMAT_ERROR, ALREADY_CONFIGURED, OUT_OF_RESOURCES, NOT_FOUND, INTERNAL_ERROR, CONNECTION_FAILED, TIMEOUT_EXCEEDED, KEY_MISMATCH, UNKNOWN_REQUEST, MALFORMED_REQUEST, ALREADY_IN_USE}
Status codes used in JSON response messages for Websockets. These are starting at 3000 since the 1000 - 2000 range is taken up by the Spec: https://datatracker.ietf.org/doc/html/rfc6455#section-7.4.1.

Public Functions inherited from ISystemControllerInterface

	Name
virtual	~ISystemControllerInterface() =default Virtual destructor.

Public Types Documentation

enum ComponentType

Enumerator	Value	Description
kIngest
kMediaReceiver
kMediaStreamer
kControlDataReceiver
kControlDataSender

Enumeration of component types the component using this SystemControllerConnection can tell the System Controller to be seen as.

Public Functions Documentation

function SystemControllerConnection

SystemControllerConnection()

function ~SystemControllerConnection

~SystemControllerConnection() override

function configure

bool configure(
    const Settings & settings,
    const std::shared_ptr< ISystemControllerInterface > & parentInterface =nullptr
)

Configure this connection. This method should be called before calling.

Parameters:

settings The settings to use when connecting to the server
parentInterface Optional parent interface that this interface is a child of. Setting this to nullptr means that this interface does not have a parent interface

See: connect.

Return: True if successfully configured, false otherwise

function connect

virtual bool connect() override

Connect to the server using the settings set with the.

See: configure method.

Return: True if connection was successful, false otherwise

Reimplements: ISystemControllerInterface::connect

function isConnected

virtual bool isConnected() const override

Return: True if this class is connected to the server, false otherwise

Reimplements: ISystemControllerInterface::isConnected

function getUUID

virtual std::string getUUID() const override

Return: The UUID of this interface to the System controller

Reimplements: ISystemControllerInterface::getUUID

function sendRequest

virtual Response sendRequest(
    const std::string & request,
    const nlohmann::json & parameters
) override

Send a JSON object to the system controller server and awaits the response.

Parameters:

request The name of the request command
parameters The parameters part of the JSON message

Return: The response from the controller

Note: The status code might be TIMEOUT in case no response was received within the timeframe

Reimplements: ISystemControllerInterface::sendRequest

function disconnect

virtual bool disconnect() override

Disconnect from the server.

Return: True if successfully disconnected, false on internal error

Reimplements: ISystemControllerInterface::disconnect

function registerRequestCallback

virtual bool registerRequestCallback(
    const Callbacks & callbacks
) override

Parameters:

callbacks The callbacks to set

Return: True if successfully registered, false if a callback is not set, or if already connected to the server

Reimplements: ISystemControllerInterface::registerRequestCallback

function hasParent

virtual bool hasParent() const override

Return: True if this component has a parent ISystemControllerInterface, false otherwise

Reimplements: ISystemControllerInterface::hasParent

function getParentInterface

virtual std::shared_ptr< ISystemControllerInterface > getParentInterface() const override

Return: A pointer to parent’s ISystemControllerInterface, if any. Returns nullptr in case there is no parent

Reimplements: ISystemControllerInterface::getParentInterface

function SystemControllerConnection

SystemControllerConnection(
    SystemControllerConnection const & 
) =delete

function SystemControllerConnection

SystemControllerConnection(
    SystemControllerConnection && 
) =delete

function operator=

SystemControllerConnection & operator=(
    SystemControllerConnection const & 
) =delete

function operator=

SystemControllerConnection & operator=(
    SystemControllerConnection && 
) =delete

Updated on 2022-06-22 at 16:53:25 +0200