A content client variant that provides direct access to the content manager without any extra overhead. More...

#include <content_client_local.hpp>

Inheritance diagram for kanzi::connect::LocalContentClient:

Public Member Functions
virtual	~LocalContentClient ()
	Destructor.


virtual ContentToken	acquireContentToken () override

virtual void	releaseContentToken (ContentToken token) override
	Release content token and unregister from content service.

virtual bool	subscribe (ContentToken token, ContentQueryArgumentsSharedPtr args, ResultCallbackFunction callback, ContentInvalidationFunction invalidationCallback) override
	Subscribe to a table based content.

virtual bool	subscribeEx (ContentToken token, ContentQueryArgumentsSharedPtr args, ContentClientObserver *callback) override
	Subscribe to content.

virtual void	unsubscribe (ContentToken token, const string &uri) override
	Unsubscribe from content URI.

virtual bool	addContentProvider (ContentToken token, const string &uri, ContentProviderSharedPtr contentProvider) override
	Adds content provider to content system.

virtual void	removeContentProvider (ContentToken token, ContentProviderSharedPtr contentProvider) override
	Removes content provider from content system.

virtual bool	subscribeRuntimeData (ContentToken token, const string uri, RuntimeDataResultCallbackFunction callback, int credits, int creditreturninterval) override
	Subscribes to a service runtime data.

virtual bool	subscribeRuntimeDataEx (ContentToken token, const string uri, ContentClientRuntimeDataObserver *observer, int credits, int creditreturninterval) override
	Subscribe to service runtime data.

virtual void	unsubscribeRuntimeData (ContentToken token, const string &uri) override
	Unsubscribe from runtime data.

virtual bool	hasSession (ContentToken token) override
	Determine whether specific content token has session currently available.

virtual void	setVerboseLog (bool verbose) override
	Configures verbose logging for the content client.

virtual bool	getVerboseLog () const override
	Return the current state of log verbosity.

Public Member Functions inherited from kanzi::connect::ContentClient
virtual string	getIdentifier () const
	Returns the type of the service.

virtual void	work ()
	See AbstractServiceClient::work()

virtual	~ContentClient ()
	Destructor.

Public Member Functions inherited from kanzi::connect::AbstractServiceClient
	AbstractServiceClient ()
	Constructor.

AbstractSession::MessageSubscriptionToken	addMessageSubscription (const string &messageType, AbstractSession::MessageReceivedFunction function)

SessionRunningSubscriptionToken	addSessionRunningSubscription (SessionRunningFunction function)

SessionRunningSubscriptionToken	addSessionStoppedSubscription (SessionStoppedFunction function)

optional< int >	getActiveSessionIdentifier ()

optional< const AbstractSession::ServiceAttributes >	getServiceAttributes ()

virtual void	onSessionRunning ()

virtual void	onSessionStopped ()

void	removeMessageSubscription (const string &messageType, AbstractSession::MessageSubscriptionToken token)

void	removeSessionRunningSubscription (SessionRunningSubscriptionToken token)

void	removeSessionStoppedSubscription (SessionRunningSubscriptionToken token)

void	setEnabledState (bool newEnabledState)
	Enable/disable the service by allowing or blocking traffic between client and server.

bool	transmit (const MessagePackage &message)

virtual	~AbstractServiceClient ()
	Destructor.

Static Public Member Functions
static LocalContentClientSharedPtr	create (ContentManagerSharedPtr contentManager)
	Creates a new instance of LocalContentClient class.

Static Public Member Functions inherited from kanzi::connect::ContentClient
static string	Type ()
	Type accessors.

Protected Member Functions
	LocalContentClient (ContentManagerSharedPtr contentManager)
	Constructor.

Protected Member Functions inherited from kanzi::connect::ContentClient
	ContentClient ()
	Constructor.

Protected Member Functions inherited from kanzi::connect::AbstractServiceClient
virtual AbstractSessionSharedPtr	getSession ()

Additional Inherited Members
Public Types inherited from kanzi::connect::ContentClient
typedef function< void(const string &uri, int reason, int startRow, int endRow)	ContentInvalidationFunction)
	Callback function for content invalidation.

typedef shared_ptr< void >	ContentToken
	A token that identifies the content session / consumer.

typedef function< void(const string &uri, ContentDataSharedPtr data)	ResultCallbackFunction)
	Callback function for content result.

typedef function< void(const string &uri, RuntimeDataObjectSharedPtr data)	RuntimeDataResultCallbackFunction)
	callback function for runtimedata content result.

Public Types inherited from kanzi::connect::AbstractServiceClient
typedef function< void(void)>	SessionRunningFunction

typedef shared_ptr< void >	SessionRunningSubscriptionToken

typedef function< void(void)>	SessionStoppedFunction

Protected Types inherited from kanzi::connect::AbstractServiceClient
enum	SessionState { INITIALIZED = 0 , RUNNING = 1 , STOPPED = 2 }

Protected Attributes inherited from kanzi::connect::AbstractServiceClient
SessionState	m_sessionState

Detailed Description

A content client variant that provides direct access to the content manager without any extra overhead.

This class can be used in Kanzi Connect server to directly operate with the Content Service. It introduces certain constraints to the usage:

Since content manager is a core service of Kanzi Connect server, this class is only useful on server-side development.
The Content Service and the user of this class (content subscriber) need to operate in the same process and thread.
The access to the Content Service is synchronous and is not protected in any way (ie. it is not thread safe). To get around these constraints, use RemoteContentClient class instead.

Constructor & Destructor Documentation

◆ ~LocalContentClient()

virtual kanzi::connect::LocalContentClient::~LocalContentClient ( )

virtual

Destructor.

◆ LocalContentClient()

kanzi::connect::LocalContentClient::LocalContentClient ( ContentManagerSharedPtr contentManager )

protected

Constructor.

Member Function Documentation

◆ acquireContentToken()

virtual ContentToken kanzi::connect::LocalContentClient::acquireContentToken ( )

overridevirtual

See also: ContentClient

Implements kanzi::connect::ContentClient.

◆ addContentProvider()

virtual bool kanzi::connect::LocalContentClient::addContentProvider	(	ContentToken	token,
		const string &	uri,
		ContentProviderSharedPtr	contentProvider )

overridevirtual

Adds content provider to content system.

Parameters

token	Content token, identifies the user of content API, needs to be acquired first.
uri	Content URI that is handled by the content provider.
contentProvider	Content provider to add.

Returns: true if succeeded, false on error.

Implements kanzi::connect::ContentClient.

◆ create()

static LocalContentClientSharedPtr kanzi::connect::LocalContentClient::create ( ContentManagerSharedPtr contentManager )

static

Creates a new instance of LocalContentClient class.

Parameters

contentManager Content Manager that is used to access to content.

Returns: Shared pointer to new LocalContentClient instance.

◆ getVerboseLog()

virtual bool kanzi::connect::LocalContentClient::getVerboseLog ( ) const

overridevirtual

Return the current state of log verbosity.

Returns: log verbosity.

Implements kanzi::connect::ContentClient.

◆ hasSession()

virtual bool kanzi::connect::LocalContentClient::hasSession ( ContentToken token )

overridevirtual

Determine whether specific content token has session currently available.

Parameters

token content token

Returns: true if session exists

Implements kanzi::connect::ContentClient.

◆ releaseContentToken()

virtual void kanzi::connect::LocalContentClient::releaseContentToken ( ContentToken token )

overridevirtual

Release content token and unregister from content service.

Parameters

token the content token to release.

Implements kanzi::connect::ContentClient.

◆ removeContentProvider()

virtual void kanzi::connect::LocalContentClient::removeContentProvider	(	ContentToken	token,
		ContentProviderSharedPtr	contentProvider )

overridevirtual

Removes content provider from content system.

Parameters

token	Content token, identifies the user of content API, needs to be acquired first.
contentProvider	Content provider to remove.

Implements kanzi::connect::ContentClient.

◆ setVerboseLog()

virtual void kanzi::connect::LocalContentClient::setVerboseLog ( bool verbose )

overridevirtual

Configures verbose logging for the content client.

Parameters

verbose whether to be verbose or not.

Implements kanzi::connect::ContentClient.

◆ subscribe()

virtual bool kanzi::connect::LocalContentClient::subscribe	(	ContentToken	token,
		ContentQueryArgumentsSharedPtr	args,
		ResultCallbackFunction	callback,
		ContentInvalidationFunction	invalidationCallback )

overridevirtual

Subscribe to a table based content.

Parameters

token	Content token, identifies the user of content API, needs to be acquired first. When subscribing to table based content (content:// or service://) new token must be allocated for each content domain (E.g. com.rightware.content).
args	Query Arguments.
callback	Function callback for results.
invalidationCallback	function to invoke when content provider informs that certain part of the content has been invalidated.

Returns: true if subscription started, false if problems were met. Possible reasons for failure include for example trying to subscribe to same domain twice using same content token.

Implements kanzi::connect::ContentClient.

◆ subscribeEx()

virtual bool kanzi::connect::LocalContentClient::subscribeEx	(	ContentToken	token,
		ContentQueryArgumentsSharedPtr	args,
		ContentClientObserver *	observer )

overridevirtual

Subscribe to content.

Parameters

token	content content, identifies the user of content API.
args	Query Arguments.

Returns: true if subscription started, false if there were no session available.

Implements kanzi::connect::ContentClient.

◆ subscribeRuntimeData()

virtual bool kanzi::connect::LocalContentClient::subscribeRuntimeData	(	ContentToken	token,
		const string	uri,
		RuntimeDataResultCallbackFunction	callback,
		int	credits,
		int	creditreturninterval )

overridevirtual

Subscribes to a service runtime data.

Parameters

token	Content token, identifies the user of content API.
uri	The content URI where to subscribe. Usually something like service://cluster.
callback	Function callback for results.
credits	amount of transter credits that define the maximum amount of queued items (including both service and client ends) of this type.
creditreturninterval	how often functionality will return transfer credits to the content producer. Smaller the value more housekeeping traffic is produced.

Returns: true if subscription started, false if there were no session available.

Implements kanzi::connect::ContentClient.

◆ subscribeRuntimeDataEx()

virtual bool kanzi::connect::LocalContentClient::subscribeRuntimeDataEx	(	ContentToken	token,
		const string	uri,
		ContentClientRuntimeDataObserver *	observer,
		int	credits,
		int	creditreturninterval )

overridevirtual

Subscribe to service runtime data.

Parameters

token	Content token, identifies the user of content API, needs to be acquired first.
observer	Observer interface to be invoked when subscribed runtime data changes.
credits	amount of transter credits that define the maximum amount of queued items (including both service and client ends) of this type.
creditreturninterval	how often functionality will return transfer credits to the content producer. Smaller the value more housekeeping traffic is produced.

Returns: true if subscription started, false if there were no session available or subscription for the specific uri is already available.

Implements kanzi::connect::ContentClient.

◆ unsubscribe()

virtual void kanzi::connect::LocalContentClient::unsubscribe	(	ContentToken	token,
		const string &	uri )

overridevirtual

Unsubscribe from content URI.

Parameters

token	Content token.
uri	Content URI to unsubscribe. Must be previously subscribed.

Implements kanzi::connect::ContentClient.

◆ unsubscribeRuntimeData()

virtual void kanzi::connect::LocalContentClient::unsubscribeRuntimeData	(	ContentToken	token,
		const string &	URI )

overridevirtual

Unsubscribe from runtime data.

Parameters

token	Content token to unsubscribe.
uri	Service URI where to unsubscribe from.

Implements kanzi::connect::ContentClient.

The documentation for this class was generated from the following file:

content_service/content_client_local.hpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~LocalContentClient()

◆ LocalContentClient()

Member Function Documentation

◆ acquireContentToken()

◆ addContentProvider()

◆ create()

◆ getVerboseLog()

◆ hasSession()

◆ releaseContentToken()

◆ removeContentProvider()

◆ setVerboseLog()

◆ subscribe()

◆ subscribeEx()

◆ subscribeRuntimeData()

◆ subscribeRuntimeDataEx()

◆ unsubscribe()

◆ unsubscribeRuntimeData()