Class Poco::OSP::ServiceListener

File Information

Library: OSP
Package: Service
Header: Poco/OSP/ServiceListener.h

Description

ServiceListener objects are used to dynamically react to service registrations and unregistrations.

A ServiceListener is created with a query string (in same format as the one passed to ServiceRegistry::find()), as well as two event delegates by calling ServiceRegistry::createListener().

Whenever a service is registered that matches the given query, the serviceRegistered event is fired.

Correspondingly, when a matching service is unregistered, the serviceUnregistered event is fired.

When the ServiceListener is created and there are already services registered that match the query, the serviceRegistered delegate is immediately called for each service.

Inheritance

Direct Base Classes: Poco::RefCountedObject

All Base Classes: Poco::RefCountedObject

Member Summary

Member Functions: init, onServiceRefRegistered, onServiceRefUnregistered, onServiceRegistered, onServiceUnregistered

Inherited Functions: duplicate, referenceCount, release

Types Aliases

ConstPtr

using ConstPtr = const Ptr;

Ptr

using Ptr = Poco::AutoPtr < ServiceListener >;

Constructors

ServiceListener

template < typename Delegate > ServiceListener(
    ServiceRegistry & registry,
    const std::string & query,
    const Delegate & registeredDelegate,
    const Delegate & unregisteredDelegate
);