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// -*- C++ -*-
/**
* @file EC_Gateway.h
*
* @author Carlos O'Ryan (coryan@cs.wustl.edu)
*
* Based on previous work by Tim Harrison (harrison@cs.wustl.edu) and
* other members of the DOC group. More details can be found in:
*
* http://doc.ece.uci.edu/~coryan/EC/index.html
*/
#ifndef TAO_EC_GATEWAY_H
#define TAO_EC_GATEWAY_H
#include /**/ "ace/pre.h"
#include /**/ "orbsvcs/Event/event_serv_export.h"
#include "orbsvcs/RtecEventChannelAdminS.h"
#include "orbsvcs/RtecEventCommS.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class TAO_EC_Gateway
*
* @brief Event Channel Gateway
*
* There are several ways to connect several EC together, for
* instance:
* + A single class can use normal IIOP and connect to one EC as
* a supplier and to another EC as a consumer.
* + A class connects as a consumer and transmit the events using
* multicast, another class receives the multicast messages and
* transform them back into a push() call.
* This is an abstract class to represent all the different
* strategies for EC distribution.
*/
class TAO_RTEvent_Serv_Export TAO_EC_Gateway
: public POA_RtecEventChannelAdmin::Observer
{
public:
/// Default constructor.
TAO_EC_Gateway (void);
/// Destructor
virtual ~TAO_EC_Gateway (void);
/// The gateway must disconnect from all the relevant event channels,
/// or any other communication media (such as multicast groups).
virtual void close (void) = 0;
/// Obtain and modify the observer handle.
void observer_handle (RtecEventChannelAdmin::Observer_Handle h);
RtecEventChannelAdmin::Observer_Handle observer_handle (void) const;
private:
RtecEventChannelAdmin::Observer_Handle handle_;
};
TAO_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* ACE_EC_GATEWAY_H */
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