gcs_communication_event_listener.h

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/* Copyright (c) 2014, 2024, Oracle and/or its affiliates.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#ifndef GCS_COMMUNICATION_EVENT_LISTENER_INCLUDED
#define GCS_COMMUNICATION_EVENT_LISTENER_INCLUDED
 
#include "plugin/group_replication/libmysqlgcs/include/mysql/gcs/gcs_message.h"
 
/**
  @class Gcs_communication_event_listener
 
  This interface is implemented by those who wish to receive messages.
 
  Please check a working example in Gcs_communication_interface.
*/
class Gcs_communication_event_listener {
 public:
  /**
    This method is called whenever a message is to be delivered.
 
    @param[in] message The received message. This is currently a
                       reference to avoid the existence of dangling
                       pointers.
  */
 
  virtual void on_message_received(const Gcs_message &message) const = 0;
 
  virtual ~Gcs_communication_event_listener() = default;
};
 
#endif  // GCS_COMMUNICATION_EVENT_LISTENER_INCLUDED