transaction_message_interface.h

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/* Copyright (c) 2018, 2025, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
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#ifndef TRANSACTION_MESSAGE_INTERFACE_INCLUDED
#define TRANSACTION_MESSAGE_INTERFACE_INCLUDED
 
#include <mysql/group_replication_priv.h>
#include <vector>
 
#include "my_inttypes.h"
#include "plugin/group_replication/include/gcs_plugin_messages.h"
 
class Gcs_message_data;
 
/*
  @class Transaction_message_interface
 
  Parent class of the transaction messages-
 */
class Transaction_message_interface : public Plugin_gcs_message,
                                      public Basic_ostream {
 public:
  explicit Transaction_message_interface(enum_cargo_type cargo_type)
      : Plugin_gcs_message(cargo_type) {}
  ~Transaction_message_interface() override = default;
 
  /**
     Length of the message.
 
     @return message length
  */
  virtual uint64_t length() = 0;
 
  /**
     Get the Gcs_message_data object, which contains the serialized
     transaction data.
     The internal Gcs_message_data is nullified, to avoid further usage
     of this Transaction object and the caller receives a pointer to the
     previously internal Gcs_message_data, which whom it is now responsible.
 
     @return the serialized transaction data in a Gcs_message_data object
  */
  virtual Gcs_message_data *get_message_data_and_reset() = 0;
};
 
#endif /* TRANSACTION_MESSAGE_INTERFACE_INCLUDED */