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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008-2009 Sun Microsystems, Inc.
* Copyright (C) 2010 Jay Pipes
*
* Authors:
*
* Jay Pipes <jaypipes@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include <drizzled/plugin/replication.h>
#include <drizzled/plugin/plugin.h>
#include <drizzled/visibility.h>
/**
* @file Defines the API for a TransactionReplicator.
*
* All a replicator does is replicate/reproduce
* events, optionally transforming them before sending them off to a TransactionApplier.
*
* An applier is responsible for applying events, not a replicator...
*/
namespace drizzled {
namespace plugin {
/**
* Class which replicates Transaction messages
*/
class DRIZZLED_API TransactionReplicator : public Plugin
{
TransactionReplicator();
TransactionReplicator(const TransactionReplicator &);
TransactionReplicator& operator=(const TransactionReplicator &);
public:
explicit TransactionReplicator(std::string name_arg)
: Plugin(name_arg, "TransactionReplicator")
{
}
virtual ~TransactionReplicator() {}
/**
* Replicate a Transaction message to a TransactionApplier.
*
* @note
*
* It is important to note that memory allocation for the
* supplied pointer is not guaranteed after the completion
* of this function -- meaning the caller can dispose of the
* supplied message. Therefore, replicators and appliers
* implementing an asynchronous replication system must copy
* the supplied message to their own controlled memory storage
* area.
*
* @param Pointer to the applier of the command message
* @param Transaction message to be replicated
*/
virtual ReplicationReturnCode replicate(TransactionApplier *in_applier,
Session &session,
message::Transaction &to_replicate)= 0;
static bool addPlugin(TransactionReplicator *replicator);
static void removePlugin(TransactionReplicator *replicator);
};
} /* namespace plugin */
} /* namespace drizzled */
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