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-*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Definitions required for Configuration Variables plugin
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* Copyright (C) 2008 Mark Atwood
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008-2009 Sun Microsystems
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* Jay Pipes <joinfu@sun.com>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef DRIZZLED_PLUGIN_REPLICATOR_H
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#define DRIZZLED_PLUGIN_REPLICATOR_H
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* Defines the API for Replication
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* @file Defines the API for a Replicator.
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* All a replicator does is replicate/reproduce
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* events, optionally transforming them before sending them off to an applier.
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* An applier is responsible for applying events, not a replicator...
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/* some forward declarations needed */
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* Base class for replication implementations.
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* if a method returns bool true, that means it failed.
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* Class which replicates Command messages
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virtual bool session_init_hook(Session *) { return false; }
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virtual bool row_insert_hook(Session *, Table *) { return false; }
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virtual bool row_update_hook(Session *, Table *,
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const unsigned char *,
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const unsigned char *) { return false; }
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virtual bool row_delete_hook(Session *, Table *) { return false; }
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virtual bool end_transaction_hook(Session *, bool, bool) { return false; }
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virtual bool statement_hook(Session *, const char *, size_t) { return false; }
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Replicator() : enabled(true) {}
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virtual ~Replicator() {}
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* Initialize session for replication
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bool session_init(Session *session)
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return session_init_hook(session);
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* @param current Session
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* @param Table inserted
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bool row_insert(Session *session, Table *table)
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return row_insert_hook(session, table);
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* @param current Session
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* @param Table updated
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* @param before values
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bool row_update(Session *session, Table *table,
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const unsigned char *before,
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const unsigned char *after)
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return row_update_hook(session, table, before, after);
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* @param current session
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* @param Table deleted from
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bool row_delete(Session *session, Table *table)
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return row_delete_hook(session, table);
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* @param current Session
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* @param is autocommit on?
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* @param did the transaction commit?
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bool end_transaction(Session *session, bool autocommit, bool commit)
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return end_transaction_hook(session, autocommit, commit);
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* @param current Session
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* @param query string
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* @param length of query string in bytes
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bool statement(Session *session, const char *query, size_t query_length)
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return statement_hook(session, query, query_length);
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* Replicate a Command message to an Applier.
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* It is important to note that memory allocation for the
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* supplied pointer is not guaranteed after the completion
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* of this function -- meaning the caller can dispose of the
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* supplied message. Therefore, replicators and appliers
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* implementing an asynchronous replication system must copy
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* the supplied message to their own controlled memory storage
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* @param Command message to be replicated
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virtual void replicate(Applier *in_applier, drizzled::message::Command *to_replicate)= 0;
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* A replicator plugin should override this with its
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* internal method for determining if it is active or not.
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virtual bool isActive() {return false;}
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} /* end namespace drizzled::plugin */
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} /* end namespace drizzled */
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#endif /* DRIZZLED_PLUGIN_REPLICATOR_H */