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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.
*
* Authors:
*
* Jay Pipes <joinfu@sun.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; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*/
/**
* @file
*
* Defines a simple structure representing a transaction log entry.
*/
#pragma once
#include <drizzled/replication_services.h>
#include <string>
/**
* Represents a single entry in the transaction log.
*/
class TransactionLogEntry
{
public:
TransactionLogEntry(drizzled::ReplicationServices::MessageType in_type,
off_t in_offset,
size_t length);
~TransactionLogEntry();
/**
* Returns a string representation of the entry type
*/
const char *getTypeAsString() const;
/**
* Returns the entry's offset in the log
*/
off_t getOffset() const;
/**
* Returns the length of the entry in bytes
*/
size_t getLengthInBytes() const;
private:
enum drizzled::ReplicationServices::MessageType type; ///< The type of the entry
off_t offset; ///< Offset into the log file
size_t length; ///< Length in bytes of the entry
};
class TransactionLogTransactionEntry
{
public:
TransactionLogTransactionEntry(off_t in_offset,
const drizzled::message::Transaction &transaction,
uint32_t in_checksum);
~TransactionLogTransactionEntry();
/**
* Returns the entry's offset in the log
*/
off_t getOffset() const;
/**
* Returns the transaction's server ID
*/
uint32_t getServerId() const;
/**
* Returns the transaction's start timestamp
*/
uint64_t getStartTimestamp() const;
/**
* Returns the transaction's end timestamp
*/
uint64_t getEndTimestamp() const;
/**
* Returns the transaction's ID
*/
uint64_t getTransactionId() const;
/**
* Returns the number of statements in the transaction
*/
uint64_t getNumStatements() const;
/**
* Returns the checksum for the transaction message bytes
*/
uint32_t getChecksum() const;
private:
off_t offset; ///< Offset into the log file
uint32_t server_id; ///< The server ID that this transaction came from
uint64_t transaction_id; ///< The transaction's ID
uint64_t start_timestamp; ///< The transaction's start timestamp
uint64_t end_timestamp; ///< The transaction's end timestamp
uint32_t num_statements; ///< Number of Statements in the transaction
uint32_t checksum; ///< Checksum of the transaction message bytes
};
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