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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems
*
* 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 the implementation of a simple index into a transaction log.
*/
#include "config.h"
#include <drizzled/message/transaction.pb.h>
#include "transaction_log_index.h"
#include <pthread.h>
using namespace std;
using namespace drizzled;
TransactionLogIndex *transaction_log_index= NULL; /* The singleton transaction log index */
TransactionLogIndex::TransactionLogIndex(TransactionLog &in_log) :
log(in_log),
index_file(-1),
index_file_path(),
has_error(false),
error_message(),
min_end_timestamp(0),
max_end_timestamp(0),
min_transaction_id(0),
max_transaction_id(0),
entries(),
transaction_entries()
{
(void) pthread_mutex_init(&index_lock, NULL);
entries.reserve(1024);
transaction_entries.reserve(1024);
open();
}
TransactionLogIndex::~TransactionLogIndex()
{
entries.clear();
transaction_entries.clear();
pthread_mutex_destroy(&index_lock);
}
void TransactionLogIndex::clear()
{
pthread_mutex_lock(&index_lock);
min_end_timestamp= 0;
max_end_timestamp= 0;
min_transaction_id= 0;
max_transaction_id= 0;
entries.clear();
transaction_entries.clear();
clearError();
pthread_mutex_unlock(&index_lock);
}
void TransactionLogIndex::open()
{
}
bool TransactionLogIndex::hasError() const
{
return has_error;
}
void TransactionLogIndex::clearError()
{
has_error= false;
error_message.clear();
}
const std::string &TransactionLogIndex::getErrorMessage() const
{
return error_message;
}
uint64_t TransactionLogIndex::getMinEndTimestamp() const
{
return min_end_timestamp;
}
uint64_t TransactionLogIndex::getMaxEndTimestamp() const
{
return max_end_timestamp;
}
uint64_t TransactionLogIndex::getMinTransactionId() const
{
return min_transaction_id;
}
uint64_t TransactionLogIndex::getMaxTransactionId() const
{
return max_transaction_id;
}
uint64_t TransactionLogIndex::getNumLogEntries() const
{
return entries.size();
}
uint64_t TransactionLogIndex::getNumTransactionEntries() const
{
return transaction_entries.size();
}
TransactionLog::Entries &TransactionLogIndex::getEntries()
{
return entries;
}
TransactionLog::TransactionEntries &TransactionLogIndex::getTransactionEntries()
{
return transaction_entries;
}
size_t TransactionLogIndex::getTransactionEntriesSizeInBytes()
{
return transaction_entries.capacity() * sizeof(TransactionLog::TransactionEntries::value_type);
}
size_t TransactionLogIndex::getEntriesSizeInBytes()
{
return entries.capacity() * sizeof(TransactionLog::Entries::value_type);
}
size_t TransactionLogIndex::getSizeInBytes()
{
return sizeof(this) + getEntriesSizeInBytes() + getTransactionEntriesSizeInBytes();
}
void TransactionLogIndex::addEntry(const TransactionLogEntry &entry,
const message::Transaction &transaction,
uint32_t checksum)
{
pthread_mutex_lock(&index_lock);
if (entries.empty())
{
/* First entry...set the minimums */
min_transaction_id= transaction.transaction_context().transaction_id();
min_end_timestamp= transaction.transaction_context().end_timestamp();
}
max_transaction_id= transaction.transaction_context().transaction_id();
max_end_timestamp= transaction.transaction_context().end_timestamp();
entries.push_back(entry);
transaction_entries.push_back(TransactionLogTransactionEntry(entry.getOffset(),
transaction,
checksum));
pthread_mutex_unlock(&index_lock);
}
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