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/* -*- C++ -*- */
/****************************************************************************
** Copyright (c) 2001-2014
**
** This file is part of the QuickFIX FIX Engine
**
** This file may be distributed under the terms of the quickfixengine.org
** license as defined by quickfixengine.org and appearing in the file
** LICENSE included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.quickfixengine.org/LICENSE for licensing information.
**
** Contact ask@quickfixengine.org if any conditions of this licensing are
** not clear to you.
**
****************************************************************************/
#ifndef FIX_FILESTORE_H
#define FIX_FILESTORE_H
#ifdef _MSC_VER
#pragma warning(disable : 4503 4355 4786 4290)
#endif
#include "MessageStore.h"
#include "SessionSettings.h"
#include <cstdint>
#include <fstream>
#include <string>
namespace FIX {
class Session;
/// Creates a file based implementation of MessageStore.
class FileStoreFactory : public MessageStoreFactory {
public:
FileStoreFactory(const SessionSettings &settings)
: m_settings(settings) {};
FileStoreFactory(const std::string &path)
: m_path(path) {};
MessageStore *create(const UtcTimeStamp &, const SessionID &);
void destroy(MessageStore *);
private:
std::string m_path;
SessionSettings m_settings;
};
/*! @} */
/**
* File based implementation of MessageStore.
*
* Four files are created by this implementation. One for storing outgoing
* messages, one for indexing message locations, one for storing sequence numbers,
* and one for storing the session creation time.
*
* The formats of the files are:<br>
*
* [path]+[BeginString]-[SenderCompID]-[TargetCompID].body<br>
*
* [path]+[BeginString]-[SenderCompID]-[TargetCompID].header<br>
*
* [path]+[BeginString]-[SenderCompID]-[TargetCompID].seqnums<br>
*
* [path]+[BeginString]-[SenderCompID]-[TargetCompID].session<br>
*
*
* The messages file is a pure stream of %FIX messages.<br><br>
* The sequence number file is in the format of<br>
*
* [SenderMsgSeqNum] : [TargetMsgSeqNum]<br><br>
* The session file is a UTC timestamp in the format of<br>
*
* YYYYMMDD-HH:MM:SS
*/
class FileStore : public MessageStore {
public:
FileStore(const UtcTimeStamp &now, std::string, const SessionID &sessionID);
virtual ~FileStore();
bool set(SEQNUM, const std::string &) EXCEPT(IOException);
void get(SEQNUM, SEQNUM, std::vector<std::string> &) const EXCEPT(IOException);
SEQNUM getNextSenderMsgSeqNum() const EXCEPT(IOException);
SEQNUM getNextTargetMsgSeqNum() const EXCEPT(IOException);
void setNextSenderMsgSeqNum(SEQNUM value) EXCEPT(IOException);
void setNextTargetMsgSeqNum(SEQNUM value) EXCEPT(IOException);
void incrNextSenderMsgSeqNum() EXCEPT(IOException);
void incrNextTargetMsgSeqNum() EXCEPT(IOException);
UtcTimeStamp getCreationTime() const EXCEPT(IOException);
void reset(const UtcTimeStamp &now) EXCEPT(IOException);
void refresh() EXCEPT(IOException);
private:
typedef std::pair<int64_t, std::size_t> OffsetSize;
typedef std::map<SEQNUM, OffsetSize> NumToOffset;
void open(bool deleteFile);
void populateCache();
bool readFromFile(int64_t offset, int size, std::string &msg);
void setSeqNum();
void setSession();
bool get(SEQNUM, std::string &) const EXCEPT(IOException);
MemoryStore m_cache;
NumToOffset m_offsets;
std::string m_msgFileName;
std::string m_headerFileName;
std::string m_seqNumsFileName;
std::string m_sessionFileName;
FILE *m_msgFile;
FILE *m_headerFile;
FILE *m_seqNumsFile;
FILE *m_sessionFile;
};
} // namespace FIX
#endif // FIX_FILESTORE_H