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Diffstat (limited to 'lib/raidfile/RaidFileController.h')
| -rw-r--r-- | lib/raidfile/RaidFileController.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/lib/raidfile/RaidFileController.h b/lib/raidfile/RaidFileController.h new file mode 100644 index 00000000..17f1237e --- /dev/null +++ b/lib/raidfile/RaidFileController.h @@ -0,0 +1,145 @@ +// distribution boxbackup-0.10 (svn version: 494) +// +// Copyright (c) 2003 - 2006 +// Ben Summers and contributors. All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// 3. All use of this software and associated advertising materials must +// display the following acknowledgment: +// This product includes software developed by Ben Summers. +// 4. The names of the Authors may not be used to endorse or promote +// products derived from this software without specific prior written +// permission. +// +// [Where legally impermissible the Authors do not disclaim liability for +// direct physical injury or death caused solely by defects in the software +// unless it is modified by a third party.] +// +// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR +// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, +// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +// +// +// -------------------------------------------------------------------------- +// +// File +// Name: RaidFileController.h +// Purpose: Controls config and daemon comms for RaidFile classes +// Created: 2003/07/08 +// +// -------------------------------------------------------------------------- + +/* NOTE: will log to local5: include a line like + local5.info /var/log/raidfile + in /etc/syslog.conf +*/ + +#ifndef RAIDFILECONTROLLER__H +#define RAIDFILECONTROLLER__H + +#include <string> +#include <vector> + +// -------------------------------------------------------------------------- +// +// Class +// Name: RaidFileDiscSet +// Purpose: Describes a set of paritions for RAID like files. +// Use as list of directories containing the files. +// Created: 2003/07/08 +// +// -------------------------------------------------------------------------- +class RaidFileDiscSet : public std::vector<std::string> +{ +public: + RaidFileDiscSet(int SetID, unsigned int BlockSize) + : mSetID(SetID), + mBlockSize(BlockSize) + { + } + RaidFileDiscSet(const RaidFileDiscSet &rToCopy) + : std::vector<std::string>(rToCopy), + mSetID(rToCopy.mSetID), + mBlockSize(rToCopy.mBlockSize) + { + } + + ~RaidFileDiscSet() + { + } + + int GetSetID() const {return mSetID;} + + int GetSetNumForWriteFiles(const std::string &rFilename) const; + + unsigned int GetBlockSize() const {return mBlockSize;} + + // Is this disc set a non-RAID disc set? (ie files never get transformed to raid storage) + bool IsNonRaidSet() const {return 1 == size();} + +private: + int mSetID; + unsigned int mBlockSize; +}; + +class _RaidFileController; // compiler warning avoidance + +// -------------------------------------------------------------------------- +// +// Class +// Name: RaidFileController +// Purpose: Manages the configuration of the RaidFile system, handles +// communication with the daemon. +// Created: 2003/07/08 +// +// -------------------------------------------------------------------------- +class RaidFileController +{ + friend class _RaidFileController; // to avoid compiler warning +private: + RaidFileController(); + RaidFileController(const RaidFileController &rController); +public: + ~RaidFileController(); + +public: + void Initialise(const char *ConfigFilename = "/etc/boxbackup/raidfile.conf"); + int GetNumDiscSets() {return mSetList.size();} + + // -------------------------------------------------------------------------- + // + // Function + // Name: RaidFileController::GetController() + // Purpose: Gets the one and only controller object. + // Created: 2003/07/08 + // + // -------------------------------------------------------------------------- + static RaidFileController &GetController() {return mController;} + RaidFileDiscSet &GetDiscSet(unsigned int DiscSetNum); + + static std::string DiscSetPathToFileSystemPath(unsigned int DiscSetNum, const std::string &rFilename, int DiscOffset); + +private: + std::vector<RaidFileDiscSet> mSetList; + + static RaidFileController mController; +}; + +#endif // RAIDFILECONTROLLER__H + |