RetroShare/libretroshare/src/dbase/fimonitor.h

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/*
* RetroShare FileCache Module: fimonitor.h
*
* Copyright 2004-2007 by Robert Fernie.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License Version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "retroshare@lunamutt.com".
*
*/
#ifndef FILE_INDEX_MONITOR_H
#define FILE_INDEX_MONITOR_H
#include "dbase/findex.h"
#include "dbase/cachestrapper.h"
#include "util/rsthreads.h"
/******************************************************************************************
* The Local Monitoring Class: FileIndexMonitor.
*
* This periodically scans the directory tree, and updates any modified directories/files.
*
*****************************************************************************************/
/******************************************************************************************
STILL TODO:
(1) Implement Hash function.
bool FileIndexMonitor::hashFile(std::string path, FileEntry &fi);
(2) Add Shared directory controls to Monitor.
int FileIndexMonitor::addSharedDirectory(std::path);
int FileIndexMonitor::removeSharedDirectory(std::path);
std::string FileIndexMonitor::findRealRoot(std::string base);
These must be split into <base>/<top> and the mapping saved.
eg: addSharedDirectory("c:/home/stuff/dir1") --> "c:/home/stuff" <-> "dir1"
This code has been written already, and can just be moved over.
FOR LATER:
(2) Port File/Directory lookup code to windoze. (or compile dirent.c under windoze)
(3) Add Load/Store interface to FileIndexMonitor. (later)
(4) Integrate with real Thread/Mutex code (last thing to do)
******************************************************************************************/
/******************************************************************************************
* FileIndexMonitor
*****************************************************************************************/
class FileIndexMonitor: public CacheSource, public RsThread
{
public:
FileIndexMonitor(CacheStrapper *cs, std::string cachedir, std::string pid);
virtual ~FileIndexMonitor();
/* external interface for filetransfer */
bool findLocalFile(std::string hash, std::string &fullpath, uint64_t &size);
/* Interacting with CacheSource */
/* overloaded from CacheSource */
virtual bool loadLocalCache(const CacheData &data); /* called with stored data */
bool updateCache(const CacheData &data); /* we call when we have a new cache for others */
/* the FileIndexMonitor inner workings */
virtual void run(); /* overloaded from RsThread */
void updateCycle();
void setSharedDirectories(std::list<std::string> dirs);
void setPeriod(int insecs);
/* util fns */
private:
/* the mutex should be locked before calling... these. */
std::string findRealRoot(std::string base); /* To Implement */
bool hashFile(std::string path, FileEntry &fi); /* To Implement */
/* data */
RsMutex fiMutex;
FileIndex fi;
int updatePeriod;
std::map<std::string, std::string> directoryMap; /* used by findRealRoot */
/* flags to kick - if we were busy or sleeping */
bool pendingDirs;
bool pendingForceCacheWrite;
std::list<std::string> pendingDirList;
bool internal_setSharedDirectories();
};
#endif