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/*
* Copyright (C) 2008-2018 TrinityCore <https://www.trinitycore.org/>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef UpdateFetcher_h__
#define UpdateFetcher_h__
#include "Define.h"
#include "DatabaseEnvFwd.h"
#include <set>
#include <string>
#include <unordered_map>
#include <vector>
namespace boost
{
namespace filesystem
{
class path;
}
}
struct TC_DATABASE_API UpdateResult
{
UpdateResult()
: updated(0), recent(0), archived(0) { }
UpdateResult(size_t const updated_, size_t const recent_, size_t const archived_)
: updated(updated_), recent(recent_), archived(archived_) { }
size_t updated;
size_t recent;
size_t archived;
};
class TC_DATABASE_API UpdateFetcher
{
typedef boost::filesystem::path Path;
public:
UpdateFetcher(Path const& updateDirectory,
std::function<void(std::string const&)> const& apply,
std::function<void(Path const& path)> const& applyFile,
std::function<QueryResult(std::string const&)> const& retrieve);
~UpdateFetcher();
UpdateResult Update(bool const redundancyChecks, bool const allowRehash,
bool const archivedRedundancy, int32 const cleanDeadReferencesMaxCount) const;
private:
enum UpdateMode
{
MODE_APPLY,
MODE_REHASH
};
enum State
{
RELEASED,
ARCHIVED
};
struct AppliedFileEntry
{
AppliedFileEntry(std::string const& name_, std::string const& hash_, State state_, uint64 timestamp_)
: name(name_), hash(hash_), state(state_), timestamp(timestamp_) { }
std::string const name;
std::string const hash;
State const state;
uint64 const timestamp;
static inline State StateConvert(std::string const& state)
{
return (state == "RELEASED") ? RELEASED : ARCHIVED;
}
static inline std::string StateConvert(State const state)
{
return (state == RELEASED) ? "RELEASED" : "ARCHIVED";
}
std::string GetStateAsString() const
{
return StateConvert(state);
}
};
struct DirectoryEntry;
typedef std::pair<Path, State> LocaleFileEntry;
struct PathCompare
{
bool operator()(LocaleFileEntry const& left, LocaleFileEntry const& right) const;
};
typedef std::set<LocaleFileEntry, PathCompare> LocaleFileStorage;
typedef std::unordered_map<std::string, std::string> HashToFileNameStorage;
typedef std::unordered_map<std::string, AppliedFileEntry> AppliedFileStorage;
typedef std::vector<UpdateFetcher::DirectoryEntry> DirectoryStorage;
LocaleFileStorage GetFileList() const;
void FillFileListRecursively(Path const& path, LocaleFileStorage& storage,
State const state, uint32 const depth) const;
DirectoryStorage ReceiveIncludedDirectories() const;
AppliedFileStorage ReceiveAppliedFiles() const;
std::string ReadSQLUpdate(Path const& file) const;
uint32 Apply(Path const& path) const;
void UpdateEntry(AppliedFileEntry const& entry, uint32 const speed = 0) const;
void RenameEntry(std::string const& from, std::string const& to) const;
void CleanUp(AppliedFileStorage const& storage) const;
void UpdateState(std::string const& name, State const state) const;
std::unique_ptr<Path> const _sourceDirectory;
std::function<void(std::string const&)> const _apply;
std::function<void(Path const& path)> const _applyFile;
std::function<QueryResult(std::string const&)> const _retrieve;
};
#endif // UpdateFetcher_h__
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