mirror of https://github.com/vitalif/zbackup
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
// Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org> and ZBackup contributors, see CONTRIBUTORS
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// Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE
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#ifndef BACKUP_RESTORER_HH_INCLUDED
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#define BACKUP_RESTORER_HH_INCLUDED
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#include <stddef.h>
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#include <exception>
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#include <string>
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#include <set>
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#undef __DEPRECATED
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#include <ext/hash_map>
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#include "chunk_storage.hh"
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#include "ex.hh"
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/// Generic interface to stream data out
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class DataSink
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{
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public:
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virtual void saveData( void const * data, size_t size )=0;
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virtual ~DataSink() {}
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};
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/// Generic interface to seekable data output
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class SeekableSink
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{
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public:
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virtual void saveData( int64_t position, void const * data, size_t size )=0;
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};
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namespace __gnu_cxx
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{
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template<>
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struct hash< Bundle::Id >
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{
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size_t operator()( Bundle::Id v ) const
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{ return *((size_t*)(v.blob)); }
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};
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}
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/// Restores the backup
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namespace BackupRestorer {
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DEF_EX( Ex, "Backup restorer exception", std::exception )
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DEF_EX( exTooManyBytesToEmit, "A backup record asks to emit too many bytes", Ex )
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DEF_EX( exBytesToMap, "Can't restore bytes to ChunkMap", Ex )
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typedef std::set< ChunkId > ChunkSet;
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typedef std::vector< std::pair < ChunkId, int64_t > > ChunkPosition;
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typedef __gnu_cxx::hash_map< Bundle::Id, ChunkPosition > ChunkMap;
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/// Restores the given backup
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void restore( ChunkStorage::Reader &, std::string const & backupData,
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DataSink *, ChunkSet *, ChunkMap *, SeekableSink * );
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/// Restores ChunkMap using seekable output
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void restoreMap( ChunkStorage::Reader & chunkStorageReader,
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ChunkMap const * chunkMap, SeekableSink *output );
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/// Performs restore iterations on backupData
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void restoreIterations( ChunkStorage::Reader &, BackupInfo &, std::string &, ChunkSet * );
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}
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#endif
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