|
|
|
@ -2,8 +2,8 @@
|
|
|
|
|
// Distributed under the MIT software license, see the accompanying
|
|
|
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
|
|
|
|
|
|
#ifndef BITCOIN_LEVELDBWRAPPER_H
|
|
|
|
|
#define BITCOIN_LEVELDBWRAPPER_H
|
|
|
|
|
#ifndef BITCOIN_DBWRAPPER_H
|
|
|
|
|
#define BITCOIN_DBWRAPPER_H
|
|
|
|
|
|
|
|
|
|
#include "clientversion.h"
|
|
|
|
|
#include "serialize.h"
|
|
|
|
@ -17,18 +17,18 @@
|
|
|
|
|
#include <leveldb/db.h>
|
|
|
|
|
#include <leveldb/write_batch.h>
|
|
|
|
|
|
|
|
|
|
class leveldb_error : public std::runtime_error
|
|
|
|
|
class dbwrapper_error : public std::runtime_error
|
|
|
|
|
{
|
|
|
|
|
public:
|
|
|
|
|
leveldb_error(const std::string& msg) : std::runtime_error(msg) {}
|
|
|
|
|
dbwrapper_error(const std::string& msg) : std::runtime_error(msg) {}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
void HandleError(const leveldb::Status& status) throw(leveldb_error);
|
|
|
|
|
void HandleError(const leveldb::Status& status) throw(dbwrapper_error);
|
|
|
|
|
|
|
|
|
|
/** Batch of changes queued to be written to a CLevelDBWrapper */
|
|
|
|
|
class CLevelDBBatch
|
|
|
|
|
/** Batch of changes queued to be written to a CDBWrapper */
|
|
|
|
|
class CDBBatch
|
|
|
|
|
{
|
|
|
|
|
friend class CLevelDBWrapper;
|
|
|
|
|
friend class CDBWrapper;
|
|
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
leveldb::WriteBatch batch;
|
|
|
|
@ -38,7 +38,7 @@ public:
|
|
|
|
|
/**
|
|
|
|
|
* @param[in] obfuscate_key If passed, XOR data with this key.
|
|
|
|
|
*/
|
|
|
|
|
CLevelDBBatch(const std::vector<unsigned char> *obfuscate_key) : obfuscate_key(obfuscate_key) { };
|
|
|
|
|
CDBBatch(const std::vector<unsigned char> *obfuscate_key) : obfuscate_key(obfuscate_key) { };
|
|
|
|
|
|
|
|
|
|
template <typename K, typename V>
|
|
|
|
|
void Write(const K& key, const V& value)
|
|
|
|
@ -68,8 +68,8 @@ public:
|
|
|
|
|
batch.Delete(slKey);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
class CLevelDBIterator
|
|
|
|
|
|
|
|
|
|
class CDBIterator
|
|
|
|
|
{
|
|
|
|
|
private:
|
|
|
|
|
leveldb::Iterator *piter;
|
|
|
|
@ -81,14 +81,13 @@ public:
|
|
|
|
|
* @param[in] piterIn The original leveldb iterator.
|
|
|
|
|
* @param[in] obfuscate_key If passed, XOR data with this key.
|
|
|
|
|
*/
|
|
|
|
|
CLevelDBIterator(leveldb::Iterator *piterIn, const std::vector<unsigned char>* obfuscate_key) :
|
|
|
|
|
CDBIterator(leveldb::Iterator *piterIn, const std::vector<unsigned char>* obfuscate_key) :
|
|
|
|
|
piter(piterIn), obfuscate_key(obfuscate_key) { };
|
|
|
|
|
~CLevelDBIterator();
|
|
|
|
|
~CDBIterator();
|
|
|
|
|
|
|
|
|
|
bool Valid();
|
|
|
|
|
|
|
|
|
|
void SeekToFirst();
|
|
|
|
|
void SeekToLast();
|
|
|
|
|
|
|
|
|
|
template<typename K> void Seek(const K& key) {
|
|
|
|
|
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
|
|
|
|
@ -99,7 +98,6 @@ public:
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void Next();
|
|
|
|
|
void Prev();
|
|
|
|
|
|
|
|
|
|
template<typename K> bool GetKey(K& key) {
|
|
|
|
|
leveldb::Slice slKey = piter->key();
|
|
|
|
@ -133,8 +131,8 @@ public:
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
class CLevelDBWrapper
|
|
|
|
|
|
|
|
|
|
class CDBWrapper
|
|
|
|
|
{
|
|
|
|
|
private:
|
|
|
|
|
//! custom environment this database is using (may be NULL in case of default environment)
|
|
|
|
@ -163,10 +161,10 @@ private:
|
|
|
|
|
|
|
|
|
|
//! the key under which the obfuscation key is stored
|
|
|
|
|
static const std::string OBFUSCATE_KEY_KEY;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//! the length of the obfuscate key in number of bytes
|
|
|
|
|
static const unsigned int OBFUSCATE_KEY_NUM_BYTES;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
std::vector<unsigned char> CreateObfuscateKey() const;
|
|
|
|
|
|
|
|
|
|
public:
|
|
|
|
@ -178,11 +176,11 @@ public:
|
|
|
|
|
* @param[in] obfuscate If true, store data obfuscated via simple XOR. If false, XOR
|
|
|
|
|
* with a zero'd byte array.
|
|
|
|
|
*/
|
|
|
|
|
CLevelDBWrapper(const boost::filesystem::path& path, size_t nCacheSize, bool fMemory = false, bool fWipe = false, bool obfuscate = false);
|
|
|
|
|
~CLevelDBWrapper();
|
|
|
|
|
CDBWrapper(const boost::filesystem::path& path, size_t nCacheSize, bool fMemory = false, bool fWipe = false, bool obfuscate = false);
|
|
|
|
|
~CDBWrapper();
|
|
|
|
|
|
|
|
|
|
template <typename K, typename V>
|
|
|
|
|
bool Read(const K& key, V& value) const throw(leveldb_error)
|
|
|
|
|
bool Read(const K& key, V& value) const throw(dbwrapper_error)
|
|
|
|
|
{
|
|
|
|
|
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
|
|
|
|
|
ssKey.reserve(ssKey.GetSerializeSize(key));
|
|
|
|
@ -208,15 +206,15 @@ public:
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
template <typename K, typename V>
|
|
|
|
|
bool Write(const K& key, const V& value, bool fSync = false) throw(leveldb_error)
|
|
|
|
|
bool Write(const K& key, const V& value, bool fSync = false) throw(dbwrapper_error)
|
|
|
|
|
{
|
|
|
|
|
CLevelDBBatch batch(&obfuscate_key);
|
|
|
|
|
CDBBatch batch(&obfuscate_key);
|
|
|
|
|
batch.Write(key, value);
|
|
|
|
|
return WriteBatch(batch, fSync);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
template <typename K>
|
|
|
|
|
bool Exists(const K& key) const throw(leveldb_error)
|
|
|
|
|
bool Exists(const K& key) const throw(dbwrapper_error)
|
|
|
|
|
{
|
|
|
|
|
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
|
|
|
|
|
ssKey.reserve(ssKey.GetSerializeSize(key));
|
|
|
|
@ -235,14 +233,14 @@ public:
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
template <typename K>
|
|
|
|
|
bool Erase(const K& key, bool fSync = false) throw(leveldb_error)
|
|
|
|
|
bool Erase(const K& key, bool fSync = false) throw(dbwrapper_error)
|
|
|
|
|
{
|
|
|
|
|
CLevelDBBatch batch(&obfuscate_key);
|
|
|
|
|
CDBBatch batch(&obfuscate_key);
|
|
|
|
|
batch.Erase(key);
|
|
|
|
|
return WriteBatch(batch, fSync);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bool WriteBatch(CLevelDBBatch& batch, bool fSync = false) throw(leveldb_error);
|
|
|
|
|
bool WriteBatch(CDBBatch& batch, bool fSync = false) throw(dbwrapper_error);
|
|
|
|
|
|
|
|
|
|
// not available for LevelDB; provide for compatibility with BDB
|
|
|
|
|
bool Flush()
|
|
|
|
@ -250,15 +248,15 @@ public:
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
bool Sync() throw(leveldb_error)
|
|
|
|
|
bool Sync() throw(dbwrapper_error)
|
|
|
|
|
{
|
|
|
|
|
CLevelDBBatch batch(&obfuscate_key);
|
|
|
|
|
CDBBatch batch(&obfuscate_key);
|
|
|
|
|
return WriteBatch(batch, true);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
CLevelDBIterator *NewIterator()
|
|
|
|
|
CDBIterator *NewIterator()
|
|
|
|
|
{
|
|
|
|
|
return new CLevelDBIterator(pdb->NewIterator(iteroptions), &obfuscate_key);
|
|
|
|
|
return new CDBIterator(pdb->NewIterator(iteroptions), &obfuscate_key);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@ -278,5 +276,5 @@ public:
|
|
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif // BITCOIN_LEVELDBWRAPPER_H
|
|
|
|
|
#endif // BITCOIN_DBWRAPPER_H
|
|
|
|
|
|