mirror of https://gitee.com/bigwinds/arangodb
109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// Licensed under the Apache License, Version 2.0 (the "License");
|
|
/// you may not use this file except in compliance with the License.
|
|
/// You may obtain a copy of the License at
|
|
///
|
|
/// http://www.apache.org/licenses/LICENSE-2.0
|
|
///
|
|
/// Unless required by applicable law or agreed to in writing, software
|
|
/// distributed under the License is distributed on an "AS IS" BASIS,
|
|
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
/// See the License for the specific language governing permissions and
|
|
/// limitations under the License.
|
|
///
|
|
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// @author Simon Grätzer
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "RocksDBFormat.h"
|
|
|
|
#include "Logger/Logger.h"
|
|
|
|
namespace {
|
|
// little endian
|
|
inline uint16_t uint16FromPersistentLE(char const* p) {
|
|
return arangodb::rocksutils::uintFromPersistentLittleEndian<uint16_t>(p);
|
|
}
|
|
inline uint32_t uint32FromPersistentLE(char const* p) {
|
|
return arangodb::rocksutils::uintFromPersistentLittleEndian<uint32_t>(p);
|
|
}
|
|
inline uint64_t uint64FromPersistentLE(char const* p) {
|
|
return arangodb::rocksutils::uintFromPersistentLittleEndian<uint64_t>(p);
|
|
}
|
|
inline void uint16ToPersistentLE(std::string& p, uint16_t value) {
|
|
arangodb::rocksutils::uintToPersistentLittleEndian<uint16_t>(p, value);
|
|
}
|
|
inline void uint32ToPersistentLE(std::string& p, uint32_t value) {
|
|
arangodb::rocksutils::uintToPersistentLittleEndian<uint32_t>(p, value);
|
|
}
|
|
inline void uint64ToPersistentLE(std::string& p, uint64_t value) {
|
|
arangodb::rocksutils::uintToPersistentLittleEndian<uint64_t>(p, value);
|
|
}
|
|
// Big endian
|
|
inline uint16_t uint16FromPersistentBE(char const* p) {
|
|
return arangodb::rocksutils::uintFromPersistentBigEndian<uint16_t>(p);
|
|
}
|
|
inline uint32_t uint32FromPersistentBE(char const* p) {
|
|
return arangodb::rocksutils::uintFromPersistentBigEndian<uint32_t>(p);
|
|
}
|
|
inline uint64_t uint64FromPersistentBE(char const* p) {
|
|
return arangodb::rocksutils::uintFromPersistentBigEndian<uint64_t>(p);
|
|
}
|
|
inline void uint16ToPersistentBE(std::string& p, uint16_t value) {
|
|
arangodb::rocksutils::uintToPersistentBigEndian<uint16_t>(p, value);
|
|
}
|
|
inline void uint32ToPersistentBE(std::string& p, uint32_t value) {
|
|
arangodb::rocksutils::uintToPersistentBigEndian<uint32_t>(p, value);
|
|
}
|
|
inline void uint64ToPersistentBE(std::string& p, uint64_t value) {
|
|
arangodb::rocksutils::uintToPersistentBigEndian<uint64_t>(p, value);
|
|
}
|
|
} // namespace
|
|
|
|
namespace arangodb {
|
|
namespace rocksutils {
|
|
|
|
RocksDBEndianness rocksDBEndianness = RocksDBEndianness::Invalid;
|
|
|
|
uint16_t (*uint16FromPersistent)(char const* p) = nullptr;
|
|
uint32_t (*uint32FromPersistent)(char const* p) = nullptr;
|
|
uint64_t (*uint64FromPersistent)(char const* p) = nullptr;
|
|
|
|
void (*uint16ToPersistent)(std::string& p, uint16_t value) = nullptr;
|
|
void (*uint32ToPersistent)(std::string& p, uint32_t value) = nullptr;
|
|
void (*uint64ToPersistent)(std::string& p, uint64_t value) = nullptr;
|
|
|
|
void setRocksDBKeyFormatEndianess(RocksDBEndianness e) {
|
|
rocksDBEndianness = e;
|
|
|
|
if (e == RocksDBEndianness::Little) {
|
|
LOG_TOPIC("799b9", DEBUG, Logger::ENGINES) << "using little-endian keys";
|
|
uint16FromPersistent = &uint16FromPersistentLE;
|
|
uint32FromPersistent = &uint32FromPersistentLE;
|
|
uint64FromPersistent = &uint64FromPersistentLE;
|
|
uint16ToPersistent = &uint16ToPersistentLE;
|
|
uint32ToPersistent = &uint32ToPersistentLE;
|
|
uint64ToPersistent = &uint64ToPersistentLE;
|
|
return;
|
|
} else if (e == RocksDBEndianness::Big) {
|
|
LOG_TOPIC("5e446", DEBUG, Logger::ENGINES) << "using big-endian keys";
|
|
uint16FromPersistent = &uint16FromPersistentBE;
|
|
uint32FromPersistent = &uint32FromPersistentBE;
|
|
uint64FromPersistent = &uint64FromPersistentBE;
|
|
uint16ToPersistent = &uint16ToPersistentBE;
|
|
uint32ToPersistent = &uint32ToPersistentBE;
|
|
uint64ToPersistent = &uint64ToPersistentBE;
|
|
return;
|
|
}
|
|
LOG_TOPIC("b8243", FATAL, Logger::ENGINES) << "Invalid key endianness";
|
|
FATAL_ERROR_EXIT();
|
|
}
|
|
|
|
} // namespace rocksutils
|
|
} // namespace arangodb
|