mirror of https://gitee.com/bigwinds/arangodb
140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014-2017 ArangoDB GmbH, Cologne, Germany
|
|
/// Copyright 2004-2014 triAGENS 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 Daniel H. Larkin
|
|
/// @author Jan Steemann
|
|
/// @author Jan Christoph Uhde
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGO_ROCKSDB_ROCKSDB_COMMON_H
|
|
#define ARANGO_ROCKSDB_ROCKSDB_COMMON_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
#include "Basics/Result.h"
|
|
#include "RocksDBEngine/RocksDBComparator.h"
|
|
#include "RocksDBEngine/RocksDBEngine.h"
|
|
#include "RocksDBEngine/RocksDBKey.h"
|
|
#include "RocksDBEngine/RocksDBKeyBounds.h"
|
|
#include "RocksDBEngine/RocksDBValue.h"
|
|
|
|
#include <rocksdb/iterator.h>
|
|
#include <rocksdb/options.h>
|
|
#include <rocksdb/status.h>
|
|
|
|
namespace rocksdb {
|
|
class TransactionDB;
|
|
class DB;
|
|
struct ReadOptions;
|
|
class Comparator;
|
|
}
|
|
|
|
namespace arangodb {
|
|
|
|
class RocksDBOperationResult : public Result {
|
|
public:
|
|
RocksDBOperationResult() : Result(), _keySize(0), _commitRequired(false) {}
|
|
|
|
RocksDBOperationResult(Result const& other)
|
|
: _keySize(0), _commitRequired(false) {
|
|
cloneData(other);
|
|
}
|
|
|
|
RocksDBOperationResult(Result&& other) : _keySize(0), _commitRequired(false) {
|
|
cloneData(std::move(other));
|
|
}
|
|
|
|
uint64_t keySize() const { return _keySize; }
|
|
void keySize(uint64_t s) { _keySize = s; }
|
|
|
|
bool commitRequired() const { return _commitRequired; }
|
|
void commitRequired(bool cr) { _commitRequired = cr; }
|
|
|
|
protected:
|
|
uint64_t _keySize;
|
|
bool _commitRequired;
|
|
};
|
|
|
|
class TransactionState;
|
|
class RocksDBTransactionState;
|
|
class RocksDBKeyBounds;
|
|
class RocksDBEngine;
|
|
namespace transaction {
|
|
class Methods;
|
|
}
|
|
namespace rocksutils {
|
|
|
|
enum StatusHint { none, document, collection, view, index, database };
|
|
|
|
arangodb::Result convertStatus(rocksdb::Status const&,
|
|
StatusHint hint = StatusHint::none);
|
|
|
|
uint64_t uint64FromPersistent(char const* p);
|
|
void uint64ToPersistent(char* p, uint64_t value);
|
|
void uint64ToPersistent(std::string& out, uint64_t value);
|
|
RocksDBTransactionState* toRocksTransactionState(transaction::Methods* trx);
|
|
rocksdb::TransactionDB* globalRocksDB();
|
|
RocksDBEngine* globalRocksEngine();
|
|
arangodb::Result globalRocksDBPut(
|
|
rocksdb::Slice const& key, rocksdb::Slice const& value,
|
|
rocksdb::WriteOptions const& = rocksdb::WriteOptions{});
|
|
|
|
arangodb::Result globalRocksDBRemove(
|
|
rocksdb::Slice const& key,
|
|
rocksdb::WriteOptions const& = rocksdb::WriteOptions{});
|
|
|
|
uint64_t latestSequenceNumber();
|
|
|
|
void addCollectionMapping(uint64_t, TRI_voc_tick_t, TRI_voc_cid_t);
|
|
std::pair<TRI_voc_tick_t, TRI_voc_cid_t> mapObjectToCollection(uint64_t);
|
|
|
|
/// Iterator over all keys in range and count them
|
|
std::size_t countKeyRange(rocksdb::DB*, rocksdb::ReadOptions const&,
|
|
RocksDBKeyBounds const&);
|
|
|
|
/// @brief helper method to remove large ranges of data
|
|
/// Should mainly be used to implement the drop() call
|
|
Result removeLargeRange(rocksdb::TransactionDB* db,
|
|
RocksDBKeyBounds const& bounds);
|
|
|
|
std::vector<std::pair<RocksDBKey, RocksDBValue>> collectionKVPairs(
|
|
TRI_voc_tick_t databaseId);
|
|
std::vector<std::pair<RocksDBKey, RocksDBValue>> viewKVPairs(
|
|
TRI_voc_tick_t databaseId);
|
|
|
|
// optional switch to std::function to reduce amount of includes and to avoid
|
|
// template
|
|
// this helper is not meant for transactional usage!
|
|
template <typename T> // T is a invokeable that takes a rocksdb::Iterator*
|
|
void iterateBounds(
|
|
RocksDBKeyBounds const& bounds, T callback,
|
|
rocksdb::ReadOptions const& options = rocksdb::ReadOptions{}) {
|
|
auto cmp = globalRocksEngine()->cmp();
|
|
std::unique_ptr<rocksdb::Iterator> it(globalRocksDB()->NewIterator(options));
|
|
for (it->Seek(bounds.start());
|
|
it->Valid() && cmp->Compare(it->key(), bounds.end()) < 0; it->Next()) {
|
|
callback(it.get());
|
|
}
|
|
}
|
|
|
|
} // namespace rocksutils
|
|
} // namespace arangodb
|
|
|
|
#endif
|