| /** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| #pragma once |
| |
| #include <mutex> |
| |
| #include "utils/OptionalUtils.h" |
| #include "rocksdb/db.h" |
| #include "rocksdb/options.h" |
| #include "rocksdb/slice.h" |
| #include "rocksdb/utilities/checkpoint.h" |
| #include "logging/Logger.h" |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace internal { |
| |
| class RocksDatabase; |
| |
| // Not thread safe |
| class OpenRocksDB { |
| friend class RocksDatabase; |
| |
| OpenRocksDB(RocksDatabase& db, gsl::not_null<std::shared_ptr<rocksdb::DB>> impl); |
| |
| public: |
| OpenRocksDB(const OpenRocksDB&) = delete; |
| OpenRocksDB(OpenRocksDB&&) noexcept = default; |
| OpenRocksDB& operator=(const OpenRocksDB&) = delete; |
| OpenRocksDB& operator=(OpenRocksDB&&) = default; |
| |
| rocksdb::Status Put(const rocksdb::WriteOptions& options, const rocksdb::Slice& key, const rocksdb::Slice& value); |
| |
| rocksdb::Status Get(const rocksdb::ReadOptions& options, const rocksdb::Slice& key, std::string* value); |
| |
| std::vector<rocksdb::Status> MultiGet(const rocksdb::ReadOptions& options, const std::vector<rocksdb::Slice>& keys, std::vector<std::string>* values); |
| |
| rocksdb::Status Write(const rocksdb::WriteOptions& options, rocksdb::WriteBatch* updates); |
| |
| rocksdb::Status Delete(const rocksdb::WriteOptions& options, const rocksdb::Slice& key); |
| |
| rocksdb::Status Merge(const rocksdb::WriteOptions& options, const rocksdb::Slice& key, const rocksdb::Slice& value); |
| |
| bool GetProperty(const rocksdb::Slice& property, std::string* value); |
| |
| std::unique_ptr<rocksdb::Iterator> NewIterator(const rocksdb::ReadOptions& options); |
| |
| rocksdb::Status NewCheckpoint(rocksdb::Checkpoint** checkpoint); |
| |
| rocksdb::Status FlushWAL(bool sync); |
| |
| rocksdb::DB* get(); |
| |
| private: |
| gsl::not_null<RocksDatabase*> db_; |
| gsl::not_null<std::shared_ptr<rocksdb::DB>> impl_; |
| }; |
| |
| class RocksDatabase { |
| friend class OpenRocksDB; |
| |
| public: |
| enum class Mode { |
| ReadOnly, |
| ReadWrite |
| }; |
| |
| RocksDatabase(const rocksdb::Options& options, const std::string& name, Mode mode = Mode::ReadWrite); |
| |
| utils::optional<OpenRocksDB> open(); |
| |
| private: |
| /* |
| * notify RocksDatabase that the next open should check if they can reopen the database |
| * until a successful reopen no more open is possible |
| */ |
| void invalidate(); |
| |
| const rocksdb::Options open_options_; |
| const std::string db_name_; |
| const Mode mode_; |
| |
| std::mutex mtx_; |
| std::shared_ptr<rocksdb::DB> impl_; |
| |
| static std::shared_ptr<core::logging::Logger> logger_; |
| }; |
| |
| } /* namespace internal */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |