extensions/rocksdb-repos/RocksDbRepository.h

/**
 * 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 <utility>
#include <vector>
#include <string>
#include <string_view>
#include <memory>

#include "database/RocksDatabase.h"
#include "core/ThreadedRepository.h"

namespace org::apache::nifi::minifi::core::repository {

constexpr auto FLOWFILE_REPOSITORY_RETRY_INTERVAL_INCREMENTS = std::chrono::milliseconds(500);

class RocksDbRepository : public ThreadedRepositoryImpl {
 public:
  RocksDbRepository(std::string_view repo_name,
                    std::string directory,
                    std::chrono::milliseconds max_partition_millis,
                    int64_t max_partition_bytes,
                    std::chrono::milliseconds purge_period,
                    std::shared_ptr<logging::Logger> logger)
    : ThreadedRepositoryImpl(repo_name, std::move(directory), max_partition_millis, max_partition_bytes, purge_period),
      logger_(std::move(logger)) {
  }

  bool Put(const std::string& key, const uint8_t *buf, size_t bufLen) override;
  bool MultiPut(const std::vector<std::pair<std::string, std::unique_ptr<minifi::io::BufferStream>>>& data) override;
  bool Get(const std::string &key, std::string &value) override;

  uint64_t getRepositorySize() const override;
  uint64_t getRepositoryEntryCount() const override;
  std::optional<RocksDbStats> getRocksDbStats() const override;

 protected:
  bool ExecuteWithRetry(const std::function<rocksdb::Status()>& operation);

  std::thread& getThread() override {
    return thread_;
  }

  std::unique_ptr<minifi::internal::RocksDatabase> db_;
  std::shared_ptr<logging::Logger> logger_;
  std::thread thread_;
  bool verify_checksums_in_rocksdb_reads_ = false;
};

}  // namespace org::apache::nifi::minifi::core::repository