| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_LEDGER_BIN_STORAGE_IMPL_LEVELDB_H_ |
| #define SRC_LEDGER_BIN_STORAGE_IMPL_LEVELDB_H_ |
| |
| #include <lib/async/dispatcher.h> |
| |
| #include <utility> |
| |
| #include "leveldb/db.h" |
| #include "leveldb/write_batch.h" |
| #include "src/ledger/bin/filesystem/detached_path.h" |
| #include "src/ledger/bin/storage/public/db.h" |
| |
| namespace storage { |
| |
| class LevelDb : public Db { |
| public: |
| explicit LevelDb(async_dispatcher_t* dispatcher, |
| ledger::DetachedPath db_path); |
| |
| ~LevelDb() override; |
| |
| Status Init(); |
| |
| // Db: |
| Status StartBatch(coroutine::CoroutineHandler* handler, |
| std::unique_ptr<Batch>* batch) override; |
| Status Get(coroutine::CoroutineHandler* handler, |
| convert::ExtendedStringView key, std::string* value) override; |
| Status HasKey(coroutine::CoroutineHandler* handler, |
| convert::ExtendedStringView key) override; |
| Status GetObject(coroutine::CoroutineHandler* handler, |
| convert::ExtendedStringView key, |
| ObjectIdentifier object_identifier, |
| std::unique_ptr<const Piece>* piece) override; |
| Status GetByPrefix(coroutine::CoroutineHandler* handler, |
| convert::ExtendedStringView prefix, |
| std::vector<std::string>* key_suffixes) override; |
| Status GetEntriesByPrefix( |
| coroutine::CoroutineHandler* handler, convert::ExtendedStringView prefix, |
| std::vector<std::pair<std::string, std::string>>* entries) override; |
| Status GetIteratorAtPrefix( |
| coroutine::CoroutineHandler* handler, convert::ExtendedStringView prefix, |
| std::unique_ptr<Iterator<const std::pair<convert::ExtendedStringView, |
| convert::ExtendedStringView>>>* |
| iterator) override; |
| |
| private: |
| async_dispatcher_t* const dispatcher_; |
| const ledger::DetachedPath db_path_; |
| std::unique_ptr<leveldb::Env> env_; |
| std::unique_ptr<leveldb::DB> db_; |
| |
| const leveldb::WriteOptions write_options_; |
| const leveldb::ReadOptions read_options_; |
| |
| uint64_t active_batches_count_ = 0; |
| |
| FXL_DISALLOW_COPY_AND_ASSIGN(LevelDb); |
| }; |
| |
| } // namespace storage |
| |
| #endif // SRC_LEDGER_BIN_STORAGE_IMPL_LEVELDB_H_ |