// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
//
// 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.

#include "kvdb/paddle_rocksdb.h"

RocksDBWrapper::RocksDBWrapper(std::string db_name) {
    rocksdb::Options options;
    options.create_if_missing = true;
    db_name_ = db_name;
    db_ = nullptr;
    rocksdb::Status s = rocksdb::DB::Open(options, db_name, &db_);
    return;
}

std::string RocksDBWrapper::Get(std::string key) {
    rocksdb::ReadOptions options;
    options.verify_checksums = true;
    std::string result;
    rocksdb::Status s = db_->Get(options, key, &result);
    if (s.IsNotFound()) {
        result = "NOT_FOUND";
    }
    return result;
}

bool RocksDBWrapper::Put(std::string key, std::string value) {
    rocksdb::WriteOptions options;
    rocksdb::Status s = db_->Put(options, key, value);
    if (s.ok()) {
        return true;
    } else {
        return false;
    }
}

void RocksDBWrapper::SetDBName(std::string db_name) {
    this->db_name_ = db_name;
}

std::shared_ptr<RocksDBWrapper> RocksDBWrapper::RocksDBWrapperFactory(std::string db_name) {
    return std::make_shared<RocksDBWrapper>(db_name);
}