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olap_meta.h
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/
olap_meta.h
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// This file is made available under Elastic License 2.0.
// This file is based on code available under the Apache license here:
// https://github.com/apache/incubator-doris/blob/master/be/src/olap/olap_meta.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.
#ifndef STARROCKS_BE_SRC_OLAP_OLAP_OLAP_META_H
#define STARROCKS_BE_SRC_OLAP_OLAP_OLAP_META_H
#include <rocksdb/write_batch.h>
#include <functional>
#include <map>
#include <string>
#include <string_view>
#include "common/status.h"
#include "storage/olap_common.h"
namespace rocksdb {
class DB;
class ColumnFamilyHandle;
} // namespace rocksdb
namespace starrocks {
using ColumnFamilyHandle = rocksdb::ColumnFamilyHandle;
using WriteBatch = rocksdb::WriteBatch;
class OlapMeta {
public:
explicit OlapMeta(std::string root_path);
virtual ~OlapMeta();
Status init(bool read_only = false);
Status get(ColumnFamilyIndex column_family_index, const std::string& key, std::string* value);
Status put(ColumnFamilyIndex column_family_index, const std::string& key, const std::string& value);
Status write_batch(WriteBatch* batch);
Status remove(ColumnFamilyIndex column_family_index, const std::string& key);
Status iterate(ColumnFamilyIndex column_family_index, const std::string& prefix,
std::function<bool(std::string_view, std::string_view)> const& func);
Status iterate_range(ColumnFamilyIndex column_family_index, const std::string& lower_bound,
const std::string& upper_bound,
std::function<bool(std::string_view, std::string_view)> const& func);
std::string get_root_path();
ColumnFamilyHandle* handle(ColumnFamilyIndex column_family_index) { return _handles[column_family_index]; }
private:
std::string _root_path;
rocksdb::DB* _db;
std::vector<rocksdb::ColumnFamilyHandle*> _handles;
};
} // namespace starrocks
#endif // STARROCKS_BE_SRC_OLAP_OLAP_OLAP_META_H