// 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.

#include "olap/schema_cache.h"

#include <butil/logging.h>

#include <fmt/core.h>

#include <gen_cpp/Descriptors_types.h>

#include <glog/logging.h>

#include <memory>

#include <mutex>

#include <vector>

#include "common/config.h"

#include "olap/schema.h"

#include "olap/tablet.h"

#include "olap/tablet_schema.h"

#include "util/defer_op.h"

#include "util/time.h"

namespace doris {

SchemaCache* SchemaCache::instance() {

    return ExecEnv::GetInstance()->schema_cache();

}

// format: tabletId-unique_id1-uniqueid2...-version-type

std::string SchemaCache::get_schema_key(int64_t tablet_id, const std::vector<TColumn>& columns,

                                        int32_t version) {

    if (columns.empty() || columns[0].col_unique_id < 0) {

        return "";

    }

    std::string key = fmt::format("{}-", tablet_id);

    std::for_each(columns.begin(), columns.end(), [&](const TColumn& col) {

        key.append(fmt::format("{}", col.col_unique_id));

        key.append("-");

    });

    key.append(fmt::format("{}", version));

    return key;

}

} // namespace doris