/*
 * 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 "paimon/common/io/cache/cache_manager.h"

namespace paimon {

Result<MemorySegment> CacheManager::GetPage(
    std::shared_ptr<CacheKey>& key,
    std::function<Result<MemorySegment>(const std::shared_ptr<CacheKey>&)> reader,
    CacheCallback eviction_callback) {
    auto& cache = key->IsIndex() ? index_cache_ : data_cache_;
    auto supplier =
        [&](const std::shared_ptr<CacheKey>& key) -> Result<std::shared_ptr<CacheValue>> {
        PAIMON_ASSIGN_OR_RAISE(MemorySegment segment, reader(key));
        return std::make_shared<CacheValue>(segment, std::move(eviction_callback));
    };
    PAIMON_ASSIGN_OR_RAISE(std::shared_ptr<CacheValue> cache_value, cache->Get(key, supplier));
    return cache_value->GetSegment();
}

void CacheManager::InvalidPage(const std::shared_ptr<CacheKey>& key) {
    if (key->IsIndex()) {
        index_cache_->Invalidate(key);
    } else {
        data_cache_->Invalidate(key);
    }
}

}  // namespace paimon