MaxComputeMetadataCache.java

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.datasource.maxcompute;

import org.apache.doris.common.Config;
import org.apache.doris.datasource.TablePartitionValues;
import org.apache.doris.datasource.metacache.CacheSpec;

import com.github.benmanes.caffeine.cache.Cache;
import com.github.benmanes.caffeine.cache.Caffeine;
import com.github.benmanes.caffeine.cache.stats.CacheStats;

import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
import java.util.stream.Collectors;

public class MaxComputeMetadataCache {
    private final Cache<MaxComputeCacheKey, TablePartitionValues> partitionValuesCache;

    public MaxComputeMetadataCache(CacheSpec cacheSpec) {
        Caffeine<Object, Object> builder = Caffeine.newBuilder()
                .maximumSize(cacheSpec.getCapacity())
                .recordStats();
        if (cacheSpec.getTtlSecond() != CacheSpec.CACHE_NO_TTL) {
            builder.expireAfterAccess(Math.max(cacheSpec.getTtlSecond(), CacheSpec.CACHE_TTL_DISABLE_CACHE),
                    TimeUnit.SECONDS);
        }
        partitionValuesCache = builder.build();
    }

    public MaxComputeMetadataCache() {
        this(CacheSpec.fromUnifiedProperties(java.util.Collections.emptyMap(),
                MaxComputeEngineCache.ENGINE_TYPE, "partition-values", true,
                Config.external_cache_expire_time_seconds_after_access, Config.max_hive_partition_cache_num));
    }

    public TablePartitionValues getCachedPartitionValues(MaxComputeCacheKey tablePartitionKey,
            Function<? super MaxComputeCacheKey, ? extends TablePartitionValues> loader) {
        return partitionValuesCache.get(tablePartitionKey, loader);
    }

    public void cleanUp() {
        partitionValuesCache.invalidateAll();
    }

    public void cleanDatabaseCache(String dbName) {
        List<MaxComputeCacheKey> removeCacheList = partitionValuesCache.asMap().keySet()
                .stream()
                .filter(k -> k.getDbName().equalsIgnoreCase(dbName))
                .collect(Collectors.toList());
        partitionValuesCache.invalidateAll(removeCacheList);
    }

    public void cleanTableCache(String dbName, String tblName) {
        MaxComputeCacheKey cacheKey = new MaxComputeCacheKey(dbName, tblName);
        partitionValuesCache.invalidate(cacheKey);
    }

    public CacheStats getPartitionValuesCacheStats() {
        return partitionValuesCache.stats();
    }

    public long getPartitionValuesCacheEstimatedSize() {
        return partitionValuesCache.estimatedSize();
    }
}