346 lines
12 KiB
Java
346 lines
12 KiB
Java
package it.cavallium.dbengine.database.disk;
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import static it.cavallium.dbengine.lucene.LuceneUtils.getLuceneIndexId;
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import static it.cavallium.dbengine.utils.StreamUtils.LUCENE_POOL;
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import static it.cavallium.dbengine.utils.StreamUtils.collectOn;
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import static it.cavallium.dbengine.utils.StreamUtils.executing;
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import static it.cavallium.dbengine.utils.StreamUtils.fastListing;
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import static it.cavallium.dbengine.utils.StreamUtils.fastReducing;
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import static it.cavallium.dbengine.utils.StreamUtils.fastSummingLong;
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import static it.cavallium.dbengine.utils.StreamUtils.partitionByInt;
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import static java.util.stream.Collectors.groupingBy;
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import com.google.common.collect.Multimap;
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import com.google.common.collect.Streams;
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import io.micrometer.core.instrument.MeterRegistry;
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import it.cavallium.dbengine.client.IBackuppable;
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import it.cavallium.dbengine.client.query.QueryParser;
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import it.cavallium.dbengine.client.query.current.data.Query;
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import it.cavallium.dbengine.client.query.current.data.QueryParams;
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import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
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import it.cavallium.dbengine.database.LLIndexRequest;
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import it.cavallium.dbengine.database.LLLuceneIndex;
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import it.cavallium.dbengine.database.LLSearchResultShard;
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import it.cavallium.dbengine.database.LLSnapshot;
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import it.cavallium.dbengine.database.LLSnapshottable;
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import it.cavallium.dbengine.database.LLTerm;
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import it.cavallium.dbengine.database.LLUpdateDocument;
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import it.cavallium.dbengine.database.SafeCloseable;
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import it.cavallium.dbengine.lucene.LuceneCloseable;
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import it.cavallium.dbengine.lucene.LuceneHacks;
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import it.cavallium.dbengine.lucene.LuceneUtils;
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import it.cavallium.dbengine.lucene.collector.Buckets;
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import it.cavallium.dbengine.lucene.mlt.MoreLikeThisTransformer;
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import it.cavallium.dbengine.lucene.searcher.AdaptiveMultiSearcher;
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import it.cavallium.dbengine.lucene.searcher.BucketParams;
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import it.cavallium.dbengine.lucene.searcher.DecimalBucketMultiSearcher;
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import it.cavallium.dbengine.lucene.searcher.GlobalQueryRewrite;
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import it.cavallium.dbengine.lucene.searcher.LocalQueryParams;
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import it.cavallium.dbengine.lucene.searcher.LuceneSearchResult;
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import it.cavallium.dbengine.lucene.searcher.MultiSearcher;
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import it.cavallium.dbengine.rpc.current.data.IndicizerAnalyzers;
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import it.cavallium.dbengine.rpc.current.data.IndicizerSimilarities;
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import it.cavallium.dbengine.rpc.current.data.LuceneOptions;
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import it.cavallium.dbengine.utils.DBException;
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import it.cavallium.dbengine.utils.SimpleResource;
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import it.cavallium.dbengine.utils.StreamUtils;
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import it.unimi.dsi.fastutil.ints.IntList;
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import java.io.Closeable;
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import java.io.IOException;
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import java.time.Duration;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map.Entry;
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import java.util.Objects;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.function.Function;
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import java.util.stream.Stream;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.apache.lucene.analysis.miscellaneous.PerFieldAnalyzerWrapper;
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import org.apache.lucene.search.similarities.PerFieldSimilarityWrapper;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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public class LLLocalMultiLuceneIndex extends SimpleResource implements LLLuceneIndex, LuceneCloseable {
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private static final Logger LOG = LogManager.getLogger(LLLuceneIndex.class);
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private final String clusterName;
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private final boolean lowMemory;
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private final MeterRegistry meterRegistry;
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private final ConcurrentHashMap<Long, List<LLSnapshot>> registeredSnapshots = new ConcurrentHashMap<>();
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private final AtomicLong nextSnapshotNumber = new AtomicLong(1);
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private final LLLocalLuceneIndex[] luceneIndicesById;
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private final List<LLLocalLuceneIndex> luceneIndicesSet;
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private final int totalShards;
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private final PerFieldAnalyzerWrapper luceneAnalyzer;
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private final PerFieldSimilarityWrapper luceneSimilarity;
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private final MultiSearcher multiSearcher;
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private final DecimalBucketMultiSearcher decimalBucketMultiSearcher = new DecimalBucketMultiSearcher();
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public LLLocalMultiLuceneIndex(MeterRegistry meterRegistry,
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String clusterName,
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IntList activeShards,
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int totalShards,
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IndicizerAnalyzers indicizerAnalyzers,
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IndicizerSimilarities indicizerSimilarities,
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LuceneOptions luceneOptions,
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@Nullable LuceneHacks luceneHacks) {
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if (totalShards <= 1 || totalShards > 100) {
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throw new DBException("Unsupported instances count: " + totalShards);
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}
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this.meterRegistry = meterRegistry;
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LLLocalLuceneIndex[] luceneIndices = new LLLocalLuceneIndex[totalShards];
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for (int i = 0; i < totalShards; i++) {
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if (!activeShards.contains(i)) {
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continue;
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}
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luceneIndices[i] = new LLLocalLuceneIndex(meterRegistry,
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clusterName,
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i,
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indicizerAnalyzers,
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indicizerSimilarities,
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luceneOptions,
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luceneHacks
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);
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}
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this.clusterName = clusterName;
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this.totalShards = totalShards;
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this.luceneIndicesById = luceneIndices;
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var luceneIndicesSet = new HashSet<LLLocalLuceneIndex>();
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for (var luceneIndex : luceneIndices) {
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if (luceneIndex != null) {
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luceneIndicesSet.add(luceneIndex);
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}
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}
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this.luceneIndicesSet = new ArrayList<>(luceneIndicesSet);
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this.luceneAnalyzer = LuceneUtils.toPerFieldAnalyzerWrapper(indicizerAnalyzers);
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this.luceneSimilarity = LuceneUtils.toPerFieldSimilarityWrapper(indicizerSimilarities);
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this.lowMemory = luceneOptions.lowMemory();
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var maxInMemoryResultEntries = luceneOptions.maxInMemoryResultEntries();
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if (luceneHacks != null && luceneHacks.customMultiSearcher() != null) {
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multiSearcher = luceneHacks.customMultiSearcher().get();
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} else {
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multiSearcher = new AdaptiveMultiSearcher(maxInMemoryResultEntries);
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}
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}
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private LLLocalLuceneIndex getLuceneIndex(LLTerm id) {
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return Objects.requireNonNull(luceneIndicesById[LuceneUtils.getLuceneIndexId(id, totalShards)]);
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}
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@Override
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public String getLuceneIndexName() {
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return clusterName;
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}
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private LLIndexSearchers getIndexSearchers(LLSnapshot snapshot) {
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// Resolve the snapshot of each shard
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return LLIndexSearchers.of(StreamUtils.toListOn(StreamUtils.LUCENE_POOL,
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Streams.mapWithIndex(this.luceneIndicesSet.stream(), (luceneIndex, index) -> {
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var subSnapshot = resolveSnapshot(snapshot, (int) index);
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return luceneIndex.retrieveSearcher(subSnapshot);
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})
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));
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}
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@Override
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public void addDocument(LLTerm id, LLUpdateDocument doc) {
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getLuceneIndex(id).addDocument(id, doc);
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}
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@Override
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public long addDocuments(boolean atomic, Stream<Entry<LLTerm, LLUpdateDocument>> documents) {
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return collectOn(LUCENE_POOL,
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partitionByInt(term -> getLuceneIndexId(term.getKey(), totalShards), documents)
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.map(entry -> luceneIndicesById[entry.key()].addDocuments(atomic, entry.values().stream())),
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fastSummingLong()
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);
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}
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@Override
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public void deleteDocument(LLTerm id) {
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getLuceneIndex(id).deleteDocument(id);
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}
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@Override
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public void update(LLTerm id, LLIndexRequest request) {
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getLuceneIndex(id).update(id, request);
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}
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@Override
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public long updateDocuments(Stream<Entry<LLTerm, LLUpdateDocument>> documents) {
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return collectOn(LUCENE_POOL,
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partitionByInt(term -> getLuceneIndexId(term.getKey(), totalShards), documents)
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.map(entry -> luceneIndicesById[entry.key()].updateDocuments(entry.values().stream())),
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fastSummingLong()
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);
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}
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@Override
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public void deleteAll() {
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luceneIndicesSet.forEach(LLLuceneIndex::deleteAll);
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}
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private LLSnapshot resolveSnapshot(LLSnapshot multiSnapshot, int instanceId) {
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if (multiSnapshot != null) {
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return registeredSnapshots.get(multiSnapshot.getSequenceNumber()).get(instanceId);
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} else {
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return null;
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}
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}
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@Override
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public Stream<LLSearchResultShard> moreLikeThis(@Nullable LLSnapshot snapshot,
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QueryParams queryParams,
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String keyFieldName,
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Multimap<String, String> mltDocumentFields) {
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LocalQueryParams localQueryParams = LuceneUtils.toLocalQueryParams(queryParams, luceneAnalyzer);
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try (var searchers = this.getIndexSearchers(snapshot)) {
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var transformer = new MoreLikeThisTransformer(mltDocumentFields, luceneAnalyzer, luceneSimilarity);
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// Collect all the shards results into a single global result
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LuceneSearchResult result = multiSearcher.collectMulti(searchers,
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localQueryParams,
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keyFieldName,
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transformer,
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Function.identity()
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);
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// Transform the result type
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return Stream.of(new LLSearchResultShard(result.results(), result.totalHitsCount()));
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}
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}
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@Override
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public Stream<LLSearchResultShard> search(@Nullable LLSnapshot snapshot,
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QueryParams queryParams,
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@Nullable String keyFieldName) {
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LuceneSearchResult result = searchInternal(snapshot, queryParams, keyFieldName);
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// Transform the result type
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var shard = new LLSearchResultShard(result.results(), result.totalHitsCount());
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return Stream.of(shard);
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}
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private LuceneSearchResult searchInternal(@Nullable LLSnapshot snapshot,
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QueryParams queryParams,
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@Nullable String keyFieldName) {
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LocalQueryParams localQueryParams = LuceneUtils.toLocalQueryParams(queryParams, luceneAnalyzer);
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try (var searchers = getIndexSearchers(snapshot)) {
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// Collect all the shards results into a single global result
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return multiSearcher.collectMulti(searchers,
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localQueryParams,
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keyFieldName,
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GlobalQueryRewrite.NO_REWRITE,
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Function.identity()
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);
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}
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}
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@Override
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public TotalHitsCount count(@Nullable LLSnapshot snapshot, Query query, @Nullable Duration timeout) {
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var params = LuceneUtils.getCountQueryParams(query);
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var result = this.searchInternal(snapshot, params, null);
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return result != null ? result.totalHitsCount() : TotalHitsCount.of(0, true);
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}
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@Override
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public Buckets computeBuckets(@Nullable LLSnapshot snapshot,
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@NotNull List<Query> queries,
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@Nullable Query normalizationQuery,
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BucketParams bucketParams) {
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List<org.apache.lucene.search.Query> localQueries = new ArrayList<>(queries.size());
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for (Query query : queries) {
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localQueries.add(QueryParser.toQuery(query, luceneAnalyzer));
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}
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var localNormalizationQuery = QueryParser.toQuery(normalizationQuery, luceneAnalyzer);
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try (var searchers = getIndexSearchers(snapshot)) {
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// Collect all the shards results into a single global result
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return decimalBucketMultiSearcher.collectMulti(searchers, bucketParams, localQueries, localNormalizationQuery);
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}
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}
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@Override
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protected void onClose() {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(SafeCloseable::close));
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if (multiSearcher instanceof Closeable closeable) {
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try {
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closeable.close();
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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@Override
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public void flush() {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(LLLuceneIndex::flush));
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}
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@Override
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public void waitForMerges() {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(LLLuceneIndex::waitForMerges));
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}
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@Override
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public void waitForLastMerges() {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(LLLuceneIndex::waitForLastMerges));
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}
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@Override
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public void refresh(boolean force) {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(index -> index.refresh(force)));
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}
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@Override
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public LLSnapshot takeSnapshot() {
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// Generate next snapshot index
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var snapshotIndex = nextSnapshotNumber.getAndIncrement();
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var snapshot = collectOn(StreamUtils.LUCENE_POOL,
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luceneIndicesSet.stream().map(LLSnapshottable::takeSnapshot),
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fastListing()
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);
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registeredSnapshots.put(snapshotIndex, snapshot);
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return new LLSnapshot(snapshotIndex);
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}
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@Override
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public void releaseSnapshot(LLSnapshot snapshot) {
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var list = registeredSnapshots.remove(snapshot.getSequenceNumber());
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for (int shardIndex = 0; shardIndex < list.size(); shardIndex++) {
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var luceneIndex = luceneIndicesSet.get(shardIndex);
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LLSnapshot instanceSnapshot = list.get(shardIndex);
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luceneIndex.releaseSnapshot(instanceSnapshot);
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}
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}
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@Override
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public boolean isLowMemoryMode() {
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return lowMemory;
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}
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@Override
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public void pauseForBackup() {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(LLLuceneIndex::pauseForBackup));
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}
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@Override
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public void resumeAfterBackup() {
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collectOn(StreamUtils.LUCENE_POOL, luceneIndicesSet.stream(), executing(LLLuceneIndex::resumeAfterBackup));
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}
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@Override
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public boolean isPaused() {
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return this.luceneIndicesSet.stream().anyMatch(IBackuppable::isPaused);
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}
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}
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