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Update codecs to Apache Lucene 9.12.0
Signed-off-by: Andriy Redko <andriy.redko@aiven.io>
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140 changes: 140 additions & 0 deletions
140
src/main/java/org/opensearch/index/codec/customcodecs/Lucene912CustomStoredFieldsFormat.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,140 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
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| package org.opensearch.index.codec.customcodecs; | ||
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| import org.apache.lucene.codecs.StoredFieldsFormat; | ||
| import org.apache.lucene.codecs.StoredFieldsReader; | ||
| import org.apache.lucene.codecs.StoredFieldsWriter; | ||
| import org.apache.lucene.codecs.compressing.CompressionMode; | ||
| import org.apache.lucene.codecs.lucene90.compressing.Lucene90CompressingStoredFieldsFormat; | ||
| import org.apache.lucene.index.FieldInfos; | ||
| import org.apache.lucene.index.SegmentInfo; | ||
| import org.apache.lucene.store.Directory; | ||
| import org.apache.lucene.store.IOContext; | ||
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| import java.io.IOException; | ||
| import java.util.Objects; | ||
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| import static org.opensearch.index.codec.customcodecs.backward_codecs.lucene99.Lucene99CustomCodec.DEFAULT_COMPRESSION_LEVEL; | ||
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| /** Stored field format used by pluggable codec */ | ||
| public class Lucene912CustomStoredFieldsFormat extends StoredFieldsFormat { | ||
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| /** A key that we use to map to a mode */ | ||
| public static final String MODE_KEY = Lucene912CustomStoredFieldsFormat.class.getSimpleName() + ".mode"; | ||
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| protected static final int ZSTD_BLOCK_LENGTH = 10 * 48 * 1024; | ||
| protected static final int ZSTD_MAX_DOCS_PER_BLOCK = 4096; | ||
| protected static final int ZSTD_BLOCK_SHIFT = 10; | ||
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| private final CompressionMode zstdCompressionMode; | ||
| private final CompressionMode zstdNoDictCompressionMode; | ||
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| private final Lucene912CustomCodec.Mode mode; | ||
| private final int compressionLevel; | ||
|
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| /** default constructor */ | ||
| public Lucene912CustomStoredFieldsFormat() { | ||
| this(Lucene912CustomCodec.Mode.ZSTD, DEFAULT_COMPRESSION_LEVEL); | ||
| } | ||
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| /** | ||
| * Creates a new instance. | ||
| * | ||
| * @param mode The mode represents ZSTD or ZSTDNODICT | ||
| */ | ||
| public Lucene912CustomStoredFieldsFormat(Lucene912CustomCodec.Mode mode) { | ||
| this(mode, DEFAULT_COMPRESSION_LEVEL); | ||
| } | ||
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| /** | ||
| * Creates a new instance with the specified mode and compression level. | ||
| * | ||
| * @param mode The mode represents ZSTD or ZSTDNODICT | ||
| * @param compressionLevel The compression level for the mode. | ||
| */ | ||
| public Lucene912CustomStoredFieldsFormat(Lucene912CustomCodec.Mode mode, int compressionLevel) { | ||
| this.mode = Objects.requireNonNull(mode); | ||
| this.compressionLevel = compressionLevel; | ||
| zstdCompressionMode = new ZstdCompressionMode(compressionLevel); | ||
| zstdNoDictCompressionMode = new ZstdNoDictCompressionMode(compressionLevel); | ||
| } | ||
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| /** | ||
| * Returns a {@link StoredFieldsReader} to load stored fields. | ||
| * @param directory The index directory. | ||
| * @param si The SegmentInfo that stores segment information. | ||
| * @param fn The fieldInfos. | ||
| * @param context The IOContext that holds additional details on the merge/search context. | ||
| */ | ||
| @Override | ||
| public StoredFieldsReader fieldsReader(Directory directory, SegmentInfo si, FieldInfos fn, IOContext context) throws IOException { | ||
| if (si.getAttribute(MODE_KEY) != null) { | ||
| String value = si.getAttribute(MODE_KEY); | ||
| Lucene912CustomCodec.Mode mode = Lucene912CustomCodec.Mode.valueOf(value); | ||
| return impl(mode).fieldsReader(directory, si, fn, context); | ||
| } else { | ||
| throw new IllegalStateException("missing value for " + MODE_KEY + " for segment: " + si.name); | ||
| } | ||
| } | ||
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| /** | ||
| * Returns a {@link StoredFieldsReader} to write stored fields. | ||
| * @param directory The index directory. | ||
| * @param si The SegmentInfo that stores segment information. | ||
| * @param context The IOContext that holds additional details on the merge/search context. | ||
| */ | ||
| @Override | ||
| public StoredFieldsWriter fieldsWriter(Directory directory, SegmentInfo si, IOContext context) throws IOException { | ||
| String previous = si.putAttribute(MODE_KEY, mode.name()); | ||
| if (previous != null && previous.equals(mode.name()) == false) { | ||
| throw new IllegalStateException( | ||
| "found existing value for " + MODE_KEY + " for segment: " + si.name + " old = " + previous + ", new = " + mode.name() | ||
| ); | ||
| } | ||
| return impl(mode).fieldsWriter(directory, si, context); | ||
| } | ||
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| StoredFieldsFormat impl(Lucene912CustomCodec.Mode mode) { | ||
| switch (mode) { | ||
| case ZSTD: | ||
| return getCustomCompressingStoredFieldsFormat("CustomStoredFieldsZstd", this.zstdCompressionMode); | ||
| case ZSTD_NO_DICT: | ||
| return getCustomCompressingStoredFieldsFormat("CustomStoredFieldsZstdNoDict", this.zstdNoDictCompressionMode); | ||
| default: | ||
| throw new IllegalStateException("Unsupported compression mode: " + mode); | ||
| } | ||
| } | ||
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| private StoredFieldsFormat getCustomCompressingStoredFieldsFormat(String formatName, CompressionMode compressionMode) { | ||
| return new Lucene90CompressingStoredFieldsFormat( | ||
| formatName, | ||
| compressionMode, | ||
| ZSTD_BLOCK_LENGTH, | ||
| ZSTD_MAX_DOCS_PER_BLOCK, | ||
| ZSTD_BLOCK_SHIFT | ||
| ); | ||
| } | ||
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| public Lucene912CustomCodec.Mode getMode() { | ||
| return mode; | ||
| } | ||
|
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| /** | ||
| * Returns the compression level. | ||
| */ | ||
| public int getCompressionLevel() { | ||
| return compressionLevel; | ||
| } | ||
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| public CompressionMode getCompressionMode() { | ||
| return mode == Lucene912CustomCodec.Mode.ZSTD_NO_DICT ? zstdNoDictCompressionMode : zstdCompressionMode; | ||
| } | ||
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| } |
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