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Adding trained model metadata class.
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...in/core/src/main/java/org/elasticsearch/xpack/core/ml/inference/TrainedModelMetadata.java
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| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License | ||
| * 2.0; you may not use this file except in compliance with the Elastic License | ||
| * 2.0. | ||
| */ | ||
|
|
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| package org.elasticsearch.xpack.core.ml.inference; | ||
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|
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| import org.elasticsearch.TransportVersion; | ||
| import org.elasticsearch.cluster.Diff; | ||
| import org.elasticsearch.cluster.DiffableUtils; | ||
| import org.elasticsearch.cluster.NamedDiff; | ||
| import org.elasticsearch.cluster.SimpleDiffable; | ||
| import org.elasticsearch.cluster.metadata.Metadata; | ||
| import org.elasticsearch.common.io.stream.StreamInput; | ||
| import org.elasticsearch.common.io.stream.StreamOutput; | ||
| import org.elasticsearch.common.xcontent.ChunkedToXContentHelper; | ||
| import org.elasticsearch.xcontent.ConstructingObjectParser; | ||
| import org.elasticsearch.xcontent.ParseField; | ||
| import org.elasticsearch.xcontent.ToXContent; | ||
| import org.elasticsearch.xcontent.ToXContentObject; | ||
| import org.elasticsearch.xcontent.XContentBuilder; | ||
| import org.elasticsearch.xcontent.XContentParser; | ||
|
|
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| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.EnumSet; | ||
| import java.util.HashMap; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
| import java.util.function.Function; | ||
| import java.util.stream.Collectors; | ||
|
|
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| public class TrainedModelMetadata implements Metadata.Custom { | ||
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| public static final String NAME = "trained_model_metadata"; | ||
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| public static final TrainedModelMetadata EMPTY = new TrainedModelMetadata(new HashMap<>()); | ||
| private static final ParseField MODELS = new ParseField("models"); | ||
| private static final ParseField MODEL_ID = new ParseField("model_id"); | ||
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| @SuppressWarnings("unchecked") | ||
| private static final ConstructingObjectParser<TrainedModelMetadata, Void> PARSER = new ConstructingObjectParser<>( | ||
| NAME, | ||
| true, | ||
| args -> new TrainedModelMetadata((Map<String, TrainedModelMetadataEntry>) args[0]) | ||
| ); | ||
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| static { | ||
| PARSER.declareObject(ConstructingObjectParser.constructorArg(), (p, c) -> { | ||
| List<TrainedModelMetadataEntry> models = new ArrayList<>(); | ||
| while (p.nextToken() != XContentParser.Token.END_ARRAY) { | ||
| models.add(TrainedModelMetadataEntry.fromXContent(p)); | ||
| } | ||
| return models.stream().collect(Collectors.toMap(TrainedModelMetadataEntry::getModelId, Function.identity())); | ||
| }, MODELS); | ||
| } | ||
|
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| public static TrainedModelMetadata fromXContent(XContentParser parser) { | ||
| return PARSER.apply(parser, null); | ||
| } | ||
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| public static NamedDiff<Metadata.Custom> readDiffFrom(StreamInput in) throws IOException { | ||
| return new TrainedModelMetadataDiff(in); | ||
| } | ||
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| private final Map<String, TrainedModelMetadataEntry> models; | ||
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| public TrainedModelMetadata(Map<String, TrainedModelMetadataEntry> models) { | ||
| this.models = models; | ||
| } | ||
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| public TrainedModelMetadata(StreamInput in) throws IOException { | ||
| this.models = in.readImmutableMap(TrainedModelMetadataEntry::new); | ||
| } | ||
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| @Override | ||
| public Iterator<? extends ToXContent> toXContentChunked(ToXContent.Params ignored) { | ||
| return ChunkedToXContentHelper.xContentValuesMap(MODELS.getPreferredName(), models); | ||
| } | ||
|
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| @Override | ||
| public EnumSet<Metadata.XContentContext> context() { | ||
| return Metadata.ALL_CONTEXTS; | ||
| } | ||
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| @Override | ||
| public String getWriteableName() { | ||
| return NAME; | ||
| } | ||
|
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| @Override | ||
| public TransportVersion getMinimalSupportedVersion() { | ||
| // TODO: Add a new entry in TransportVersions before merge. | ||
| return TransportVersion.current(); | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| out.writeMap(this.models, StreamOutput::writeWriteable); | ||
| } | ||
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| @Override | ||
| public Diff<Metadata.Custom> diff(Metadata.Custom previousState) { | ||
| return new TrainedModelMetadataDiff((TrainedModelMetadata) previousState, this); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) return true; | ||
| if (o == null || getClass() != o.getClass()) return false; | ||
| TrainedModelMetadata that = (TrainedModelMetadata) o; | ||
| return Objects.equals(models, that.models); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(models); | ||
| } | ||
|
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| public static class TrainedModelMetadataDiff implements NamedDiff<Metadata.Custom> { | ||
| final Diff<Map<String, TrainedModelMetadataEntry>> modelsDiff; | ||
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| TrainedModelMetadataDiff(TrainedModelMetadata before, TrainedModelMetadata after) { | ||
| this.modelsDiff = DiffableUtils.diff(before.models, after.models, DiffableUtils.getStringKeySerializer()); | ||
| } | ||
|
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| TrainedModelMetadataDiff(StreamInput in) throws IOException { | ||
| this.modelsDiff = DiffableUtils.readJdkMapDiff( | ||
| in, | ||
| DiffableUtils.getStringKeySerializer(), | ||
| TrainedModelMetadataEntry::new, | ||
| TrainedModelMetadataEntry::readDiffFrom | ||
| ); | ||
| } | ||
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| @Override | ||
| public Metadata.Custom apply(Metadata.Custom part) { | ||
| return new TrainedModelMetadata(modelsDiff.apply(((TrainedModelMetadata) part).models)); | ||
| } | ||
|
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| @Override | ||
| public String getWriteableName() { | ||
| return NAME; | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| modelsDiff.writeTo(out); | ||
| } | ||
|
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| @Override | ||
| public TransportVersion getMinimalSupportedVersion() { | ||
| // TODO: Add a new entry in TransportVersions before merge. | ||
| return TransportVersion.current(); | ||
| } | ||
| } | ||
| public static class TrainedModelMetadataEntry implements SimpleDiffable<TrainedModelMetadataEntry>, ToXContentObject { | ||
| private static final ConstructingObjectParser<TrainedModelMetadataEntry, Void> PARSER = new ConstructingObjectParser<>( | ||
| "trained_model_metadata_entry", | ||
| true, | ||
| args -> new TrainedModelMetadataEntry((String) args[0]) | ||
| ); | ||
| static { | ||
| PARSER.declareString(ConstructingObjectParser.constructorArg(), MODEL_ID); | ||
| } | ||
|
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| private static Diff<TrainedModelMetadataEntry> readDiffFrom(StreamInput in) throws IOException { | ||
| return SimpleDiffable.readDiffFrom(TrainedModelMetadataEntry::new, in); | ||
| } | ||
|
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| private static TrainedModelMetadataEntry fromXContent(XContentParser parser) { | ||
| return PARSER.apply(parser, null); | ||
| } | ||
|
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| private final String modelId; | ||
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| public TrainedModelMetadataEntry(String modelId) { | ||
| this.modelId = modelId; | ||
| } | ||
|
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| TrainedModelMetadataEntry(StreamInput in) throws IOException { | ||
| this.modelId = in.readString(); | ||
| } | ||
|
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| public String getModelId() { | ||
| return modelId; | ||
| } | ||
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| @Override | ||
| public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException { | ||
| builder.startObject(); | ||
| builder.field(MODEL_ID.getPreferredName(), modelId); | ||
| builder.endObject(); | ||
| return builder; | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| out.writeString(modelId); | ||
| } | ||
|
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) return true; | ||
| if (o == null || getClass() != o.getClass()) return false; | ||
| TrainedModelMetadataEntry that = (TrainedModelMetadataEntry) o; | ||
| return Objects.equals(modelId, that.modelId); | ||
| } | ||
|
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(modelId); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return "TrainedModelMetadataEntry{modelId='" + modelId + "'}"; | ||
| } | ||
| } | ||
| } |
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