org.elasticsearch.index.IndexMode Maven / Gradle / Ivy
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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 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.index;
import org.elasticsearch.cluster.metadata.IndexMetadata;
import org.elasticsearch.cluster.metadata.MetadataCreateDataStreamService;
import org.elasticsearch.common.compress.CompressedXContent;
import org.elasticsearch.common.settings.IndexScopedSettings;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.index.mapper.DataStreamTimestampFieldMapper;
import org.elasticsearch.index.mapper.DateFieldMapper;
import org.elasticsearch.index.mapper.DocumentDimensions;
import org.elasticsearch.index.mapper.IdFieldMapper;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.mapper.MappingLookup;
import org.elasticsearch.index.mapper.MetadataFieldMapper;
import org.elasticsearch.index.mapper.NestedLookup;
import org.elasticsearch.index.mapper.ProvidedIdFieldMapper;
import org.elasticsearch.index.mapper.RoutingFieldMapper;
import org.elasticsearch.index.mapper.TimeSeriesIdFieldMapper;
import org.elasticsearch.index.mapper.TsidExtractingIdFieldMapper;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.BooleanSupplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.util.stream.Collectors.toSet;
/**
* "Mode" that controls which behaviors and settings an index supports.
*
* For the most part this class concentrates on validating settings and
* mappings. Most different behavior is controlled by forcing settings
* to be set or not set and by enabling extra fields in the mapping.
*/
public enum IndexMode {
STANDARD("standard") {
@Override
void validateWithOtherSettings(Map, Object> settings) {
settingRequiresTimeSeries(settings, IndexMetadata.INDEX_ROUTING_PATH);
settingRequiresTimeSeries(settings, IndexSettings.TIME_SERIES_START_TIME);
settingRequiresTimeSeries(settings, IndexSettings.TIME_SERIES_END_TIME);
}
private static void settingRequiresTimeSeries(Map, Object> settings, Setting setting) {
if (false == Objects.equals(setting.getDefault(Settings.EMPTY), settings.get(setting))) {
throw new IllegalArgumentException("[" + setting.getKey() + "] requires " + tsdbMode());
}
}
@Override
public void validateMapping(MappingLookup lookup) {};
@Override
public void validateAlias(@Nullable String indexRouting, @Nullable String searchRouting) {}
@Override
public void validateTimestampFieldMapping(boolean isDataStream, MappingLookup mappingLookup) throws IOException {
if (isDataStream) {
MetadataCreateDataStreamService.validateTimestampFieldMapping(mappingLookup);
}
}
@Override
public CompressedXContent getDefaultMapping() {
return null;
}
@Override
public TimestampBounds getTimestampBound(IndexScopedSettings settings) {
return null;
}
@Override
public MetadataFieldMapper buildTimeSeriesIdFieldMapper() {
// non time-series indices must not have a TimeSeriesIdFieldMapper
return null;
}
@Override
public IdFieldMapper buildNoFieldDataIdFieldMapper() {
return ProvidedIdFieldMapper.NO_FIELD_DATA;
}
@Override
public IdFieldMapper buildIdFieldMapper(BooleanSupplier fieldDataEnabled) {
return new ProvidedIdFieldMapper(fieldDataEnabled);
}
@Override
public DocumentDimensions buildDocumentDimensions() {
return new DocumentDimensions.OnlySingleValueAllowed();
}
},
TIME_SERIES("time_series") {
@Override
void validateWithOtherSettings(Map, Object> settings) {
if (settings.get(IndexMetadata.INDEX_ROUTING_PARTITION_SIZE_SETTING) != Integer.valueOf(1)) {
throw new IllegalArgumentException(error(IndexMetadata.INDEX_ROUTING_PARTITION_SIZE_SETTING));
}
for (Setting unsupported : TIME_SERIES_UNSUPPORTED) {
if (false == Objects.equals(unsupported.getDefault(Settings.EMPTY), settings.get(unsupported))) {
throw new IllegalArgumentException(error(unsupported));
}
}
checkSetting(settings, IndexMetadata.INDEX_ROUTING_PATH);
}
private static void checkSetting(Map, Object> settings, Setting setting) {
if (Objects.equals(setting.getDefault(Settings.EMPTY), settings.get(setting))) {
throw new IllegalArgumentException(tsdbMode() + " requires a non-empty [" + setting.getKey() + "]");
}
}
private static String error(Setting unsupported) {
return tsdbMode() + " is incompatible with [" + unsupported.getKey() + "]";
}
@Override
public void validateMapping(MappingLookup lookup) {
if (lookup.nestedLookup() != NestedLookup.EMPTY) {
throw new IllegalArgumentException("cannot have nested fields when index is in " + tsdbMode());
}
if (((RoutingFieldMapper) lookup.getMapper(RoutingFieldMapper.NAME)).required()) {
throw new IllegalArgumentException(routingRequiredBad());
}
}
@Override
public void validateAlias(@Nullable String indexRouting, @Nullable String searchRouting) {
if (indexRouting != null || searchRouting != null) {
throw new IllegalArgumentException(routingRequiredBad());
}
}
@Override
public void validateTimestampFieldMapping(boolean isDataStream, MappingLookup mappingLookup) throws IOException {
MetadataCreateDataStreamService.validateTimestampFieldMapping(mappingLookup);
}
@Override
public CompressedXContent getDefaultMapping() {
return DEFAULT_TIME_SERIES_TIMESTAMP_MAPPING;
}
@Override
public TimestampBounds getTimestampBound(IndexScopedSettings settings) {
return new TimestampBounds(settings);
}
private static String routingRequiredBad() {
return "routing is forbidden on CRUD operations that target indices in " + tsdbMode();
}
@Override
public MetadataFieldMapper buildTimeSeriesIdFieldMapper() {
return TimeSeriesIdFieldMapper.INSTANCE;
}
@Override
public IdFieldMapper buildNoFieldDataIdFieldMapper() {
return TsidExtractingIdFieldMapper.INSTANCE;
}
@Override
public IdFieldMapper buildIdFieldMapper(BooleanSupplier fieldDataEnabled) {
// We don't support field data on TSDB's _id
return TsidExtractingIdFieldMapper.INSTANCE;
}
@Override
public DocumentDimensions buildDocumentDimensions() {
return new TimeSeriesIdFieldMapper.TimeSeriesIdBuilder();
}
};
protected static String tsdbMode() {
return "[" + IndexSettings.MODE.getKey() + "=time_series]";
}
public static final CompressedXContent DEFAULT_TIME_SERIES_TIMESTAMP_MAPPING;
static {
try {
DEFAULT_TIME_SERIES_TIMESTAMP_MAPPING = new CompressedXContent(
((builder, params) -> builder.startObject(MapperService.SINGLE_MAPPING_NAME)
.startObject(DataStreamTimestampFieldMapper.NAME)
.field("enabled", true)
.endObject()
.startObject("properties")
.startObject(DataStreamTimestampFieldMapper.DEFAULT_PATH)
.field("type", DateFieldMapper.CONTENT_TYPE)
.endObject()
.endObject()
.endObject())
);
} catch (IOException e) {
throw new AssertionError(e);
}
}
private static final List> TIME_SERIES_UNSUPPORTED = List.of(
IndexSortConfig.INDEX_SORT_FIELD_SETTING,
IndexSortConfig.INDEX_SORT_ORDER_SETTING,
IndexSortConfig.INDEX_SORT_MODE_SETTING,
IndexSortConfig.INDEX_SORT_MISSING_SETTING
);
static final List> VALIDATE_WITH_SETTINGS = List.copyOf(
Stream.concat(
Stream.of(
IndexMetadata.INDEX_ROUTING_PARTITION_SIZE_SETTING,
IndexMetadata.INDEX_ROUTING_PATH,
IndexSettings.TIME_SERIES_START_TIME,
IndexSettings.TIME_SERIES_END_TIME
),
TIME_SERIES_UNSUPPORTED.stream()
).collect(toSet())
);
private final String name;
IndexMode(String name) {
this.name = name;
}
public String getName() {
return name;
}
abstract void validateWithOtherSettings(Map, Object> settings);
/**
* Validate the mapping for this index.
*/
public abstract void validateMapping(MappingLookup lookup);
/**
* Validate aliases targeting this index.
*/
public abstract void validateAlias(@Nullable String indexRouting, @Nullable String searchRouting);
/**
* validate timestamp mapping for this index.
*/
public abstract void validateTimestampFieldMapping(boolean isDataStream, MappingLookup mappingLookup) throws IOException;
/**
* Get default mapping for this index or {@code null} if there is none.
*/
@Nullable
public abstract CompressedXContent getDefaultMapping();
public abstract IdFieldMapper buildIdFieldMapper(BooleanSupplier fieldDataEnabled);
public abstract IdFieldMapper buildNoFieldDataIdFieldMapper();
/**
* Get timebounds
*/
@Nullable
public abstract TimestampBounds getTimestampBound(IndexScopedSettings settings);
/**
* Return an instance of the {@link TimeSeriesIdFieldMapper} that generates
* the _tsid field. The field mapper will be added to the list of the metadata
* field mappers for the index.
*/
public abstract MetadataFieldMapper buildTimeSeriesIdFieldMapper();
/**
* How {@code time_series_dimension} fields are handled by indices in this mode.
*/
public abstract DocumentDimensions buildDocumentDimensions();
public static IndexMode fromString(String value) {
return switch (value) {
case "standard" -> IndexMode.STANDARD;
case "time_series" -> IndexMode.TIME_SERIES;
default -> throw new IllegalArgumentException(
"["
+ value
+ "] is an invalid index mode, valid modes are: ["
+ Arrays.stream(IndexMode.values()).map(IndexMode::toString).collect(Collectors.joining())
+ "]"
);
};
}
@Override
public String toString() {
return getName();
}
}