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Elasticsearch subproject :client:rest-high-level
/*
* 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.client.indices;
import org.apache.lucene.util.CollectionUtil;
import org.elasticsearch.cluster.metadata.AliasMetadata;
import org.elasticsearch.cluster.metadata.MappingMetadata;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.xcontent.XContentParser;
import org.elasticsearch.xcontent.XContentParser.Token;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
/**
* A client side response for a get index action.
*/
public class GetIndexResponse {
private Map mappings;
private Map> aliases;
private Map settings;
private Map defaultSettings;
private Map dataStreams;
private String[] indices;
GetIndexResponse(
String[] indices,
Map mappings,
Map> aliases,
Map settings,
Map defaultSettings,
Map dataStreams
) {
this.indices = indices;
// to have deterministic order
Arrays.sort(indices);
if (mappings != null) {
this.mappings = mappings;
}
if (aliases != null) {
this.aliases = aliases;
}
if (settings != null) {
this.settings = settings;
}
if (defaultSettings != null) {
this.defaultSettings = defaultSettings;
}
if (dataStreams != null) {
this.dataStreams = dataStreams;
}
}
public String[] getIndices() {
return indices;
}
public Map getMappings() {
return mappings;
}
public Map> getAliases() {
return aliases;
}
/**
* If the originating {@link GetIndexRequest} object was configured to include
* defaults, this will contain a mapping of index name to {@link Settings} objects.
* The returned {@link Settings} objects will contain only those settings taking
* effect as defaults. Any settings explicitly set on the index will be available
* via {@link #getSettings()}.
* See also {@link GetIndexRequest#includeDefaults(boolean)}
*/
public Map getDefaultSettings() {
return defaultSettings;
}
public Map getSettings() {
return settings;
}
public Map getDataStreams() {
return dataStreams;
}
/**
* Returns the string value for the specified index and setting. If the includeDefaults flag was not set or set to
* false on the {@link GetIndexRequest}, this method will only return a value where the setting was explicitly set
* on the index. If the includeDefaults flag was set to true on the {@link GetIndexRequest}, this method will fall
* back to return the default value if the setting was not explicitly set.
*/
public String getSetting(String index, String setting) {
Settings indexSettings = settings.get(index);
if (setting != null) {
if (indexSettings != null && indexSettings.hasValue(setting)) {
return indexSettings.get(setting);
} else {
Settings defaultIndexSettings = defaultSettings.get(index);
if (defaultIndexSettings != null) {
return defaultIndexSettings.get(setting);
} else {
return null;
}
}
} else {
return null;
}
}
private static List parseAliases(XContentParser parser) throws IOException {
List indexAliases = new ArrayList<>();
// We start at START_OBJECT since parseIndexEntry ensures that
while (parser.nextToken() != Token.END_OBJECT) {
ensureExpectedToken(Token.FIELD_NAME, parser.currentToken(), parser);
indexAliases.add(AliasMetadata.Builder.fromXContent(parser));
}
return indexAliases;
}
private static MappingMetadata parseMappings(XContentParser parser) throws IOException {
return new MappingMetadata(MapperService.SINGLE_MAPPING_NAME, parser.map());
}
private static IndexEntry parseIndexEntry(XContentParser parser) throws IOException {
List indexAliases = null;
MappingMetadata indexMappings = null;
Settings indexSettings = null;
Settings indexDefaultSettings = null;
String dataStream = null;
// We start at START_OBJECT since fromXContent ensures that
while (parser.nextToken() != Token.END_OBJECT) {
ensureExpectedToken(Token.FIELD_NAME, parser.currentToken(), parser);
parser.nextToken();
if (parser.currentToken() == Token.START_OBJECT) {
switch (parser.currentName()) {
case "aliases":
indexAliases = parseAliases(parser);
break;
case "mappings":
indexMappings = parseMappings(parser);
break;
case "settings":
indexSettings = Settings.fromXContent(parser);
break;
case "defaults":
indexDefaultSettings = Settings.fromXContent(parser);
break;
default:
parser.skipChildren();
}
} else if (parser.currentToken() == Token.VALUE_STRING) {
if (parser.currentName().equals("data_stream")) {
dataStream = parser.text();
}
parser.skipChildren();
} else if (parser.currentToken() == Token.START_ARRAY) {
parser.skipChildren();
}
}
return new IndexEntry(indexAliases, indexMappings, indexSettings, indexDefaultSettings, dataStream);
}
// This is just an internal container to make stuff easier for returning
private static class IndexEntry {
List indexAliases = new ArrayList<>();
MappingMetadata indexMappings;
Settings indexSettings = Settings.EMPTY;
Settings indexDefaultSettings = Settings.EMPTY;
String dataStream;
IndexEntry(
List indexAliases,
MappingMetadata indexMappings,
Settings indexSettings,
Settings indexDefaultSettings,
String dataStream
) {
if (indexAliases != null) this.indexAliases = indexAliases;
if (indexMappings != null) this.indexMappings = indexMappings;
if (indexSettings != null) this.indexSettings = indexSettings;
if (indexDefaultSettings != null) this.indexDefaultSettings = indexDefaultSettings;
if (dataStream != null) this.dataStream = dataStream;
}
}
public static GetIndexResponse fromXContent(XContentParser parser) throws IOException {
Map> aliases = new HashMap<>();
Map mappings = new HashMap<>();
Map settings = new HashMap<>();
Map defaultSettings = new HashMap<>();
Map dataStreams = new HashMap<>();
List indices = new ArrayList<>();
if (parser.currentToken() == null) {
parser.nextToken();
}
ensureExpectedToken(Token.START_OBJECT, parser.currentToken(), parser);
parser.nextToken();
while (parser.isClosed() == false) {
if (parser.currentToken() == Token.START_OBJECT) {
// we assume this is an index entry
String indexName = parser.currentName();
indices.add(indexName);
IndexEntry indexEntry = parseIndexEntry(parser);
// make the order deterministic
CollectionUtil.timSort(indexEntry.indexAliases, Comparator.comparing(AliasMetadata::alias));
aliases.put(indexName, Collections.unmodifiableList(indexEntry.indexAliases));
mappings.put(indexName, indexEntry.indexMappings);
settings.put(indexName, indexEntry.indexSettings);
if (indexEntry.indexDefaultSettings.isEmpty() == false) {
defaultSettings.put(indexName, indexEntry.indexDefaultSettings);
}
if (indexEntry.dataStream != null) {
dataStreams.put(indexName, indexEntry.dataStream);
}
} else if (parser.currentToken() == Token.START_ARRAY) {
parser.skipChildren();
} else {
parser.nextToken();
}
}
return new GetIndexResponse(indices.toArray(new String[0]), mappings, aliases, settings, defaultSettings, dataStreams);
}
}
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