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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.action.admin.indices.get;
import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
import org.apache.lucene.util.CollectionUtil;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.cluster.metadata.AliasMetaData;
import org.elasticsearch.cluster.metadata.MappingMetaData;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContentObject;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentParser.Token;
import org.elasticsearch.index.mapper.MapperService;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Objects;
import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
import static org.elasticsearch.rest.BaseRestHandler.DEFAULT_INCLUDE_TYPE_NAME_POLICY;
import static org.elasticsearch.rest.BaseRestHandler.INCLUDE_TYPE_NAME_PARAMETER;
/**
* A response for a get index action.
*/
public class GetIndexResponse extends ActionResponse implements ToXContentObject {
private ImmutableOpenMap> mappings = ImmutableOpenMap.of();
private ImmutableOpenMap> aliases = ImmutableOpenMap.of();
private ImmutableOpenMap settings = ImmutableOpenMap.of();
private ImmutableOpenMap defaultSettings = ImmutableOpenMap.of();
private String[] indices;
public GetIndexResponse(String[] indices,
ImmutableOpenMap> mappings,
ImmutableOpenMap> aliases,
ImmutableOpenMap settings,
ImmutableOpenMap defaultSettings) {
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;
}
}
GetIndexResponse(StreamInput in) throws IOException {
super(in);
this.indices = in.readStringArray();
int mappingsSize = in.readVInt();
ImmutableOpenMap.Builder> mappingsMapBuilder = ImmutableOpenMap.builder();
for (int i = 0; i < mappingsSize; i++) {
String key = in.readString();
int valueSize = in.readVInt();
ImmutableOpenMap.Builder mappingEntryBuilder = ImmutableOpenMap.builder();
for (int j = 0; j < valueSize; j++) {
mappingEntryBuilder.put(in.readString(), new MappingMetaData(in));
}
mappingsMapBuilder.put(key, mappingEntryBuilder.build());
}
mappings = mappingsMapBuilder.build();
int aliasesSize = in.readVInt();
ImmutableOpenMap.Builder> aliasesMapBuilder = ImmutableOpenMap.builder();
for (int i = 0; i < aliasesSize; i++) {
String key = in.readString();
int valueSize = in.readVInt();
List aliasEntryBuilder = new ArrayList<>(valueSize);
for (int j = 0; j < valueSize; j++) {
aliasEntryBuilder.add(new AliasMetaData(in));
}
aliasesMapBuilder.put(key, Collections.unmodifiableList(aliasEntryBuilder));
}
aliases = aliasesMapBuilder.build();
int settingsSize = in.readVInt();
ImmutableOpenMap.Builder settingsMapBuilder = ImmutableOpenMap.builder();
for (int i = 0; i < settingsSize; i++) {
String key = in.readString();
settingsMapBuilder.put(key, Settings.readSettingsFromStream(in));
}
settings = settingsMapBuilder.build();
ImmutableOpenMap.Builder defaultSettingsMapBuilder = ImmutableOpenMap.builder();
if (in.getVersion().onOrAfter(Version.V_6_4_0)) {
int defaultSettingsSize = in.readVInt();
for (int i = 0; i < defaultSettingsSize ; i++) {
defaultSettingsMapBuilder.put(in.readString(), Settings.readSettingsFromStream(in));
}
}
defaultSettings = defaultSettingsMapBuilder.build();
}
public String[] indices() {
return indices;
}
public String[] getIndices() {
return indices();
}
public ImmutableOpenMap> mappings() {
return mappings;
}
public ImmutableOpenMap> getMappings() {
return mappings();
}
public ImmutableOpenMap> aliases() {
return aliases;
}
public ImmutableOpenMap> getAliases() {
return aliases();
}
public ImmutableOpenMap settings() {
return settings;
}
/**
* 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 #settings()}.
* See also {@link GetIndexRequest#includeDefaults(boolean)}
*/
public ImmutableOpenMap defaultSettings() {
return defaultSettings;
}
public ImmutableOpenMap getSettings() {
return settings();
}
/**
* 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;
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeStringArray(indices);
out.writeVInt(mappings.size());
for (ObjectObjectCursor> indexEntry : mappings) {
out.writeString(indexEntry.key);
out.writeVInt(indexEntry.value.size());
for (ObjectObjectCursor mappingEntry : indexEntry.value) {
out.writeString(mappingEntry.key);
mappingEntry.value.writeTo(out);
}
}
out.writeVInt(aliases.size());
for (ObjectObjectCursor> indexEntry : aliases) {
out.writeString(indexEntry.key);
out.writeVInt(indexEntry.value.size());
for (AliasMetaData aliasEntry : indexEntry.value) {
aliasEntry.writeTo(out);
}
}
out.writeVInt(settings.size());
for (ObjectObjectCursor indexEntry : settings) {
out.writeString(indexEntry.key);
Settings.writeSettingsToStream(indexEntry.value, out);
}
if (out.getVersion().onOrAfter(Version.V_6_4_0)) {
out.writeVInt(defaultSettings.size());
for (ObjectObjectCursor indexEntry : defaultSettings) {
out.writeString(indexEntry.key);
Settings.writeSettingsToStream(indexEntry.value, out);
}
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
{
for (final String index : indices) {
builder.startObject(index);
{
builder.startObject("aliases");
List indexAliases = aliases.get(index);
if (indexAliases != null) {
for (final AliasMetaData alias : indexAliases) {
AliasMetaData.Builder.toXContent(alias, builder, params);
}
}
builder.endObject();
ImmutableOpenMap indexMappings = mappings.get(index);
boolean includeTypeName = params.paramAsBoolean(INCLUDE_TYPE_NAME_PARAMETER,
DEFAULT_INCLUDE_TYPE_NAME_POLICY);
if (includeTypeName) {
builder.startObject("mappings");
if (indexMappings != null) {
for (final ObjectObjectCursor typeEntry : indexMappings) {
builder.field(typeEntry.key);
builder.map(typeEntry.value.sourceAsMap());
}
}
builder.endObject();
} else {
MappingMetaData mappings = null;
for (final ObjectObjectCursor typeEntry : indexMappings) {
if (typeEntry.key.equals(MapperService.DEFAULT_MAPPING) == false) {
assert mappings == null;
mappings = typeEntry.value;
}
}
if (mappings == null) {
// no mappings yet
builder.startObject("mappings").endObject();
} else {
builder.field("mappings", mappings.sourceAsMap());
}
}
builder.startObject("settings");
Settings indexSettings = settings.get(index);
if (indexSettings != null) {
indexSettings.toXContent(builder, params);
}
builder.endObject();
Settings defaultIndexSettings = defaultSettings.get(index);
if (defaultIndexSettings != null && defaultIndexSettings.isEmpty() == false) {
builder.startObject("defaults");
defaultIndexSettings.toXContent(builder, params);
builder.endObject();
}
}
builder.endObject();
}
}
builder.endObject();
return builder;
}
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::getTokenLocation);
indexAliases.add(AliasMetaData.Builder.fromXContent(parser));
}
return indexAliases;
}
private static ImmutableOpenMap parseMappings(XContentParser parser) throws IOException {
ImmutableOpenMap.Builder indexMappings = ImmutableOpenMap.builder();
// We start at START_OBJECT since parseIndexEntry ensures that
while (parser.nextToken() != Token.END_OBJECT) {
ensureExpectedToken(Token.FIELD_NAME, parser.currentToken(), parser::getTokenLocation);
parser.nextToken();
if (parser.currentToken() == Token.START_OBJECT) {
String mappingType = parser.currentName();
indexMappings.put(mappingType, new MappingMetaData(mappingType, parser.map()));
} else if (parser.currentToken() == Token.START_ARRAY) {
parser.skipChildren();
}
}
return indexMappings.build();
}
private static IndexEntry parseIndexEntry(XContentParser parser) throws IOException {
List indexAliases = null;
ImmutableOpenMap indexMappings = null;
Settings indexSettings = null;
Settings indexDefaultSettings = null;
// We start at START_OBJECT since fromXContent ensures that
while (parser.nextToken() != Token.END_OBJECT) {
ensureExpectedToken(Token.FIELD_NAME, parser.currentToken(), parser::getTokenLocation);
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.START_ARRAY) {
parser.skipChildren();
}
}
return new IndexEntry(indexAliases, indexMappings, indexSettings, indexDefaultSettings);
}
// This is just an internal container to make stuff easier for returning
private static class IndexEntry {
List indexAliases = new ArrayList<>();
ImmutableOpenMap indexMappings = ImmutableOpenMap.of();
Settings indexSettings = Settings.EMPTY;
Settings indexDefaultSettings = Settings.EMPTY;
IndexEntry(List indexAliases, ImmutableOpenMap indexMappings,
Settings indexSettings, Settings indexDefaultSettings) {
if (indexAliases != null) this.indexAliases = indexAliases;
if (indexMappings != null) this.indexMappings = indexMappings;
if (indexSettings != null) this.indexSettings = indexSettings;
if (indexDefaultSettings != null) this.indexDefaultSettings = indexDefaultSettings;
}
}
public static GetIndexResponse fromXContent(XContentParser parser) throws IOException {
ImmutableOpenMap.Builder> aliases = ImmutableOpenMap.builder();
ImmutableOpenMap.Builder> mappings = ImmutableOpenMap.builder();
ImmutableOpenMap.Builder settings = ImmutableOpenMap.builder();
ImmutableOpenMap.Builder defaultSettings = ImmutableOpenMap.builder();
List indices = new ArrayList<>();
if (parser.currentToken() == null) {
parser.nextToken();
}
ensureExpectedToken(Token.START_OBJECT, parser.currentToken(), parser::getTokenLocation);
parser.nextToken();
while (!parser.isClosed()) {
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);
}
} else if (parser.currentToken() == Token.START_ARRAY) {
parser.skipChildren();
} else {
parser.nextToken();
}
}
return
new GetIndexResponse(
indices.toArray(new String[0]), mappings.build(), aliases.build(),
settings.build(), defaultSettings.build()
);
}
@Override
public String toString() {
return Strings.toString(this);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o== null || getClass() != o.getClass()) return false;
GetIndexResponse that = (GetIndexResponse) o;
return Arrays.equals(indices, that.indices) &&
Objects.equals(aliases, that.aliases) &&
Objects.equals(mappings, that.mappings) &&
Objects.equals(settings, that.settings) &&
Objects.equals(defaultSettings, that.defaultSettings);
}
@Override
public int hashCode() {
return
Objects.hash(
Arrays.hashCode(indices),
aliases,
mappings,
settings,
defaultSettings
);
}
}