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org.elasticsearch.action.admin.indices.mapping.get.TransportGetFieldMappingsAction Maven / Gradle / Ivy
/*
* 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.mapping.get;
import com.google.common.base.Predicate;
import com.google.common.collect.Collections2;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Sets;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.mapping.get.GetFieldMappingsResponse.FieldMappingMetaData;
import org.elasticsearch.action.support.master.info.TransportClusterInfoAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.mapper.DocumentMapper;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.index.service.IndexService;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.Collection;
/**
*/
public class TransportGetFieldMappingsAction extends TransportClusterInfoAction {
private final IndicesService indicesService;
@Inject
public TransportGetFieldMappingsAction(Settings settings, TransportService transportService, ClusterService clusterService,
IndicesService indicesService, ThreadPool threadPool) {
super(settings, transportService, clusterService, threadPool);
this.indicesService = indicesService;
}
@Override
protected String transportAction() {
return GetFieldMappingsAction.NAME;
}
@Override
protected GetFieldMappingsRequest newRequest() {
return new GetFieldMappingsRequest();
}
@Override
protected GetFieldMappingsResponse newResponse() {
return new GetFieldMappingsResponse();
}
@Override
protected void doMasterOperation(final GetFieldMappingsRequest request, final ClusterState state, final ActionListener listener) throws ElasticsearchException {
listener.onResponse(new GetFieldMappingsResponse(findMappings(request.indices(), request.types(), request.fields(), request.includeDefaults())));
}
private ImmutableMap>> findMappings(String[] concreteIndices,
final String[] types,
final String[] fields,
boolean includeDefaults) {
assert types != null;
assert concreteIndices != null;
if (concreteIndices.length == 0) {
return ImmutableMap.of();
}
ImmutableMap.Builder>> indexMapBuilder = ImmutableMap.builder();
Sets.SetView intersection = Sets.intersection(Sets.newHashSet(concreteIndices), indicesService.indices());
for (String index : intersection) {
IndexService indexService = indicesService.indexService(index);
Collection typeIntersection;
if (types.length == 0) {
typeIntersection = indexService.mapperService().types();
} else {
typeIntersection = Collections2.filter(indexService.mapperService().types(), new Predicate() {
@Override
public boolean apply(String type) {
return Regex.simpleMatch(types, type);
}
});
}
MapBuilder> typeMappings = new MapBuilder>();
for (String type : typeIntersection) {
DocumentMapper documentMapper = indexService.mapperService().documentMapper(type);
ImmutableMap fieldMapping = findFieldMappingsByType(documentMapper, fields, includeDefaults);
if (!fieldMapping.isEmpty()) {
typeMappings.put(type, fieldMapping);
}
}
if (!typeMappings.isEmpty()) {
indexMapBuilder.put(index, typeMappings.immutableMap());
}
}
return indexMapBuilder.build();
}
private static final ToXContent.Params includeDefaultsParams = new ToXContent.Params() {
final static String INCLUDE_DEFAULTS = "include_defaults";
@Override
public String param(String key) {
if (INCLUDE_DEFAULTS.equals(key)) {
return "true";
}
return null;
}
@Override
public String param(String key, String defaultValue) {
if (INCLUDE_DEFAULTS.equals(key)) {
return "true";
}
return defaultValue;
}
@Override
public boolean paramAsBoolean(String key, boolean defaultValue) {
if (INCLUDE_DEFAULTS.equals(key)) {
return true;
}
return defaultValue;
}
@Override
public Boolean paramAsBooleanOptional(String key, Boolean defaultValue) {
if (INCLUDE_DEFAULTS.equals(key)) {
return true;
}
return defaultValue;
}
};
private ImmutableMap findFieldMappingsByType(DocumentMapper documentMapper, String[] fields,
boolean includeDefaults) throws ElasticsearchException {
MapBuilder fieldMappings = new MapBuilder();
ImmutableList allFieldMappers = documentMapper.mappers().mappers();
for (String field : fields) {
if (Regex.isMatchAllPattern(field)) {
for (FieldMapper fieldMapper : allFieldMappers) {
addFieldMapper(fieldMapper.names().fullName(), fieldMapper, fieldMappings, includeDefaults);
}
} else if (Regex.isSimpleMatchPattern(field)) {
// go through the field mappers 3 times, to make sure we give preference to the resolve order: full name, index name, name.
// also make sure we only store each mapper once.
boolean[] resolved = new boolean[allFieldMappers.size()];
for (int i = 0; i < allFieldMappers.size(); i++) {
FieldMapper fieldMapper = allFieldMappers.get(i);
if (Regex.simpleMatch(field, fieldMapper.names().fullName())) {
addFieldMapper(fieldMapper.names().fullName(), fieldMapper, fieldMappings, includeDefaults);
resolved[i] = true;
}
}
for (int i = 0; i < allFieldMappers.size(); i++) {
if (resolved[i]) {
continue;
}
FieldMapper fieldMapper = allFieldMappers.get(i);
if (Regex.simpleMatch(field, fieldMapper.names().indexName())) {
addFieldMapper(fieldMapper.names().indexName(), fieldMapper, fieldMappings, includeDefaults);
resolved[i] = true;
}
}
for (int i = 0; i < allFieldMappers.size(); i++) {
if (resolved[i]) {
continue;
}
FieldMapper fieldMapper = allFieldMappers.get(i);
if (Regex.simpleMatch(field, fieldMapper.names().name())) {
addFieldMapper(fieldMapper.names().name(), fieldMapper, fieldMappings, includeDefaults);
resolved[i] = true;
}
}
} else {
// not a pattern
FieldMapper fieldMapper = documentMapper.mappers().smartNameFieldMapper(field);
if (fieldMapper != null) {
addFieldMapper(field, fieldMapper, fieldMappings, includeDefaults);
}
}
}
return fieldMappings.immutableMap();
}
private void addFieldMapper(String field, FieldMapper fieldMapper, MapBuilder fieldMappings, boolean includeDefaults) {
if (fieldMappings.containsKey(field)) {
return;
}
try {
XContentBuilder builder = XContentFactory.contentBuilder(XContentType.JSON);
builder.startObject();
fieldMapper.toXContent(builder, includeDefaults ? includeDefaultsParams : ToXContent.EMPTY_PARAMS);
builder.endObject();
fieldMappings.put(field, new FieldMappingMetaData(fieldMapper.names().fullName(), builder.bytes()));
} catch (IOException e) {
throw new ElasticsearchException("failed to serialize XContent of field [" + field + "]", e);
}
}
}