/*
* 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.rest.action.admin.indices.get;
import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
import com.google.common.collect.ImmutableList;
import org.elasticsearch.ElasticsearchIllegalStateException;
import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
import org.elasticsearch.action.admin.indices.get.GetIndexResponse;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.client.Client;
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.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContent.Params;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestBuilderListener;
import org.elasticsearch.search.warmer.IndexWarmersMetaData;
import java.io.IOException;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestStatus.OK;
/**
*
*/
public class RestGetIndicesAction extends BaseRestHandler {
@Inject
public RestGetIndicesAction(Settings settings, RestController controller, Client client) {
super(settings, controller, client);
controller.registerHandler(GET, "/{index}", this);
controller.registerHandler(GET, "/{index}/{type}", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
String[] indices = Strings.splitStringByCommaToArray(request.param("index"));
String[] features = request.paramAsStringArray("type", null);
// Work out if the indices is a list of features
if (features == null && indices.length > 0 && indices[0] != null && indices[0].startsWith("_") && !"_all".equals(indices[0])) {
features = indices;
indices = new String[] {"_all"};
}
final GetIndexRequest getIndexRequest = new GetIndexRequest();
getIndexRequest.indices(indices);
if (features != null) {
getIndexRequest.features(features);
}
getIndexRequest.indicesOptions(IndicesOptions.fromRequest(request, getIndexRequest.indicesOptions()));
getIndexRequest.local(request.paramAsBoolean("local", getIndexRequest.local()));
client.admin().indices().getIndex(getIndexRequest, new RestBuilderListener<GetIndexResponse>(channel) {
@Override
public RestResponse buildResponse(GetIndexResponse response, XContentBuilder builder) throws Exception {
String[] features = getIndexRequest.features();
String[] indices = response.indices();
builder.startObject();
for (String index : indices) {
builder.startObject(index);
for (String feature : features) {
switch (feature) {
case "_alias":
case "_aliases":
writeAliases(response.aliases().get(index), builder, request);
break;
case "_mapping":
case "_mappings":
writeMappings(response.mappings().get(index), builder, request);
break;
case "_settings":
writeSettings(response.settings().get(index), builder, request);
break;
case "_warmer":
case "_warmers":
writeWarmers(response.warmers().get(index), builder, request);
break;
default:
throw new ElasticsearchIllegalStateException("feature [" + feature + "] is not valid");
}
}
builder.endObject();
}
builder.endObject();
return new BytesRestResponse(OK, builder);
}
private void writeAliases(ImmutableList<AliasMetaData> aliases, XContentBuilder builder, Params params) throws IOException {
if (aliases != null) {
builder.startObject(Fields.ALIASES);
for (AliasMetaData alias : aliases) {
AliasMetaData.Builder.toXContent(alias, builder, params);
}
builder.endObject();
}
}
private void writeMappings(ImmutableOpenMap<String, MappingMetaData> mappings, XContentBuilder builder, Params params) throws IOException {
if (mappings != null) {
builder.startObject(Fields.MAPPINGS);
for (ObjectObjectCursor<String, MappingMetaData> typeEntry : mappings) {
builder.field(typeEntry.key);
builder.map(typeEntry.value.sourceAsMap());
}
builder.endObject();
}
}
private void writeSettings(Settings settings, XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.SETTINGS);
settings.toXContent(builder, params);
builder.endObject();
}
private void writeWarmers(ImmutableList<IndexWarmersMetaData.Entry> warmers, XContentBuilder builder, Params params) throws IOException {
if (warmers != null) {
builder.startObject(Fields.WARMERS);
for (IndexWarmersMetaData.Entry warmer : warmers) {
IndexWarmersMetaData.FACTORY.toXContent(warmer, builder, params);
}
builder.endObject();
}
}
});
}
static class Fields {
static final XContentBuilderString ALIASES = new XContentBuilderString("aliases");
static final XContentBuilderString MAPPINGS = new XContentBuilderString("mappings");
static final XContentBuilderString SETTINGS = new XContentBuilderString("settings");
static final XContentBuilderString WARMERS = new XContentBuilderString("warmers");
}
}