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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.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.GetIndexRequest.Feature;
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.BaseRestHandler;
import org.elasticsearch.rest.BytesRestResponse;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
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[] featureParams = request.paramAsStringArray("type", null);
// Work out if the indices is a list of features
if (featureParams == null && indices.length > 0 && indices[0] != null && indices[0].startsWith("_") && !"_all".equals(indices[0])) {
featureParams = indices;
indices = new String[] {"_all"};
}
final GetIndexRequest getIndexRequest = new GetIndexRequest();
getIndexRequest.indices(indices);
if (featureParams != null) {
Feature[] features = Feature.convertToFeatures(featureParams);
getIndexRequest.features(features);
}
// The order of calls to the request is important here. We must set the indices and features before
// we call getIndexRequest.indicesOptions(); or we might get the wrong default indices options
IndicesOptions defaultIndicesOptions = getIndexRequest.indicesOptions();
getIndexRequest.indicesOptions(IndicesOptions.fromRequest(request, defaultIndicesOptions));
getIndexRequest.local(request.paramAsBoolean("local", getIndexRequest.local()));
client.admin().indices().getIndex(getIndexRequest, new RestBuilderListener(channel) {
@Override
public RestResponse buildResponse(GetIndexResponse response, XContentBuilder builder) throws Exception {
Feature[] features = getIndexRequest.featuresAsEnums();
String[] indices = response.indices();
builder.startObject();
for (String index : indices) {
builder.startObject(index);
for (Feature feature : features) {
switch (feature) {
case ALIASES:
writeAliases(response.aliases().get(index), builder, request);
break;
case MAPPINGS:
writeMappings(response.mappings().get(index), builder, request);
break;
case SETTINGS:
writeSettings(response.settings().get(index), builder, request);
break;
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 aliases, XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.ALIASES);
if (aliases != null) {
for (AliasMetaData alias : aliases) {
AliasMetaData.Builder.toXContent(alias, builder, params);
}
}
builder.endObject();
}
private void writeMappings(ImmutableOpenMap mappings, XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.MAPPINGS);
if (mappings != null) {
for (ObjectObjectCursor 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 warmers, XContentBuilder builder, Params params) throws IOException {
builder.startObject(Fields.WARMERS);
if (warmers != null) {
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");
}
}