org.elasticsearch.rest.action.admin.indices.alias.get.RestIndicesGetAliasesAction Maven / Gradle / Ivy
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* Licensed to ElasticSearch and Shay Banon under one
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* 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
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*/
package org.elasticsearch.rest.action.admin.indices.alias.get;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.alias.get.IndicesGetAliasesRequest;
import org.elasticsearch.action.admin.indices.alias.get.IndicesGetAliasesResponse;
import org.elasticsearch.action.support.IgnoreIndices;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.metadata.AliasMetaData;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestStatus.OK;
/**
*/
public class RestIndicesGetAliasesAction extends BaseRestHandler {
@Inject
public RestIndicesGetAliasesAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(GET, "/_alias/{name}", this);
controller.registerHandler(GET, "/{index}/_alias/{name}", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
String[] aliases = request.paramAsStringArray("name", Strings.EMPTY_ARRAY);
final String[] indices = RestActions.splitIndices(request.param("index"));
IndicesGetAliasesRequest getAliasesRequest = new IndicesGetAliasesRequest(aliases);
getAliasesRequest.indices(indices);
if (request.hasParam("ignore_indices")) {
getAliasesRequest.ignoreIndices(IgnoreIndices.fromString(request.param("ignore_indices")));
}
client.admin().indices().getAliases(getAliasesRequest, new ActionListener() {
@Override
public void onResponse(IndicesGetAliasesResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
for (Map.Entry> entry : response.getAliases().entrySet()) {
builder.startObject(entry.getKey(), XContentBuilder.FieldCaseConversion.NONE);
builder.startObject(Fields.ALIASES);
for (AliasMetaData alias : entry.getValue()) {
AliasMetaData.Builder.toXContent(alias, builder, ToXContent.EMPTY_PARAMS);
}
builder.endObject();
builder.endObject();
}
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, OK, builder));
} catch (Throwable e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
static class Fields {
static final XContentBuilderString ALIASES = new XContentBuilderString("aliases");
}
}