/*
* 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.alias;
import org.elasticsearch.action.admin.indices.alias.IndicesAliasesRequest;
import org.elasticsearch.action.admin.indices.alias.IndicesAliasesRequest.AliasActions;
import org.elasticsearch.action.admin.indices.alias.IndicesAliasesResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.metadata.AliasAction;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.AcknowledgedRestListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.rest.RestRequest.Method.POST;
/**
*
*/
public class RestIndicesAliasesAction extends BaseRestHandler {
@Inject
public RestIndicesAliasesAction(Settings settings, RestController controller, Client client) {
super(settings, controller, client);
controller.registerHandler(POST, "/_aliases", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) throws Exception {
IndicesAliasesRequest indicesAliasesRequest = new IndicesAliasesRequest();
indicesAliasesRequest.masterNodeTimeout(request.paramAsTime("master_timeout", indicesAliasesRequest.masterNodeTimeout()));
try (XContentParser parser = XContentFactory.xContent(request.content()).createParser(request.content())) {
// {
// actions : [
// { add : { index : "test1", alias : "alias1", filter : {"user" : "kimchy"} } }
// { remove : { index : "test1", alias : "alias1" } }
// ]
// }
indicesAliasesRequest.timeout(request.paramAsTime("timeout", indicesAliasesRequest.timeout()));
XContentParser.Token token = parser.nextToken();
if (token == null) {
throw new IllegalArgumentException("No action is specified");
}
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.START_ARRAY) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
if (token == XContentParser.Token.FIELD_NAME) {
String action = parser.currentName();
AliasAction.Type type;
if ("add".equals(action)) {
type = AliasAction.Type.ADD;
} else if ("remove".equals(action)) {
type = AliasAction.Type.REMOVE;
} else {
throw new IllegalArgumentException("Alias action [" + action + "] not supported");
}
String[] indices = null;
String[] aliases = null;
Map<String, Object> filter = null;
String routing = null;
boolean routingSet = false;
String indexRouting = null;
boolean indexRoutingSet = false;
String searchRouting = null;
boolean searchRoutingSet = false;
String currentFieldName = null;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if ("index".equals(currentFieldName)) {
indices = new String[] { parser.text() };
} else if ("alias".equals(currentFieldName)) {
aliases = new String[] { parser.text() };
} else if ("routing".equals(currentFieldName)) {
routing = parser.textOrNull();
routingSet = true;
} else if ("indexRouting".equals(currentFieldName) || "index-routing".equals(currentFieldName) || "index_routing".equals(currentFieldName)) {
indexRouting = parser.textOrNull();
indexRoutingSet = true;
} else if ("searchRouting".equals(currentFieldName) || "search-routing".equals(currentFieldName) || "search_routing".equals(currentFieldName)) {
searchRouting = parser.textOrNull();
searchRoutingSet = true;
}
} else if (token == XContentParser.Token.START_ARRAY) {
if ("indices".equals(currentFieldName)) {
List<String> indexNames = new ArrayList<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
String index = parser.text();
indexNames.add(index);
}
indices = indexNames.toArray(new String[indexNames.size()]);
}
if ("aliases".equals(currentFieldName)) {
List<String> aliasNames = new ArrayList<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
String alias = parser.text();
aliasNames.add(alias);
}
aliases = aliasNames.toArray(new String[aliasNames.size()]);
}
} else if (token == XContentParser.Token.START_OBJECT) {
if ("filter".equals(currentFieldName)) {
filter = parser.mapOrdered();
}
}
}
if (type == AliasAction.Type.ADD) {
AliasActions aliasActions = new AliasActions(type, indices, aliases).filter(filter);
if (routingSet) {
aliasActions.routing(routing);
}
if (indexRoutingSet) {
aliasActions.indexRouting(indexRouting);
}
if (searchRoutingSet) {
aliasActions.searchRouting(searchRouting);
}
indicesAliasesRequest.addAliasAction(aliasActions);
} else if (type == AliasAction.Type.REMOVE) {
indicesAliasesRequest.removeAlias(indices, aliases);
}
}
}
}
}
}
client.admin().indices().aliases(indicesAliasesRequest, new AcknowledgedRestListener<IndicesAliasesResponse>(channel));
}
}