/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.ElasticSearchIllegalArgumentException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.alias.IndicesAliasesRequest;
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.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.XContentRestResponse;
import org.elasticsearch.rest.XContentThrowableRestResponse;
import java.io.IOException;
import java.util.Map;
import static org.elasticsearch.cluster.metadata.AliasAction.*;
import static org.elasticsearch.common.unit.TimeValue.*;
import static org.elasticsearch.rest.RestRequest.Method.*;
import static org.elasticsearch.rest.RestStatus.*;
import static org.elasticsearch.rest.action.support.RestXContentBuilder.*;
/**
* @author kimchy (shay.banon)
*/
public class RestIndicesAliasesAction extends BaseRestHandler {
@Inject public RestIndicesAliasesAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(POST, "/_aliases", this);
}
@Override public void handleRequest(final RestRequest request, final RestChannel channel) {
IndicesAliasesRequest indicesAliasesRequest = new IndicesAliasesRequest();
try {
// {
// actions : [
// { add : { index : "test1", alias : "alias1", filter : {"user" : "kimchy"} } }
// { remove : { index : "test1", alias : "alias1" } }
// ]
// }
indicesAliasesRequest.timeout(request.paramAsTime("timeout", timeValueSeconds(10)));
XContentParser parser = XContentFactory.xContent(request.contentByteArray(), request.contentByteArrayOffset(), request.contentLength())
.createParser(request.contentByteArray(), request.contentByteArrayOffset(), request.contentLength());
XContentParser.Token token = parser.nextToken();
if (token == null) {
throw new ElasticSearchIllegalArgumentException("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 ElasticSearchIllegalArgumentException("Alias action [" + action + "] not supported");
}
String index = null;
String alias = 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 == XContentParser.Token.VALUE_STRING) {
if ("index".equals(currentFieldName)) {
index = parser.text();
} else if ("alias".equals(currentFieldName)) {
alias = 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_OBJECT) {
if ("filter".equals(currentFieldName)) {
filter = parser.mapOrdered();
}
}
}
if (index == null) {
throw new ElasticSearchIllegalArgumentException("Alias action [" + action + "] requires an [index] to be set");
}
if (alias == null) {
throw new ElasticSearchIllegalArgumentException("Alias action [" + action + "] requires an [alias] to be set");
}
if (type == AliasAction.Type.ADD) {
AliasAction aliasAction = newAddAliasAction(index, alias).filter(filter);
if (routingSet) {
aliasAction.routing(routing);
}
if (indexRoutingSet) {
aliasAction.indexRouting(indexRouting);
}
if (searchRoutingSet) {
aliasAction.searchRouting(searchRouting);
}
indicesAliasesRequest.addAliasAction(aliasAction);
} else if (type == AliasAction.Type.REMOVE) {
indicesAliasesRequest.removeAlias(index, alias);
}
}
}
}
}
} catch (Exception e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.warn("Failed to send response", e1);
}
return;
}
client.admin().indices().aliases(indicesAliasesRequest, new ActionListener<IndicesAliasesResponse>() {
@Override public void onResponse(IndicesAliasesResponse response) {
try {
XContentBuilder builder = restContentBuilder(request);
builder.startObject()
.field("ok", true)
.field("acknowledged", response.acknowledged())
.endObject();
channel.sendResponse(new XContentRestResponse(request, OK, builder));
} catch (Exception 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);
}
}
});
}
}