/*
* 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.index.reindex;
import org.elasticsearch.ElasticsearchParseException;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.script.Script;
import org.elasticsearch.script.ScriptType;
import java.io.IOException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.function.Consumer;
import static org.elasticsearch.rest.RestRequest.Method.POST;
import static org.elasticsearch.script.Script.DEFAULT_SCRIPT_LANG;
public class RestUpdateByQueryAction extends AbstractBulkByQueryRestHandler<UpdateByQueryRequest, UpdateByQueryAction> {
public RestUpdateByQueryAction(Settings settings, RestController controller) {
super(settings, UpdateByQueryAction.INSTANCE);
controller.registerHandler(POST, "/{index}/_update_by_query", this);
controller.registerHandler(POST, "/{index}/{type}/_update_by_query", this);
}
@Override
public RestChannelConsumer prepareRequest(RestRequest request, NodeClient client) throws IOException {
return doPrepareRequest(request, client, false, true);
}
@Override
@SuppressWarnings("unchecked")
protected UpdateByQueryRequest buildRequest(RestRequest request) throws IOException {
/*
* Passing the search request through UpdateByQueryRequest first allows
* it to set its own defaults which differ from SearchRequest's
* defaults. Then the parse can override them.
*/
UpdateByQueryRequest internal = new UpdateByQueryRequest(new SearchRequest());
Map<String, Consumer<Object>> consumers = new HashMap<>();
consumers.put("conflicts", o -> internal.setConflicts((String) o));
consumers.put("script", o -> internal.setScript(parseScript((Map<String, Object>)o)));
parseInternalRequest(internal, request, consumers);
internal.setPipeline(request.param("pipeline"));
return internal;
}
@SuppressWarnings("unchecked")
private static Script parseScript(Map<String, Object> config) {
String script = null;
ScriptType type = null;
String lang = DEFAULT_SCRIPT_LANG;
Map<String, Object> params = Collections.emptyMap();
for (Iterator<Map.Entry<String, Object>> itr = config.entrySet().iterator(); itr.hasNext();) {
Map.Entry<String, Object> entry = itr.next();
String parameterName = entry.getKey();
Object parameterValue = entry.getValue();
if (Script.LANG_PARSE_FIELD.match(parameterName)) {
if (parameterValue instanceof String || parameterValue == null) {
lang = (String) parameterValue;
} else {
throw new ElasticsearchParseException("Value must be of type String: [" + parameterName + "]");
}
} else if (Script.PARAMS_PARSE_FIELD.match(parameterName)) {
if (parameterValue instanceof Map || parameterValue == null) {
params = (Map<String, Object>) parameterValue;
} else {
throw new ElasticsearchParseException("Value must be of type String: [" + parameterName + "]");
}
} else if (ScriptType.INLINE.getParseField().match(parameterName)) {
if (parameterValue instanceof String || parameterValue == null) {
script = (String) parameterValue;
type = ScriptType.INLINE;
} else {
throw new ElasticsearchParseException("Value must be of type String: [" + parameterName + "]");
}
} else if (ScriptType.FILE.getParseField().match(parameterName)) {
if (parameterValue instanceof String || parameterValue == null) {
script = (String) parameterValue;
type = ScriptType.FILE;
} else {
throw new ElasticsearchParseException("Value must be of type String: [" + parameterName + "]");
}
} else if (ScriptType.STORED.getParseField().match(parameterName)) {
if (parameterValue instanceof String || parameterValue == null) {
script = (String) parameterValue;
type = ScriptType.STORED;
} else {
throw new ElasticsearchParseException("Value must be of type String: [" + parameterName + "]");
}
}
}
if (script == null) {
throw new ElasticsearchParseException("expected one of [{}], [{}] or [{}] fields, but found none",
ScriptType.INLINE.getParseField().getPreferredName(), ScriptType.FILE.getParseField()
.getPreferredName(), ScriptType.STORED.getParseField().getPreferredName());
}
assert type != null : "if script is not null, type should definitely not be null";
return new Script(type, lang, script, params);
}
}