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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.script.mustache;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ObjectParser;
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.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.action.RestStatusToXContentListener;
import org.elasticsearch.rest.action.search.RestSearchAction;
import org.elasticsearch.script.ScriptType;
import java.io.IOException;
import java.util.Collections;
import java.util.Set;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
public class RestSearchTemplateAction extends BaseRestHandler {
private static final Set<String> RESPONSE_PARAMS = Collections.singleton(RestSearchAction.TYPED_KEYS_PARAM);
private static final ObjectParser<SearchTemplateRequest, Void> PARSER;
static {
PARSER = new ObjectParser<>("search_template");
PARSER.declareField((parser, request, s) ->
request.setScriptParams(parser.map())
, new ParseField("params"), ObjectParser.ValueType.OBJECT);
PARSER.declareString((request, s) -> {
request.setScriptType(ScriptType.STORED);
request.setScript(s);
}, new ParseField("id"));
PARSER.declareBoolean(SearchTemplateRequest::setExplain, new ParseField("explain"));
PARSER.declareBoolean(SearchTemplateRequest::setProfile, new ParseField("profile"));
PARSER.declareField((parser, request, value) -> {
request.setScriptType(ScriptType.INLINE);
if (parser.currentToken() == XContentParser.Token.START_OBJECT) {
//convert the template to json which is the only supported XContentType (see CustomMustacheFactory#createEncoder)
try (XContentBuilder builder = XContentFactory.jsonBuilder()) {
request.setScript(builder.copyCurrentStructure(parser).string());
} catch (IOException e) {
throw new ParsingException(parser.getTokenLocation(), "Could not parse inline template", e);
}
} else {
request.setScript(parser.text());
}
}, new ParseField("source", "inline", "template"), ObjectParser.ValueType.OBJECT_OR_STRING);
}
public RestSearchTemplateAction(Settings settings, RestController controller) {
super(settings);
controller.registerHandler(GET, "/_search/template", this);
controller.registerHandler(POST, "/_search/template", this);
controller.registerHandler(GET, "/{index}/_search/template", this);
controller.registerHandler(POST, "/{index}/_search/template", this);
controller.registerHandler(GET, "/{index}/{type}/_search/template", this);
controller.registerHandler(POST, "/{index}/{type}/_search/template", this);
}
@Override
public String getName() {
return "search_template_action";
}
@Override
public RestChannelConsumer prepareRequest(RestRequest request, NodeClient client) throws IOException {
// Creates the search request with all required params
SearchRequest searchRequest = new SearchRequest();
RestSearchAction.parseSearchRequest(searchRequest, request, null);
// Creates the search template request
SearchTemplateRequest searchTemplateRequest;
try (XContentParser parser = request.contentOrSourceParamParser()) {
searchTemplateRequest = PARSER.parse(parser, new SearchTemplateRequest(), null);
}
searchTemplateRequest.setRequest(searchRequest);
return channel -> client.execute(SearchTemplateAction.INSTANCE, searchTemplateRequest, new RestStatusToXContentListener<>(channel));
}
public static SearchTemplateRequest parse(XContentParser parser) throws IOException {
return PARSER.parse(parser, new SearchTemplateRequest(), null);
}
@Override
protected Set<String> responseParams() {
return RESPONSE_PARAMS;
}
}
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