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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.action.ActionListener;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.TransportSearchAction;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.HandledTransportAction;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryParseContext;
import org.elasticsearch.script.CompiledScript;
import org.elasticsearch.script.ExecutableScript;
import org.elasticsearch.script.Script;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.Collections;
import static org.elasticsearch.script.ScriptContext.Standard.SEARCH;
public class TransportSearchTemplateAction extends HandledTransportAction<SearchTemplateRequest, SearchTemplateResponse> {
private static final String TEMPLATE_LANG = MustacheScriptEngineService.NAME;
private final ScriptService scriptService;
private final TransportSearchAction searchAction;
private final NamedXContentRegistry xContentRegistry;
@Inject
public TransportSearchTemplateAction(Settings settings, ThreadPool threadPool, TransportService transportService,
ActionFilters actionFilters, IndexNameExpressionResolver resolver,
ScriptService scriptService,
TransportSearchAction searchAction,
NamedXContentRegistry xContentRegistry) {
super(settings, SearchTemplateAction.NAME, threadPool, transportService, actionFilters, resolver, SearchTemplateRequest::new);
this.scriptService = scriptService;
this.searchAction = searchAction;
this.xContentRegistry = xContentRegistry;
}
@Override
protected void doExecute(SearchTemplateRequest request, ActionListener<SearchTemplateResponse> listener) {
final SearchTemplateResponse response = new SearchTemplateResponse();
try {
Script script = new Script(request.getScriptType(), TEMPLATE_LANG, request.getScript(),
request.getScriptParams() == null ? Collections.emptyMap() : request.getScriptParams());
CompiledScript compiledScript = scriptService.compile(script, SEARCH);
ExecutableScript executable = scriptService.executable(compiledScript, script.getParams());
BytesReference source = (BytesReference) executable.run();
response.setSource(source);
if (request.isSimulate()) {
listener.onResponse(response);
return;
}
// Executes the search
SearchRequest searchRequest = request.getRequest();
//we can assume the template is always json as we convert it before compiling it
try (XContentParser parser = XContentFactory.xContent(XContentType.JSON).createParser(xContentRegistry, source)) {
SearchSourceBuilder builder = SearchSourceBuilder.searchSource();
builder.parseXContent(new QueryParseContext(parser));
builder.explain(request.isExplain());
builder.profile(request.isProfile());
searchRequest.source(builder);
searchAction.execute(searchRequest, new ActionListener<SearchResponse>() {
@Override
public void onResponse(SearchResponse searchResponse) {
try {
response.setResponse(searchResponse);
listener.onResponse(response);
} catch (Exception t) {
listener.onFailure(t);
}
}
@Override
public void onFailure(Exception t) {
listener.onFailure(t);
}
});
}
} catch (Exception t) {
listener.onFailure(t);
}
}
}
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