/*
* Licensed to ElasticSearch and Shay Banon 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.validate.query;
import org.elasticsearch.rest.XContentRestResponse;
import org.elasticsearch.rest.XContentThrowableRestResponse;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.validate.query.QueryExplanation;
import org.elasticsearch.action.admin.indices.validate.query.ValidateQueryRequest;
import org.elasticsearch.action.admin.indices.validate.query.ValidateQueryResponse;
import org.elasticsearch.action.support.IgnoreIndices;
import org.elasticsearch.action.support.broadcast.BroadcastOperationThreading;
import org.elasticsearch.client.IndicesAdminClient;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
import static org.elasticsearch.rest.RestStatus.BAD_REQUEST;
import static org.elasticsearch.rest.RestStatus.OK;
import static org.elasticsearch.rest.action.support.RestActions.buildBroadcastShardsHeader;
import static org.elasticsearch.rest.action.support.RestActions.splitTypes;
/**
*
*/
public class RestValidateQueryAction extends BaseRestHandler<IndicesAdminClient> {
@Inject
public RestValidateQueryAction(Settings settings, IndicesAdminClient client, RestController controller) {
super(settings, client);
controller.registerHandler(GET, "/_validate/query", this);
controller.registerHandler(POST, "/_validate/query", this);
controller.registerHandler(GET, "/{index}/_validate/query", this);
controller.registerHandler(POST, "/{index}/_validate/query", this);
controller.registerHandler(GET, "/{index}/{type}/_validate/query", this);
controller.registerHandler(POST, "/{index}/{type}/_validate/query", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
ValidateQueryRequest validateQueryRequest = new ValidateQueryRequest(RestActions.splitIndices(request.param("index")));
validateQueryRequest.listenerThreaded(false);
if (request.hasParam("ignore_indices")) {
validateQueryRequest.ignoreIndices(IgnoreIndices.fromString(request.param("ignore_indices")));
}
try {
BroadcastOperationThreading operationThreading = BroadcastOperationThreading.fromString(request.param("operation_threading"), BroadcastOperationThreading.SINGLE_THREAD);
if (operationThreading == BroadcastOperationThreading.NO_THREADS) {
// since we don't spawn, don't allow no_threads, but change it to a single thread
operationThreading = BroadcastOperationThreading.SINGLE_THREAD;
}
validateQueryRequest.operationThreading(operationThreading);
if (request.hasContent()) {
validateQueryRequest.query(request.content(), request.contentUnsafe());
} else {
String source = request.param("source");
if (source != null) {
validateQueryRequest.query(source);
} else {
BytesReference querySource = RestActions.parseQuerySource(request);
if (querySource != null) {
validateQueryRequest.query(querySource, false);
}
}
}
validateQueryRequest.types(splitTypes(request.param("type")));
if (request.paramAsBoolean("explain", false)) {
validateQueryRequest.explain(true);
} else {
validateQueryRequest.explain(false);
}
} catch (Exception e) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
channel.sendResponse(new XContentRestResponse(request, BAD_REQUEST, builder.startObject().field("error", e.getMessage()).endObject()));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
return;
}
client.validateQuery(validateQueryRequest, new ActionListener<ValidateQueryResponse>() {
@Override
public void onResponse(ValidateQueryResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
builder.field("valid", response.valid());
buildBroadcastShardsHeader(builder, response);
if (response.queryExplanations() != null && !response.queryExplanations().isEmpty()) {
builder.startArray("explanations");
for (QueryExplanation explanation : response.queryExplanations()) {
builder.startObject();
if (explanation.index() != null) {
builder.field("index", explanation.index(), XContentBuilder.FieldCaseConversion.NONE);
}
builder.field("valid", explanation.valid());
if (explanation.error() != null) {
builder.field("error", explanation.error());
}
if (explanation.explanation() != null) {
builder.field("explanation", explanation.explanation());
}
builder.endObject();
}
builder.endArray();
}
builder.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);
}
}
});
}
}