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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.rest.action.admin.indices;
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.IndicesOptions;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.logging.DeprecationLogger;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.BytesRestResponse;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.action.RestActions;
import org.elasticsearch.rest.action.RestToXContentListener;
import java.io.IOException;
import java.util.List;
import static java.util.Arrays.asList;
import static java.util.Collections.unmodifiableList;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
import static org.elasticsearch.rest.RestStatus.OK;
public class RestValidateQueryAction extends BaseRestHandler {
private static final DeprecationLogger deprecationLogger = DeprecationLogger.getLogger(RestValidateQueryAction.class);
static final String TYPES_DEPRECATION_MESSAGE = "[types removal]" +
" Specifying types in validate query requests is deprecated.";
@Override
public List routes() {
return unmodifiableList(asList(
new Route(GET, "/_validate/query"),
new Route(POST, "/_validate/query"),
new Route(GET, "/{index}/_validate/query"),
new Route(POST, "/{index}/_validate/query"),
new Route(GET, "/{index}/{type}/_validate/query"),
new Route(POST, "/{index}/{type}/_validate/query")));
}
@Override
public String getName() {
return "validate_query_action";
}
@Override
public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
ValidateQueryRequest validateQueryRequest = new ValidateQueryRequest(Strings.splitStringByCommaToArray(request.param("index")));
validateQueryRequest.indicesOptions(IndicesOptions.fromRequest(request, validateQueryRequest.indicesOptions()));
validateQueryRequest.explain(request.paramAsBoolean("explain", false));
if (request.hasParam("type")) {
deprecationLogger.deprecate("validate_query_with_types", TYPES_DEPRECATION_MESSAGE);
validateQueryRequest.types(Strings.splitStringByCommaToArray(request.param("type")));
}
validateQueryRequest.rewrite(request.paramAsBoolean("rewrite", false));
validateQueryRequest.allShards(request.paramAsBoolean("all_shards", false));
Exception bodyParsingException = null;
try {
request.withContentOrSourceParamParserOrNull(parser -> {
if (parser != null) {
validateQueryRequest.query(RestActions.getQueryContent(parser));
} else if (request.hasParam("q")) {
validateQueryRequest.query(RestActions.urlParamsToQueryBuilder(request));
}
});
} catch (Exception e) {
bodyParsingException = e;
}
final Exception finalBodyParsingException = bodyParsingException;
return channel -> {
if (finalBodyParsingException != null) {
if (finalBodyParsingException instanceof ParsingException) {
handleException(validateQueryRequest, ((ParsingException) finalBodyParsingException).getDetailedMessage(), channel);
} else {
handleException(validateQueryRequest, finalBodyParsingException.getMessage(), channel);
}
} else {
client.admin().indices().validateQuery(validateQueryRequest, new RestToXContentListener<>(channel));
}
};
}
private void handleException(final ValidateQueryRequest request, final String message, final RestChannel channel) throws IOException {
channel.sendResponse(buildErrorResponse(channel.newBuilder(), message, request.explain()));
}
private static BytesRestResponse buildErrorResponse(XContentBuilder builder, String error, boolean explain) throws IOException {
builder.startObject();
builder.field(ValidateQueryResponse.VALID_FIELD, false);
if (explain) {
builder.field(QueryExplanation.ERROR_FIELD, error);
}
builder.endObject();
return new BytesRestResponse(OK, builder);
}
}