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Elasticsearch subproject :server
/*
* 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.rest;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.common.xcontent.XContent;
/**
* Handler for REST requests
*/
public interface RestHandler {
/**
* Handles a rest request.
* @param request The request to handle
* @param channel The channel to write the request response to
* @param client A client to use to make internal requests on behalf of the original request
*/
void handleRequest(RestRequest request, RestChannel channel, NodeClient client) throws Exception;
default boolean canTripCircuitBreaker() {
return true;
}
/**
* Indicates if the RestHandler supports content as a stream. A stream would be multiple objects delineated by
* {@link XContent#streamSeparator()}. If a handler returns true this will affect the types of content that can be sent to
* this endpoint.
*/
default boolean supportsContentStream() {
return false;
}
/**
* Indicates if the RestHandler supports working with pooled buffers. If the request handler will not escape the return
* {@link RestRequest#content()} or any buffers extracted from it then there is no need to make a copies of any pooled buffers in the
* {@link RestRequest} instance before passing a request to this handler. If this instance does not support pooled/unsafe buffers
* {@link RestRequest#ensureSafeBuffers()} should be called on any request before passing it to {@link #handleRequest}.
*
* @return true iff the handler supports requests that make use of pooled buffers
*/
default boolean allowsUnsafeBuffers() {
return false;
}
}