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relay.js-compatible GraphQL servlet

There is a newer version: 6.1.3

/**
 * Copyright 2016 Yurii Rashkovskii
 *
 * Licensed 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
 */
package graphql.servlet;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author Andrew Potter
 */
public interface GraphQLServletListener {
    default void onStart(HttpServletRequest request, HttpServletResponse response) {}
    default void onError(HttpServletRequest request, HttpServletResponse response, Throwable throwable) {}
    default void onFinally(HttpServletRequest request, HttpServletResponse response) {}
}