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relay.js-compatible GraphQL servlet

There is a newer version: 16.0.0

package graphql.servlet;

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

/**
 * @author Andrew Potter
 */
public interface GraphQLServletListener {
    default RequestCallback onRequest(HttpServletRequest request, HttpServletResponse response) {
        return null;
    }

    interface RequestCallback {
        default void onSuccess(HttpServletRequest request, HttpServletResponse response) {}
        default void onError(HttpServletRequest request, HttpServletResponse response, Throwable throwable) {}
        default void onFinally(HttpServletRequest request, HttpServletResponse response) {}
    }
}