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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
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 */
package org.glassfish.grizzly.http.server;

/**
 * Error page generator interface, which is responsible for generating of an
 * error page corresponding to the given response status.
 * 
 * The ErrorPageGenerator is mainly used by {@link Response#sendError(int)} and
 * {@link Response#sendError(int, java.lang.String)} methods.
 * 
 * The ErrorPageGenerator might be set per
 * 1) {@link HttpServer}: {@link HttpServer#getServerConfiguration()};
 * 2) {@link NetworkListener}: {@link NetworkListener#setDefaultErrorPageGenerator(org.glassfish.grizzly.http.server.ErrorPageGenerator)};
 * 3) {@link Response}: {@link Response#setErrorPageGenerator(org.glassfish.grizzly.http.server.ErrorPageGenerator)};
 */
public interface ErrorPageGenerator {
    /**
     * Returns the HTML representation of the error page corresponding to the
     * given HTTP response status.
     * 
     * @param request {@link Request}
     * @param status response status
     * @param reasonPhrase response reason phrase
     * @param description extra description. Might be null
     * @param exception {@link Throwable}, that caused the error. Might be null
     * @return 
     */
    public String generate(final Request request,
            final int status, final String reasonPhrase,
            final String description, final Throwable exception);
}