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 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF 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   *
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 *   http://www.apache.org/licenses/LICENSE-2.0                 *
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 * 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    *
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 * under the License.                                           *
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package org.apache.james.webadmin.mdc;

import java.io.Closeable;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import spark.Filter;
import spark.Request;
import spark.Response;

public class MDCCleanupFilter implements Filter {
    private static final Logger LOGGER = LoggerFactory.getLogger(MDCCleanupFilter.class);

    @Override
    public void handle(Request request, Response response) throws Exception {
        Object attribute = request.attribute(MDCFilter.MDC_CLOSEABLE);
        if (attribute instanceof Closeable) {
            Closeable closeable = (Closeable) attribute;
            closeable.close();
        } else {
            LOGGER.error("Invalid MDC closeable {} of class {}", attribute, attribute.getClass());
        }
    }
}
