be.vlaanderen.sesam.monitor.internal.util.BodyUtils.java Source code

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Here is the source code for be.vlaanderen.sesam.monitor.internal.util.BodyUtils.java

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/*
 * Copyright 2011 Vlaams Gewest
 *
 * This file is part of SESAM, the Service Endpoint Security And Monitoring framework.
 *
 * SESAM is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * SESAM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with SESAM.  If not, see <http://www.gnu.org/licenses/>.
 */

package be.vlaanderen.sesam.monitor.internal.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.codec.digest.DigestUtils;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.FileCopyUtils;

public class BodyUtils {

    private static final Logger log = LoggerFactory.getLogger(BodyUtils.class);

    private BodyUtils() {
    }

    public static String getMd5Sum(File f) {
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(f);
            String res = DigestUtils.md5Hex(fis);
            log.debug("Hashed file: {} -- {}", f.getName(), res);
            return res;
        } catch (IOException e) {
            log.warn("Failed calculating MD5sum. " + e.getMessage());
            return null;
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                }
            }
        }
    }

    /**
     * Inputstream is not closed.
     * 
     * @param f
     * @return
     */
    public static String getMd5Sum(InputStream is) {
        try {
            String res = DigestUtils.md5Hex(is);
            log.debug("Hashed a stream: {}", res);
            return res;
        } catch (IOException e) {
            log.warn("Failed calculating MD5sum. " + e.getMessage());
            return null;
        }
    }

    public static ChannelBuffer fileToBuffer(File f) throws IOException {
        FileInputStream fis = new FileInputStream(f);
        byte[] buf = FileCopyUtils.copyToByteArray(fis);
        ChannelBuffer wcb = ChannelBuffers.wrappedBuffer(buf);
        return wcb;
    }
}