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Logback appender for sending GELF messages with zero additional dependencies.

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/*
 * Logback GELF - zero dependencies Logback GELF appender library.
 * Copyright (C) 2016 Oliver Siegmar
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package de.siegmar.logbackgelf.compressor;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UncheckedIOException;

public interface Compressor {

    default byte[] compress(final byte[] binMessage) {
        final var bos = new ByteArrayOutputStream(binMessage.length);
        try (var wrappedOut = wrap(bos)) {
            wrappedOut.write(binMessage);
        } catch (final IOException e) {
            throw new UncheckedIOException(e);
        }
        return bos.toByteArray();
    }

    default OutputStream wrap(final OutputStream out) throws IOException {
        return out;
    }

}