Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core.recovery;

import java.io.*;
import java.nio.channels.FileChannel;

public class ResilientFileOutputStream extends ResilientOutputStreamBase {

    private File file;
    private FileOutputStream fos;

    public ResilientFileOutputStream(File file, boolean append, long bufferSize) throws FileNotFoundException {
        this.file = file;
        fos = new FileOutputStream(file, append);
        this.os = new BufferedOutputStream(fos, (int) bufferSize);
        this.presumedClean = true;
    }

    public FileChannel getChannel() {
        if (os == null) {
            return null;
        }
        return fos.getChannel();
    }

    public File getFile() {
        return file;
    }

    @Override
    String getDescription() {
        return "file [" + file + "]";
    }

    @Override
    OutputStream openNewOutputStream() throws IOException {
        // see LOGBACK-765
        fos = new FileOutputStream(file, true);
        return new BufferedOutputStream(fos);
    }

    @Override
    public String toString() {
        return "c.q.l.c.recovery.ResilientFileOutputStream@" + System.identityHashCode(this);
    }

}