001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.core.recovery; 015 016import java.io.*; 017import java.nio.channels.FileChannel; 018 019public class ResilientFileOutputStream extends ResilientOutputStreamBase { 020 021 private File file; 022 private FileOutputStream fos; 023 024 public ResilientFileOutputStream(File file, boolean append, long bufferSize) throws FileNotFoundException { 025 this.file = file; 026 fos = new FileOutputStream(file, append); 027 this.os = new BufferedOutputStream(fos, (int) bufferSize); 028 this.presumedClean = true; 029 } 030 031 public FileChannel getChannel() { 032 if (os == null) { 033 return null; 034 } 035 return fos.getChannel(); 036 } 037 038 public File getFile() { 039 return file; 040 } 041 042 @Override 043 String getDescription() { 044 return "file [" + file + "]"; 045 } 046 047 @Override 048 OutputStream openNewOutputStream() throws IOException { 049 // see LOGBACK-765 050 fos = new FileOutputStream(file, true); 051 return new BufferedOutputStream(fos); 052 } 053 054 @Override 055 public String toString() { 056 return "c.q.l.c.recovery.ResilientFileOutputStream@" + System.identityHashCode(this); 057 } 058 059}