Log4jFileAppender.java

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*
* Pentaho Data Integration
*
* Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* Licensed 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
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.pentaho.di.core.logging;

import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.vfs2.FileObject;
import org.apache.log4j.Appender;
import org.apache.log4j.Layout;
import org.apache.log4j.spi.ErrorHandler;
import org.apache.log4j.spi.Filter;
import org.apache.log4j.spi.LoggingEvent;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.vfs.KettleVFS;

public class Log4jFileAppender implements Appender {
  private Layout layout;
  private Filter filter;

  private FileObject file;

  private String name;

  private OutputStream fileOutputStream;

  public Log4jFileAppender( FileObject file ) throws IOException {
    this.file = file;

    fileOutputStream = KettleVFS.getOutputStream( file, false );
  }

  public Log4jFileAppender( FileObject file, boolean append ) throws IOException {
    this.file = file;

    fileOutputStream = KettleVFS.getOutputStream( file, append );
  }

  public void addFilter( Filter filter ) {
    this.filter = filter;
  }

  public Filter getFilter() {
    return filter;
  }

  public void clearFilters() {
    filter = null;
  }

  public void close() {
    try {
      fileOutputStream.close();
    } catch ( IOException e ) {
      System.out.println( "Unable to close Logging file [" + file.getName() + "] : " + e.getMessage() );
    }
  }

  public void doAppend( LoggingEvent event ) {
    String line = layout.format( event ) + Const.CR;
    try {
      fileOutputStream.write( line.getBytes( Const.XML_ENCODING ) );
    } catch ( IOException e ) {
      System.out.println( "Unable to close Logging file [" + file.getName() + "] : " + e.getMessage() );
    }
  }

  public void setName( String name ) {
    this.name = name;
  }

  public String getName() {
    return name;
  }

  public void setErrorHandler( ErrorHandler arg0 ) {
  }

  public ErrorHandler getErrorHandler() {
    return null;
  }

  public void setLayout( Layout layout ) {
    this.layout = layout;
  }

  public Layout getLayout() {
    return layout;
  }

  public boolean requiresLayout() {
    return true;
  }

  public FileObject getFile() {
    return file;
  }

  public void setFilename( FileObject file ) {
    this.file = file;
  }

  public OutputStream getFileOutputStream() {
    return fileOutputStream;
  }

  public void setFileOutputStream( OutputStream fileOutputStream ) {
    this.fileOutputStream = fileOutputStream;
  }

  public void setFilter( Filter filter ) {
    this.filter = filter;
  }
}