Package org.objectweb.util.monolog.wrapper.log4j

Source Code of org.objectweb.util.monolog.wrapper.log4j.FileHandler

/**
* Copyright (C) 2001-2003 France Telecom R&D
*
* 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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

package org.objectweb.util.monolog.wrapper.log4j;

import org.apache.log4j.FileAppender;
import org.apache.log4j.PatternLayout;
import org.objectweb.util.monolog.Monolog;
import org.objectweb.util.monolog.api.Handler;
import org.objectweb.util.monolog.api.MonologFactory;
import org.objectweb.util.monolog.wrapper.common.RelatifEnvironmentPathGetter;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
* This class is the wrapper to the org.apache.log4j.FileAppender
*
* @author Sebastien Chassande-Barrioz
*/
public class FileHandler extends FileAppender implements Handler {

  /**
   * This fields contains the properties of the Handler
   */
  protected HashMap prop = null;

  public FileHandler() {
    super();
  }

  /**
   * It Builds a new FileHandler.
   * @param name   is the handler name.
   */
  public FileHandler(String name) {
    super();
    setName(name);
    prop = new HashMap();
  }

  public Map getAttributes() {
    return prop;
  }

  public void setAttributes(Map attributes) {
    prop.clear();
    prop.putAll(attributes);
    Object mf = prop.get("activation");
    if (mf != null) {
        prop.remove("activation");
        setAttribute("activation", mf);
    }
  }

  // IMPLEMENTATION OF THE Handler INTERFACE //
  //---------------------------------------------//

  public String getType() {
    return "file";
  }

  public String[] getAttributeNames() {
    return (String[]) prop.keySet().toArray(new String[0]);
  }

  public Object getAttribute(String key) {
    return prop.get(key);
  }

  public Object setAttribute(String key, Object value) {
    if (prop == null) {
      prop = new HashMap();
    }
    if (!key.equalsIgnoreCase("activation")) {
      return prop.put(key, value);
    } else if (prop.containsKey(key)) {
        return null; //already activated
    }
    MonologFactory mf = (MonologFactory) value;
    String output = (String) prop.get(Handler.OUTPUT_ATTRIBUTE);
    output = RelatifEnvironmentPathGetter.getRealPath(output);
    String append = (String) prop.get(Handler.APPEND_MODE_ATTRIBUTE);
    if (append != null && append.length() > 0) {
      fileAppend = Boolean.getBoolean(append);
    } else {
      fileAppend = true;
    }
   
    String buffersize = (String) prop.get(Handler.BUFFER_ATTRIBUTE);
    if (buffersize != null && buffersize.length() > 0) {
      try {
                setBufferSize(Integer.valueOf(buffersize).intValue());
            } catch (NumberFormatException e) {
                Monolog.error("Bad specified buffer size for the handler '"
                        + name + "': " + buffersize, e);
            }
    }
   
    try {
      setFile(output, fileAppend, bufferedIO, bufferSize);
    } catch (IOException e) {
            Monolog.error("Error during the creation of the handler '"
                    + name + "': ", e);
    }

    String pattern = (String) prop.get(Handler.PATTERN_ATTRIBUTE);
    setLayout(new PatternLayout(PatternConverter.monolog2log4j(pattern)));

    String level = (String) prop.get(Handler.LEVEL_ATTRIBUTE);
    if (level != null && level.length() > 0) {
      int levelVal = org.objectweb.util.monolog.wrapper.common.LevelImpl.evaluate(level, mf);
      setThreshold(org.apache.log4j.Level.toLevel(levelVal));
    }
   
    super.activateOptions();
    return null;
  }

}
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