org.eclipse.osee.ote.core/src/org/eclipse/osee/ote/core/environment/OteLogFile.java

/*******************************************************************************
 * Copyright (c) 2004, 2007 Boeing.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.ote.core.environment;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.eclipse.osee.framework.logging.ILoggerListener;

public class OteLogFile implements ILoggerListener {

   public Set<Logger> initializedLoggers;
   private final FileOutputStream fos;
   private final StringBuilder sb;
   private final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");

   public OteLogFile(File file) throws FileNotFoundException {
      fos = new FileOutputStream(file);
      sb = new StringBuilder();
   }

   @Override
   public synchronized void log(String loggerName, Level level, String message, Throwable th) {
      try {
         sb.append(String.format("<record name=\"%s\" level=\"%s\" >\n", loggerName, level.getName()));
         sb.append("<Time>");
         sb.append(sdf.format(new Date()));
         sb.append("</Time>\n");
         sb.append("<message>\n");
         sb.append(message);
         sb.append("\n");
         sb.append("</message>\n");
         if (th != null) {
            sb.append("<stacktrace>");
            writeStackTrace(sb, th);
            sb.append("</stacktrace>\n");
         }
         sb.append("</record>\n");
         fos.write(sb.toString().getBytes());
         fos.flush();
         sb.setLength(0);
      } catch (IOException ex) {
         ex.printStackTrace();
      }
   }

   private void writeStackTrace(StringBuilder sb, Throwable th) {
      while (th != null) {
         sb.append(th.getMessage());
         sb.append("\n");
         for (StackTraceElement el : th.getStackTrace()) {
            sb.append(el.toString());
            sb.append("\n");
         }
         th = th.getCause();
      }
   }

   @Override
   protected void finalize() throws Throwable {
      fos.close();
      super.finalize();
   }

}