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From vin...@apache.org
Subject cvs commit: jakarta-avalon-apps/sevak/src/java/org/apache/avalon/apps/sevak/util CustomWebappLoader.java CatalinaLogger.java
Date Fri, 28 Jun 2002 05:02:54 GMT
vinayc      2002/06/27 22:02:54

  Added:       sevak/src/java/org/apache/avalon/apps/sevak/util
                        CustomWebappLoader.java CatalinaLogger.java
  Log:
  Sevak - Catalina Wrapper
  
  Revision  Changes    Path
  1.1                  jakarta-avalon-apps/sevak/src/java/org/apache/avalon/apps/sevak/util/CustomWebappLoader.java
  
  Index: CustomWebappLoader.java
  ===================================================================
  /*
   * Copyright (C) The Apache Software Foundation. All rights reserved.
   *
   * This software is published under the terms of the Apache Software License
   * version 1.1, a copy of which has been included with this distribution in
   * the LICENSE file.
   */
  package org.apache.avalon.apps.sevak.util;
  
  import org.apache.catalina.loader.WebappLoader;
  import org.apache.catalina.LifecycleException;
  
  /**
   * Tomcat ClassLoader Hack to make Catalina run over Avalon/Phoenix .
   *
   * @author  Vinay Chandran<vinayc77@yahoo.com>
   * @version 1.0
   */
  
  public class CustomWebappLoader extends WebappLoader
  {
  
      private boolean m_started = false;
  
      /**
        * Start this component, initializing our associated class loader.
        *
        * @exception LifecycleException if a lifecycle error occurs
        */
      public void start() throws LifecycleException
      {
          //Prevent the LifecycleException by preventing any further calls made 
          // to the base implementation to ' start' again
          if (m_started)
          {
              return;
          }
          m_started = true;
          super.start();
  
      }
  
      /**
       *  Constructor 
       * @param classLoader ClassLoader
       */
      public CustomWebappLoader(ClassLoader classLoader)
      {
          super(classLoader);
      }
  }
  
  
  
  1.1                  jakarta-avalon-apps/sevak/src/java/org/apache/avalon/apps/sevak/util/CatalinaLogger.java
  
  Index: CatalinaLogger.java
  ===================================================================
  /*
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * [Additional notices, if required by prior licensing conditions]
   *
   */
  
  package org.apache.avalon.apps.sevak.util;
  
  //catalina imports
  import java.beans.PropertyChangeListener;
  import java.beans.PropertyChangeSupport;
  import java.io.CharArrayWriter;
  import java.io.PrintWriter;
  
  import javax.servlet.ServletException;
  
  import org.apache.avalon.framework.logger.LogEnabled;
  import org.apache.catalina.Container;
  import org.apache.catalina.LifecycleException;
  /**
   * Simple implementation of <b>Logger</b> that invokes Avalon Logger.
   *
   * @author Vinay Chandran<vinayc77@yahoo.com>
   * @author Craig R. McClanahan
   */
  
  public class CatalinaLogger implements LogEnabled, org.apache.catalina.Logger
  {
  
      /**
       * The descriptive information about this implementation.
       */
      private static final String m_info =
          "org.apache.avalon.sevak.util.CatalinaLogger/1.0";
  
      /** Avalon-Catalina Logger bridge*/
      private org.apache.avalon.framework.logger.Logger m_avalonLogger = null;
  
      /**
       * Provide component with a logger.
       *
       * @param logger the logger
       */
      public void enableLogging(org.apache.avalon.framework.logger.Logger logger)
      {
          m_avalonLogger = logger;
      }
  
      /**
       * Writes the specified message to a servlet log file, usually an event
       * log.  The name and type of the servlet log is specific to the
       * servlet container.
       *
       * @param msg A <code>String</code> specifying the message to be written
       *  to the log file
       */
      public void log(String msg)
      {
  
          switch (getVerbosity())
          {
              case org.apache.catalina.Logger.FATAL :
                  m_avalonLogger.fatalError(msg);
                  break;
              case org.apache.catalina.Logger.ERROR :
                  m_avalonLogger.error(msg);
                  break;
              case org.apache.catalina.Logger.WARNING :
                  m_avalonLogger.warn(msg);
                  break;
              case org.apache.catalina.Logger.INFORMATION :
                  m_avalonLogger.info(msg);
                  break;
              case org.apache.catalina.Logger.DEBUG :
                  m_avalonLogger.debug(msg);
                  break;
  
          }
  
      }
  
      // ****** Liberally copied from org.apache.catalina.logger.LoggerBase
  
      // ----------------------------------------------------- Instance Variables
  
      /**
       * The Container with which this Logger has been associated.
       */
      protected Container container = null;
  
      /**
       * The debugging detail level for this component.
       */
      protected int debug = 0;
  
      /**
       * The property change support for this component.
       */
      protected PropertyChangeSupport support = new PropertyChangeSupport(this);
  
      /**
       * The verbosity level for above which log messages may be filtered.
       */
      protected int verbosity = ERROR;
  
      /**
       * @see org.apache.catalina.Logger#getContainer()
       */
  
      // ------------------------------------------------------------- Properties
  
      /**
       * Return the Container with which this Logger has been associated.
       * @return Container Return the container
       */
      public Container getContainer()
      {
  
          return (container);
  
      }
  
      /**
       * Set the Container with which this Logger has been associated.
       *
       * @param container The associated Container
       */
      public void setContainer(Container container)
      {
  
          Container oldContainer = this.container;
          this.container = container;
          support.firePropertyChange("container", oldContainer, this.container);
  
      }
  
      /**
       * Return the debugging detail level for this component.
       * @return int 
       */
      public int getDebug()
      {
  
          return (this.debug);
  
      }
  
      /**
       * Set the debugging detail level for this component.
       *
       * @param debug The new debugging detail level
       */
      public void setDebug(int debug)
      {
  
          this.debug = debug;
  
      }
  
      /**
       * Return descriptive information about this Logger implementation and
       * the corresponding version number, in the format
       * <code>&lt;description&gt;/&lt;version&gt;</code>.
       * @return String 
       */
      public String getInfo()
      {
  
          return (m_info);
  
      }
  
      /**
       * Return the verbosity level of this logger.  Messages logged with a
       * higher verbosity than this level will be silently ignored.
       * @return int
       */
      public int getVerbosity()
      {
  
          return (this.verbosity);
  
      }
  
      /**
       * Set the verbosity level of this logger.  Messages logged with a
       * higher verbosity than this level will be silently ignored.
       *
       * @param verbosity The new verbosity level
       */
      public void setVerbosity(int verbosity)
      {
  
          this.verbosity = verbosity;
  
      }
  
      /**
       * Set the verbosity level of this logger.  Messages logged with a
       * higher verbosity than this level will be silently ignored.
       *
       * @param verbosity The new verbosity level, as a string
       */
      public void setVerbosityLevel(String verbosity)
      {
  
          if ("FATAL".equalsIgnoreCase(verbosity))
          {
              this.verbosity = FATAL;
          }
          else if ("ERROR".equalsIgnoreCase(verbosity))
          {
              this.verbosity = ERROR;
          }
          else if ("WARNING".equalsIgnoreCase(verbosity))
          {
              this.verbosity = WARNING;
          }
          else if ("INFORMATION".equalsIgnoreCase(verbosity))
          {
              this.verbosity = INFORMATION;
          }
          else if ("DEBUG".equalsIgnoreCase(verbosity))
          {
              this.verbosity = DEBUG;
          }
  
      }
  
      // --------------------------------------------------------- Public Methods
  
      /**
       * Add a property change listener to this component.
       *
       * @param listener The listener to add
       */
      public void addPropertyChangeListener(PropertyChangeListener listener)
      {
  
          support.addPropertyChangeListener(listener);
  
      }
  
      /**
       * Writes the specified exception, and message, to a servlet log file.
       * The implementation of this method should call
       * <code>log(msg, exception)</code> instead.  This method is deprecated
       * in the ServletContext interface, but not deprecated here to avoid
       * many useless compiler warnings.  This message will be logged
       * unconditionally.
       *
       * @param exception An <code>Exception</code> to be reported
       * @param msg The associated message string
       */
      public void log(Exception exception, String msg)
      {
  
          log(msg, exception);
  
      }
  
      /**
       * Writes an explanatory message and a stack trace for a given
       * <code>Throwable</code> exception to the servlet log file.  The name
       * and type of the servlet log file is specific to the servlet container,
       * usually an event log.  This message will be logged unconditionally.
       *
       * @param msg A <code>String</code> that describes the error or
       *  exception
       * @param throwable The <code>Throwable</code> error or exception
       */
      public void log(String msg, Throwable throwable)
      {
  
          CharArrayWriter buf = new CharArrayWriter();
          PrintWriter writer = new PrintWriter(buf);
          writer.println(msg);
          throwable.printStackTrace(writer);
          Throwable rootCause = null;
          if (throwable instanceof LifecycleException)
          {
              rootCause = ((LifecycleException) throwable).getThrowable();
          }
          else if (throwable instanceof ServletException)
          {
              rootCause = ((ServletException) throwable).getRootCause();
          }
          if (rootCause != null)
          {
              writer.println("----- Root Cause -----");
              rootCause.printStackTrace(writer);
          }
          log(buf.toString());
  
      }
  
      /**
       * Writes the specified message to the servlet log file, usually an event
       * log, if the logger is set to a verbosity level equal to or higher than
       * the specified value for this message.
       *
       * @param message A <code>String</code> specifying the message to be
       *  written to the log file
       * @param verbosity Verbosity level of this message
       */
      public void log(String message, int verbosity)
      {
  
          if (this.verbosity >= verbosity)
  		{
              log(message);
  		}
  
      }
  
      /**
       * Writes the specified message and exception to the servlet log file,
       * usually an event log, if the logger is set to a verbosity level equal
       * to or higher than the specified value for this message.
       *
       * @param message A <code>String</code> that describes the error or
       *  exception
       * @param throwable The <code>Throwable</code> error or exception
       * @param verbosity Verbosity level of this message
       */
      public void log(String message, Throwable throwable, int verbosity)
      {
  
          if (this.verbosity >= verbosity)
  		{
              log(message, throwable);
  		}
  
      }
  
      /**
       * Remove a property change listener from this component.
       *
       * @param listener The listener to remove
       */
      public void removePropertyChangeListener(PropertyChangeListener listener)
      {
  
          support.removePropertyChangeListener(listener);
  
      }
  
  }
  
  
  

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