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From cos...@apache.org
Subject cvs commit: jakarta-tomcat-connectors/jk/java/org/apache/jk/common JniHandler.java
Date Thu, 25 Apr 2002 18:20:33 GMT
costin      02/04/25 11:20:33

  Added:       jk/java/org/apache/jk/common JniHandler.java
  Log:
  Add the code that is common the Shm and ChannelJni ( and soon ChannleUn ).
  
  ( I won't touch the stable code for socket and ajp13: Remy, relax :-)
  
  Revision  Changes    Path
  1.1                  jakarta-tomcat-connectors/jk/java/org/apache/jk/common/JniHandler.java
  
  Index: JniHandler.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.jk.common;
  
  import java.io.*;
  
  import java.net.*;
  import java.util.*;
  
  import org.apache.tomcat.util.buf.*;
  import org.apache.tomcat.util.http.*;
  
  import org.apache.tomcat.util.threads.*;
  
  import org.apache.jk.core.*;
  import org.apache.jk.apr.*;
  
  
  /** 
   * Proxy for the Jk native component.
   *
   * @author Costin Manolache
   */
  public class JniHandler extends JkHandler {
      protected AprImpl apr;
      
      // The native side handler
      protected long nativeJkHandlerP;
  
      protected String jkHome;
  
      // Dispatch table codes. Hardcoded for now, will change when we have more handlers.
      public static final int JK_HANDLE_JNI_DISPATCH=0x15; 
      public static final int JK_HANDLE_SHM_DISPATCH=0x16; 
  
  
      public static final int MSG_NOTE=0;
      public static final int C2B_NOTE=1;
      public static final int MB_NOTE=2;
      
      
      public JniHandler() {
      }
  
      /** 
       */
      public void setJkHome( String s ) {
          jkHome=s;
      }
  
      /** You must call initNative() inside the component init()
       */
      public void init() throws IOException {
          // static field init, temp
      }
  
      protected void initNative(String nativeComponentName) {
          apr=(AprImpl)wEnv.getHandler("apr");
          if( apr==null || ! apr.isLoaded() ) { 
              log.error("No apr, disabling jni proxy ");
              return;
          }
          
          long xEnv=apr.getJkEnv();
          nativeJkHandlerP=apr.getJkHandler(xEnv, nativeComponentName );
          
          if( nativeJkHandlerP==0 ) {
              log.info("Component not found, creating it " + nativeComponentName ); 
              nativeJkHandlerP=apr.createJkHandler(xEnv, nativeComponentName);
          }
          log.info("Native proxy " + nativeJkHandlerP );
          
          apr.releaseJkEnv(xEnv); 
     }
  
      public void appendString( Msg msg, String s, C2BConverter charsetDecoder)
          throws IOException
      {
          ByteChunk bc=charsetDecoder.getByteChunk();
          charsetDecoder.recycle();
          charsetDecoder.convert( s );
          charsetDecoder.flushBuffer();
          msg.appendByteChunk( bc );
      }
      
      /** Create a msg context to be used with the shm channel
       */
      public MsgContext createMsgContext() {
          if( nativeJkHandlerP==0 || apr==null  )
              return null;
  
          try {
              MsgContext msgCtx=new MsgContext();
              MsgAjp msg=new MsgAjp();
              
              msgCtx.setNext( this );
              
              msgCtx.setMsg( MSG_NOTE, msg); // XXX Use noteId
              
              C2BConverter c2b=new C2BConverter(  "UTF8" );
              msgCtx.setNote( C2B_NOTE, c2b );
              
              MessageBytes tmpMB=new MessageBytes();
              msgCtx.setNote( MB_NOTE, tmpMB );
              return msgCtx;
          } catch( Exception ex ) {
              ex.printStackTrace();
              return null;
          }
      }
  
      protected void setNativeEndpoint(MsgContext msgCtx) {
          long xEnv=apr.getJkEnv();
          msgCtx.setJniEnv( xEnv );
  
          long epP=apr.createJkHandler(xEnv, "endpoint");
          msgCtx.setJniContext( epP );
  
      }
  
      protected void recycleNative(MsgContext ep) {
          apr.jkRecycle(ep.getJniEnv(), ep.getJniContext());
      }
      
      /** send and get the response in the same buffer.
       */
      protected int nativeDispatch( Msg msg, MsgContext ep, int code )
          throws IOException
      {
          if( log.isInfoEnabled() ) log.info( "Sending packet ");
          msg.end();
          if( log.isTraceEnabled() ) msg.dump("OUT:" );
          long xEnv=ep.getJniEnv();
          long nativeContext=ep.getJniContext();
          if( nativeContext==0 || xEnv==0 ) {
              setNativeEndpoint( ep );
              xEnv=ep.getJniEnv();
              nativeContext=ep.getJniContext();
          }
  
          if( xEnv==0 || nativeContext==0 || nativeJkHandlerP==0 ) {
              log.error("invokeNative: Null pointer ");
              return -1;
          }
  
          // Will process the message in the current thread.
          // No wait needed to receive the response
          int status=apr.jkInvoke( xEnv,
                                   nativeJkHandlerP,
                                   nativeContext,
                                   code, msg.getBuffer(), msg.getLen()); 
          
          if( log.isInfoEnabled() ) log.info( "Sending packet - done " + status);
          return status;
      }
  
      public  int invoke(Msg msg, MsgContext ep )
          throws IOException
      {
          long xEnv=ep.getJniEnv();
          int type=ep.getType();
  
          switch( type ) {
          case JkHandler.HANDLE_RECEIVE_PACKET:
              //            return receive( msg, ep );
          case JkHandler.HANDLE_SEND_PACKET:
              //            return send( msg, ep );
          }
  
          int status=nativeDispatch(msg, ep, type );
          
          apr.jkRecycle(xEnv, ep.getJniContext());
  
          if(log.isInfoEnabled() ) log.info("Shm invoke status " + status);
  
          return 0;
      }    
  
      private static org.apache.commons.logging.Log log=
          org.apache.commons.logging.LogFactory.getLog( JniHandler.class );
  
  }
  
  
  

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