org.apache.jk.common: public class: HandlerDispatch

org.apache.jk.common
public class: HandlerDispatch [javadoc | source]

java.lang.Object
   org.apache.jk.core.JkHandler
      org.apache.jk.common.HandlerDispatch

All Implemented Interfaces:
NotificationListener, MBeanRegistration

Dispatch based on the message type. ( XXX make it more generic, now it's specific to ajp13 ).

author: Costin - Manolache

Field Summary
JkHandler[]	handlers
String[]	handlerNames
static final int	MAX_HANDLERS
static final int	RESERVED
int	currentId

Fields inherited from org.apache.jk.core.JkHandler:
OK, LAST, ERROR, properties, wEnv, next, nextName, name, id, HANDLE_RECEIVE_PACKET, HANDLE_SEND_PACKET, HANDLE_FLUSH, HANDLE_THREAD_END, domain, oname, mserver

Constructor:
public HandlerDispatch() { }

Method from org.apache.jk.common.HandlerDispatch Summary:
init, invoke, registerMessageType

Methods from org.apache.jk.core.JkHandler:
addHandlerCallback, createMsgContext, createMsgContext, destroy, getDomain, getId, getName, getNext, getObjectName, getProperty, handleNotification, init, invoke, pause, postDeregister, postRegister, preDeregister, preRegister, resume, setId, setName, setNext, setNext, setProperty, setWorkerEnv

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.jk.common.HandlerDispatch Detail:
public void init() { }
public int invoke(Msg msg, MsgContext ep) throws IOException { int type=msg.peekByte(); ep.setType( type ); if( type > handlers.length \|\| handlers[type]==null ) { if( log.isDebugEnabled() ) log.debug( "Invalid handler " + type ); return ERROR; } if( log.isDebugEnabled() ) log.debug( "Received " + type + " " + handlers[type].getName()); JkHandler handler=handlers[type]; return handler.invoke( msg, ep ); }
public int registerMessageType(int id, String name, JkHandler h, String[] sig) { if( log.isDebugEnabled() ) log.debug( "Register message " + id + " " + h.getName() + " " + h.getClass().getName()); if( id < 0 ) { // try to find it by name for( int i=0; i< handlerNames.length; i++ ) { if( handlerNames[i]==null ) continue; if( name.equals( handlerNames[i] ) ) return i; } handlers[currentId]=h; handlerNames[currentId]=name; currentId++; return currentId; } handlers[id]=h; handlerNames[currentId]=name; return id; }

Method from org.apache.jk.common.HandlerDispatch Detail:

 public  void init() {

}

 public int invoke(Msg msg,
    MsgContext ep) throws IOException {
        int type=msg.peekByte();
        ep.setType( type );
        if( type  > handlers.length ||
            handlers[type]==null ) {
	    if( log.isDebugEnabled() )
                log.debug( "Invalid handler " + type );
	    return ERROR;
	}
        if( log.isDebugEnabled() )
            log.debug( "Received " + type + " " + handlers[type].getName());
	JkHandler handler=handlers[type];
        return handler.invoke( msg, ep );
}

 public int registerMessageType(int id,
    String name,
    JkHandler h,
    String[] sig) {
            
        if( log.isDebugEnabled() )
            log.debug( "Register message " + id + " " + h.getName() +
                 " " + h.getClass().getName());
	if( id <  0 ) {
	    // try to find it by name
	    for( int i=0; i<  handlerNames.length; i++ ) {
                if( handlerNames[i]==null ) continue;
                if( name.equals( handlerNames[i] ) )
                    return i;
            }
	    handlers[currentId]=h;
            handlerNames[currentId]=name;
	    currentId++;
	    return currentId;
	}
	handlers[id]=h;
        handlerNames[currentId]=name;
	return id;
}