bootstrapserverrequestdispatcher.java

来自「JAVA 所有包」· Java 代码 · 共 132 行

/*
 * @(#)BootstrapServerRequestDispatcher.java	1.26 05/11/17
 * 
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.corba.se.impl.protocol ;

import java.util.Iterator ;

import org.omg.CORBA.SystemException ;

import com.sun.corba.se.pept.protocol.MessageMediator;

import com.sun.corba.se.spi.ior.IOR ;
import com.sun.corba.se.spi.ior.ObjectKey ;
import com.sun.corba.se.spi.orb.ORB ;
import com.sun.corba.se.spi.protocol.CorbaServerRequestDispatcher ;
import com.sun.corba.se.spi.protocol.CorbaMessageMediator;

import com.sun.corba.se.impl.encoding.MarshalInputStream ;
import com.sun.corba.se.impl.encoding.MarshalOutputStream ;

import com.sun.corba.se.spi.logging.CORBALogDomains ;

import com.sun.corba.se.impl.logging.ORBUtilSystemException ;

/**
 * Class BootstrapServerRequestDispatcher handles the requests coming to the
 * BootstrapServer. It implements Server so that it can be registered
 * as a subcontract. It is passed a BootstrapServiceProperties object
 * which contains
 * the supported ids and their values for the bootstrap service. This
 * Properties object is only read from, never written to, and is shared
 * among all threads.
 * <p>
 * The BootstrapServerRequestDispatcher responds primarily to GIOP requests,
 * but LocateRequests are also handled for graceful interoperability.
 * The BootstrapServerRequestDispatcher handles one request at a time.
 */
public class BootstrapServerRequestDispatcher 
    implements CorbaServerRequestDispatcher
{
    private ORB orb;

    ORBUtilSystemException wrapper ;

    private static final boolean debug = false;

    public BootstrapServerRequestDispatcher(ORB orb )
    {
	this.orb = orb;
	this.wrapper = ORBUtilSystemException.get( orb,
	    CORBALogDomains.RPC_PROTOCOL ) ;
    }
    
    /**
     * Dispatch is called by the ORB and will serve get(key) and list()
     * invocations on the initial object key.
     */
    public void dispatch(MessageMediator messageMediator)
    {
	CorbaMessageMediator request = (CorbaMessageMediator) messageMediator;
	CorbaMessageMediator response = null;

	try {
	    MarshalInputStream is = (MarshalInputStream) 
		request.getInputObject();
	    String method = request.getOperationName();
	    response = request.getProtocolHandler().createResponse(request, null);
	    MarshalOutputStream os = (MarshalOutputStream) 
		response.getOutputObject();

            if (method.equals("get")) {
                // Get the name of the requested service
                String serviceKey = is.read_string();

                // Look it up
		org.omg.CORBA.Object serviceObject = 
		    orb.getLocalResolver().resolve( serviceKey ) ;

                // Write reply value
                os.write_Object(serviceObject);
            } else if (method.equals("list")) {
		java.util.Set keys = orb.getLocalResolver().list() ;
		os.write_long( keys.size() ) ;
		Iterator iter = keys.iterator() ;
		while (iter.hasNext()) {
		    String obj = (String)iter.next() ;
		    os.write_string( obj ) ;
		}
	    } else {
		throw wrapper.illegalBootstrapOperation( method ) ;
            }

	} catch (org.omg.CORBA.SystemException ex) {
            // Marshal the exception thrown
	    response = request.getProtocolHandler().createSystemExceptionResponse(
		request, ex, null);
	} catch (java.lang.RuntimeException ex) {
            // Unknown exception
	    SystemException sysex = wrapper.bootstrapRuntimeException( ex ) ;
	    response = request.getProtocolHandler().createSystemExceptionResponse(
                 request, sysex, null ) ;
	} catch (java.lang.Exception ex) {
            // Unknown exception
	    SystemException sysex = wrapper.bootstrapException( ex ) ;
	    response = request.getProtocolHandler().createSystemExceptionResponse(
                 request, sysex, null ) ;
	}

	return;
    }

    /**
     * Locates the object mentioned in the locate requests, and returns
     * object here iff the object is the initial object key. A SystemException
     * thrown if the object key is not the initial object key.
     */
    public IOR locate( ObjectKey objectKey) {
	return null;
    }

    /**
     * Not implemented
     */
    public int getId() {
	throw wrapper.genericNoImpl() ;
    }
}