17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 59a70fc3bSMark J. Nelson * Common Development and Distribution License (the "License"). 69a70fc3bSMark J. Nelson * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 227c478bd9Sstevel@tonic-gate * Copyright (c) 2001 by Sun Microsystems, Inc. 237c478bd9Sstevel@tonic-gate * All rights reserved. 247c478bd9Sstevel@tonic-gate * 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate // ClientMsgManager.java:Manages versioned client message creation in server 287c478bd9Sstevel@tonic-gate // Author: James Kempf 297c478bd9Sstevel@tonic-gate // Created On: Thu Sep 17 10:16:33 1998 307c478bd9Sstevel@tonic-gate // Last Modified By: James Kempf 317c478bd9Sstevel@tonic-gate // Last Modified On: Tue Oct 13 15:26:16 1998 327c478bd9Sstevel@tonic-gate // Update Count: 8 337c478bd9Sstevel@tonic-gate // 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate package com.sun.slp; 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate import java.util.*; 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate /** 407c478bd9Sstevel@tonic-gate * The ClientMsgManager class manages creation of client messages in the 417c478bd9Sstevel@tonic-gate * slpd server. Client messages are needed for active DA advertisement 427c478bd9Sstevel@tonic-gate * solicitation, and for forwarding of registrations and deregistrations 437c478bd9Sstevel@tonic-gate * from the SA server to DAs. This class creates the appropriately 447c478bd9Sstevel@tonic-gate * versioned message instance, based on the arguments. It also 45*55fea89dSDan Cross * sets the header variables. It is up to the caller to set the 467c478bd9Sstevel@tonic-gate * instance variables in the object itself. 477c478bd9Sstevel@tonic-gate * 487c478bd9Sstevel@tonic-gate * @author James Kempf 497c478bd9Sstevel@tonic-gate */ 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate abstract class ClientMsgManager extends Object { 527c478bd9Sstevel@tonic-gate 537c478bd9Sstevel@tonic-gate // The class table contains classes registered for particular versions 54*55fea89dSDan Cross // and message types. 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate private static Hashtable classTable = new Hashtable(); 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate // Register a new message type class and version. 597c478bd9Sstevel@tonic-gate addClientMsgClass(String className, int version, String keyName)607c478bd9Sstevel@tonic-gate static void addClientMsgClass(String className, 617c478bd9Sstevel@tonic-gate int version, 627c478bd9Sstevel@tonic-gate String keyName) { 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate // Create the key. 657c478bd9Sstevel@tonic-gate 667c478bd9Sstevel@tonic-gate String key = makeClassKey(keyName, version); 677c478bd9Sstevel@tonic-gate 687c478bd9Sstevel@tonic-gate try { 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate Class headerClass = Class.forName(className); 717c478bd9Sstevel@tonic-gate 727c478bd9Sstevel@tonic-gate classTable.put(headerClass, key); 737c478bd9Sstevel@tonic-gate 747c478bd9Sstevel@tonic-gate } catch (ClassNotFoundException ex) { 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate Assert.slpassert(false, 777c478bd9Sstevel@tonic-gate "no_class", 787c478bd9Sstevel@tonic-gate new Object[] {className}); 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate } 817c478bd9Sstevel@tonic-gate } 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate // Return the appropriately versioned object, with instance variables 847c478bd9Sstevel@tonic-gate // set in the header. 857c478bd9Sstevel@tonic-gate 86*55fea89dSDan Cross static SrvLocMsg newInstance(String keyName, int version, boolean isTCP)877c478bd9Sstevel@tonic-gate newInstance(String keyName, 887c478bd9Sstevel@tonic-gate int version, 89*55fea89dSDan Cross boolean isTCP) 907c478bd9Sstevel@tonic-gate throws ServiceLocationException { 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate try { 937c478bd9Sstevel@tonic-gate 947c478bd9Sstevel@tonic-gate // Get header class. 957c478bd9Sstevel@tonic-gate 96*55fea89dSDan Cross Class msgClass = 977c478bd9Sstevel@tonic-gate (Class)classTable.get(makeClassKey(keyName, version)); 987c478bd9Sstevel@tonic-gate 997c478bd9Sstevel@tonic-gate if (msgClass == null) { 100*55fea89dSDan Cross throw 1017c478bd9Sstevel@tonic-gate new ServiceLocationException( 1027c478bd9Sstevel@tonic-gate ServiceLocationException.INTERNAL_ERROR, 1037c478bd9Sstevel@tonic-gate "cmm_creation_error", 1047c478bd9Sstevel@tonic-gate new Object[] { keyName, 1057c478bd9Sstevel@tonic-gate new Integer(version)}); 1067c478bd9Sstevel@tonic-gate 1077c478bd9Sstevel@tonic-gate } 1087c478bd9Sstevel@tonic-gate 1097c478bd9Sstevel@tonic-gate SrvLocMsg msg = (SrvLocMsg)msgClass.newInstance(); 1107c478bd9Sstevel@tonic-gate 1117c478bd9Sstevel@tonic-gate // Set the packet length. If we've come via TCP, we don't 1127c478bd9Sstevel@tonic-gate // need to set it. 1137c478bd9Sstevel@tonic-gate 1147c478bd9Sstevel@tonic-gate SrvLocHeader hdr = msg.getHeader(); 1157c478bd9Sstevel@tonic-gate 1167c478bd9Sstevel@tonic-gate if (!isTCP) { 1177c478bd9Sstevel@tonic-gate hdr.packetLength = SLPConfig.getSLPConfig().getMTU(); 1187c478bd9Sstevel@tonic-gate 1197c478bd9Sstevel@tonic-gate } 1207c478bd9Sstevel@tonic-gate 1217c478bd9Sstevel@tonic-gate return msg; 1227c478bd9Sstevel@tonic-gate 1237c478bd9Sstevel@tonic-gate } catch (Exception ex) { 124*55fea89dSDan Cross throw 1257c478bd9Sstevel@tonic-gate new ServiceLocationException( 1267c478bd9Sstevel@tonic-gate ServiceLocationException.INTERNAL_ERROR, 1277c478bd9Sstevel@tonic-gate "cmm_creation_exception", 128*55fea89dSDan Cross new Object[] { ex, 129*55fea89dSDan Cross keyName, 130*55fea89dSDan Cross new Integer(version), 1317c478bd9Sstevel@tonic-gate ex.getMessage()}); 1327c478bd9Sstevel@tonic-gate } 1337c478bd9Sstevel@tonic-gate } 1347c478bd9Sstevel@tonic-gate 1357c478bd9Sstevel@tonic-gate // Create the key for the hashtable. 1367c478bd9Sstevel@tonic-gate makeClassKey(String className, int version)1377c478bd9Sstevel@tonic-gate private static String makeClassKey(String className, int version) { 1387c478bd9Sstevel@tonic-gate 1397c478bd9Sstevel@tonic-gate return className + version; 1407c478bd9Sstevel@tonic-gate } 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate } 143