Back to index...

	/*
	* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package com.sun.jmx.snmp.daemon;

	// java imports
	//
	import java.util.logging.Level;
	import java.util.Vector;

	// jmx imports
	//
	import com.sun.jmx.snmp.SnmpEngine;
	import com.sun.jmx.snmp.SnmpPdu;
	import com.sun.jmx.snmp.SnmpValue;
	import com.sun.jmx.snmp.SnmpVarBind;
	import com.sun.jmx.snmp.SnmpVarBindList;
	import com.sun.jmx.snmp.SnmpOid;
	import com.sun.jmx.snmp.SnmpDefinitions;
	import com.sun.jmx.snmp.SnmpStatusException;
	// SNMP Runtime import
	//
	import static com.sun.jmx.defaults.JmxProperties.SNMP_ADAPTOR_LOGGER;
	import com.sun.jmx.snmp.agent.SnmpMibAgent;
	import com.sun.jmx.snmp.agent.SnmpMibRequest;
	import com.sun.jmx.snmp.daemon.SnmpAdaptorServer;
	import com.sun.jmx.snmp.internal.SnmpIncomingRequest;

	/* NPCTE fix for bugId 4492741, esc 0 */
	import com.sun.jmx.snmp.ThreadContext;
	/* end of NPCTE fix for bugId 4492741 */

	class SnmpSubNextRequestHandler extends SnmpSubRequestHandler {
	private SnmpAdaptorServer server = null;
	/**
	* The constructor initialize the subrequest with the whole varbind
	* list contained in the original request.
	*/
	protected SnmpSubNextRequestHandler(SnmpAdaptorServer server,
	SnmpMibAgent agent,
	SnmpPdu req) {
	super(agent,req);
	init(req, server);
	}

	protected SnmpSubNextRequestHandler(SnmpEngine engine,
	SnmpAdaptorServer server,
	SnmpIncomingRequest incRequest,
	SnmpMibAgent agent,
	SnmpPdu req) {
	super(engine, incRequest, agent, req);
	init(req, server);
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, SnmpSubNextRequestHandler.class.getName(),
	"SnmpSubNextRequestHandler", "Constructor : " + this);
	}
	}

	private void init(SnmpPdu req, SnmpAdaptorServer server) {
	this.server = server;

	// The translation table is easy in this case ...
	//
	final int max= translation.length;
	final SnmpVarBind[] list= req.varBindList;
	final NonSyncVector<SnmpVarBind> nonSyncVarBind =
	((NonSyncVector<SnmpVarBind>)varBind);
	for(int i=0; i < max; i++) {
	translation[i]= i;
	// we need to allocate a new SnmpVarBind. Otherwise the first
	// sub request will modify the list...
	//
	final SnmpVarBind newVarBind =
	new SnmpVarBind(list[i].oid, list[i].value);
	nonSyncVarBind.addNonSyncElement(newVarBind);
	}
	}

	public void run() {

	try {
	/* NPCTE fix for bugId 4492741, esc 0, 16-August-2001 */
	final ThreadContext oldContext =
	ThreadContext.push("SnmpUserData",data);
	try {
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINER, SnmpSubRequestHandler.class.getName(),
	"run", "[" + Thread.currentThread() +
	"]:getNext operation on " + agent.getMibName());
	}

	// Always call with V2. So the merge of the responses will
	// be easier.
	//
	agent.getNext(createMibRequest(varBind, snmpVersionTwo, data));
	} finally {
	ThreadContext.restore(oldContext);
	}
	/* end of NPCTE fix for bugId 4492741 */


	} catch(SnmpStatusException x) {
	errorStatus = x.getStatus() ;
	errorIndex= x.getErrorIndex();
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, SnmpSubRequestHandler.class.getName(),
	"run", "[" + Thread.currentThread() +
	"]:an Snmp error occurred during the operation", x);
	}
	}
	catch(Exception x) {
	errorStatus = SnmpDefinitions.snmpRspGenErr ;
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, SnmpSubRequestHandler.class.getName(),
	"run", "[" + Thread.currentThread() +
	"]:a generic error occurred during the operation", x);
	}
	}
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINER, SnmpSubRequestHandler.class.getName(),
	"run", "[" + Thread.currentThread() + "]:operation completed");
	}
	}

	/**
	* The method updates the varbind list of the subrequest.
	*/
	protected void updateRequest(SnmpVarBind var, int pos) {
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, SnmpSubRequestHandler.class.getName(),
	"updateRequest", "Copy :" + var);
	}
	int size= varBind.size();
	translation[size]= pos;
	final SnmpVarBind newVarBind =
	new SnmpVarBind(var.oid, var.value);
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINEST)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, SnmpSubRequestHandler.class.getName(),
	"updateRequest", "Copied :" + newVarBind);
	}

	varBind.addElement(newVarBind);
	}
	/**
	* The method updates a given var bind list with the result of a
	* previsouly invoked operation.
	* Prior to calling the method, one must make sure that the operation was
	* successful. As such the method getErrorIndex or getErrorStatus should be
	* called.
	*/
	protected void updateResult(SnmpVarBind[] result) {

	final int max=varBind.size();
	for(int i= 0; i< max ; i++) {
	// May be we should control the position ...
	//
	final int index= translation[i];
	final SnmpVarBind elmt=
	(SnmpVarBind)((NonSyncVector)varBind).elementAtNonSync(i);

	final SnmpVarBind vb= result[index];
	if (vb == null) {
	result[index]= elmt;
	/* NPCTE fix for bugid 4381195 esc 0. <J.C.> < 17-Oct-2000> */
	// if ((elmt != null) && (elmt.value == null) &&
	// (version == snmpVersionTwo))
	// elmt.value = SnmpVarBind.endOfMibView;
	/* end of NPCTE fix for bugid 4381195 */
	continue;
	}

	final SnmpValue val= vb.value;
	if ((val == null)\|\| (val == SnmpVarBind.endOfMibView)){
	/* NPCTE fix for bugid 4381195 esc 0. <J.C.> < 17-Oct-2000> */
	if ((elmt != null) &&
	(elmt.value != SnmpVarBind.endOfMibView))
	result[index]= elmt;
	// else if ((val == null) && (version == snmpVersionTwo))
	// vb.value = SnmpVarBind.endOfMibView;
	continue;
	/* end of NPCTE fix for bugid 4381195 */
	}

	/* NPCTE fix for bugid 4381195 esc 0. <J.C.> < 17-Oct-2000> */
	if (elmt == null) continue;
	/* end of NPCTE fix for bugid 4381195 */

	if (elmt.value == SnmpVarBind.endOfMibView) continue;


	// Now we need to take the smallest oid ...
	//
	int comp = elmt.oid.compareTo(vb.oid);
	if (comp < 0) {
	// Take the smallest (lexicographically)
	//
	result[index]= elmt;
	}
	else {
	if(comp == 0) {
	// Must compare agent used for reply
	// Take the deeper within the reply
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINER, SnmpSubRequestHandler.class.getName(),
	"updateResult"," oid overlapping. Oid : " +
	elmt.oid + "value :" + elmt.value);
	SNMP_ADAPTOR_LOGGER.logp(Level.FINER, SnmpSubRequestHandler.class.getName(),
	"updateResult","Already present varBind : " +
	vb);
	}

	SnmpOid oid = vb.oid;
	SnmpMibAgent deeperAgent = server.getAgentMib(oid);

	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINER, SnmpSubRequestHandler.class.getName(),
	"updateResult","Deeper agent : " + deeperAgent);
	}
	if(deeperAgent == agent) {
	if (SNMP_ADAPTOR_LOGGER.isLoggable(Level.FINER)) {
	SNMP_ADAPTOR_LOGGER.logp(Level.FINER, SnmpSubRequestHandler.class.getName(),
	"updateResult","The current agent is the deeper one. Update the value with the current one");
	}
	result[index].value = elmt.value;
	}

	/*
	Vector v = new Vector();
	SnmpMibRequest getReq = createMibRequest(v,
	version,
	null);
	SnmpVarBind realValue = new SnmpVarBind(oid);
	getReq.addVarBind(realValue);
	try {
	deeperAgent.get(getReq);
	} catch(SnmpStatusException e) {
	e.printStackTrace();
	}

	if(isDebugOn())
	trace("updateResult", "Biggest priority value is : " +
	realValue.value);

	result[index].value = realValue.value;
	*/
	}
	}
	}
	}
	}

Back to index...