| /* |
| * Copyright (c) 2001, 2006, 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.internal; |
| |
| import java.util.Hashtable; |
| import com.sun.jmx.snmp.SnmpEngineId; |
| import com.sun.jmx.snmp.SnmpUnknownModelLcdException; |
| import com.sun.jmx.snmp.SnmpUnknownSubSystemException; |
| /** |
| * Class to extend in order to develop a customized Local Configuration Datastore. The Lcd is used by the <CODE>SnmpEngine</CODE> to store and retrieve data. |
| *<P> <CODE>SnmpLcd</CODE> manages the Lcds needed by every {@link com.sun.jmx.snmp.internal.SnmpModel SnmpModel}. It is possible to add and remove {@link com.sun.jmx.snmp.internal.SnmpModelLcd SnmpModelLcd}.</P> |
| * <p><b>This API is a Sun Microsystems internal API and is subject |
| * to change without notice.</b></p> |
| * @since 1.5 |
| */ |
| public abstract class SnmpLcd { |
| |
| class SubSysLcdManager { |
| private Hashtable<Integer, SnmpModelLcd> models = |
| new Hashtable<Integer, SnmpModelLcd>(); |
| |
| public void addModelLcd(int id, |
| SnmpModelLcd usmlcd) { |
| models.put(new Integer(id), usmlcd); |
| } |
| |
| public SnmpModelLcd getModelLcd(int id) { |
| return models.get(new Integer(id)); |
| } |
| |
| public SnmpModelLcd removeModelLcd(int id) { |
| return models.remove(new Integer(id)); |
| } |
| } |
| |
| |
| private Hashtable<SnmpSubSystem, SubSysLcdManager> subs = |
| new Hashtable<SnmpSubSystem, SubSysLcdManager>(); |
| |
| /** |
| * Returns the number of time the engine rebooted. |
| * @return The number of reboots or -1 if the information is not present in the Lcd. |
| */ |
| public abstract int getEngineBoots(); |
| /** |
| * Returns the engine Id located in the Lcd. |
| * @return The engine Id or null if the information is not present in the Lcd. |
| */ |
| public abstract String getEngineId(); |
| |
| /** |
| * Persists the number of reboots. |
| * @param i Reboot number. |
| */ |
| public abstract void storeEngineBoots(int i); |
| |
| /** |
| * Persists the engine Id. |
| * @param id The engine Id. |
| */ |
| public abstract void storeEngineId(SnmpEngineId id); |
| /** |
| * Adds an Lcd model. |
| * @param sys The subsytem managing the model. |
| * @param id The model Id. |
| * @param lcd The Lcd model. |
| */ |
| public void addModelLcd(SnmpSubSystem sys, |
| int id, |
| SnmpModelLcd lcd) { |
| |
| SubSysLcdManager subsys = subs.get(sys); |
| if( subsys == null ) { |
| subsys = new SubSysLcdManager(); |
| subs.put(sys, subsys); |
| } |
| |
| subsys.addModelLcd(id, lcd); |
| } |
| /** |
| * Removes an Lcd model. |
| * @param sys The subsytem managing the model. |
| * @param id The model Id. |
| */ |
| public void removeModelLcd(SnmpSubSystem sys, |
| int id) |
| throws SnmpUnknownModelLcdException, SnmpUnknownSubSystemException { |
| |
| SubSysLcdManager subsys = subs.get(sys); |
| if( subsys != null ) { |
| SnmpModelLcd lcd = subsys.removeModelLcd(id); |
| if(lcd == null) { |
| throw new SnmpUnknownModelLcdException("Model : " + id); |
| } |
| } |
| else |
| throw new SnmpUnknownSubSystemException(sys.toString()); |
| } |
| |
| /** |
| * Gets an Lcd model. |
| * @param sys The subsytem managing the model |
| * @param id The model Id. |
| * @return The Lcd model or null if no Lcd model were found. |
| */ |
| public SnmpModelLcd getModelLcd(SnmpSubSystem sys, |
| int id) { |
| SubSysLcdManager subsys = subs.get(sys); |
| |
| if(subsys == null) return null; |
| |
| return subsys.getModelLcd(id); |
| } |
| } |