- /*
- * @(#)file SnmpLcd.java
- * @(#)author Sun Microsystems, Inc.
- * @(#)version 1.20
- * @(#)date 04/09/15
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- *
- */
- 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 models = new Hashtable();
- public void addModelLcd(int id,
- SnmpModelLcd usmlcd) {
- models.put(new Integer(id), usmlcd);
- }
-
- public SnmpModelLcd getModelLcd(int id) {
- return (SnmpModelLcd) models.get(new Integer(id));
- }
-
- public SnmpModelLcd removeModelLcd(int id) {
- return (SnmpModelLcd) models.remove(new Integer(id));
- }
- }
-
-
- private Hashtable subs = new Hashtable();
-
- /**
- * 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 = (SubSysLcdManager) 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 = (SubSysLcdManager) 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 = (SubSysLcdManager) subs.get(sys);
-
- if(subsys == null) return null;
-
- return (SnmpModelLcd) subsys.getModelLcd(id);
- }
- }