SnmpLcd.java revision 0
77N/A/*
553N/A * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved.
77N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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77N/A * This code is free software; you can redistribute it and/or modify it
77N/A * under the terms of the GNU General Public License version 2 only, as
77N/A * published by the Free Software Foundation. Sun designates this
77N/A * particular file as subject to the "Classpath" exception as provided
77N/A * by Sun in the LICENSE file that accompanied this code.
77N/A *
77N/A * This code is distributed in the hope that it will be useful, but WITHOUT
77N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
77N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
77N/A * version 2 for more details (a copy is included in the LICENSE file that
77N/A * accompanied this code).
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77N/A * You should have received a copy of the GNU General Public License version
77N/A * 2 along with this work; if not, write to the Free Software Foundation,
553N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
553N/A *
553N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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77N/Apackage com.sun.jmx.snmp.internal;
77N/A
77N/Aimport java.util.Hashtable;
77N/Aimport com.sun.jmx.snmp.SnmpEngineId;
77N/Aimport com.sun.jmx.snmp.SnmpUnknownModelLcdException;
77N/Aimport com.sun.jmx.snmp.SnmpUnknownSubSystemException;
77N/A/**
77N/A * 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.
77N/A *<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);
}
}