/*
* @(#)file SnmpOidTableSupport.java
* @(#)author Sun Microsystems, Inc.
* @(#)version 1.18
* @(#)date 05/08/26
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*/
package com.sun.jmx.snmp;
// java import
//
import java.util.Vector;
import java.util.Enumeration;
import java.util.Hashtable;
//RI import
import com.sun.jmx.snmp.SnmpOidTable;
import com.sun.jmx.snmp.SnmpOidRecord;
import com.sun.jmx.snmp.SnmpStatusException;
// SNMP Runtime import
//
import com.sun.jmx.trace.Trace;
/**
* Contains metadata definitions for MIB variables.
* A name can be resolved against a table of MIB variables.
* Each entry in the table is an <CODE>SnmpOidRecord</CODE> object that contains a name, a dot-separated OID string,
* and the corresponding SMI type of the variable.
* <P>
* If you need to load a specific <CODE>SnmpOidTable</CODE>, just call the static method
* {@link com.sun.jmx.snmp.SnmpOid#setSnmpOidTable <CODE>SnmpOid.setSnmpOidTable(<I>myOidTable</I>)</CODE>}.
* <P>
* <p><b>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b></p>
* @see com.sun.jmx.snmp.SnmpOidRecord
*
* @version 1.18 12/19/03
* @author Sun Microsystems, Inc
*/
public class SnmpOidTableSupport implements SnmpOidTable {
/**
* Creates an <CODE>SnmpOidTableSupport</CODE> with the specified name.
* This name identifies the MIB to which belong the MIB variables contained
* in this <CODE>SnmpOidTableSupport</CODE> object.
* @param name The OID table name.
*/
public SnmpOidTableSupport(String name) {
myName=name;
}
/**
* Searches for a MIB variable given its logical name and returns an {@link com.sun.jmx.snmp.SnmpOidRecord} object
* containing information on the variable.
*
* @param name The name of the MIB variable.
* @return The <CODE>SnmpOidRecord</CODE> object containing information on the variable.
* @exception SnmpStatusException If the variable is not found.
*/
public SnmpOidRecord resolveVarName(String name) throws SnmpStatusException {
SnmpOidRecord var = (SnmpOidRecord)oidStore.get(name) ;
if (var != null) {
return var;
} else {
throw new SnmpStatusException("Variable name <" + name + "> not found in Oid repository") ;
}
}
/**
* Searches for a MIB variable given its OID and returns an {@link com.sun.jmx.snmp.SnmpOidRecord} object
* containing information on the variable.
*
* @param oid The OID of the MIB variable.
* @return The <CODE>SnmpOidRecord</CODE> object containing information on the variable.
* @exception SnmpStatusException If the variable is not found.
*/
public SnmpOidRecord resolveVarOid(String oid) throws SnmpStatusException {
// Try to see if the variable name is actually an OID to resolve.
//
int index = oid.indexOf('.') ;
if (index < 0) {
throw new SnmpStatusException("Variable oid <" + oid + "> not found in Oid repository") ;
}
if (index == 0) {
// The oid starts with a '.' ala CMU.
//
oid= oid.substring(1, oid.length());
}
// Go through the oidStore ... Good luck !
//
for(Enumeration list= oidStore.elements(); list.hasMoreElements(); ) {
SnmpOidRecord element= (SnmpOidRecord) list.nextElement();
if (element.getOid().equals(oid))
return element;
}
throw new SnmpStatusException("Variable oid <" + oid + "> not found in Oid repository") ;
}
/**
* Returns a list that can be used to traverse all the entries in this <CODE>SnmpOidTable</CODE>.
* @return A vector of {@link com.sun.jmx.snmp.SnmpOidRecord} objects.
*/
public Vector getAllEntries() {
Vector elementsVector = new Vector();
// get the locally defined elements ...
for (Enumeration e = oidStore.elements();
e.hasMoreElements(); ) {
elementsVector.addElement(e.nextElement());
}
return elementsVector ;
}
/**
* Loads a list of variables into the storage area,
* which is kept in memory. If you have new MIB variables,
* this method can be called to load them.
* @param mibs The list of variables to load.
*/
public synchronized void loadMib(SnmpOidRecord[] mibs) {
try {
for (int i = 0; ; i++) {
SnmpOidRecord s = mibs[i] ;
if (isTraceOn()) {
trace("loadMib", "load " + s.getName());
}
oidStore.put(s.getName(), s) ;
}
} catch (ArrayIndexOutOfBoundsException e) {
}
}
/**
* Checks if the specified <CODE>Object</CODE> is equal to this <CODE>SnmpOidTableSupport</CODE>.
* @param object The <CODE>Object</CODE> to be compared.
* @return <CODE>true</CODE> if <CODE>object</CODE> is an <CODE>SnmpOidTableSupport</CODE> instance and equals to this,
* <CODE>false</CODE> otherwise.
*/
public boolean equals(Object object) {
if (!(object instanceof SnmpOidTableSupport)) {
return false;
}
SnmpOidTableSupport val = (SnmpOidTableSupport) object;
return myName.equals(val.getName());
}
/**
* Returns the name identifying this <CODE>SnmpOidTableSupport</CODE> object.
* @return The OID table name.
*/
public String getName() {
return myName;
}
/*
* ------------------------------------------
* PRIVATE METHODS
* ------------------------------------------
*/
// TRACES & DEBUG
//---------------
boolean isTraceOn() {
return Trace.isSelected(Trace.LEVEL_TRACE, Trace.INFO_SNMP);
}
void trace(String clz, String func, String info) {
Trace.send(Trace.LEVEL_TRACE, Trace.INFO_SNMP, clz, func, info);
}
void trace(String func, String info) {
trace(dbgTag, func, info);
}
boolean isDebugOn() {
return Trace.isSelected(Trace.LEVEL_DEBUG, Trace.INFO_SNMP);
}
void debug(String clz, String func, String info) {
Trace.send(Trace.LEVEL_DEBUG, Trace.INFO_SNMP, clz, func, info);
}
void debug(String func, String info) {
debug(dbgTag, func, info);
}
String dbgTag = "SnmpOidTableSupport";
private Hashtable oidStore = new Hashtable() ; // storage area.
private String myName;
}
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