com.sun.management.snmp
Class SnmpPduFactoryBER

java.lang.Object
  com.sun.management.snmp.SnmpPduFactoryBER

All Implemented Interfaces:

SnmpPduFactory, Serializable

public class SnmpPduFactoryBER
extends Object
implements SnmpPduFactory, Serializable

Default implementation of the SnmpPduFactory interface.
It uses the BER (basic encoding rules) standardized encoding scheme associated with ASN.1.

This implementation of the SnmpPduFactory is very basic: it simply calls encoding and decoding methods from SnmpMsg.

 public SnmpPdu decodeSnmpPdu(SnmpMsg msg) 
 throws SnmpStatusException {
   return msg.decodeSnmpPdu() ;
 }
 
 public SnmpMsg encodeSnmpPdu(SnmpPdu pdu, int maxPktSize)
 throws SnmpStatusException, SnmpTooBigException {
   SnmpMsg result = new SnmpMessage() ;       // for SNMP v1/v2
 or
   SnmpMsg result = new SnmpV3Message() ;     // for SNMP v3
   result.encodeSnmpPdu(pdu, maxPktSize) ;
   return result ;
 }
 

To implement your own object, you can implement SnmpPduFactory or extend SnmpPduFactoryBER.

Since:

Java DMK 5.1

See Also:

Serialized Form

Constructor Summary

SnmpPduFactoryBER()

Method Summary

SnmpPdu	decodeSnmpPdu(SnmpMsg msg) Calls SnmpMsg.decodeSnmpPdu on the specified message and returns the resulting SnmpPdu.
SnmpMsg	encodeSnmpPdu(SnmpPdu pdu, int maxPktSize) Encodes the specified SnmpPdu and returns the resulting SnmpMsg.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SnmpPduFactoryBER

public SnmpPduFactoryBER()

Method Detail

decodeSnmpPdu

public SnmpPdu decodeSnmpPdu(SnmpMsg msg)
                      throws SnmpStatusException

Calls SnmpMsg.decodeSnmpPdu on the specified message and returns the resulting SnmpPdu.

Specified by:

decodeSnmpPdu in interface SnmpPduFactory

Parameters:

msg - The SNMP message to be decoded.

Returns:

The resulting SNMP PDU packet.

Throws:

SnmpStatusException - If the encoding is invalid.

encodeSnmpPdu

public SnmpMsg encodeSnmpPdu(SnmpPdu pdu,
                             int maxPktSize)
                      throws SnmpStatusException,
                             SnmpTooBigException

Encodes the specified SnmpPdu and returns the resulting SnmpMsg. If this method returns null, the specified SnmpPdu will be dropped and the current SNMP request will be aborted.

Specified by:

encodeSnmpPdu in interface SnmpPduFactory

Parameters:

pdu - The SnmpPdu to be encoded.

maxPktSize - The size limit of the resulting encoding.

Returns:

Null or a fully encoded SnmpMsg.

Throws:

SnmpStatusException - If pdu contains illegal values and cannot be encoded.

SnmpTooBigException - If the resulting encoding does not fit into maxPktSize bytes.