Пример #1
0
  public void snmpWalk(String oidFrom) throws SnmpException {
    PDU request = new PDU();
    request.setType(PDU.GETNEXT);
    request.add(new VariableBinding(new OID(oidFrom)));
    request.setNonRepeaters(0);
    OID rootOID = request.get(0).getOid();
    PDU response = null;

    int objects = 0;
    int requests = 0;
    long startTime = System.currentTimeMillis();

    try {
      Snmp snmp = new Snmp(new DefaultUdpTransportMapping());
      snmp.listen();
      m_sessionDestroyed = false;
      do {
        requests++;
        ResponseEvent responseEvent = snmp.send(request, getTarget(getReadCommunity()));
        response = responseEvent.getResponse();
        if (response != null) {
          objects += response.size();
        }
      } while (!processWalk(response, request, rootOID) && !m_sessionDestroyed);

    } catch (SnmpException e) {
      throw e;
    } catch (Exception e) {
      e.printStackTrace();
      throw new SnmpException(e.getMessage());
    }
    if (m_snmpResponseHandler != null) {
      m_snmpResponseHandler.requestStats(requests, objects, System.currentTimeMillis() - startTime);
    }
  }
Пример #2
0
 private boolean processWalk(PDU response, PDU request, OID rootOID) throws SnmpException {
   if ((response == null)
       || (response.getErrorStatus() != 0)
       || (response.getType() == PDU.REPORT)) {
     return true;
   }
   boolean finished = false;
   OID lastOID = request.get(0).getOid();
   for (int i = 0; (!finished) && (i < response.size()); i++) {
     VariableBinding vb = response.get(i);
     if ((vb.getOid() == null)
         || (vb.getOid().size() < rootOID.size())
         || (rootOID.leftMostCompare(rootOID.size(), vb.getOid()) != 0)) {
       finished = true;
     } else if (Null.isExceptionSyntax(vb.getVariable().getSyntax())) {
       outputResponse(vb);
       finished = true;
     } else if (vb.getOid().compareTo(lastOID) <= 0) {
       throw new SnmpException(
           "Variable received is not lexicographic successor of requested one:"
               + vb.toString()
               + " <= "
               + lastOID);
     } else {
       outputResponse(vb);
       lastOID = vb.getOid();
     }
   }
   if (response.size() == 0) {
     finished = true;
   }
   if (!finished) {
     VariableBinding next = response.get(response.size() - 1);
     next.setVariable(new Null());
     request.set(0, next);
     request.setRequestID(new Integer32(0));
   }
   return finished;
 }
 /**
  * Method which takes a single OID and returns the response from the agent as a String.
  *
  * @param oid
  * @return
  * @throws IOException
  */
 public String getAsString(OID... oid) throws IOException {
   //        ResponseEvent event = get(new OID[]{oid});
   //        return event.getResponse().get(0).getVariable().toString();
   ResponseEvent event = get(oid);
   PDU response = event.getResponse();
   int size = oid.length;
   //        VariableBinding variableBinding=response.get(0);
   //        Variable variable=variableBinding.getVariable();
   //        String varStirng=variable.toString();
   //        return varStirng;
   StringBuilder builder = new StringBuilder();
   for (int i = 0; i < size; i++) {
     VariableBinding variableBinding = response.get(i);
     Variable variable = variableBinding.getVariable();
     String varStirng = variable.toString();
     String oi = variableBinding.getOid().toString();
     builder.append("oid: ").append(oi).append(" var: ").append(varStirng).append("\n");
   }
   return builder.toString();
 }