private void requestAndVerifyResponse(int pduType, int version) throws Exception {
PDU pdu = createPDU(version);
for (AnticipatedRequest a : m_requestedVarbinds) {
pdu.add(a.getRequestVarbind());
}
pdu.setType(pduType);
PDU response = sendRequest(pdu, version);
assertNotNull("request timed out", response);
System.err.println("Response is: " + response);
assertTrue(
"unexpected report pdu: "
+ ((VariableBinding) response.getVariableBindings().get(0)).getOid(),
response.getType() != PDU.REPORT);
assertEquals(
"Unexpected number of varbinds returned.",
m_requestedVarbinds.size(),
response.getVariableBindings().size());
for (int i = 0; i < m_requestedVarbinds.size(); i++) {
AnticipatedRequest a = m_requestedVarbinds.get(i);
VariableBinding vb = response.get(i);
a.verify(vb);
}
reset();
}
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;
}
public void processPdu(CommandResponderEvent pRequest) {
final PDU requestPdu = pRequest.getPDU();
if (requestPdu == null) {
return;
}
try {
final PDU responsePdu = new PDU(requestPdu);
responsePdu.setType(PDU.RESPONSE);
if (requestPdu.getType() == PDU.GET) {
for (VariableBinding binding : responsePdu.toArray()) {
final OID oid = binding.getOid();
final String path = jmxMib.getPathFromOid(oid.toString());
if (path == null) {
binding.setVariable(Null.noSuchObject);
continue;
}
final JmxAttribute attribute = jmxIndex.getAttributeAtPath(path);
if (attribute == null) {
binding.setVariable(Null.noSuchObject);
continue;
}
final Variable variable = getVariableFromJmxAttribute(attribute);
if (variable != null) {
binding.setVariable(variable);
}
}
} else if (requestPdu.getType() == PDU.GETNEXT) {
for (VariableBinding binding : responsePdu.toArray()) {
final OID oid = binding.getOid();
final String next = jmxMib.getNextOidFromOid(oid.toString());
if (next == null) {
binding.setVariable(Null.noSuchObject);
continue;
}
final OID nextOid = new OID(next);
binding.setOid(nextOid);
final String path = jmxMib.getPathFromOid(nextOid.toString());
if (path == null) {
binding.setVariable(Null.noSuchObject);
continue;
}
final JmxAttribute attribute = jmxIndex.getAttributeAtPath(path);
if (attribute == null) {
binding.setVariable(Null.noSuchObject);
continue;
}
final Variable variable = getVariableFromJmxAttribute(attribute);
if (variable != null) {
binding.setVariable(variable);
}
}
} else {
}
pRequest.getStateReference().setTransportMapping(pRequest.getTransportMapping());
pRequest
.getMessageDispatcher()
.returnResponsePdu(
pRequest.getMessageProcessingModel(),
pRequest.getSecurityModel(),
pRequest.getSecurityName(),
pRequest.getSecurityLevel(),
responsePdu,
pRequest.getMaxSizeResponsePDU(),
pRequest.getStateReference(),
new StatusInformation());
} catch (Exception e) {
e.printStackTrace();
}
}
/** {@inheritDoc} */
public PDU processPdu(PDU pdu) throws SnmpToolkitException {
Log log = LogFactory.getLog(this.getClass());
// 応答用のPDUを生成する
PDU retPdu = new PDU();
retPdu.setType(PDU.RESPONSE);
// 要求のリクエストIDを取得し、応答PDUにセットする
Integer32 requestID = pdu.getRequestID();
retPdu.setRequestID(requestID);
// SNMP4J用の型変換オブジェクト
SnmpVariableHelper varHelper = new Snmp4jVariableHelper();
// AgentServiceからAgentを取得する
Agent agent = this.agentService_.getAgent();
// 要求PDUのVarbindを走査する
int varCount = 0;
List<?> reqVarbinds = pdu.getVariableBindings();
for (Object reqVarbindObj : reqVarbinds) {
varCount++;
// 要求されているOIDを取得する
VariableBinding reqVarbind = (VariableBinding) reqVarbindObj;
OID oid = reqVarbind.getOid();
// GETNEXTでない場合は、指定されたOIDそのものを取得しようとする
// GETNEXTの場合は、指定されたOID配下で最も近いオブジェクトを探す
boolean exact = (pdu.getType() != PDU.GETNEXT);
SnmpVarbind foundVarbind = agent.findObject(oid.toString(), exact);
if (foundVarbind == null) {
// Varbindが見つからなかった場合はnoSuchNameを返す
log.warn("varbind is not found. oid=" + oid.toString());
retPdu.setErrorStatus(SnmpConstants.SNMP_ERROR_NO_SUCH_NAME);
retPdu.setErrorIndex(varCount);
Variable retObject = new Null();
VariableBinding retVarbind = new VariableBinding(oid, retObject);
retPdu.add(retVarbind);
break;
}
// READ-WRITEでなければエラー応答を返す
String accessibility = foundVarbind.getAccessibility();
if (accessibility.equals(SnmpVarbind.ACCESSIBILITY_NOT_ACCESSIBLE) == true) {
log.warn("varbind is not accessible. accessibility=" + accessibility);
retPdu.setErrorStatus(SnmpConstants.SNMP_ERROR_NO_ACCESS);
retPdu.setErrorIndex(varCount);
Variable retObject = new Null();
VariableBinding retVarbind = new VariableBinding(oid, retObject);
retPdu.add(retVarbind);
break;
}
try {
// 正常の応答を返す
retPdu.setErrorStatus(SnmpConstants.SNMP_ERROR_SUCCESS);
retPdu.setErrorIndex(0);
log.debug("varbind is found: " + foundVarbind.toString());
String typeStr = foundVarbind.getType();
Object retValueObj = foundVarbind.getValue();
Variable retObject = (Variable) varHelper.createAsnObject(retValueObj, typeStr);
OID retOID = new OID(foundVarbind.getOid());
VariableBinding retVarbind = new VariableBinding(retOID, retObject);
retPdu.add(retVarbind);
} catch (Exception exception) {
log.warn("exception occured", exception);
// 未知のエラーを示す応答PDUを作成する
retPdu.setErrorStatus(SnmpConstants.SNMP_ERROR_GENERAL_ERROR);
retPdu.setErrorIndex(varCount);
if (foundVarbind != null) {
OID retOID = new OID(foundVarbind.getOid());
Variable retObject = new Null();
VariableBinding retVarbind = new VariableBinding(retOID, retObject);
retPdu.add(retVarbind);
}
}
}
return retPdu;
}
/**
* This method will be called whenever a pdu is received on the given port specified in the
* listen() method.
*/
public synchronized void processPdu(CommandResponderEvent cmdRespEvent) {
logger.info("Received PDU...");
PDU pdu = cmdRespEvent.getPDU();
if (pdu != null) {
try {
Event event;
Map<String, String> headers;
StringBuilder stringBuilder = new StringBuilder();
// getVariableBindings: Gets the variable binding vector.
Vector<? extends VariableBinding> vbs = pdu.getVariableBindings();
for (VariableBinding vb : vbs) {
// To extract only the value of the OID
// stringBuilder.append(vb.getVariable().toString());
stringBuilder.append(vb.toString() + ",");
}
String messageString = stringBuilder.toString();
// trick: remove the last comma
messageString = messageString.replaceAll(",$", "");
byte[] message = messageString.getBytes();
event = new SimpleEvent();
headers = new HashMap<String, String>();
headers.put("timestamp", String.valueOf(System.currentTimeMillis()));
logger.info("Message: {}", messageString);
event.setBody(message);
event.setHeaders(headers);
if (event == null) {
return;
}
// store the event to underlying channels(s)
getChannelProcessor().processEvent(event);
counterGroup.incrementAndGet("events.success");
} catch (ChannelException ex) {
counterGroup.incrementAndGet("events.dropped");
logger.error("Error writting to channel", ex);
return;
}
logger.info("Trap Type = " + pdu.getType());
logger.info("Variable Bindings = " + pdu.getVariableBindings());
int pduType = pdu.getType();
if ((pduType != PDU.TRAP)
&& (pduType != PDU.V1TRAP)
&& (pduType != PDU.REPORT)
&& (pduType != PDU.RESPONSE)) {
pdu.setErrorIndex(0);
pdu.setErrorStatus(0);
pdu.setType(PDU.RESPONSE);
StatusInformation statusInformation = new StatusInformation();
StateReference ref = cmdRespEvent.getStateReference();
try {
System.out.println(cmdRespEvent.getPDU());
cmdRespEvent
.getMessageDispatcher()
.returnResponsePdu(
cmdRespEvent.getMessageProcessingModel(),
cmdRespEvent.getSecurityModel(),
cmdRespEvent.getSecurityName(),
cmdRespEvent.getSecurityLevel(),
pdu,
cmdRespEvent.getMaxSizeResponsePDU(),
ref,
statusInformation);
} catch (MessageException ex) {
System.err.println("Error while sending response: " + ex.getMessage());
LogFactory.getLogger(SnmpRequest.class).error(ex);
}
}
}
}
