/**
* 向管理进程发送Trap报文
*
* @throws IOException
*/
public void sendPDU() throws IOException {
// 设置 target
CommunityTarget target = new CommunityTarget();
target.setAddress(targetAddress);
// 通信不成功时的重试次数
target.setRetries(2);
// 超时时间
target.setTimeout(1500);
// snmp版本
target.setVersion(SnmpConstants.version2c);
// 创建 PDU
PDU pdu = new PDU();
pdu.add(
new VariableBinding(new OID(".1.3.6.1.2.3377.10.1.1.1.1"), new OctetString("SnmpTrap")));
pdu.add(new VariableBinding(new OID(".1.3.6.1.2.3377.10.1.1.1.2"), new OctetString("JavaEE")));
pdu.add(
new VariableBinding(
new OID(".1.3.6.1.4.1.12612.220.11.1.3.0.1"), new OctetString("test_barco")));
pdu.setType(PDU.TRAP);
// 向Agent发送PDU，并接收Response
ResponseEvent respEvnt = snmp.send(pdu, target);
// 解析Response
if (respEvnt != null && respEvnt.getResponse() != null) {
Vector<VariableBinding> recVBs = respEvnt.getResponse().getVariableBindings();
for (int i = 0; i < recVBs.size(); i++) {
VariableBinding recVB = recVBs.elementAt(i);
System.out.println(recVB.getOid() + " : " + recVB.getVariable());
}
}
}
private PDU CreateAndSetPdu() {
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(oidFromInput)));
pdu.setType(PDU.GET);
pdu.setRequestID(new Integer32(2));
return pdu;
}
private ResponseEvent snmpGet(String targetOid) throws IOException {
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(targetOid)));
pdu.setType(PDU.GET);
// send the PDU
return snmp.send(pdu, target);
}
private void notifyResponse(ResponseEvent response, String targetOid) {
if (response == null) {
for (ResponseHandler responseHandler : responseHandlers) {
responseHandler.onTimeout(targetOid);
}
} else {
PDU responsePDU = response.getResponse();
int errorStatus = responsePDU.getErrorStatus();
int errorIndex = responsePDU.getErrorIndex();
String errorStatusText = responsePDU.getErrorStatusText();
switch (errorStatus) {
case SnmpConstants.SNMP_ERROR_SUCCESS:
for (ResponseHandler responseHandler : responseHandlers) {
responseHandler.onSuccess(targetOid);
}
break;
default:
if (log.isDebugEnabled()) {
log.debug("Error: Request Failed");
log.debug("Error Status = " + errorStatus);
log.debug("Error Index = " + errorIndex);
log.debug("Error Status Text = " + errorStatusText);
}
for (ResponseHandler responseHandler : responseHandlers) {
responseHandler.onError(targetOid, errorStatus, errorStatusText);
}
break;
}
}
}
/**
* This method creates the requst and puts it in an PDU object. This object will be returnd and
* used from Methods such as get,walk and getnext.
*
* @param type - the type of the response, possible are PDU.GET,PDU.GETNEXT, PDU.GETBULK
* @param oids - the requested OIDs
* @return - the request PDU
* @see org.snmp4j.ScopedPDU
*/
public PDU createPDU(int type, OID[] oids) {
// create the PDU
PDU requestPDU = new ScopedPDU();
requestPDU.setType(type);
// put the oid you want to get
for (OID oid : oids) {
requestPDU.add(new VariableBinding(oid));
}
return requestPDU;
}
public void testTrap() throws Exception {
File alarmsFile = new File("alarms.txt");
alarmsFile.delete();
PDU trap = new PDU();
trap.setType(PDU.TRAP);
OID oid = new OID("1.2.3.4.5");
trap.add(new VariableBinding(SnmpConstants.snmpTrapOID, oid));
trap.add(
new VariableBinding(SnmpConstants.sysUpTime, new TimeTicks(5000))); // put your uptime here
trap.add(new VariableBinding(SnmpConstants.sysDescr, new OctetString("System Description")));
Variable alarmCode = new OctetString("777");
Variable agentId = new OctetString("AGENT_ID");
Variable alarmText = new OctetString("ALARM");
Variable agentAddress = new OctetString("127.0.0.1/161");
trap.add(new VariableBinding(new OID("1.2.3.4.5.1"), alarmCode));
trap.add(new VariableBinding(new OID("1.2.3.4.5.2"), agentId));
trap.add(new VariableBinding(new OID("1.2.3.4.5.3"), alarmText));
trap.add(new VariableBinding(new OID("1.2.3.4.5.4"), agentAddress));
server.readAndSaveTrap(trap);
assertTrue(alarmsFile.exists());
String fileContent = SnmpNmsTest.readFileAsString("alarms.txt");
assertTrue(fileContent.indexOf("AGENT_ID") > -1);
assertTrue(fileContent.indexOf("777") > -1);
assertTrue(fileContent.indexOf("ALARM") > -1);
}
/**
* This method is capable of handling multiple OIDs
*
* @param oids
* @return
* @throws IOException
*/
public ResponseEvent get(OID... oids) throws IOException {
PDU pdu = new PDU();
for (OID oid : oids) {
pdu.add(new VariableBinding(oid));
}
pdu.setType(PDU.GET);
ResponseEvent event = snmp.send(pdu, getTarget(), null);
if (event != null) {
return event;
}
throw new RuntimeException("GET timed out");
}
public void updateByValue(
URI url, List<Variable> values, SnmpUriCallback callback, Object userObject)
throws UnknownHostException {
Request request = createSnmpRequest(url);
PDU pdu = request.getPdu();
pdu.setType(PDU.SET);
OID[] oids = request.getOIDs();
for (int i = 0; i < oids.length && i < values.size(); i++) {
pdu.add(new VariableBinding(oids[i], values.get(i)));
}
sendSnmpRequest(request, pdu, url, callback, userObject);
}
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();
}
public void sendByBinding(
URI url,
List<VariableBinding> values,
int pduType,
SnmpUriCallback callback,
Object userObject)
throws UnknownHostException {
Request request = createSnmpRequest(url);
PDU pdu = request.getPdu();
pdu.setType(pduType);
for (VariableBinding vb : values) {
pdu.add(vb);
}
sendSnmpRequest(request, pdu, url, callback, userObject);
}
/**
* This method returns true or false, which depend on the response PDU. If the response PDU is not
* null and don't have an error, true will be returned.
*
* @param responsePDU the responsePDU, which will be checked for errors.
* @return - true if no error was invoked else false.
* @throws PDURequestFailedException - If an error occurred in the response PDU.
* @throws SNMPTimeOutException - If a timeout occured
* @see org.snmp4j.PDU
*/
public boolean checkResponsePDU(PDU responsePDU)
throws PDURequestFailedException, SNMPTimeOutException {
if (responsePDU != null)
if (responsePDU.getErrorStatus() == PDU.noError) return true;
else throw new PDURequestFailedException(responsePDU);
else throw new SNMPTimeOutException("Timeout: No Response from " + authentication.getAddress());
}
private PDU createPDU(SnmpTrapInfo snmpTrapInfo) {
PDU trap = new PDU();
trap.setType(PDU.TRAP);
int alertType = snmpTrapInfo.getAlertType() + 1;
if (alertType > 0) {
trap.add(
new VariableBinding(SnmpConstants.sysUpTime, new OctetString(new Date().toString())));
trap.add(
new VariableBinding(
SnmpConstants.snmpTrapOID, getOID(CsSnmpConstants.TRAPS_PREFIX + alertType)));
trap.add(
new VariableBinding(
getOID(CsSnmpConstants.DATA_CENTER_ID),
new UnsignedInteger32(snmpTrapInfo.getDataCenterId())));
trap.add(
new VariableBinding(
getOID(CsSnmpConstants.POD_ID), new UnsignedInteger32(snmpTrapInfo.getPodId())));
trap.add(
new VariableBinding(
getOID(CsSnmpConstants.CLUSTER_ID),
new UnsignedInteger32(snmpTrapInfo.getClusterId())));
if (snmpTrapInfo.getMessage() != null) {
trap.add(
new VariableBinding(
getOID(CsSnmpConstants.MESSAGE), new OctetString(snmpTrapInfo.getMessage())));
} else {
throw new CloudRuntimeException(" What is the use of alert without message ");
}
if (snmpTrapInfo.getGenerationTime() != null) {
trap.add(
new VariableBinding(
getOID(CsSnmpConstants.GENERATION_TIME),
new OctetString(snmpTrapInfo.getGenerationTime().toString())));
} else {
trap.add(new VariableBinding(getOID(CsSnmpConstants.GENERATION_TIME)));
}
} else {
throw new CloudRuntimeException(" Invalid alert Type ");
}
return trap;
}
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);
}
}
public String snmpGet(String strAddress, String community, String strOID) // SNMPget
{
String str = "";
try {
OctetString community1 = new OctetString(community);
strAddress = strAddress + "/" + 161; // Direccion + Puerto SNMP
Address targetaddress = new UdpAddress(strAddress); // direccion con puerto
TransportMapping transport = new DefaultUdpTransportMapping();
transport.listen();
/*
* Este metodo regresa un Target, que contiene informacion acerca de los
* datos y como deben ser mostrados y sus rangos.
*/
CommunityTarget comtarget = new CommunityTarget();
comtarget.setCommunity(community1);
comtarget.setVersion(SnmpConstants.version1);
comtarget.setAddress(targetaddress);
comtarget.setRetries(2);
comtarget.setTimeout(5000);
PDU pdu = new PDU();
ResponseEvent response;
Snmp snmp;
pdu.add(new VariableBinding(new OID(strOID)));
pdu.setType(PDU.GET);
snmp = new Snmp(transport);
response = snmp.get(pdu, comtarget);
if (response != null) {
if (response.getResponse().getErrorStatusText().equalsIgnoreCase("Success")) {
PDU pduresponse = response.getResponse();
str = pduresponse.getVariableBindings().firstElement().toString();
if (str.contains("=")) {
int len = str.indexOf("=");
str = str.substring(len + 1, str.length());
}
}
} else {
System.out.println("Feeling like a TimeOut occured ");
}
// En caso de que ocurra un Time out
snmp.close(); // cierra conexión
} catch (Exception e) {
}
System.out.println("Response= " + str); // en caso de ocurrio error lo arroja
return str;
}
@Override
public void onResponse(ResponseEvent event) {
SnmpUriResponse response = new SnmpUriResponse(SnmpUriResponse.Type.TIMEOUT);
PDU responsePDU = event.getResponse();
if (responsePDU != null) {
if (responsePDU.getErrorStatus() != PDU.noError) {
response = new SnmpUriResponse(responsePDU.getErrorStatus());
} else {
response =
new SnmpUriResponse(
Collections.singletonList(
responsePDU
.getVariableBindings()
.toArray(new VariableBinding[responsePDU.size()])));
}
}
callback.onResponse(response, url, event.getUserObject());
}
public void SentGetSnmp() throws IOException {
TransportMapping transport = new DefaultUdpTransportMapping();
transport.listen();
// Target
CommunityTarget target = CreateAndSetTarget();
// PDU
PDU pdu = CreateAndSetPdu();
// SNMP
Snmp snmp = new Snmp(transport);
// System.out.println("Sending request to " + ipFromInput + " ...");
ResponseEvent response = snmp.get(pdu, target);
if (response != null) {
// System.out.println("Got response from " + ipFromInput);
PDU responsePdu = response.getResponse();
if (responsePdu != null) {
int errorStatus = responsePdu.getErrorStatus();
int errorIndex = responsePdu.getErrorIndex();
String errorStatusText = responsePdu.getErrorStatusText();
if (errorStatus == PDU.noError) {
readResponse(responsePdu.getVariableBindings());
// System.out.println(responsePdu.getVariableBindings().getClass());
// System.out.println("SNMP get response: " + responsePdu.getVariableBindings());
} else {
System.out.println("Error: Request Failed");
System.out.println("Error Status: " + errorStatus);
System.out.println("Error Index: " + errorIndex);
System.out.println("Error Status Text: " + errorStatusText);
}
} else {
System.out.println("Error: PDU response is null");
}
} else {
System.out.println("Error: Agent Timeout");
}
snmp.close();
}
/**
* 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();
}
void snmpSetValue(String oid, int syntax, String value) throws SnmpException {
VariableBinding varbind = getVarBindForSetRequest(oid, syntax, value);
PDU request = new PDU();
request.setType(PDU.SET);
request.add(varbind);
PDU response = null;
long startTime = System.currentTimeMillis();
try {
Snmp snmp = new Snmp(new DefaultUdpTransportMapping());
snmp.listen();
ResponseEvent responseEvent = snmp.send(request, getTarget(getWriteCommunity()));
response = responseEvent.getResponse();
// System.out.println(response);
} catch (Exception e) {
e.printStackTrace();
throw new SnmpException(e.getMessage());
}
}
/**
* The method get can be specified with an Array of requested OIDs. A Vector with elements of the
* subclass VariableBinding will be returned. OID requested from the method GET can only return a
* value. Therefore the OIDd must be a scalar and not a branch.
*
* @param oids - the requested OIDs
* @return - a Vector with VariableBindings
* @throws SNMPTimeOutException - will be thrown if a timeout with request happens
* @throws PDURequestFailedException - will be thrown if an error occurs within the request
* @see org.snmp4j.smi.VariableBinding
*/
public Vector<? extends VariableBinding> get(OID[] oids)
throws SNMPTimeOutException, PDURequestFailedException {
ResponseEvent responseEvent = null;
Vector<? extends VariableBinding> vbs = null;
try {
// send the PDU
responseEvent = snmp.send(createPDU(PDU.GET, oids), authentication.getTarget());
Logger.getLogger(SnmpManager.class.getName()).log(Level.INFO, responseEvent.toString());
} catch (IOException e) {
System.err.println(e.getMessage());
}
// extract the response PDU (could be null if timed out)
if (responseEvent != null) {
PDU responsePDU = responseEvent.getResponse();
if (checkResponsePDU(responsePDU)) vbs = responsePDU.getVariableBindings();
} else {
throw new SNMPTimeOutException();
}
return vbs;
}
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 browse(URI url, SnmpUriCallback callback, Object userObject)
throws UnknownHostException {
Request request = createSnmpRequest(url);
PDU pdu = request.getPdu();
switch (request.getType()) {
case GET:
pdu.setType(PDU.GET);
pdu.addAll(VariableBinding.createFromOIDs(request.getOIDs()));
sendSnmpRequest(request, pdu, url, callback, userObject);
break;
case NEXT:
pdu.setType(PDU.GETNEXT);
pdu.addAll(VariableBinding.createFromOIDs(request.getOIDs()));
sendSnmpRequest(request, pdu, url, callback, userObject);
break;
case SUBTREE:
TreeUtils treeUtils = new TreeUtils(snmp, pduFactory);
TreeListener treeListener = new AsyncTreeListener(url, callback);
treeUtils.walk(request.getTarget(), request.getOIDs(), userObject, treeListener);
break;
}
}
/**
* This method returns a Target, which contains information about where the data should be fetched
* and how.
*
* @return
* @throws IOException
*/
private Target getTarget() throws IOException {
Address targetAddress = GenericAddress.parse(address);
// System.out.println(targetAddress.isValid());
// CommunityTarget target = new CommunityTarget();
// target.setCommunity(new OctetString("public"));
// target.setAddress(targetAddress);
// System.out.println(target.getAddress());
// target.setRetries(2);
// target.setTimeout(5500);
// target.setVersion(SnmpConstants.version2c);
// System.out.println(target.toString());
// return target;
CommunityTarget target = new CommunityTarget();
target.setCommunity(new OctetString(COMMUNITYKEY));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(100);
target.setVersion(SnmpConstants.version1);
// creating PDU
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(new int[] {1, 3, 6, 1, 2, 1, 1, 1})));
pdu.add(new VariableBinding(new OID(new int[] {1, 3, 6, 1, 2, 1, 1, 2})));
pdu.setType(PDU.GETNEXT);
// sending request
ResponseListener listener =
new ResponseListener() {
public void onResponse(ResponseEvent event) {
// Always cancel async request when response has been received
// otherwise a memory leak is created! Not canceling a request
// immediately can be useful when sending a request to a broadcast
// address.
((Snmp) event.getSource()).cancel(event.getRequest(), this);
// System.out.println("Received response PDU is: "+event.getResponse());
}
};
snmp.send(pdu, target, null, listener);
return target;
}
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
TransportMapping transport = new DefaultUdpTransportMapping();
Snmp snmp = new Snmp(transport);
MessageDispatcherImpl dispatcher = new MessageDispatcherImpl();
transport.listen();
Address targetAddress = new UdpAddress("202.144.0.178/161");
// setting up target
CommunityTarget target = new CommunityTarget();
target.setCommunity(new OctetString("public"));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(1500);
target.setVersion(SnmpConstants.version1);
// creating PDU
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(new int[] {1, 3, 6, 1, 2, 1, 1, 1})));
pdu.add(new VariableBinding(new OID(new int[] {1, 3, 6, 1, 2, 1, 1, 2})));
pdu.setType(PDU.GETNEXT);
// sending request
ResponseListener listener =
new ResponseListener() {
public void onResponse(ResponseEvent event) {
// Always cancel async request when response has been received
// otherwise a memory leak is created! Not canceling a request
// immediately can be useful when sending a request to a
// broadcast
// address.
((Snmp) event.getSource()).cancel(event.getRequest(), this);
System.out.println("Received response PDU is: " + event.getResponse());
}
};
snmp.set(pdu, target, null, listener);
// snmp.sendPDU(pdu, target, null, listener);
}
public static List<String> get(
Snmp snmp, String address, String community, int version, int retry, String[] oids) {
List<String> list = new ArrayList<String>();
Address targetAddress = GenericAddress.parse(address);
CommunityTarget target = new CommunityTarget();
target.setCommunity(new OctetString(community));
target.setAddress(targetAddress);
target.setVersion(version);
target.setTimeout(1000);
target.setRetries(retry);
PDU pdu = new PDU();
pdu.setType(PDU.GET);
for (String oid : oids) {
pdu.add(new VariableBinding(new OID(oid)));
}
try {
ResponseEvent response = snmp.send(pdu, target);
PDU resposePdu = response.getResponse();
if (resposePdu != null) {
Vector<?> v = resposePdu.getVariableBindings();
for (Object o : v) {
if (o instanceof VariableBinding) {
VariableBinding vb = (VariableBinding) o;
String r = vb.getVariable().toString();
list.add(r);
}
}
}
} catch (IOException e) {
e.printStackTrace();
}
return list;
}
public void testMakeGet() throws Exception {
assertTrue(true);
File queriesFile = new File("queries.txt");
queriesFile.delete();
PDU response = new PDU();
OID oid = new OID(".1.3.6.1.2.1.1.1.0");
Variable systemDescription = new OctetString("System");
VariableBinding binding = new VariableBinding(oid, systemDescription);
Vector<VariableBinding> variableBindings = new Vector<VariableBinding>();
variableBindings.add(binding);
response.setVariableBindings(variableBindings);
server.readAndSaveGetResult(response, "AGENT_ID");
assertTrue(queriesFile.exists());
String fileContent = SnmpNmsTest.readFileAsString("queries.txt");
assertTrue(fileContent.indexOf("AGENT_ID") > -1);
assertTrue(fileContent.indexOf("System") > -1);
}
public void snmpSet(String strAddress, String community, String strOID, int Value) {
strAddress = strAddress + "/" + 161; // Direccion + Puerto SNMP
Address targetAddress = GenericAddress.parse(strAddress); // direccion con puerto
Snmp snmp;
try {
TransportMapping transport = new DefaultUdpTransportMapping();
snmp = new Snmp(transport);
transport.listen();
/*
* Este metodo regresa un Target, que contiene informacion acerca de los
* datos y como deben ser mostrados y sus rangos.
*/
CommunityTarget target =
new CommunityTarget(); // representa las propiedades del target SNMP basado en proceso de
// modelos
target.setCommunity(new OctetString(community));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(5000);
target.setVersion(SnmpConstants.version1);
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(strOID), new Integer32(Value)));
pdu.setType(PDU.SET);
ResponseListener listener =
new ResponseListener() {
@Override // public method declared in Object
public void onResponse(ResponseEvent event) {
((Snmp) event.getSource()).cancel(event.getRequest(), this);
System.out.println("Set Status is:" + event.getResponse().getErrorStatusText());
// Impresion del status de la respuesta
}
};
snmp.send(pdu, target, null, listener); // envio de parametros
snmp.close(); // cierra socket snmp
} catch (Exception e) {
}
}
/**
* Read a variable saved into @DriverConfiguration object
*
* @param propertyConfiguration driver configuration object
* @throws GenericException if configuration fatal error
*/
@Override
public void readValue(DriverConfiguration propertyConfiguration) throws GenericException {
try {
ResponseEvent response = snmpGet(String.valueOf(propertyConfiguration.getValue()));
if (response != null) {
if (log.isDebugEnabled()) {
log.debug("Got Snmp Get Response from Agent");
}
PDU responsePDU = response.getResponse();
if (responsePDU != null) {
int errorStatus = responsePDU.getErrorStatus();
if (errorStatus == PDU.noError) {
Vector<? extends VariableBinding> variableBindings = responsePDU.getVariableBindings();
if (log.isDebugEnabled()) {
log.debug(String.format("Snmp Get Response = %s", variableBindings));
}
VariableBinding variableBinding = variableBindings.get(0);
Variable variable = variableBinding.getVariable();
Object value = convert(variable, getValueType(variable));
setValue(propertyConfiguration, value);
} else {
notifyResponse(response, propertyConfiguration.getName());
}
} else {
if (log.isDebugEnabled()) {
log.debug("Error: Response PDU is null");
}
}
} else {
notifyResponse(response, propertyConfiguration.getName());
}
} catch (Exception e) {
throw new GenericException(e);
}
}
private static Vector<VariableBinding> getTableRow(
Snmp snmp, CommunityTarget target, String[] colOids, String firstOid) {
PDU pdu = new PDU();
pdu.setType(PDU.GETNEXT);
for (String oid : colOids) {
pdu.add(new VariableBinding(new OID(oid)));
}
Vector<VariableBinding> v = null;
try {
ResponseEvent response = snmp.send(pdu, target);
PDU resposePdu = response.getResponse();
if (resposePdu != null) {
v = resposePdu.getVariableBindings();
if (v != null && v.size() > 0) {
VariableBinding vb = v.get(0);
String oid = vb.getOid().toString();
if (!oid.startsWith(firstOid)) return null;
}
}
} catch (IOException e) {
e.printStackTrace();
}
return v;
}
public static List<String[]> getTable(
Snmp snmp, String address, String community, int version, int retry, String[] colOids) {
List<String[]> list = new ArrayList<String[]>();
Address targetAddress = GenericAddress.parse(address);
CommunityTarget target = new CommunityTarget();
target.setCommunity(new OctetString(community));
target.setAddress(targetAddress);
target.setVersion(version);
target.setTimeout(1000);
target.setRetries(retry);
PDU pdu = new PDU();
pdu.setType(PDU.GETNEXT);
for (String oid : colOids) {
pdu.add(new VariableBinding(new OID(oid)));
}
int i = 0;
String firstOid = colOids[0];
Vector<VariableBinding> row = null;
do {
row = getTableRow(snmp, target, colOids, firstOid);
if (row != null && colOids.length == row.size()) {
String[] ss = new String[colOids.length];
for (int n = 0; n < colOids.length; n++) {
VariableBinding vb = row.get(n);
String r = vb.getVariable().toString();
colOids[n] = vb.getOid().toString();
ss[n] = r;
}
list.add(ss);
}
} while (i++ < 200 && row != null);
return list;
}
/**
* @param ip
* @param community
*/
public static void snmpGetList(String ip, String community, List<String> oidList) {
CommunityTarget target = SnmpUtil.createDefault(ip, community);
Snmp snmp = null;
try {
PDU pdu = new PDU();
for (String oid : oidList) {
pdu.add(new VariableBinding(new OID(oid)));
}
DefaultUdpTransportMapping transport = new DefaultUdpTransportMapping();
transport.listen();
snmp = new Snmp(transport);
System.out.println("------->发送消息<-------");
pdu.setType(PDU.GET);
ResponseEvent respEvent = snmp.send(pdu, target);
System.out.println("PeerAddress:" + respEvent.getPeerAddress());
PDU response = respEvent.getResponse();
if (response == null) {
System.out.println("response is null, request time out");
} else {
System.out.println("response pdu size is " + response.size());
for (int i = 0; i < response.size(); i++) {
VariableBinding vb = response.get(i);
System.out.println(vb.getOid() + " = " + vb.getVariable());
}
}
System.out.println("SNMP GET List OID value finished !");
} catch (Exception e) {
e.printStackTrace();
System.out.println("SNMP GetList Exception:" + e);
} finally {
if (snmp != null) {
try {
snmp.close();
} catch (IOException ex1) {
snmp = null;
}
}
}
}