Java PDU.getVariableBindings方法代码示例

import org.snmp4j.PDU; //导入方法依赖的package包/类
public static void main(String[] args) throws IOException, InterruptedException {
    Snmp snmp = new Snmp(new DefaultUdpTransportMapping());
    snmp.listen();

    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString("public"));
    target.setVersion(SnmpConstants.version2c);
    target.setAddress(new UdpAddress("23.23.52.11/161"));
    target.setTimeout(3000);    //3s
    target.setRetries(1);

    PDU pdu = new PDU();
    pdu.setType(PDU.GETBULK);
    pdu.setMaxRepetitions(1); 
    pdu.setNonRepeaters(0);
    VariableBinding[] array = {new VariableBinding(new OID("1.3.6.1.4.1.2000.1.2.5.1.3")),
                               new VariableBinding(new OID("1.3.6.1.4.1.2000.1.3.1.1.7")),
                               new VariableBinding(new OID("1.3.6.1.4.1.2000.1.3.1.1.10")),
                               new VariableBinding(new OID("1.3.6.1.4.1.2000.1.2.5.1.19"))};
    pdu.addAll(array);

    //pdu.add(new VariableBinding(new OID("1.3.6.1.4.1.2000.1.2.5.1.3"))); 

    ResponseEvent responseEvent = snmp.send(pdu, target);
    PDU response = responseEvent.getResponse();

    if (response == null) {
	    System.out.println("TimeOut...");
    } else {
	    if (response.getErrorStatus() == PDU.noError) {
               Vector<? extends VariableBinding> vbs = response.getVariableBindings();
               for (VariableBinding vb : vbs) {
                   System.out.println(vb.getVariable().toString());
	        }
	    } else {
	        System.out.println("Error:" + response.getErrorStatusText());
	    }
    }
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
@Ignore ("Need Mock SSH Server")
@Test
public void testSnmpGet() throws InterruptedException {
	out.setMinimumExpectedMessageCount(1);
	out.await(10,TimeUnit.SECONDS);
	out.assertIsSatisfied();
	
	CamelContext context = context();
	
	List<Exchange> exchanges = out.getExchanges();
	for (Exchange exchange : exchanges) {
		Message message = exchange.getOut();
		SnmpMessage snmpMessage = message.getBody(SnmpMessage.class);
		LOG.info("body: ",snmpMessage);
		assertNotNull("Body is null",snmpMessage);
		PDU pdu = snmpMessage.getSnmpMessage();
		for (Object o :  pdu.getVariableBindings()) {
			VariableBinding b = (VariableBinding)o;
			LOG.info("oid: {}, value: {}",b.getOid().toString(),b.getVariable().toString());
		}
	}
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
public static Map<OID, Variable> convertToMap(PDU pdu){
	Map<OID, Variable> retVal = null;
	if(pdu != null){
		retVal = new HashMap<OID, Variable>();
		Vector<? extends VariableBinding> vect = pdu.getVariableBindings();
		for(VariableBinding curr : vect){
			retVal.put(curr.getOid(), curr.getVariable());
		}
	}
	return retVal;
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
static public Vector<VariableBinding> extractVarBinds(Exchange exchange) {
PDU pdu = SnmpExchangeUtils.extractPDU(exchange);
Vector<VariableBinding> varBinds = new Vector<VariableBinding>();
for (VariableBinding var : pdu.getVariableBindings()) {
	varBinds.addElement(var);
}
LOG.debug("Extracting {} variable bindings from PDU",varBinds.size());
return varBinds;
  }
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
public Map<OID, Variable> get(Collection<OID> oids) throws IOException {
    Map<OID, Variable> map = new LinkedHashMap<OID, Variable>();
    PDU request = createPDU();
    request.setType(PDU.GET);
    request.setVariableBindings(wrap(oids));
    boolean debug = log.isDebugEnabled();
    if (debug)
        log.debug("request " + request);
    ResponseEvent re = snmp.send(request, this.target);
    PDU response = re.getResponse();
    if (debug)
        log.debug("response " + response);
    if (response == null) {
        throw new NoResponseException("no response querying " + oids);
    }
    if (re.getError() != null)
        throw new IOException(re.getError());
    Vector<? extends VariableBinding> vbs = response.getVariableBindings();
    if (vbs.size() == 1) {
        String error = Errors.get(vbs.get(0).getOid());
        if (error != null)
            throw new IOException("got SNMP error " + error);
    }
    for (VariableBinding vb : vbs) {
        OID oid = vb.getOid();
        map.put(oid, vb.getVariable());
    }
    return map;
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
/**
 * @param request
 * @return
 */
@SuppressWarnings("unchecked")
private PDU processGet(PDU request) {
    PDU response = request;
    response.setErrorIndex(0);
    response.setErrorStatus(0);
    response.setType(PDU.RESPONSE);
    
    Vector<VariableBinding> varBinds = response.getVariableBindings();
    for(int i = 0; i < varBinds.size(); i++) {
        VariableBinding varBind = varBinds.get(i);
        VariableBinding nextVarBind = m_agent.get(varBind.getOid());
        if (nextVarBind == null) {
            if (response instanceof PDUv1) {
                if (response.getErrorIndex() == 0) {
                    response.setErrorIndex(i+1);
                    response.setErrorStatus(PDU.noSuchName);
                } 
            } else {
                varBind.setVariable(Null.endOfMibView);
            }
        } else {
            response.set(i, nextVarBind);
        }
    }
    
    return response;
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
/**
 * @param request
 * @return
 */
@SuppressWarnings("unchecked")
private PDU processGetNext(PDU request) {
    PDU response = request;
    response.setErrorIndex(0);
    response.setErrorStatus(0);
    response.setType(PDU.RESPONSE);
    
    Vector<VariableBinding> varBinds = response.getVariableBindings();
    for(int i = 0; i < varBinds.size(); i++) {
        VariableBinding varBind = varBinds.get(i);
        VariableBinding nextVarBind = m_agent.getNext(varBind.getOid());
        if (nextVarBind == null) {
            if (response instanceof PDUv1) {
                if (response.getErrorIndex() == 0) {
                    response.setErrorIndex(i+1);
                    response.setErrorStatus(PDU.noSuchName);
                } 
            } else {
                varBind.setVariable(Null.endOfMibView);
            }
        } else {
            response.set(i, nextVarBind);
        }
    }
    
    return response;

}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
/**
 * Converts the given snmp pdu to a String body.
 *
 * @param pdu       the snmp pdu
 * @return  the text content
 */
@Converter
public static String toString(PDU pdu) {
 // the output buffer
    StringBuilder sb = new StringBuilder();

    // prepare the header
    if (pdu.getType() == PDU.V1TRAP) {
        sb.append("<" + SNMP_TAG + " messageType=\"v1\">");
    } else {
        sb.append(SNMP_TAG_OPEN);
    }

    // Extract SNMPv1 specific variables
    if (pdu.getType() == PDU.V1TRAP) {
        PDUv1 v1pdu = (PDUv1) pdu;
        entryAppend(sb, "enterprise", v1pdu.getEnterprise().toString());
        entryAppend(sb, "agent-addr", v1pdu.getAgentAddress().toString());
        entryAppend(sb, "generic-trap", Integer.toString(v1pdu.getGenericTrap()));
        entryAppend(sb, "specific-trap", Integer.toString(v1pdu.getSpecificTrap()));
        entryAppend(sb, "time-stamp", Long.toString(v1pdu.getTimestamp()));
    }

    // now loop all variables of the response
    for (Object o : pdu.getVariableBindings()) {
        VariableBinding b = (VariableBinding)o;

        sb.append(ENTRY_TAG_OPEN);
        sb.append(OID_TAG_OPEN);
        sb.append(b.getOid().toString());
        sb.append(OID_TAG_CLOSE);
        sb.append(VALUE_TAG_OPEN);
        sb.append(StringHelper.xmlEncode(b.getVariable().toString()));
        sb.append(VALUE_TAG_CLOSE);
        sb.append(ENTRY_TAG_CLOSE);
    }

    // prepare the footer
    sb.append(SNMP_TAG_CLOSE);

    return sb.toString();
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
/**
 * Converts an {@link SnmpMessage}/{@link PDU} into a {@link RawEvent}
 * 
 * @param message - Contains a {@link SnmpMessage}
 * @param pdu - Contains a {@link PDU} with the actual trap contents
 * @param event - {@link RawEvent} to be populated.
 */
public void processV2Trap(SnmpMessage message, PDU pdu, RawEvent event) {
	String specificTrap = "";
	String hostname = getPeerAddress(message);
	
	// CREATED_AT
	event.setCreatedAt(new Date());

	// FINGERPRINT_FIELDS
	event.addFingerprintField(HOSTNAME_PROPERTY_NAME);
	
	// ORGANIZATION_ID - TBD: Override based on content of the PDU?
	
	// PROPERTIES
	event.addProperty(HOSTNAME_PROPERTY_NAME, hostname);
	event.addProperty("error_status", pdu.getErrorStatusText());
	
	
	// Get the variable bindings from the trap and create properties in the event
	Vector<? extends VariableBinding> varBinds = pdu.getVariableBindings();
	for (VariableBinding var : varBinds) {
		OID oid = var.getOid();

		if (oid.startsWith(SnmpConstants.snmpTraps) ||
			oid.startsWith(SnmpConstants.snmpTrapOID)) {
			specificTrap = var.toValueString();
			event.addProperty("trap",specificTrap);
			// MESSAGE
			event.setMessage(var.toValueString());
		}
		else {
			event.addProperty(var.getOid().toString(),var.toValueString());
			event.addFingerprintField(var.getOid().toString());
		}
		mapVarbindToEvent(event,var);
	}
	
	// RECEIVED_AT - Default to value set by Boundary
	
	// SENDER
	event.getSender().setRef(SENDER_REF).setType(SENDER_TYPE);

	// SEVERITY - TBD: set the severity based on content of the trap
	event.setSeverity(Severity.WARN);

	// SOURCE
	event.getSource().setRef(hostname).setType("host");
	
	//STATUS - TBD: Set status based on severity??
	event.setStatus(Status.OPEN);

	// TAGS
	event.addTag(hostname);
	
	// TITLE
	event.setTitle(specificTrap + " trap received from " + hostname);
}
 

import org.snmp4j.PDU; //导入方法依赖的package包/类
@Override
public Status process() throws EventDeliveryException {
    Status status = null;
    counterGroup = new CounterGroup();

    try {
        // This try clause includes whatever Channel operations you want to do
        Event event = new SimpleEvent(); 
        Map <String, String> headers = new HashMap<String, String>();
        StringBuilder stringBuilder = new StringBuilder();

        ResponseEvent responseEvent = snmp.send(pdu, target);
        PDU response = responseEvent.getResponse();

        DateFormat dateFormat = new SimpleDateFormat("MM dd HH:mm:ss yyyy");
        Date date = new Date();

        stringBuilder.append(date + ",");
        stringBuilder.append(bindAddress + ",");

        if (response == null) {
            logger.info("TimeOut...");
        } else {
            if (response.getErrorStatus() == PDU.noError) {
                Vector<? extends VariableBinding> vbs = response.getVariableBindings();
                for (VariableBinding vb : vbs) {
                    //System.out.println(vb.getVariable().toString());
                    stringBuilder.append(vb.getVariable().toString() + ",");
                                       }
            } else {
                logger.info("Error:" + response.getErrorStatusText());
            }
        }

        String messageString = stringBuilder.toString();
        // trick: remove the last comma
        messageString = messageString.replaceAll(",$", "");
        byte[] message = messageString.getBytes();

        headers.put("timestamp", String.valueOf(System.currentTimeMillis()));
        logger.info("Message: {}", messageString);
        event.setBody(message);
        event.setHeaders(headers);

        // Store the Event into this Source's associated Channel(s)
        getChannelProcessor().processEvent(event);
        counterGroup.incrementAndGet("events.success");

        Thread.sleep(delayQuery*1000);
        status = Status.READY;

    } catch (ChannelException|IOException|InterruptedException ex) {
        counterGroup.incrementAndGet("events.dropped");
        logger.error("Error writting to channel", ex);
        // Log exception, handle individual exceptions as needed
        status = Status.BACKOFF;

        // re-throw all Errors
        //if (t instanceof Error) {
        //    throw (Error);
        //}
    }
    return status;
}