Java Code Examples for org.snmp4j.CommunityTarget#setRetries()

/**
* This method returns a Target, which contains information about
* where the data should be fetched and how.
* @return
*/
private Target getTarget() {
	if("3".equals(this.version))return getTargetV3();
	Address targetAddress = GenericAddress.parse(address);
	CommunityTarget target = new CommunityTarget();
	//logger.info("snmp version "+this.version+", community: "+this.community);
	if(this.community == null || this.community.isEmpty())
		target.setCommunity(new OctetString("public"));
	else 
		target.setCommunity(new OctetString(this.community));
	target.setAddress(targetAddress);
	target.setRetries(2);
	target.setTimeout(5000);
	target.setVersion(this.getVersionInt());
	return target;
}
 

/**
 * Method to create community target
 * @param community community name
 * @param address address
 * @param version SNMP version
 * @return community target
 */
protected static CommunityTarget createCommTarget(String community, String address, int version) {
    CommunityTarget target = new CommunityTarget();
    target.setVersion(version);
    target.setCommunity(new OctetString(community));
    target.setAddress(new UdpAddress(address));
    target.setRetries(0);
    target.setTimeout(500);
    return target;
}
 

/**
 * Create communityTarget.
 *
 * @param ip
 * @param community
 * @return CommunityTarget
 */
private static CommunityTarget createDefault(String ip, String community) {
    Address address = GenericAddress.parse(DEFAULT_PROTOCOL + ":" + ip
            + "/" + DEFAULT_PORT);
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString(community));
    target.setAddress(address);
    target.setVersion(DEFAULT_VERSION);
    target.setTimeout(DEFAULT_TIMEOUT); // milliseconds
    target.setRetries(DEFAULT_RETRY);
    return target;
}
 

/**
 * Create communityTarget.
 *
 * @param ip
 * @param community
 * @return CommunityTarget
 */
private static CommunityTarget createDefault(String ip, String community) {

    Address address = GenericAddress.parse(DEFAULT_PROTOCOL + ":" + ip + "/" + DEFAULT_PORT);
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString(community));
    target.setAddress(address);
    target.setVersion(DEFAULT_VERSION);
    target.setRetries(DEFAULT_RETRY);
    target.setTimeout(DEFAULT_TIMEOUT); // milliseconds
    return target;
}
 

private static CommunityTarget getTarget(DriverHandler handler) {
    SnmpDevice device = getDevice(handler);
    Address targetAddress = GenericAddress.parse(device.getProtocol() +
                                                 ":" + device.getSnmpHost() +
                                                 "/" + device.getSnmpPort());
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString(getDevice(handler).getCommunity()));
    target.setAddress(targetAddress);
    target.setRetries(3);
    target.setTimeout(1000L * 3L);
    target.setVersion(SnmpConstants.version2c);
    target.setMaxSizeRequestPDU(MAX_SIZE_RESPONSE_PDU);
    return target;
}
 

static CommunityTarget getCommunityTarget(String community, Address targetAddress) {
    final CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString(community));
    target.setAddress(targetAddress);
    target.setRetries(2);
    target.setTimeout(1500);
    target.setVersion(SnmpConstants.version2c);
    return target;
}
 

/**
 * Method to create community target
 * @param community community name
 * @param address address
 * @param version SNMP version
 * @return community target
 */
protected static CommunityTarget createCommTarget(String community, String address, int version) {
    CommunityTarget target = new CommunityTarget();
    target.setVersion(version);
    target.setCommunity(new OctetString(community));
    target.setAddress(new UdpAddress(address));
    target.setRetries(0);
    target.setTimeout(500);
    return target;
}
 

public static void sendTrapV1(String port) throws IOException {

        TransportMapping<?> transport = new DefaultUdpTransportMapping();
        transport.listen();

        CommunityTarget comtarget = new CommunityTarget();
        comtarget.setCommunity(new OctetString(new OctetString("public")));
        comtarget.setVersion(SnmpConstants.version1);
        comtarget.setAddress(new UdpAddress("127.0.0.1/" + port));
        comtarget.setRetries(2);
        comtarget.setTimeout(5000);

        PDU trap = new PDUv1();
        trap.setType(PDU.V1TRAP);

        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)));
        trap.add(new VariableBinding(SnmpConstants.sysDescr, new OctetString("System Description")));

        // Add Payload
        Variable var = new OctetString("some string");
        trap.add(new VariableBinding(oid, var));

        // Send
        Snmp snmp = new Snmp(transport);
        snmp.send(trap, comtarget);
        transport.close();
        snmp.close();

    }
 

private void createDevice(String ipAddress, int port) throws IOException {
    Address targetAddress = GenericAddress.parse("udp:" + ipAddress + "/" + port);
    TransportMapping transport = new DefaultUdpTransportMapping();
    transport.listen();
    snmp = new Snmp(transport);

    // setting up target
    target = new CommunityTarget();
    target.setCommunity(new OctetString("public"));
    target.setAddress(targetAddress);
    target.setRetries(3);
    target.setTimeout(1000L * 3L);
    target.setVersion(SnmpConstants.version2c);
    target.setMaxSizeRequestPDU(MAX_SIZE_RESPONSE_PDU);
}
 

/**
 * @{inheritDoc
 */
@Override
public void execute() {
    for (SnmpBindingProvider provider : providers) {
        for (String itemName : provider.getInBindingItemNames()) {
            int refreshInterval = provider.getRefreshInterval(itemName);

            Long lastUpdateTimeStamp = lastUpdateMap.get(itemName);
            if (lastUpdateTimeStamp == null) {
                lastUpdateTimeStamp = 0L;
            }

            long age = System.currentTimeMillis() - lastUpdateTimeStamp;
            boolean needsUpdate;
            if (refreshInterval == 0) {
                needsUpdate = false;
            } else {
                needsUpdate = age >= refreshInterval;
            }

            if (needsUpdate) {
                logger.debug("Item '{}' is about to be refreshed", itemName);

                // Set up the target
                CommunityTarget target = new CommunityTarget();
                target.setCommunity(provider.getCommunity(itemName));
                target.setAddress(provider.getAddress(itemName));
                target.setRetries(retries);
                target.setTimeout(timeout);
                target.setVersion(provider.getSnmpVersion(itemName));

                // Create the PDU
                PDU pdu = new PDU();
                pdu.add(new VariableBinding(provider.getOID(itemName)));
                pdu.setType(PDU.GET);

                logger.debug("SNMP: Send PDU {} {}", provider.getAddress(itemName), pdu);

                if (snmp == null) {
                    logger.error("SNMP: snmp not initialised - aborting request");
                } else {
                    sendPDU(target, pdu);
                }

                lastUpdateMap.put(itemName, System.currentTimeMillis());
            }
        }
    }

}