Examples with Snmp org.snmp4j.Snmp used on opensource projects

Example 1 with Snmp

use of org.snmp4j.Snmp in project mysql_perf_analyzer by yahoo.

the class SNMPClient method start.

/**
	 * Start the Snmp session. If you forget the listen() method you will not
	 * get any answers because the communication is asynchronous
	 * and the listen() method listens for answers.
	 * @throws IOException
	 */
public void start() throws IOException {
    TransportMapping transport = new DefaultUdpTransportMapping();
    snmp = new Snmp(transport);
    if (//add v3 support
    "3".equals(this.version)) {
        USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
        SecurityModels.getInstance().addSecurityModel(usm);
    }
    // Do not forget this line!
    transport.listen();
}

Example 2 with Snmp

use of org.snmp4j.Snmp in project opennms by OpenNMS.

the class Snmp4JUtils method convertPduToBytes.

/**
	 * @param address
	 * @param port
	 * @param community
	 * @param pdu
	 * 
	 * @return Byte array representing the {@link PDU} in either SNMPv1 or SNMPv2 
	 * format, depending on the type of the {@link PDU} object.
	 */
public static byte[] convertPduToBytes(InetAddress address, int port, String community, PDU pdu) throws Exception {
    final CountDownLatch latch = new CountDownLatch(1);
    final AtomicReference<byte[]> bytes = new AtomicReference<>();
    // IP address is optional when using the DummyTransport because
    // all requests are sent to the {@link DummyTransportResponder}
    final DummyTransport<IpAddress> transport = new DummyTransport<IpAddress>(null);
    final AbstractTransportMapping<IpAddress> responder = transport.getResponder(null);
    // Add a DummyTransportResponder listener that will receive the raw bytes of the PDU
    responder.addTransportListener(new TransportListener() {

        @Override
        public void processMessage(TransportMapping transport, Address address, ByteBuffer byteBuffer, TransportStateReference state) {
            byteBuffer.rewind();
            final byte[] byteArray = new byte[byteBuffer.remaining()];
            byteBuffer.get(byteArray);
            bytes.set(byteArray);
            byteBuffer.rewind();
            latch.countDown();
        }
    });
    // Create our own MessageDispatcher since we don't need to do all
    // of the crypto operations necessary to initialize SNMPv3 which is slow
    MessageDispatcher dispatcher = new MessageDispatcherImpl();
    dispatcher.addMessageProcessingModel(new MPv1());
    dispatcher.addMessageProcessingModel(new MPv2c());
    Snmp snmp = new Snmp(dispatcher, responder);
    snmp.listen();
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString(community));
    if (pdu instanceof PDUv1) {
        target.setVersion(SnmpConstants.version1);
    } else {
        target.setVersion(SnmpConstants.version2c);
    }
    target.setAddress(Snmp4JAgentConfig.convertAddress(address, port));
    snmp.send(pdu, target, transport);
    latch.await();
    return bytes.get();
}

Example 3 with Snmp

use of org.snmp4j.Snmp in project opennms by OpenNMS.

the class Snmp4JAgentConfig method createSnmpSession.

public Snmp createSnmpSession() throws IOException {
    final TransportMapping<?> transport = new DefaultUdpTransportMapping();
    final MessageDispatcher disp = new MessageDispatcherImpl();
    final Snmp session;
    // models we need for the specific agent
    if (!isSnmpV3()) {
        disp.addMessageProcessingModel(new MPv1());
        disp.addMessageProcessingModel(new MPv2c());
        session = new Snmp(disp, transport);
    } else {
        // Make a new USM
        final USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
        // Add the specified user to the USM
        usm.addUser(getSecurityName(), new UsmUser(getSecurityName(), getAuthProtocol(), getAuthPassPhrase(), getPrivProtocol(), getPrivPassPhrase()));
        disp.addMessageProcessingModel(new MPv3(usm));
        session = new Snmp(disp, transport);
    }
    return session;
}

Example 4 with Snmp

use of org.snmp4j.Snmp in project opennms by OpenNMS.

the class MockSnmpAgentIT method sendRequestV1V2.

private PDU sendRequestV1V2(PDU pdu, int version) {
    PDU response = null;
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString("public"));
    target.setAddress(new UdpAddress(InetAddressUtils.addr("127.0.0.1"), m_agent.getPort()));
    target.setVersion(version);
    TransportMapping<UdpAddress> transport = null;
    Snmp snmp = null;
    try {
        transport = new DefaultUdpTransportMapping();
        snmp = new Snmp(transport);
        transport.listen();
        ResponseEvent e = snmp.send(pdu, target);
        response = e.getResponse();
    } catch (final IOException e) {
        e.printStackTrace();
    } finally {
        if (snmp != null) {
            try {
                snmp.close();
            } catch (final IOException e) {
                e.printStackTrace();
            }
        }
        if (transport != null) {
            try {
                transport.close();
            } catch (final IOException e) {
                e.printStackTrace();
            }
        }
    }
    return response;
}

Example 5 with Snmp

use of org.snmp4j.Snmp in project opennms by OpenNMS.

the class BrocadeMibIT method sendRequestV1V2.

private PDU sendRequestV1V2(PDU pdu, int version) throws Exception {
    PDU response;
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString("public"));
    target.setAddress(new UdpAddress(m_agent.getInetAddress(), m_agent.getPort()));
    target.setVersion(version);
    TransportMapping<UdpAddress> transport = null;
    try {
        transport = new DefaultUdpTransportMapping();
        Snmp snmp = new Snmp(transport);
        transport.listen();
        ResponseEvent e = snmp.send(pdu, target);
        response = e.getResponse();
    } finally {
        if (transport != null) {
            transport.close();
        }
    }
    return response;
}