Examples with ResponseEvent org.snmp4j.event.ResponseEvent used on opensource projects

Example 6 with ResponseEvent

use of org.snmp4j.event.ResponseEvent 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;
}

Example 7 with ResponseEvent

use of org.snmp4j.event.ResponseEvent in project camel by apache.

the class SnmpProducer method process.

@Override
public void process(final Exchange exchange) throws Exception {
    // load connection data only if the endpoint is enabled
    Snmp snmp = null;
    TransportMapping<? extends Address> transport = null;
    try {
        LOG.debug("Starting SNMP producer on {}", this.endpoint.getAddress());
        // either tcp or udp
        if ("tcp".equals(this.endpoint.getProtocol())) {
            transport = new DefaultTcpTransportMapping();
        } else if ("udp".equals(this.endpoint.getProtocol())) {
            transport = new DefaultUdpTransportMapping();
        } else {
            throw new IllegalArgumentException("Unknown protocol: {} " + this.endpoint.getProtocol());
        }
        snmp = new Snmp(transport);
        LOG.debug("Snmp: i am sending");
        snmp.listen();
        ResponseEvent responseEvent = snmp.send(this.pdu, this.target);
        LOG.debug("Snmp: sended");
        if (responseEvent.getResponse() != null) {
            exchange.getIn().setBody(new SnmpMessage(responseEvent.getResponse()));
        } else {
            throw new TimeoutException("SNMP Producer Timeout");
        }
    } finally {
        try {
            transport.close();
        } catch (Exception e) {
        }
        try {
            snmp.close();
        } catch (Exception e) {
        }
    }
}

Example 8 with ResponseEvent

use of org.snmp4j.event.ResponseEvent in project opennms by OpenNMS.

the class Snmp4JStrategy method send.

private void send(Snmp4JAgentConfig agentConfig, PDU pdu, boolean expectResponse, CompletableFuture<SnmpValue[]> future) {
    Snmp session;
    try {
        session = agentConfig.createSnmpSession();
    } catch (IOException e) {
        LOG.error("send: Could not create SNMP session for agent {}", agentConfig, e);
        future.completeExceptionally(new Exception("Could not create SNMP session for agent"));
        return;
    }
    if (expectResponse) {
        try {
            session.listen();
        } catch (IOException e) {
            LOG.error("send: error setting up listener for SNMP responses", e);
            future.completeExceptionally(new Exception("error setting up listener for SNMP responses"));
            return;
        }
    }
    try {
        if (expectResponse) {
            session.send(pdu, agentConfig.getTarget(), null, new ResponseListener() {

                @Override
                public void onResponse(ResponseEvent responseEvent) {
                    if (expectResponse) {
                        try {
                            future.complete(processResponse(agentConfig, responseEvent));
                        } catch (IOException e) {
                            future.completeExceptionally(e);
                        } finally {
                            // Close the tracker using a separate thread
                            // This allows the SnmpWalker to clean up properly instead
                            // of interrupting execution as it's executing the callback
                            REAPER_EXECUTOR.submit(new Runnable() {

                                @Override
                                public void run() {
                                    closeQuietly(session);
                                }
                            });
                        }
                    }
                }
            });
        } else {
            session.send(pdu, agentConfig.getTarget());
            future.complete(null);
            closeQuietly(session);
        }
    } catch (final IOException e) {
        LOG.error("send: error during SNMP operation", e);
        future.completeExceptionally(e);
    } catch (final RuntimeException e) {
        LOG.error("send: unexpected error during SNMP operation", e);
        future.completeExceptionally(e);
    }
}

Example 9 with ResponseEvent

use of org.snmp4j.event.ResponseEvent in project opennms by OpenNMS.

the class MockAgentTest method testGetSysName.

public void testGetSysName() throws IOException {
    Snmp snmp = new Snmp(new DefaultUdpTransportMapping());
    snmp.listen();
    Address addr = new UdpAddress(InetAddress.getLocalHost(), 9161);
    //Address addr = new UdpAddress(InetAddressUtils.addr("192.168.0.100"), 161);
    Target target = new CommunityTarget(addr, new OctetString("public"));
    target.setVersion(SnmpConstants.version1);
    target.setTimeout(3000);
    target.setRetries(3);
    PDUv1 getRequest = new PDUv1();
    getRequest.add(new VariableBinding(new OID("1.3.6.1.2.1.1.5.0")));
    ResponseEvent e = snmp.get(getRequest, target);
    PDU response = e.getResponse();
    assertEquals(new OctetString("mockhost"), response.get(0).getVariable());
}

Example 10 with ResponseEvent

use of org.snmp4j.event.ResponseEvent in project opennms by OpenNMS.

the class MockSnmpAgentIT method sendRequestV3.

private PDU sendRequestV3(PDU pdu) {
    PDU response = null;
    OctetString userId = new OctetString("opennmsUser");
    OctetString pw = new OctetString("0p3nNMSv3");
    UserTarget target = new UserTarget();
    target.setSecurityLevel(SecurityLevel.AUTH_PRIV);
    target.setSecurityName(userId);
    target.setAddress(new UdpAddress(InetAddressUtils.addr("127.0.0.1"), m_agent.getPort()));
    target.setVersion(SnmpConstants.version3);
    target.setTimeout(DEFAULT_TIMEOUT);
    TransportMapping<UdpAddress> transport = null;
    Snmp snmp = null;
    try {
        USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
        SecurityModels.getInstance().addSecurityModel(usm);
        transport = new DefaultUdpTransportMapping();
        snmp = new Snmp(transport);
        UsmUser user = new UsmUser(userId, AuthMD5.ID, pw, PrivDES.ID, pw);
        snmp.getUSM().addUser(userId, user);
        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;
}