Examples with InsufficientParametersException org.opennms.netmgt.poller.InsufficientParametersException used on opensource projects

Example 1 with InsufficientParametersException

use of org.opennms.netmgt.poller.InsufficientParametersException in project opennms by OpenNMS.

the class Ssh method tryConnect.

/**
 * Attempt to connect, based on the parameters which have been set in
 * the object.
 *
 * @return true if it is able to connect
 * @throws org.opennms.netmgt.protocols.InsufficientParametersException if any.
 */
protected boolean tryConnect() throws InsufficientParametersException {
    if (getAddress() == null) {
        throw new InsufficientParametersException("you must specify an address");
    }
    try {
        m_socket = new Socket();
        m_socket.setTcpNoDelay(true);
        m_socket.connect(new InetSocketAddress(getAddress(), getPort()), getTimeout());
        m_socket.setSoTimeout(getTimeout());
        m_reader = new BufferedReader(new InputStreamReader(m_socket.getInputStream()));
        m_writer = m_socket.getOutputStream();
        // read the banner
        m_serverBanner = m_reader.readLine();
        // write our own
        m_writer.write((getClientBanner() + "\r\n").getBytes());
        // then, disconnect
        disconnect();
        return true;
    } catch (final NumberFormatException e) {
        LOG.debug("unable to parse server version", e);
        setError(e);
        disconnect();
    } catch (final ConnectException e) {
        LOG.debug("connection failed: {}", e.getMessage());
        setError(e);
        disconnect();
    } catch (final Throwable e) {
        LOG.debug("connection failed", e);
        setError(e);
        disconnect();
    }
    return false;
}

Example 2 with InsufficientParametersException

use of org.opennms.netmgt.poller.InsufficientParametersException in project opennms by OpenNMS.

the class SshMonitor method poll.

/**
 * {@inheritDoc}
 *
 * Poll an {@link InetAddress} for SSH availability.
 *
 * During the poll an attempt is made to connect on the specified port. If
 * the connection request is successful, the banner line generated by the
 * interface is parsed and if the banner text indicates that we are
 * talking
 * to Provided that the interface's response is valid we mark the poll
 * status
 * as available and return.
 * <p>
 * @param address
 * @param parameters
 * @return
 */
public PollStatus poll(final InetAddress address, final Map<String, Object> parameters) {
    TimeoutTracker tracker = new TimeoutTracker(parameters, DEFAULT_RETRY, DEFAULT_TIMEOUT);
    int port = ParameterMap.getKeyedInteger(parameters, "port", DEFAULT_PORT);
    String banner = ParameterMap.getKeyedString(parameters, "banner", null);
    String match = ParameterMap.getKeyedString(parameters, "match", null);
    String clientBanner = ParameterMap.getKeyedString(parameters, "client-banner", Ssh.DEFAULT_CLIENT_BANNER);
    PollStatus ps = PollStatus.unavailable();
    Ssh ssh = new Ssh(address, port, tracker.getConnectionTimeout());
    ssh.setClientBanner(clientBanner);
    Pattern regex = null;
    try {
        if (match == null && (banner == null || banner.equals("*"))) {
            regex = null;
        } else if (match != null) {
            regex = Pattern.compile(match);
            LOG.debug("match: /{}/", match);
        } else if (banner != null) {
            regex = Pattern.compile(banner);
            LOG.debug("banner: /{}/", banner);
        }
    } catch (final PatternSyntaxException e) {
        final String matchString = match == null ? banner : match;
        LOG.info("Invalid regular expression for SSH banner match /{}/: {}", matchString, e.getMessage());
        return ps;
    }
    for (tracker.reset(); tracker.shouldRetry() && !ps.isAvailable(); tracker.nextAttempt()) {
        try {
            ps = ssh.poll(tracker);
        } catch (final InsufficientParametersException e) {
            LOG.error("An error occurred polling host '{}'", address, e);
            break;
        }
        if (!ps.isAvailable()) {
            // not able to connect, retry
            continue;
        }
        // only need to test connectivity and we've got that!
        if (regex == null) {
            return ps;
        } else {
            String response = ssh.getServerBanner();
            if (response == null) {
                return PollStatus.unavailable("server closed connection before banner was received.");
            }
            if (regex.matcher(response).find()) {
                LOG.debug("isServer: matching response={}", response);
                return ps;
            } else {
                // Got a response but it didn't match... no need to attempt
                // retries
                LOG.debug("isServer: NON-matching response={}", response);
                return PollStatus.unavailable("server responded, but banner did not match '" + banner + "'");
            }
        }
    }
    return ps;
}