示例#1
0
  /**
   * {@inheritDoc}
   *
   * <p>Poll the specified address for service availability.
   *
   * @see #poll(InetAddress, Map)
   */
  public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
    NetworkInterface<InetAddress> iface = svc.getNetInterface();
    if (iface.getType() != NetworkInterface.TYPE_INET)
      throw new NetworkInterfaceNotSupportedException(
          "Unsupported interface type, only TYPE_INET currently supported");
    InetAddress address = (InetAddress) iface.getAddress();

    return poll(address, parameters);
  }
  /**
   * {@inheritDoc}
   *
   * <p>Poll the specified address for service availability.
   *
   * <p>During the poll an attempt is made to call the specified external script or program. If the
   * connection request is successful, the banner line returned as standard output by the script or
   * program is parsed for a partial match with the banner string specified in the poller
   * configuration. Provided that the script's response is valid we set the service status to
   * SERVICE_AVAILABLE and return.
   *
   * <p>The timeout is handled by ExecRunner and is also passed as a parameter to the script or
   * program being called.
   */
  public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
    NetworkInterface<InetAddress> iface = svc.getNetInterface();

    //
    // Process parameters
    //
    ThreadCategory log = ThreadCategory.getInstance(getClass());

    //
    // Get interface address from NetworkInterface
    //
    if (iface.getType() != NetworkInterface.TYPE_INET)
      throw new NetworkInterfaceNotSupportedException(
          "Unsupported interface type, only TYPE_INET currently supported");

    TimeoutTracker tracker = new TimeoutTracker(parameters, DEFAULT_RETRY, DEFAULT_TIMEOUT);

    String hoption = ParameterMap.getKeyedString(parameters, "hoption", "--hostname");
    String toption = ParameterMap.getKeyedString(parameters, "toption", "--timeout");
    //
    // convert timeout to seconds for ExecRunner
    //
    String args = ParameterMap.getKeyedString(parameters, "args", null);

    // Script
    //
    String script = ParameterMap.getKeyedString(parameters, "script", null);
    if (script == null) {
      throw new RuntimeException(
          "GpMonitor: required parameter 'script' is not present in supplied properties.");
    }

    // BannerMatch
    //
    String strBannerMatch = (String) parameters.get("banner");

    // Script standard output
    //
    String scriptoutput = "";

    // Script error output
    //
    String scripterror = "";

    // Get the address instance.
    //
    InetAddress ipv4Addr = (InetAddress) iface.getAddress();

    final String hostAddress = InetAddressUtils.str(ipv4Addr);
    if (log.isDebugEnabled())
      log.debug(
          "poll: address = "
              + hostAddress
              + ", script = "
              + script
              + ", arguments = "
              + args
              + ", "
              + tracker);

    // Give it a whirl
    //
    PollStatus serviceStatus = PollStatus.unavailable();

    for (tracker.reset();
        tracker.shouldRetry() && !serviceStatus.isAvailable();
        tracker.nextAttempt()) {
      try {
        tracker.startAttempt();

        int exitStatus = 100;

        // Some scripts, such as Nagios check scripts, look for -H and -t versus --hostname and
        // --timeout. If the optional parameter option-type is set to short, then the former
        // will be used.

        int timeoutInSeconds = (int) tracker.getTimeoutInSeconds();

        ExecRunner er = new ExecRunner();
        er.setMaxRunTimeSecs(timeoutInSeconds);
        if (args == null)
          exitStatus =
              er.exec(
                  script
                      + " "
                      + hoption
                      + " "
                      + hostAddress
                      + " "
                      + toption
                      + " "
                      + timeoutInSeconds);
        else
          exitStatus =
              er.exec(
                  script
                      + " "
                      + hoption
                      + " "
                      + hostAddress
                      + " "
                      + toption
                      + " "
                      + timeoutInSeconds
                      + " "
                      + args);

        double responseTime = tracker.elapsedTimeInMillis();

        if (exitStatus != 0) {
          scriptoutput = er.getOutString();
          serviceStatus =
              logDown(
                  Level.DEBUG,
                  script
                      + " failed with exit code "
                      + exitStatus
                      + ". Standard out: "
                      + scriptoutput);
        }
        if (er.isMaxRunTimeExceeded()) {

          serviceStatus = logDown(Level.DEBUG, script + " failed. Timeout exceeded");

        } else {
          if (exitStatus == 0) {
            scriptoutput = er.getOutString();
            scripterror = er.getErrString();
            if (!scriptoutput.equals("")) log.debug(script + " output  = " + scriptoutput);
            else log.debug(script + " returned no output");
            if (!scripterror.equals("")) log.debug(script + " error = " + scripterror);
            if (strBannerMatch == null || strBannerMatch.equals("*")) {

              serviceStatus = PollStatus.available(responseTime);

            } else {
              if (scriptoutput.indexOf(strBannerMatch) > -1) {
                serviceStatus = PollStatus.available(responseTime);
              } else {
                serviceStatus =
                    PollStatus.unavailable(
                        script
                            + "banner not contained in output banner='"
                            + strBannerMatch
                            + "' output='"
                            + scriptoutput
                            + "'");
              }
            }
          }
        }

      } catch (ArrayIndexOutOfBoundsException e) {

        serviceStatus = logDown(Level.DEBUG, script + " ArrayIndexOutOfBoundsException", e);

      } catch (IOException e) {

        serviceStatus =
            logDown(
                Level.DEBUG, "IOException occurred. Check for proper operation of " + script, e);

      } catch (Throwable e) {

        serviceStatus = logDown(Level.DEBUG, script + "Exception occurred", e);
      }
    }

    //
    // return the status of the service
    //
    log.debug("poll: GP - serviceStatus= " + serviceStatus + "  " + hostAddress);
    return serviceStatus;
  }
示例#3
0
  @Override
  public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
    NetworkInterface<InetAddress> iface = svc.getNetInterface();

    // Get interface address from NetworkInterface
    //
    if (iface.getType() != NetworkInterface.TYPE_INET)
      throw new NetworkInterfaceNotSupportedException(
          "Unsupported interface type, only TYPE_INET currently supported");

    /*
     * TODO: Use it or loose it.
     * Commented out because it is not currently used in this monitor
     */
    // get parameters
    // int retry = ParameterMap.getKeyedInteger(parameters, "retry", DEFAULT_RETRY);
    // int timeout = ParameterMap.getKeyedInteger(parameters, "timeout", DEFAULT_TIMEOUT);

    // Extract the address
    //
    InetAddress ipv4Addr = (InetAddress) iface.getAddress();

    // Default is a failed status
    //
    PollStatus serviceStatus = PollStatus.unavailable();

    // Attempt to retrieve NetBIOS name of this interface in order
    // to determine if SMB is supported.
    //
    NbtAddress nbtAddr = null;

    /*
     * This try block was updated to reflect the behavior of the plugin.
     */
    final String hostAddress = InetAddressUtils.str(ipv4Addr);

    final boolean doNodeStatus =
        ParameterMap.getKeyedBoolean(parameters, DO_NODE_STATUS, DO_NODE_STATUS_DEFAULT);

    try {
      nbtAddr = NbtAddress.getByName(hostAddress);

      if (doNodeStatus) {
        nbtAddr.getNodeType();
      }

      if (!nbtAddr.getHostName().equals(hostAddress)) serviceStatus = PollStatus.available();

    } catch (UnknownHostException uhE) {
      serviceStatus =
          logDown(
              Level.DEBUG,
              "Unknown host exception generated for "
                  + hostAddress
                  + ", reason: "
                  + uhE.getLocalizedMessage());
    } catch (RuntimeException rE) {
      serviceStatus = logDown(Level.ERROR, "Unexpected runtime exception", rE);
    } catch (Throwable e) {
      serviceStatus = logDown(Level.DEBUG, "Unexpected exception", e);
    }

    //
    // return the status of the service
    //
    return serviceStatus;
  }