Example #1
0
  @SuppressWarnings("unchecked")
  /**
   * A compatibility method, snmp starter should be managed as a connection
   *
   * @param node
   * @param p
   * @param host
   */
  private ConnectionInfo parseSnmp(JrdsElement node) {
    try {
      JrdsElement snmpNode = node.getElementbyName("snmp");
      if (snmpNode != null) {
        logger.info("found an old snmp starter, please update to a connection");
        String connectionClassName = "jrds.snmp.SnmpConnection";
        Class<? extends Connection<?>> connectionClass =
            (Class<? extends Connection<?>>) pm.extensionClassLoader.loadClass(connectionClassName);

        Map<String, String> attrs = new HashMap<String, String>();
        attrs.putAll(snmpNode.attrMap());
        return new ConnectionInfo(
            connectionClass, connectionClassName, Collections.emptyList(), attrs);
      }
    } catch (ClassNotFoundException e) {
      logger.debug("Class jrds.snmp.SnmpConnection not found");
    } catch (Exception e) {
      logger.error("Error creating SNMP connection: " + e.getMessage(), e);
    }
    return null;
  }
Example #2
0
  private void parseFragment(
      JrdsElement fragment,
      HostInfo host,
      Map<String, Set<String>> collections,
      Map<String, String> properties)
      throws IllegalArgumentException, SecurityException, IllegalAccessException,
          InvocationTargetException, NoSuchMethodException {

    // Find the connection for this host
    // Will the registered latter, in the starter node, one for each timer
    for (ConnectionInfo cnx : makeConnexion(fragment, host)) {
      host.addConnection(cnx);
    }

    for (JrdsElement tagElem : fragment.getChildElementsByName("tag")) {
      try {
        logger.trace(Util.delayedFormatString("adding tag %s to %s", tagElem, host));
        setMethod(tagElem, host, "addTag");
      } catch (InstantiationException e) {
      }
    }

    for (JrdsElement collectionNode : fragment.getChildElementsByName("collection")) {
      String name = collectionNode.getAttribute("name");
      Set<String> set = new HashSet<String>();
      for (JrdsElement e : collectionNode.getChildElementsByName("element")) {
        set.add(e.getTextContent());
      }
      collections.put(name, set);
    }

    for (JrdsElement macroNode : fragment.getChildElementsByName("macro")) {
      String name = macroNode.getAttribute("name");
      Macro m = macrosMap.get(name);
      logger.trace(Util.delayedFormatString("Adding macro %s: %s", name, m));
      if (m != null) {
        Map<String, String> macroProps = makeProperties(macroNode);
        Map<String, String> newProps =
            new HashMap<String, String>(
                (properties != null ? properties.size() : 0) + macroProps.size());
        if (properties != null) newProps.putAll(properties);
        newProps.putAll(macroProps);
        JrdsDocument hostdoc = (JrdsDocument) fragment.getOwnerDocument();
        // Make a copy of the document fragment
        JrdsNode newDf = JrdsNode.build(hostdoc.importNode(m.getDf(), true));
        JrdsElement macrodef = JrdsNode.build(newDf.getFirstChild());
        parseFragment(macrodef, host, collections, newProps);
      } else {
        logger.error("Unknown macro:" + name);
      }
    }

    for (JrdsElement forNode : fragment.getChildElementsByName("for")) {
      Map<String, String> forattr = forNode.attrMap();
      String iterprop = forattr.get("var");
      Collection<String> set = null;
      String name = forNode.attrMap().get("collection");
      if (name != null) set = collections.get(name);
      else if (forattr.containsKey("min")
          && forattr.containsKey("max")
          && forattr.containsKey("step")) {
        int min = Util.parseStringNumber(forattr.get("min"), Integer.MAX_VALUE);
        int max = Util.parseStringNumber(forattr.get("max"), Integer.MIN_VALUE);
        int step = Util.parseStringNumber(forattr.get("step"), Integer.MIN_VALUE);
        if (min > max || step <= 0) {
          logger.error("invalid range from " + min + " to " + max + " with step " + step);
          break;
        }
        set = new ArrayList<String>((max - min) / step + 1);
        for (int i = min; i <= max; i += step) {
          set.add(Integer.toString(i));
        }
      }

      if (set != null) {
        logger.trace(Util.delayedFormatString("for using %s", set));

        for (String i : set) {
          Map<String, String> temp;
          if (properties != null) {
            temp = new HashMap<String, String>(properties.size() + 1);
            temp.putAll(properties);
            temp.put(iterprop, i);
          } else {
            temp = Collections.singletonMap(iterprop, i);
          }
          parseFragment(forNode, host, collections, temp);
        }
      } else {
        logger.error("Invalid host configuration, collection " + name + " not found");
      }
    }

    for (JrdsElement probeNode : fragment.getChildElements()) {
      if (!"probe".equals(probeNode.getNodeName()) && !"rrd".equals(probeNode.getNodeName()))
        continue;
      try {
        makeProbe(probeNode, host, properties);
      } catch (Exception e) {
        logger.error("Probe creation failed for host " + host.getName() + ": ");
        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        e.printStackTrace(new PrintStream(buffer));
        logger.error(buffer);
      }
    }
  }
Example #3
0
  public Probe<?, ?> makeProbe(JrdsElement probeNode, HostInfo host, Map<String, String> properties)
      throws InvocationTargetException {
    Probe<?, ?> p = null;
    String type = probeNode.attrMap().get("type");

    List<Map<String, Object>> dsList = doDsList(type, probeNode.getElementbyName("dslist"));
    if (dsList.size() > 0) {
      logger.trace(
          Util.delayedFormatString("Data source replaced for %s/%s: %s", host, type, dsList));
      ProbeDesc oldpd = pf.getProbeDesc(type);
      try {
        ProbeDesc pd = (ProbeDesc) oldpd.clone();
        pd.replaceDs(dsList);
        p = pf.makeProbe(pd);
      } catch (CloneNotSupportedException e) {
      }
    } else {
      p = pf.makeProbe(type);
    }
    if (p == null) return null;

    p.readProperties(pm);

    String timerName = probeNode.getAttribute("timer");
    if (timerName == null) timerName = Timer.DEFAULTNAME;
    Timer timer = timers.get(timerName);
    if (timer == null) {
      logger.error("Invalid timer '" + timerName + "' for probe " + host.getName() + "/" + type);
      return null;
    } else {
      logger.trace(Util.delayedFormatString("probe %s/%s will use timer %s", host, type, timer));
    }
    p.setStep(timer.getStep());
    p.setTimeout(timer.getTimeout());

    // The label is set
    String label = probeNode.getAttribute("label");
    if (label != null && !"".equals(label)) {
      logger.trace(Util.delayedFormatString("Adding label %s to %s", label, p));
      p.setLabel(jrds.Util.parseTemplate(label, host, properties));
      ;
    }

    // The host is set
    HostStarter shost = timer.getHost(host);
    p.setHost(shost);

    ProbeDesc pd = p.getPd();
    List<Object> args = ArgFactory.makeArgs(probeNode, host, properties);
    // Prepare the probe with the default beans values
    Map<String, String> defaultBeans = pd.getDefaultArgs();
    if (defaultBeans != null) {
      for (Map.Entry<String, String> e : defaultBeans.entrySet()) {
        try {
          String beanName = e.getKey();
          String beanValue = e.getValue();
          PropertyDescriptor bean = pd.getBeanMap().get(beanName);
          Object value;
          // If the last argument is a list, give it to the template parser
          Object lastArgs = args.isEmpty() ? null : args.get(args.size() - 1);
          if (lastArgs instanceof List) {
            value =
                ArgFactory.ConstructFromString(
                    bean.getPropertyType(), Util.parseTemplate(beanValue, host, lastArgs));
          } else {
            value =
                ArgFactory.ConstructFromString(
                    bean.getPropertyType(), jrds.Util.parseTemplate(beanValue, host));
          }
          logger.trace(
              jrds.Util.delayedFormatString(
                  "Adding bean %s=%s (%s) to default args", beanName, value, value.getClass()));
          bean.getWriteMethod().invoke(p, value);
        } catch (Exception ex) {
          throw new RuntimeException("Invalid default bean " + e.getKey(), ex);
        }
      }
    }

    // Resolve the beans
    try {
      setAttributes(probeNode, p, pd.getBeanMap(), host);
    } catch (IllegalArgumentException e) {
      logger.error(String.format("Can't configure %s for %s: %s", pd.getName(), host, e));
      return null;
    }

    if (!pf.configure(p, args)) {
      logger.error(p + " configuration failed");
      return null;
    }

    // A connected probe, register the needed connection
    // It can be defined within the node, referenced by it's name, or it's implied name
    if (p instanceof ConnectedProbe) {
      String connectionName = null;
      ConnectedProbe cp = (ConnectedProbe) p;
      // Register the connections defined within the probe
      for (ConnectionInfo ci : makeConnexion(probeNode, p)) {
        ci.register(p);
      }
      String connexionName = probeNode.getAttribute("connection");
      if (connexionName != null && !"".equals(connexionName)) {
        logger.trace(Util.delayedFormatString("Adding connection %s to %s", connexionName, p));
        connectionName = jrds.Util.parseTemplate(connexionName, host);
        cp.setConnectionName(connectionName);
      } else {
        connectionName = cp.getConnectionName();
      }
      // If the connection is not already registred, try looking for it
      // And register it with the host
      if (p.find(connectionName) == null) {
        if (logger.isTraceEnabled())
          logger.trace(
              Util.delayedFormatString(
                  "Looking for connection %s in %s", connectionName, host.getConnections()));
        ConnectionInfo ci = host.getConnection(connectionName);
        if (ci != null) ci.register(shost);
        else {
          logger.error(
              Util.delayedFormatString(
                  "Failed to find a connection %s for a probe %s", connectionName, cp));
          return null;
        }
      }
    }

    // A passive probe, perhaps a specific listener is defined
    if (p instanceof PassiveProbe) {
      PassiveProbe<?> pp = (PassiveProbe<?>) p;
      String listenerName = probeNode.getAttribute("listener");
      if (listenerName != null && !listenerName.trim().isEmpty()) {
        Listener<?, ?> l = listeners.get(listenerName);
        if (l != null) {
          pp.setListener(l);
        } else {
          logger.error(
              Util.delayedFormatString("Listener name not found for %s: %s", pp, listenerName));
        }
      }
    }

    shost.addProbe(p);
    return p;
  }