Example #1
0
  public RollupTask parseRollupTask(JsonObject rollupTask, String context)
      throws BeanValidationException, QueryException {
    RollupTask task = m_gson.fromJson(rollupTask.getAsJsonObject(), RollupTask.class);

    validateObject(task);

    JsonArray rollups = rollupTask.getAsJsonObject().getAsJsonArray("rollups");
    if (rollups != null) {
      for (int j = 0; j < rollups.size(); j++) {
        JsonObject rollupObject = rollups.get(j).getAsJsonObject();
        Rollup rollup = m_gson.fromJson(rollupObject, Rollup.class);

        context = context + "rollup[" + j + "]";
        validateObject(rollup, context);

        JsonObject queryObject = rollupObject.getAsJsonObject("query");
        List<QueryMetric> queries = parseQueryMetric(queryObject, context);

        for (int k = 0; k < queries.size(); k++) {
          QueryMetric query = queries.get(k);
          context += ".query[" + k + "]";
          validateHasRangeAggregator(query, context);

          // Add aggregators needed for rollups
          SaveAsAggregator saveAsAggregator =
              (SaveAsAggregator) m_aggregatorFactory.createAggregator("save_as");
          saveAsAggregator.setMetricName(rollup.getSaveAs());

          TrimAggregator trimAggregator =
              (TrimAggregator) m_aggregatorFactory.createAggregator("trim");
          trimAggregator.setTrim(TrimAggregator.Trim.LAST);

          query.addAggregator(saveAsAggregator);
          query.addAggregator(trimAggregator);
        }

        rollup.addQueries(queries);
        task.addRollup(rollup);
      }
    }

    return task;
  }
Example #2
0
  private void deserializeProperties(
      String context, JsonObject jsonObject, String name, Object object)
      throws QueryException, BeanValidationException {
    Set<Map.Entry<String, JsonElement>> props = jsonObject.entrySet();
    for (Map.Entry<String, JsonElement> prop : props) {
      String property = prop.getKey();
      if (property.equals("name")) continue;

      PropertyDescriptor pd = null;
      try {
        pd = getPropertyDescriptor(object.getClass(), property);
      } catch (IntrospectionException e) {
        logger.error("Introspection error on " + object.getClass(), e);
      }

      if (pd == null) {
        String msg =
            "Property '"
                + property
                + "' was specified for object '"
                + name
                + "' but no matching setter was found on '"
                + object.getClass()
                + "'";

        throw new QueryException(msg);
      }

      Class propClass = pd.getPropertyType();

      Object propValue;
      try {
        propValue = m_gson.fromJson(prop.getValue(), propClass);
        validateObject(propValue, context + "." + property);
      } catch (ContextualJsonSyntaxException e) {
        throw new BeanValidationException(
            new SimpleConstraintViolation(e.getContext(), e.getMessage()), context);
      } catch (NumberFormatException e) {
        throw new BeanValidationException(
            new SimpleConstraintViolation(property, e.getMessage()), context);
      }

      Method method = pd.getWriteMethod();
      if (method == null) {
        String msg =
            "Property '"
                + property
                + "' was specified for object '"
                + name
                + "' but no matching setter was found on '"
                + object.getClass().getName()
                + "'";

        throw new QueryException(msg);
      }

      try {
        method.invoke(object, propValue);
      } catch (Exception e) {
        logger.error("Invocation error: ", e);
        String msg =
            "Call to "
                + object.getClass().getName()
                + ":"
                + method.getName()
                + " failed with message: "
                + e.getMessage();

        throw new QueryException(msg);
      }
    }
  }
Example #3
0
  private List<QueryMetric> parseQueryMetric(JsonObject obj, String contextPrefix)
      throws QueryException, BeanValidationException {
    List<QueryMetric> ret = new ArrayList<QueryMetric>();

    Query query;
    try {
      query = m_gson.fromJson(obj, Query.class);
      validateObject(query);
    } catch (ContextualJsonSyntaxException e) {
      throw new BeanValidationException(
          new SimpleConstraintViolation(e.getContext(), e.getMessage()), "query");
    }

    JsonArray metricsArray = obj.getAsJsonArray("metrics");
    if (metricsArray == null) {
      throw new BeanValidationException(
          new SimpleConstraintViolation("metric[]", "must have a size of at least 1"),
          contextPrefix + "query");
    }

    for (int I = 0; I < metricsArray.size(); I++) {
      String context =
          (!contextPrefix.isEmpty() ? contextPrefix + "." : contextPrefix)
              + "query.metric["
              + I
              + "]";
      try {
        Metric metric = m_gson.fromJson(metricsArray.get(I), Metric.class);

        validateObject(metric, context);

        long startTime = getStartTime(query, context);
        QueryMetric queryMetric =
            new QueryMetric(startTime, query.getCacheTime(), metric.getName());
        queryMetric.setExcludeTags(metric.isExcludeTags());
        queryMetric.setLimit(metric.getLimit());

        long endTime = getEndTime(query);
        if (endTime > -1) queryMetric.setEndTime(endTime);

        if (queryMetric.getEndTime() < startTime)
          throw new BeanValidationException(
              new SimpleConstraintViolation("end_time", "must be greater than the start time"),
              context);

        queryMetric.setCacheString(query.getCacheString() + metric.getCacheString());

        JsonObject jsMetric = metricsArray.get(I).getAsJsonObject();

        JsonElement group_by = jsMetric.get("group_by");
        if (group_by != null) {
          JsonArray groupBys = group_by.getAsJsonArray();
          parseGroupBy(context, queryMetric, groupBys);
        }

        JsonElement aggregators = jsMetric.get("aggregators");
        if (aggregators != null) {
          JsonArray asJsonArray = aggregators.getAsJsonArray();
          if (asJsonArray.size() > 0)
            parseAggregators(context, queryMetric, asJsonArray, query.getTimeZone());
        }

        JsonElement plugins = jsMetric.get("plugins");
        if (plugins != null) {
          JsonArray pluginArray = plugins.getAsJsonArray();
          if (pluginArray.size() > 0) parsePlugins(context, queryMetric, pluginArray);
        }

        JsonElement order = jsMetric.get("order");
        if (order != null) queryMetric.setOrder(Order.fromString(order.getAsString(), context));

        queryMetric.setTags(metric.getTags());

        ret.add(queryMetric);
      } catch (ContextualJsonSyntaxException e) {
        throw new BeanValidationException(
            new SimpleConstraintViolation(e.getContext(), e.getMessage()), context);
      }
    }

    return (ret);
  }