Examples with SeverityComputationUtil com.linkedin.thirdeye.util.SeverityComputationUtil used on opensource projects

Example 1 with SeverityComputationUtil

use of com.linkedin.thirdeye.util.SeverityComputationUtil in project pinot by linkedin.

the class DetectionJobResource method computeSeverity.

/**
   * Returns the weight of the metric at the given window. The calculation of baseline (history) data is specified by
   * seasonal period (in days) and season count. Seasonal period is the difference of duration from one window to the
   * other. For instance, to use the data that is one week before current window, set seasonal period to 7. The season
   * count specify how many seasons of history data to retrieve. If there are more than 1 season, then the baseline is
   * the average of all seasons.
   *
   * Examples of the configuration of baseline:
   * 1. Week-Over-Week: seasonalPeriodInDays = 7, seasonCount = 1
   * 2. Week-Over-4-Weeks-Mean: seasonalPeriodInDays = 7, seasonCount = 4
   * 3. Month-Over-Month: seasonalPeriodInDays = 30, seasonCount = 1
   *
   * @param collectionName the collection to which the metric belong
   * @param metricName the metric name
   * @param startTimeIso start time of current window, inclusive
   * @param endTimeIso end time of current window, exclusive
   * @param seasonalPeriodInDays the difference of duration between the start time of each window
   * @param seasonCount the number of history windows
   *
   * @return the weight of the metric at the given window
   * @throws Exception
   */
@POST
@Path("/anomaly-weight")
public Response computeSeverity(@NotNull @QueryParam("collection") String collectionName, @NotNull @QueryParam("metric") String metricName, @NotNull @QueryParam("start") String startTimeIso, @NotNull @QueryParam("end") String endTimeIso, @QueryParam("period") String seasonalPeriodInDays, @QueryParam("seasonCount") String seasonCount) throws Exception {
    DateTime startTime = null;
    DateTime endTime = null;
    if (StringUtils.isNotBlank(startTimeIso)) {
        startTime = ISODateTimeFormat.dateTimeParser().parseDateTime(startTimeIso);
    }
    if (StringUtils.isNotBlank(endTimeIso)) {
        endTime = ISODateTimeFormat.dateTimeParser().parseDateTime(endTimeIso);
    }
    long currentWindowStart = startTime.getMillis();
    long currentWindowEnd = endTime.getMillis();
    // Default is using one week data priors current values for calculating weight
    long seasonalPeriodMillis = TimeUnit.DAYS.toMillis(7);
    if (StringUtils.isNotBlank(seasonalPeriodInDays)) {
        seasonalPeriodMillis = TimeUnit.DAYS.toMillis(Integer.parseInt(seasonalPeriodInDays));
    }
    int seasonCountInt = 1;
    if (StringUtils.isNotBlank(seasonCount)) {
        seasonCountInt = Integer.parseInt(seasonCount);
    }
    ThirdEyeClient thirdEyeClient = CACHE_REGISTRY_INSTANCE.getQueryCache().getClient();
    SeverityComputationUtil util = new SeverityComputationUtil(thirdEyeClient, collectionName, metricName);
    Map<String, Object> severity = util.computeSeverity(currentWindowStart, currentWindowEnd, seasonalPeriodMillis, seasonCountInt);
    return Response.ok(severity.toString(), MediaType.TEXT_PLAIN_TYPE).build();
}