Examples of net.sourceforge.stat4j.Statistic

net.sourceforge.stat4j.Statistic
Name: Statistic.java Date: Aug 29, 2004 Description: This class represtents a statistic to be evaluated/derived from a log A statistic consists of a calculator and one or two fiters. Filters detect matches or conditions in the log. A match on a filter will trigger a reading to be taken for the statistic. A statistic may be expressed over the units: TIME, MEMORY or VALUE. Value is the default and is typically just a count or optionally a value scraped from the log message itself using the filter scrap expression. Typically statistics that define 2 filters yield dual readings. The first reading will be cached and then the statistic calculated when the second readng has been captured. This allows us to support the concept of deltas (durations, memory usage etc). For a simple statstic that defines just one filter then the reading will be taken whenever a log matches the first filter. Once the reading is taken it will be wrapped inside a metric and forwarded on to the statistic calculator to derive the actual statstic value. @see Filter @see Metric @see Calculator @see Unit @author Lara D'Abreo

    return a;
  }


  public Statistic createStatistic(String name) {
    String prefix = "statistic." + name + ".";
    Statistic s = new Statistic();
    Properties p = Util.createProperties(prefix);
    s.init(name, p);
    return s;
  }

View Full Code Here

        int dot = key.indexOf('.', prefix.length());
        String name = key.substring(prefix.length(), dot);


        if (!stats.containsKey(name)) {


          Statistic s = createStatistic(name);
          stats.put(name, s);
        }
      } //fi
    } // end while
    return (Statistic[]) stats.values().toArray(new Statistic[0]);

View Full Code Here


    HashMap filterMap = new HashMap();


    // Map statistics
    for (int i = 0; i < stats.length; ++i) {
      Statistic s = stats[i];


      statistics.put(s.getName(), s);


      Calculator c = factory.createCalculator(s.getCalculator(), s);
      calculators.put(s.getName(), c);


      // Map filters by regexpression
      // to ensure we only match on a given 
      // expression once
      String matchExp = s.getFirst().getMatch();
      FilterStatisticMap f = (FilterStatisticMap) filterMap.get(matchExp);
      if (f == null) {
        f = new FilterStatisticMap(matchExp);
        filterMap.put(matchExp, f);
      }
      f.getFirsts().add(s);


      if (s.getSecond() != null) {


        matchExp = s.getSecond().getMatch();
        f = (FilterStatisticMap) filterMap.get(matchExp);
        if (f == null) {
          f = new FilterStatisticMap(matchExp);
          filterMap.put(matchExp, f);
        }

View Full Code Here

    FilterStatisticMap filter,
    String log) {


    ArrayList seconds = filter.getSeconds();
    for (int i = 0; i < seconds.size(); ++i) {
      Statistic statistic = (Statistic) seconds.get(i);


      // Get Calculator
      Calculator calculator =
        (Calculator) calculators.get(statistic.getName());


      // Generate Reading
      Reading reading =
        generateReading(statistic, statistic.getSecond(), log);
      if (reading == null)
        continue;


      if (calculator.isApplyImmediate()) {
        Metric metric = new Metric(statistic.getName(), null, reading);
        calculateStatistic(calculator, metric);


      } else {
        matchReading(statistic, calculator, reading);
      }

View Full Code Here

  private void processReadingsThatMatchFirstFilters(
    FilterStatisticMap filter,
    String log) {
    ArrayList firsts = filter.getFirsts();
    for (int i = 0; i < firsts.size(); ++i) {
      Statistic statistic = (Statistic) firsts.get(i);


      // Get Calculator
      Calculator calculator =
        (Calculator) calculators.get(statistic.getName());


      // Generate Reading
      Reading reading =
        generateReading(statistic, statistic.getFirst(), log);
      if (reading == null)
        continue;


      if (calculator.isApplyImmediate()) {
        Metric metric = new Metric(statistic.getName(), reading);
        calculateStatistic(calculator, metric);


      } else {
        cacheReading(statistic, reading);
      }

View Full Code Here

TOP

Related Classes of net.sourceforge.stat4j.Statistic

net.sourceforge.stat4j.config.ResourceBundleStatisticsFactory

net.sourceforge.stat4j.filter.MetricCollector

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.