Example #1
0
  @Test
  public void testRrdFileCreationForGaugeDataSource() throws Exception {
    // Set sample rate to 1 sec (default is 60 seconds) so that unit test runs quickly
    int sampleRate = 1;
    createJmxCollector("Uptime", JmxCollector.GAUGE_DATA_SOURCE_TYPE, sampleRate);

    String rrdFilename = jmxCollector.getRrdPath();
    assertThat(rrdFilename, is(TEST_DIR + rrdPath));

    rrdDb = new RrdDb(rrdFilename);
    assertThat(rrdDb, not(nullValue()));
    assertThat(rrdDb.isClosed(), is(false));

    Header header = rrdDb.getHeader();
    assertThat(header, not(nullValue()));
    assertThat(header.getStep(), is((long) sampleRate)); // verify 60 second sample rate

    assertThat(rrdDb.getDsCount(), is(1));
    Datasource dataSource = rrdDb.getDatasource(dataSourceName);
    assertThat(dataSource, not(nullValue()));
    DsType dataSourceType = dataSource.getType();
    assertThat(dataSourceType, is(DsType.GAUGE));

    assertThat(rrdDb.getArcCount(), is(8));

    Archive archive = rrdDb.getArchive(ConsolFun.MIN, 1);
    assertThat(archive, not(nullValue()));
    assertThat(archive.getRows(), is(60));

    archive = rrdDb.getArchive(ConsolFun.MIN, 15);
    assertThat(archive, not(nullValue()));
    assertThat(archive.getRows(), is(JmxCollector.ONE_YEAR_IN_15_MINUTE_STEPS));

    archive = rrdDb.getArchive(ConsolFun.MAX, 1);
    assertThat(archive, not(nullValue()));
    assertThat(archive.getRows(), is(60));

    archive = rrdDb.getArchive(ConsolFun.MAX, 15);
    assertThat(archive, not(nullValue()));
    assertThat(archive.getRows(), is(JmxCollector.ONE_YEAR_IN_15_MINUTE_STEPS));

    archive = rrdDb.getArchive(ConsolFun.AVERAGE, 1);
    assertThat(archive, not(nullValue()));
    assertThat(archive.getRows(), is(60));

    archive = rrdDb.getArchive(ConsolFun.AVERAGE, 15);
    assertThat(archive, not(nullValue()));
    assertThat(archive.getRows(), is(JmxCollector.ONE_YEAR_IN_15_MINUTE_STEPS));
  }
Example #2
0
  private void collectData(int numRrdStepIterations) throws Exception {
    String rrdFilename = jmxCollector.getRrdPath();
    rrdDb = new RrdDb(rrdFilename);
    Header header = rrdDb.getHeader();

    // Wait for "n" iterations of RRDB's sample rate, then see if MBean value was collected
    LOGGER.debug("Sleeping for " + (header.getStep() * numRrdStepIterations) + " seconds");
    Thread.sleep((header.getStep() * numRrdStepIterations) * 1000);

    // LOGGER.debug(rrdDb.dump());

    long endTime = Calendar.getInstance().getTimeInMillis() / 1000;

    // +1 because the fetch gets data for times inclusively, e.g.,
    // endTime=12345, so startTime=12345-4=12341,
    // then fetch data for timestamps 12341, 12342, 12343, 12344, 12345 (which is 5 values)
    long startTime = endTime - numRrdStepIterations + 1;
    LOGGER.debug("startTime = " + startTime + ",   endTime = " + endTime);

    FetchRequest fetchRequest = rrdDb.createFetchRequest(ConsolFun.TOTAL, startTime, endTime);
    FetchData fetchData = fetchRequest.fetchData();
    double[] values = fetchData.getValues(dataSourceName);
    assertThat(values.length, is(numRrdStepIterations));
    logFetchData(fetchData, "TOTAL");

    fetchRequest = rrdDb.createFetchRequest(ConsolFun.AVERAGE, startTime, endTime);
    fetchData = fetchRequest.fetchData();
    values = fetchData.getValues(dataSourceName);
    assertThat(values.length, is(numRrdStepIterations));
    logFetchData(fetchData, "AVERAGE");

    fetchRequest = rrdDb.createFetchRequest(ConsolFun.MIN, startTime, endTime);
    fetchData = fetchRequest.fetchData();
    values = fetchData.getValues(dataSourceName);
    assertThat(values.length, is(numRrdStepIterations));
    logFetchData(fetchData, "MIN");

    fetchRequest = rrdDb.createFetchRequest(ConsolFun.MAX, startTime, endTime);
    fetchData = fetchRequest.fetchData();
    values = fetchData.getValues(dataSourceName);
    assertThat(values.length, is(numRrdStepIterations));
    logFetchData(fetchData, "MAX");
  }