Examples with Counter com.codahale.metrics.Counter used on opensource projects

Example 61 with Counter

use of com.codahale.metrics.Counter in project metrics by dropwizard.

the class MetricsModuleTest method serializesCounters.

@Test
public void serializesCounters() throws Exception {
    final Counter counter = mock(Counter.class);
    when(counter.getCount()).thenReturn(100L);
    assertThat(mapper.writeValueAsString(counter)).isEqualTo("{\"count\":100}");
}

Example 62 with Counter

use of com.codahale.metrics.Counter in project metrics by dropwizard.

the class CollectdReporterTest method reportsCounters.

@Test
public void reportsCounters() throws Exception {
    Counter counter = mock(Counter.class);
    when(counter.getCount()).thenReturn(42L);
    reporter.report(map(), map("api.rest.requests.count", counter), map(), map(), map());
    ValueList data = receiver.next();
    assertThat(data.getValues()).containsExactly(42d);
}

Example 63 with Counter

use of com.codahale.metrics.Counter in project hive by apache.

the class Metrics method getOrCreateCounter.

/**
 * Get an existing counter or create a new one if the requested one does not yet exist.  Creation
 * is synchronized to assure that only one instance of the counter is created.
 * @param name name of the counter
 * @return new Counter, or existing one if it already exists.  This will return null if the
 * metrics have not been initialized.
 */
public static Counter getOrCreateCounter(String name) {
    if (self == null)
        return null;
    Map<String, Counter> counters = self.registry.getCounters();
    Counter counter = counters.get(name);
    if (counter != null)
        return counter;
    // Looks like it doesn't exist.  Lock so that two threads don't create it at once.
    synchronized (Metrics.class) {
        // Recheck to make sure someone didn't create it while we waited.
        counters = self.registry.getCounters();
        counter = counters.get(name);
        if (counter != null)
            return counter;
        return self.registry.counter(name);
    }
}

Example 64 with Counter

use of com.codahale.metrics.Counter in project hive by apache.

the class TestMetrics method jsonReporter.

@Test
public void jsonReporter() throws Exception {
    File jsonReportFile = File.createTempFile("TestMetrics", ".json");
    String jsonFile = jsonReportFile.getAbsolutePath();
    Configuration conf = MetastoreConf.newMetastoreConf();
    MetastoreConf.setVar(conf, MetastoreConf.ConfVars.METRICS_REPORTERS, "json");
    MetastoreConf.setVar(conf, MetastoreConf.ConfVars.METRICS_JSON_FILE_LOCATION, jsonFile);
    MetastoreConf.setTimeVar(conf, MetastoreConf.ConfVars.METRICS_JSON_FILE_INTERVAL, REPORT_INTERVAL, TimeUnit.SECONDS);
    Metrics.initialize(conf);
    Counter counter = Metrics.getOrCreateCounter("my-counter");
    for (int i = 0; i < 5; i++) {
        counter.inc();
        // Make sure it has a chance to dump it.
        Thread.sleep(REPORT_INTERVAL * 1000 + REPORT_INTERVAL * 1000 / 2);
        String json = new String(MetricsTestUtils.getFileData(jsonFile, 200, 10));
        MetricsTestUtils.verifyMetricsJson(json, MetricsTestUtils.COUNTER, "my-counter", i + 1);
    }
}

Example 65 with Counter

use of com.codahale.metrics.Counter in project janusgraph by JanusGraph.

the class JanusGraphOperationCountingTest method resetEdgeCacheCounts.

private void resetEdgeCacheCounts() {
    Counter counter = metric.getCounter(metricsPrefix, EDGESTORE_NAME + METRICS_CACHE_SUFFIX, CacheMetricsAction.RETRIEVAL.getName());
    counter.dec(counter.getCount());
    counter = metric.getCounter(metricsPrefix, EDGESTORE_NAME + METRICS_CACHE_SUFFIX, CacheMetricsAction.MISS.getName());
    counter.dec(counter.getCount());
}