Java Meter類代碼示例

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
@ManagedAttribute
public Map<String, Object> getStats() {
    Map<String, Object> stats = new HashMap<String, Object>();
    
    MetricsRegistry registry = Metrics.defaultRegistry();
    for (Entry<MetricName, Metric> e : registry.allMetrics().entrySet()) {
        MetricName name = e.getKey();
        Metric metric = e.getValue();
        
        if (metric instanceof Meter) {
            Meter m = (Meter) metric;
            stats.put(name.toString(), new MeterPOJO(m));
        } else if (metric instanceof Gauge) {
            Gauge<?> g = (Gauge<?>) metric;
            stats.put(name.toString(), g.value());
        }
    }
    
    return stats;
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public static Property getProperty(final Property propertyOrNull, final Metric metric) {
  if (propertyOrNull != null) {
    return propertyOrNull;
  } else {
    // is null, find a default
    if (metric instanceof Counter) {
      return CounterProperty.COUNT;
    } else if (metric instanceof Gauge) {
      return GaugeProperty.VALUE_GAUGE;
    } else if (metric instanceof Timer) {
      return TimerProperty.MEDIAN;
    } else if (metric instanceof Meter) {
      return MeterProperty.FIVE_MINUTE_RATE;
    } else if (metric instanceof Histogram) {
      return HistogramProperty.MEDIAN;
    } else {
      throw new RuntimeException("Unexpected metric type: " + metric.getClass());
    }
  }
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public Number getNumber(final Metric metric, final Snapshot none) {
  if (metric instanceof Meter) {
    Meter meter = (Meter) metric;
    switch(this) {
      case COUNT:
        return meter.count();
      case ONE_MINUTE_RATE:
        return meter.oneMinuteRate();
      case FIVE_MINUTE_RATE:
        return meter.fiveMinuteRate();
      case FIFTEEN_MINUTE_RATE:
        return meter.fifteenMinuteRate();
      case MEAN_RATE:
        return meter.meanRate();
      default:
        throw new RuntimeException("Unexpected property");
    }
  } else {
    throw new IllegalArgumentException("Invalid metric for property");
  }
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
@Test
public void testFetchMeter() throws Exception {
  final MetricName name = new MetricName("gr", "t1", "n1");
  Meter meter = metricsRegistry.newMeter(name, "trolls", TimeUnit.SECONDS);
  meter.mark();
  meter.mark();

  final MuninDataSourceFactory dataSourceFactory = new MuninDataSourceFactory();
  Map<String, MuninGraph> graphs = new HashMap<String, MuninGraph>() {{
    put("foo", new MuninGraph("foo", "gr", "t", asList(dataSourceFactory.forMetric(
        name, null, null, new MuninDataSourceConfig()))));
  }};

  MetricsCommandProcessor sut = new MetricsCommandProcessor(metricsRegistry, new StaticMuninGraphProvider(graphs), hostname);

  // rate will be 0.0 in this test
  assertEquals(asList(
    "n1__five_minute_rate.value 0",
    "."
  )
  , sut.processCommand("fetch", asList("foo")));
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public SimpleQueryParallelCall(AtomicBoolean running, String table, QueryStatus status, Query query,
    Selector selector, Meter queriesInternalMeter, ShardServerContext shardServerContext, boolean runSlow,
    int fetchCount, int maxHeapPerRowFetch, Similarity similarity, TableContext context, Sort sort,
    DeepPagingCache deepPagingCache, MemoryAllocationWatcher memoryAllocationWatcher) {
  _running = running;
  _table = table;
  _status = status;
  _query = query;
  _selector = selector;
  _queriesInternalMeter = queriesInternalMeter;
  _shardServerContext = shardServerContext;
  _runSlow = runSlow;
  _fetchCount = fetchCount;
  _maxHeapPerRowFetch = maxHeapPerRowFetch;
  _similarity = similarity;
  _context = context;
  _sort = sort;
  _deepPagingCache = deepPagingCache;
  _memoryAllocationWatcher = memoryAllocationWatcher;
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
protected MetricsGroup createNewMetricsGroup(String scope) {
  MetricName readRandomAccessName = new MetricName(ORG_APACHE_BLUR, HDFS, "Read Random Latency in \u00B5s", scope);
  MetricName readStreamAccessName = new MetricName(ORG_APACHE_BLUR, HDFS, "Read Stream Latency in \u00B5s", scope);
  MetricName writeAcccessName = new MetricName(ORG_APACHE_BLUR, HDFS, "Write Latency in \u00B5s", scope);
  MetricName readRandomThroughputName = new MetricName(ORG_APACHE_BLUR, HDFS, "Read Random Throughput", scope);
  MetricName readStreamThroughputName = new MetricName(ORG_APACHE_BLUR, HDFS, "Read Stream Throughput", scope);
  MetricName readSeekName = new MetricName(ORG_APACHE_BLUR, HDFS, "Read Stream Seeks", scope);
  MetricName writeThroughputName = new MetricName(ORG_APACHE_BLUR, HDFS, "Write Throughput", scope);
  MetricName totalHdfsBlocks = new MetricName(ORG_APACHE_BLUR, HDFS, "Hdfs Blocks Total", scope);
  MetricName localHdfsBlocks = new MetricName(ORG_APACHE_BLUR, HDFS, "Hdfs Blocks Local", scope);

  Histogram readRandomAccess = Metrics.newHistogram(readRandomAccessName);
  Histogram readStreamAccess = Metrics.newHistogram(readStreamAccessName);
  Histogram writeAccess = Metrics.newHistogram(writeAcccessName);
  Meter readRandomThroughput = Metrics.newMeter(readRandomThroughputName, "Read Random Bytes", TimeUnit.SECONDS);
  Meter readStreamThroughput = Metrics.newMeter(readStreamThroughputName, "Read Stream Bytes", TimeUnit.SECONDS);
  Meter readStreamSeek = Metrics.newMeter(readSeekName, "Read Stream Seeks", TimeUnit.SECONDS);
  Meter writeThroughput = Metrics.newMeter(writeThroughputName, "Write Bytes", TimeUnit.SECONDS);
  Counter totalHdfsBlock = Metrics.newCounter(totalHdfsBlocks);
  Counter localHdfsBlock = Metrics.newCounter(localHdfsBlocks);

  return new MetricsGroup(readRandomAccess, readStreamAccess, writeAccess, readRandomThroughput,
      readStreamThroughput, readStreamSeek, writeThroughput, totalHdfsBlock, localHdfsBlock);
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
private void copyIndexingMetricsToCounters(Context context) {
    final String COUNTER_GROUP = "HBase Indexer Metrics";
    SortedMap<String, SortedMap<MetricName, Metric>> groupedMetrics = Metrics.defaultRegistry().groupedMetrics(
            new IndexerMetricsUtil.IndexerMetricPredicate());
    for (Entry<String, SortedMap<MetricName, Metric>> metricsGroupEntry : groupedMetrics.entrySet()) {
        SortedMap<MetricName, Metric> metricsGroupMap = metricsGroupEntry.getValue();
        for (Entry<MetricName, Metric> metricEntry : metricsGroupMap.entrySet()) {
            MetricName metricName = metricEntry.getKey();
            Metric metric = metricEntry.getValue();
            String counterName = metricName.getType() + ": " + metricName.getName();
            if (metric instanceof Counter) {
                Counter counter = (Counter) metric;
                context.getCounter(COUNTER_GROUP, counterName).increment(counter.count());
            } else if (metric instanceof Meter) {
                Meter meter = (Meter) metric;
                context.getCounter(COUNTER_GROUP, counterName).increment(meter.count());
            } else if (metric instanceof Timer) {
                Timer timer = (Timer) metric;
                context.getCounter(COUNTER_GROUP, counterName).increment((long) timer.sum());
            }
        }
    }
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public EchoMessageHandler(final Meter meter, final int messageSize) {
    this.meter = meter;

    final ByteBuf byteBuf = Unpooled.buffer(messageSize);

    for (int i = 0; i < byteBuf.capacity(); i++) {
        byteBuf.writeByte((byte) i);
    }

    message = new UdtMessage(byteBuf);
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public MeterPOJO(Meter m) {
    count = m.count();
    fifteenMinuteRate = m.fifteenMinuteRate();
    fiveMinuteRate = m.fiveMinuteRate();
    meanRate = m.meanRate();
    rateUnit = m.rateUnit().toString();
    oneMinuteRate = m.oneMinuteRate();
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
private static JsonObject meterToJsonObject(Meter meter) {
    return new JsonObject()
            .add("count", meter.count())
            .add("rate", new JsonObject()
                    .add("1", meter.oneMinuteRate())
                    .add("5", meter.fiveMinuteRate())
                    .add("15", meter.fifteenMinuteRate()));
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
@Test
public final void meter() throws Exception {
  addMetricAndRunReporter(
      new Callable<Meter>() {
        @Override
        public Meter call() throws Exception {
          return createMeter();
        }
      });
  verifyMeter();
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
static Meter createMeter() throws Exception {
  final Meter mock = mock(Meter.class);
  setupMeteredMock(mock);
  return configureMatcher(mock, doAnswer(new MetricsProcessorAction() {
    @Override
    void delegateToProcessor(MetricProcessor<Object> processor, MetricName name, Object context) throws Exception {
      processor.processMeter(name, mock, context);
    }
  }));
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public void mark(final Object param) {
  Meter meter = meters.get(param);
  if (meter == null) {
    final MetricName name = paramMetricName.name(param);
    meter = registry.newMeter(name, eventType, timeUnit);
    final Meter existingMeter = meters.putIfAbsent(param, meter);
    if (existingMeter != null) {
      meter = existingMeter;
    }
  }
  meter.mark();
  total.mark();
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
public static MeterWrapper wrap(final Meter meter) {
  return wrap(new SimpleMeter() {
    @Override
    public void mark(long l) {
      meter.mark(l);
    }
  });
}
 

import com.yammer.metrics.core.Meter; //導入依賴的package包/類
private static BlockingQueue<byte[]> setupBuffers(int bufferSize, int count, Meter meter) {
  BlockingQueue<byte[]> queue = new ArrayBlockingQueue<byte[]>(count);
  for (int i = 0; i < count; i++) {
    meter.mark();
    queue.add(new byte[bufferSize]);
  }
  return queue;
}