Examples with Gauge org.apache.flink.metrics.Gauge used on opensource projects

Example 16 with Gauge

use of org.apache.flink.metrics.Gauge in project flink by apache.

the class MetricQueryService method onReceive.

@Override
public void onReceive(Object message) {
    try {
        if (message instanceof AddMetric) {
            AddMetric added = (AddMetric) message;
            String metricName = added.metricName;
            Metric metric = added.metric;
            AbstractMetricGroup group = added.group;
            QueryScopeInfo info = group.getQueryServiceMetricInfo(FILTER);
            if (metric instanceof Counter) {
                counters.put((Counter) metric, new Tuple2<>(info, FILTER.filterCharacters(metricName)));
            } else if (metric instanceof Gauge) {
                gauges.put((Gauge<?>) metric, new Tuple2<>(info, FILTER.filterCharacters(metricName)));
            } else if (metric instanceof Histogram) {
                histograms.put((Histogram) metric, new Tuple2<>(info, FILTER.filterCharacters(metricName)));
            } else if (metric instanceof Meter) {
                meters.put((Meter) metric, new Tuple2<>(info, FILTER.filterCharacters(metricName)));
            }
        } else if (message instanceof RemoveMetric) {
            Metric metric = (((RemoveMetric) message).metric);
            if (metric instanceof Counter) {
                this.counters.remove(metric);
            } else if (metric instanceof Gauge) {
                this.gauges.remove(metric);
            } else if (metric instanceof Histogram) {
                this.histograms.remove(metric);
            } else if (metric instanceof Meter) {
                this.meters.remove(metric);
            }
        } else if (message instanceof CreateDump) {
            MetricDumpSerialization.MetricSerializationResult dump = serializer.serialize(counters, gauges, histograms, meters);
            getSender().tell(dump, getSelf());
        } else {
            LOG.warn("MetricQueryServiceActor received an invalid message. " + message.toString());
            getSender().tell(new Status.Failure(new IOException("MetricQueryServiceActor received an invalid message. " + message.toString())), getSelf());
        }
    } catch (Exception e) {
        LOG.warn("An exception occurred while processing a message.", e);
    }
}

Example 17 with Gauge

use of org.apache.flink.metrics.Gauge in project flink by apache.

the class TaskExecutorMetricsInitializer method instantiateCPUMetrics.

private static void instantiateCPUMetrics(MetricGroup metrics) {
    try {
        final OperatingSystemMXBean mxBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
        metrics.<Double, Gauge<Double>>gauge("Load", new Gauge<Double>() {

            @Override
            public Double getValue() {
                return mxBean.getProcessCpuLoad();
            }
        });
        metrics.<Long, Gauge<Long>>gauge("Time", new Gauge<Long>() {

            @Override
            public Long getValue() {
                return mxBean.getProcessCpuTime();
            }
        });
    } catch (Exception e) {
        LOG.warn("Cannot access com.sun.management.OperatingSystemMXBean.getProcessCpuLoad()" + " - CPU load metrics will not be available.", e);
    }
}