Gauge not working with graphite reporter

[Ankit Chiplunkar]

The gauge metric is not working with the graphite_reporter.

To recreate the issue:

1. Run graphite container:

docker run \
 -d \
 --name graphite \
 --restart=always \
 --network host\
 -p 80:80 \
 -p 8080:8080 \
 -p 2003-2004:2003-2004 \
 -p 2023-2024:2023-2024 \
 -p 8125:8125/udp \
 -p 8126:8126 \
 -v /tmp/data/graphite/configs:/opt/graphite/conf \
 -v /tmp/data/graphite/data:/opt/graphite/storage \
 -v /tmp/data/graphite/statsd:/opt/statsd \
 graphiteapp/graphite-statsd

2. Send some metrics to the graphite container, using getSampleReport from helper.js in test/usint:

const metrics = require("metrics"),
  Report = metrics.Report,
  Counter = metrics.Counter,
  Timer = metrics.Timer,
  Meter = metrics.Meter,
  Histogram = metrics.Histogram,
  CachedGauge = metrics.CachedGauge

function getSampleReport() {
  var counter = new Counter();
  counter.inc(5);
  var timer = new Timer();
  for (var i = 1; i <= 100; i++) {
    timer.update(i);
  }
  var meter = new Meter();
  meter.mark(10);
  var hist = new Histogram();
  for (var i = 1; i <= 100; i++) {
    hist.update(i*2);
  }
  var gauge = new CachedGauge(function () {
    return 0.8
  }, 10000);
  var report = new Report();
  report.addMetric("basicCount", counter);
  report.addMetric("myapp.Meter", meter);
  report.addMetric("myapp.Timer", timer);
  report.addMetric("myapp.Histogram", hist);
  report.addMetric("myapp.Gauge", gauge);
  return report;
}

const report = getSampleReport();
const reporter = new metrics.GraphiteReporter(report, "test", "localhost", 2003);
reporter.start(1000);

3. Run the test and send data to graphite

node test.js

4. Checkout graphite browser at localhost:8080

The Gauge folder is missing from graphite, i.e. gauge data was not sent to graphite container

[Andrew Tolbert]

Fixed by #65 and released in v0.1.20, thank you!