topfreegames / pitaya / 34607495191

61%

master: 69%

Pull #506

github

fix(metrics): register prometheus histograms

Histogram vectors were created and stored in histogramReportersMap but
never appended to the collectors passed to prometheus.MustRegister, so
ReportHistogram observed into unregistered collectors and neither the
custom histograms nor the built-in channel_capacity ever showed up on
/metrics.

Register the histogram map alongside counters, gauges and summaries.
The unused response_time_ns histogram is removed: nothing calls
ReportHistogram(ResponseTime), and once registered it would collide
with the summary of the same fully-qualified name and panic on startup.

Closes #504

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

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