Andy Wilkinson 743482ab69 Tolerate Gauges with non-Number values ...

Spring Boot's metrics infrastructure requires a Metric to have a
Number value. Coda Hale's ThreadStatesGaugeSet includes a Gauge
named deadlocks with a Set<String> value (each entry in the set is a
description, including stacktrace, of a deadlocked thread). There's
no obvious way to coerce this to a Number, and there's already a
deadlocks.count metric in the set.

This commit updates MetricRegistryMetricReader to ignore the addition
of any Gauge with a non-Number value.

Fixes gh-2593

2015-03-05 11:07:58 +00:00

..

main

Tolerate Gauges with non-Number values

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test

Tolerate Gauges with non-Number values

2015-03-05 11:07:58 +00:00