Hello,
Not sure why I get a NPE when setting the `labelNames`, I'm able to provide
labels just fine using the REST API directly but not with the Java Client,
skipping the labels in Java does work fine as well, what gives ?
CollectorRegistry registry = new CollectorRegistry();
final Gauge duration = Gauge.build()
.name(metricName)
.labelNames("l1", "l2")
.help("Duration in seconds.")
.register(registry)
Gauge.Timer durationTimer = duration.startTimer();
java.lang.NullPointerException
at io.prometheus.client.Gauge.startTimer(Gauge.java:283)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
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