Is it possible to remove a reported metric?

[tomkerkhove]

Is it possible to remove a reported metric?

I'm afraid the answer will be no, but you never know.

Relates to tomkerkhove/promitor#1923

[phnx47]

I will investigate about removing a reported metric

About removing 'Labels', we Should implement this:

Metrics with labels SHOULD support a remove() method with the same signature as labels() that will remove a Child from the metric no longer exporting it, and a clear() method that removes all Children from the metric. These invalidate caching of Children.

Just to remove labels, is it enough?

[tomkerkhove]

That would be useful as well but we actually need to remove a full metric in this case.

[sanych-sun]

You can use Remove method of the ICollectorRegistry to remove all samples of the metric:

registry.Remove("my-metric")

Or RemoveLabelled on the metric family to remove the single sample.

[tomkerkhove]

That is correct, I only use IMetricFactory

[sanych-sun]

Good idea, we probably can add Release method(s), that accepts MetricFamily and remove it from the underlying registry. I've create appropriate issue. I will keep you posted and let you know once the changes will be done.

@tomkerkhove meanwhile you can use the approach with access to ICollectorRegistry if it's an urgent requirement for your project.

[tomkerkhove]

Thanks a ton!

[phnx47]

Implemented #178, Published v5.0.0. I will mark as Answered!

[tomkerkhove]

Awesome, thank you!