Module deregister_on_drop 

Available on crate feature metrics only.

Labeled metrics that stay registered while any handle for their labels is alive.

Each DeleteOnDropMetric obtained from a vector removes its labels when it drops, even while another handle for the same labels, obtained separately, is still recording. The survivor then records into a series that is no longer exported. This happens when every timely worker creates a metric but only one keeps using it, and when a restarted dataflow creates its metrics before the previous incarnation drops its own.

DeregisterOnDropVec counts handles per label set across all calls, so the series is removed only when the last handle for its labels drops.

Structs

DeregisterOnDropMetric

A labeled metric that stays registered while any handle for its labels is alive.

DeregisterOnDropVec

A metric vector whose handles share one registration per label set.

Registration 🔒

Removes a label set from its vector when the last handle for it drops.

Type Aliases

DeregisterOnDropCounter

A GenericCounter that stays registered while any handle for its labels is alive.

DeregisterOnDropGauge

A GenericGauge that stays registered while any handle for its labels is alive.

DeregisterOnDropHistogram

A Histogram that stays registered while any handle for its labels is alive.

Registrations 🔒

The live registration of each label set, keyed by label values.