BlackholeSink is a default suitable for use in unit tests.

NamespaceLabel creates a metrics label for the given Namespace: root is "root"; others are path with the final '/' removed.

NewGaugeCollectionProcess creates a new collection process for the callback function given as an argument, and starts it running.

TTLBucket computes the label to apply for a token TTL.

ErrorContentType is the content type returned by an error response.

LogicalTableSizeName is a set of gauge metric keys for logical mount table sizes.

PhysicalTableSizeName is a set of gauge metric keys for physical mount table sizes.

ClusterMetricSink serves as a shim around go-metrics and inserts a "cluster" label.

A GaugeCollectionProcess is responsible for one particular gauge metric.

GaugeLabelValues is one gauge in a set sharing a single key, that are measured in a batch.

SinkWrapper implements `metricsutil.Metrics` using an instance of armon/go-metrics `MetricSink` as the underlying implementation.

GaugeCollector is a callback function that returns an unfiltered set of label-value pairs.

Convenience alias.