abstract class Prometheus::Metric

• Prometheus::Metric
• Reference
• Object

Overview

Base class for all metric types (Counter, Gauge, Histogram, Summary).

This abstract class defines the common interface and behavior for all metrics:

• Each metric has a name, help text, and optional labels
• Names must match the regex [a-zA-Z_:][a-zA-Z0-9_:]*
• Each metric type must implement #type and #collect methods

Metric implementations should be thread-safe and handle concurrent access appropriately.

Direct Known Subclasses

• Prometheus::Counter
• Prometheus::Gauge
• Prometheus::Histogram
• Prometheus::Summary

Defined in:

types.cr

Constructors

• .new(name : String, help : String, labels : Prometheus::LabelSet = LabelSet.new)

Instance Method Summary

• #collect : Array(Sample)
• #help : String
• #labels : LabelSet
• #name : String
• #type : String

Constructor Detail

Instance Method Detail