io.micrometer.core.instrument.prometheus

Class PrometheusTagFormatter

java.lang.Object

io.micrometer.core.instrument.prometheus.PrometheusTagFormatter

All Implemented Interfaces:

TagFormatter

public class PrometheusTagFormatter
extends java.lang.Object
implements TagFormatter

See https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels for a specification of the constraints on metric names and labels

Constructor Summary

Constructors

Constructor and Description
PrometheusTagFormatter()

Method Summary

Modifier and Type	Method and Description
java.lang.String	formatName(java.lang.String name) Names may contain ASCII letters and digits, as well as underscores and colons.
java.lang.String	formatTagKey(java.lang.String key) Label names may contain ASCII letters, numbers, as well as underscores.
java.lang.String	formatTagValue(java.lang.String value) Label values may contain any Unicode characters.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PrometheusTagFormatter

public PrometheusTagFormatter()

Method Detail

formatName

public java.lang.String formatName(java.lang.String name)

Names may contain ASCII letters and digits, as well as underscores and colons. They must match the regex [a-zA-Z_:][a-zA-Z0-9_:]*

Specified by:

formatName in interface TagFormatter

formatTagKey

public java.lang.String formatTagKey(java.lang.String key)

Label names may contain ASCII letters, numbers, as well as underscores. They must match the regex [a-zA-Z_][a-zA-Z0-9_]*. Label names beginning with __ are reserved for internal use.

Specified by:

formatTagKey in interface TagFormatter

formatTagValue

public java.lang.String formatTagValue(java.lang.String value)

Label values may contain any Unicode characters.

Specified by:

formatTagValue in interface TagFormatter