label

README

KRM Filter - Annotate

Add top-level labels to all resources.

Sometimes labels contain only meta information and, for example, a pod restart is not desired. This function labels only the top level metadata of each resource, in order to avoid pod restarts and problems with immutable fields.

Examples

The function config is a simple configmap-like object where each data key-value pair is one label.

apiVersion: v1
kind: ConfigMap
metadata:
  name: label
data:
  app.kubernetes.io/name: nginx
  app.kubernetes.io/component: ingress-controller

Run the function as standalone providing the function config and resources.

label fn-config.yaml - < resources.yaml

Documentation

Index

• func Processor() framework.ResourceListProcessor
• type FunctionConfig
• type TopLevelLabeler
  • func (a *TopLevelLabeler) Each(r []*yaml.RNode) ([]*yaml.RNode, error)
  • func (a *TopLevelLabeler) Filter(object *yaml.RNode) (*yaml.RNode, error)

Functions

func Processor

func Processor() framework.ResourceListProcessor

Types

type FunctionConfig

type FunctionConfig struct {
	Data map[string]string
}

type TopLevelLabeler

type TopLevelLabeler struct {
	Labels map[string]string
}

func (*TopLevelLabeler) Each

func (a *TopLevelLabeler) Each(r []*yaml.RNode) ([]*yaml.RNode, error)

func (*TopLevelLabeler) Filter

func (a *TopLevelLabeler) Filter(object *yaml.RNode) (*yaml.RNode, error)