nsmap

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v0.20.0 Latest Latest Go to latest Published: Jul 30, 2023 License: Apache-2.0 Imports: 19 Imported by: 0

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nsmap - performs rewriting of Kubernetes namespace in DNS name.

Rewrite DNS names from <service>.<logical-namespace>.svc.<zone> to <service>.<physical-namespace>.svc.<zone>

nsmap

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var (
	// ConfigMapName is the name of the configmap containing logical to physical namespace mappings.
	ConfigMapName = "config-nsmap"
)

func StartWatcher(ctx context.Context, callback OnUpdateFn) error

StartWatcher starts watching for nsmap ConfigMap updates and notifies the given callback when an update occurs. This is a non-blocking function.

type LogicalToPhysicalNamespaceMapper struct {
	Next plugin.Handler
	// contains filtered or unexported fields
}

LogicalToPhysicalNamespaceMapper is a CoreDNS plugin to map logical namespaces to physical namespaces.

func (nm LogicalToPhysicalNamespaceMapper) Name() string

Name implements the Handler interface.

func (nm LogicalToPhysicalNamespaceMapper) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)

ServeDNS implements the plugin.Handler interface.

type OnUpdateFn func(ctx context.Context, configMap *corev1.ConfigMap)

OnUpdateFn is the function signature for receiving ConfigMap updates.