traefik/pkg/config/label/label.go

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// Package label implements the decoding and encoding between flat labels and a typed Configuration.
package label
import (
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"github.com/containous/traefik/v2/pkg/config/dynamic"
"github.com/traefik/paerser/parser"
)
// DecodeConfiguration converts the labels to a configuration.
func DecodeConfiguration(labels map[string]string) (*dynamic.Configuration, error) {
conf := &dynamic.Configuration{
HTTP: &dynamic.HTTPConfiguration{},
TCP: &dynamic.TCPConfiguration{},
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UDP: &dynamic.UDPConfiguration{},
}
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err := parser.Decode(labels, conf, parser.DefaultRootName, "traefik.http", "traefik.tcp", "traefik.udp")
if err != nil {
return nil, err
}
return conf, nil
}
// EncodeConfiguration converts a configuration to labels.
func EncodeConfiguration(conf *dynamic.Configuration) (map[string]string, error) {
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return parser.Encode(conf, parser.DefaultRootName)
}
// Decode converts the labels to an element.
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// labels -> [ node -> node + metadata (type) ] -> element (node).
func Decode(labels map[string]string, element interface{}, filters ...string) error {
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return parser.Decode(labels, element, parser.DefaultRootName, filters...)
}