traefik/pkg/server/provider/provider.go

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package provider
import (
"context"
"strings"
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"github.com/containous/traefik/v2/pkg/log"
)
type contextKey int
const (
key contextKey = iota
)
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// AddInContext Adds the provider name in the context.
func AddInContext(ctx context.Context, elementName string) context.Context {
parts := strings.Split(elementName, "@")
if len(parts) == 1 {
log.FromContext(ctx).Debugf("Could not find a provider for %s.", elementName)
return ctx
}
if name, ok := ctx.Value(key).(string); ok && name == parts[1] {
return ctx
}
return context.WithValue(ctx, key, parts[1])
}
// GetQualifiedName Gets the fully qualified name.
func GetQualifiedName(ctx context.Context, elementName string) string {
parts := strings.Split(elementName, "@")
if len(parts) == 1 {
if providerName, ok := ctx.Value(key).(string); ok {
return MakeQualifiedName(providerName, parts[0])
}
}
return elementName
}
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// MakeQualifiedName Creates a qualified name for an element.
func MakeQualifiedName(providerName string, elementName string) string {
return elementName + "@" + providerName
}