flagger/pkg/router/util.go

package router

import (
	"strings"
)

const (
	toolkitMarker         = "toolkit.fluxcd.io"
	toolkitReconcileKey   = "kustomize.toolkit.fluxcd.io/reconcile"
	toolkitReconcileValue = "disabled"
)

func includeLabelsByPrefix(labels map[string]string, includeLabelPrefixes []string) map[string]string {
	filteredLabels := make(map[string]string)
	for key, value := range labels {
		if strings.Contains(key, toolkitMarker) {
			continue
		}
		for _, includeLabelPrefix := range includeLabelPrefixes {
			if includeLabelPrefix == "*" || strings.HasPrefix(key, includeLabelPrefix) {
				filteredLabels[key] = value
				break
			}
		}
	}

	return filteredLabels
}

func filterMetadata(meta map[string]string) map[string]string {
	res := make(map[string]string)
	for k, v := range meta {
		// remove Flux ownership
		if strings.Contains(k, toolkitMarker) {
			continue
		}
		res[k] = v
	}

	// prevent Flux from overriding Flagger managed objects
	res[toolkitReconcileKey] = toolkitReconcileValue
	return res
}