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labels.go
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labels.go
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package naming
import (
scyllav1 "github.com/scylladb/scylla-operator/pkg/api/scylla/v1"
appsv1 "k8s.io/api/apps/v1"
"k8s.io/apimachinery/pkg/labels"
)
// ClusterLabels returns a map of label keys and values
// for the given Cluster.
func ClusterLabels(c *scyllav1.ScyllaCluster) map[string]string {
labels := ScyllaLabels()
labels[ClusterNameLabel] = c.Name
return labels
}
// DatacenterLabels returns a map of label keys and values
// for the given Datacenter.
func DatacenterLabels(c *scyllav1.ScyllaCluster) map[string]string {
recLabels := ScyllaLabels()
dcLabels := ClusterLabels(c)
dcLabels[DatacenterNameLabel] = c.Spec.Datacenter.Name
return mergeLabels(dcLabels, recLabels)
}
// RackLabels returns a map of label keys and values
// for the given Rack.
func RackLabels(r scyllav1.RackSpec, c *scyllav1.ScyllaCluster) map[string]string {
recLabels := ScyllaLabels()
rackLabels := DatacenterLabels(c)
rackLabels[RackNameLabel] = r.Name
return mergeLabels(rackLabels, recLabels)
}
// StatefulSetPodLabel returns a map of labels to uniquely
// identify a StatefulSet Pod with the given name
func StatefulSetPodLabel(name string) map[string]string {
return map[string]string{
appsv1.StatefulSetPodNameLabel: name,
}
}
// RackSelector returns a LabelSelector for the given rack.
func RackSelector(r scyllav1.RackSpec, c *scyllav1.ScyllaCluster) labels.Selector {
rackLabelsSet := labels.Set(RackLabels(r, c))
sel := labels.SelectorFromSet(rackLabelsSet)
return sel
}
func ScyllaLabels() map[string]string {
return map[string]string{
"app": AppName,
"app.kubernetes.io/name": AppName,
"app.kubernetes.io/managed-by": OperatorAppName,
}
}
func ManagerSelector() labels.Selector {
return labels.SelectorFromSet(map[string]string{
"app.kubernetes.io/name": ManagerAppName,
})
}
func ScyllaSelector() labels.Selector {
return labels.SelectorFromSet(ScyllaLabels())
}
func mergeLabels(l1, l2 map[string]string) map[string]string {
res := make(map[string]string)
for k, v := range l1 {
res[k] = v
}
for k, v := range l2 {
res[k] = v
}
return res
}