/
naming.go
88 lines (79 loc) · 3.18 KB
/
naming.go
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// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package utils
import (
"strings"
"k8s.io/api/extensions/v1beta1"
"k8s.io/apimachinery/pkg/runtime/schema"
)
const (
// GardenPurpose is the key of a label which is used for managed resources.
GardenPurpose = "garden.sapcloud.io/purpose"
// GardenCount is the key for count value
GardenCount = "garden.sapcloud.io/count"
// ManagedCert is a common identifier for Cert-Broker.
ManagedCert = "managed-cert"
// IngressRel is the key of a label which identifies the resource's Ingress relation.
IngressRel = "garden.sapcloud.io/ingress-rel"
// CertManagerGroup is the group of the Certificate object
CertManagerGroup = "certmanager.k8s.io"
// CertificateKind is the name of Cert-Manager's certificate
CertificateKind = "Certificate"
// CertificateResource is the resource name of Cert-Manager's certificate
CertificateResource = "certificates"
// CertificateVersion is the version for Cert-Manager's certificate
CertificateVersion = "v1alpha1"
// IngressKind is the name of the Ingress kind
IngressKind = "Ingress"
)
const (
nameSeparator = "."
numOfTokens = 3
namespaceIndex = 1
nameIndex = 2
)
// CertGvr is the Group, Version, Resource information for Cert-Manager's Certificate
var CertGvr = schema.GroupVersionResource{
Group: CertManagerGroup,
Version: CertificateVersion,
Resource: CertificateResource,
}
// SplitNamespace cuts out the namespaces and name portion of the given string.
// The string must have a format used by the control cluster,
// i.e. "cert-broker.<target-cluster-namespace>.<name>"
// If the format varies, namespace and name will be empty.
func SplitNamespace(combinedString string) (namespace, name string) {
parts := strings.SplitN(combinedString, nameSeparator, numOfTokens)
size := len(parts)
if size == 1 {
return "", combinedString
} else if size == numOfTokens {
return parts[namespaceIndex], parts[nameIndex]
}
return "", ""
}
// CreateNameForControlCluster creates a resource name used by the control cluster.
// This is especially used to avoid name clashes in the control cluster.
func CreateNameForControlCluster(namespace string, name string) string {
return ManagedCert + nameSeparator + namespace + nameSeparator + name
}
// FilterOnIngressLables takes an Ingress and returns whether it has a label
// dedicated to resources managed by Cert-Broker.
func FilterOnIngressLables(obj interface{}) bool {
ing, ok := obj.(*v1beta1.Ingress)
if !ok {
return false
}
return ing.Labels[GardenPurpose] == ManagedCert
}