forked from rook/rook
Sébastien Han
83eca4b7ae
Debug was used instead of Debugf so types were not interpreted correctly. Signed-off-by: Sébastien Han <seb@redhat.com>
80 lines
2.8 KiB
Go
80 lines
2.8 KiB
Go
/*
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Copyright 2019 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package k8sutil
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import (
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"fmt"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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)
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// CreateOrUpdateService creates a service or updates the service declaratively if it already exists.
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func CreateOrUpdateService(
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clientset kubernetes.Interface, namespace string, serviceDefinition *v1.Service,
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) (*v1.Service, error) {
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name := serviceDefinition.Name
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logger.Debugf("creating service %s", name)
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s, err := clientset.CoreV1().Services(namespace).Create(serviceDefinition)
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if err != nil {
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if !errors.IsAlreadyExists(err) {
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return nil, fmt.Errorf("failed to create service %s. %+v", name, err)
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}
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s, err = UpdateService(clientset, namespace, serviceDefinition)
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if err != nil {
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return nil, fmt.Errorf("failed to update service %s. %+v", name, err)
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}
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}
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return s, err
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}
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// UpdateService updates a service declaratively. If the service does not exist this is considered
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// an error condition.
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func UpdateService(
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clientset kubernetes.Interface, namespace string, serviceDefinition *v1.Service,
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) (*v1.Service, error) {
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name := serviceDefinition.Name
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logger.Debugf("updating service %s", name)
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existing, err := clientset.CoreV1().Services(namespace).Get(name, metav1.GetOptions{})
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if err != nil {
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return nil, fmt.Errorf("could not get existing service %s in order to update. %+v", name, err)
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}
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// ClusterIP is immutable for k8s services and cannot be left empty in k8s v1 API
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serviceDefinition.Spec.ClusterIP = existing.Spec.ClusterIP
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// ResourceVersion required to update services in k8s v1 API to prevent race conditions
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serviceDefinition.ResourceVersion = existing.ResourceVersion
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return clientset.CoreV1().Services(namespace).Update(serviceDefinition)
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}
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// ParseServiceType parses a string and returns a*v1.ServiceType. If the ServiceType is invalid,
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// this should be considered an error.
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func ParseServiceType(serviceString string) v1.ServiceType {
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switch serviceString {
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case "ClusterIP":
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return v1.ServiceTypeClusterIP
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case "ExternalName":
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return v1.ServiceTypeExternalName
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case "NodePort":
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return v1.ServiceTypeNodePort
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case "LoadBalancer":
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return v1.ServiceTypeLoadBalancer
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}
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return v1.ServiceType("")
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}
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