104 lines
3.4 KiB
Go
104 lines
3.4 KiB
Go
/*
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Copyright 2017 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 for Kubernetes helpers.
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package k8sutil
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// MergeResourceRequirements merges two resource requirements together (first overrides second values)
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import (
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"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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var (
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skipSetOwnerRefEnv bool
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testedSetOwnerRef bool
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)
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func MergeResourceRequirements(first, second v1.ResourceRequirements) v1.ResourceRequirements {
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// if the first has a value not set check if second has and set it in first
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if _, ok := first.Limits[v1.ResourceCPU]; !ok {
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if first.Limits == nil {
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first.Limits = v1.ResourceList{}
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}
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first.Limits[v1.ResourceCPU] = second.Limits[v1.ResourceCPU]
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}
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if _, ok := first.Limits[v1.ResourceMemory]; !ok {
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if first.Limits == nil {
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first.Limits = v1.ResourceList{}
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}
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first.Limits[v1.ResourceMemory] = second.Limits[v1.ResourceMemory]
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}
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if _, ok := first.Requests[v1.ResourceCPU]; !ok {
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if first.Requests == nil {
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first.Requests = v1.ResourceList{}
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}
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first.Requests[v1.ResourceCPU] = second.Requests[v1.ResourceCPU]
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}
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if _, ok := first.Requests[v1.ResourceMemory]; !ok {
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if first.Requests == nil {
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first.Requests = v1.ResourceList{}
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}
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first.Requests[v1.ResourceMemory] = second.Requests[v1.ResourceMemory]
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}
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return first
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}
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func SetOwnerRef(clientset kubernetes.Interface, namespace string, object *metav1.ObjectMeta, ownerRef *metav1.OwnerReference) {
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if ownerRef == nil {
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return
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}
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SetOwnerRefs(clientset, namespace, object, []metav1.OwnerReference{*ownerRef})
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}
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func SetOwnerRefs(clientset kubernetes.Interface, namespace string, object *metav1.ObjectMeta, ownerRefs []metav1.OwnerReference) {
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if !testedSetOwnerRef {
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testSetOwnerRef(clientset, namespace, ownerRefs)
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testedSetOwnerRef = true
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}
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if skipSetOwnerRefEnv {
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return
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}
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// We want to set the owner ref unless we detect if it needs to be skipped.
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object.OwnerReferences = ownerRefs
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}
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func testSetOwnerRef(clientset kubernetes.Interface, namespace string, ownerRefs []metav1.OwnerReference) {
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// Confirm if we can create a resource with the ownerref set to the cluster CRD.
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// Some versions of OpenShift may not have support for setting the ownerref to a CRD.
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// See https://github.com/kubernetes/kubernetes/pull/62810
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cm := &v1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: "rook-test-ownerref",
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Namespace: namespace,
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OwnerReferences: ownerRefs,
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},
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Data: map[string]string{},
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}
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_, err := clientset.CoreV1().ConfigMaps(namespace).Create(cm)
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if err != nil && !errors.IsAlreadyExists(err) {
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logger.Warningf("OwnerReferences will not be set on resources created by rook. failed to test that it can be set. %+v", err)
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skipSetOwnerRefEnv = true
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return
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}
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logger.Infof("verified the ownerref can be set on resources")
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skipSetOwnerRefEnv = false
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}
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