-
Notifications
You must be signed in to change notification settings - Fork 0
/
pod.go
104 lines (92 loc) · 3.62 KB
/
pod.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
// Copyright 2017 The Kubernetes Dashboard Authors.
//
// 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 common
import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/pkg/api/helper"
"k8s.io/client-go/pkg/api/v1"
batch "k8s.io/client-go/pkg/apis/batch/v1"
extensions "k8s.io/client-go/pkg/apis/extensions/v1beta1"
)
// FilterPodsByControllerResource returns a subset of pods controlled by given deployment.
func FilterDeploymentPodsByOwnerReference(deployment extensions.Deployment, allRS []extensions.ReplicaSet,
allPods []v1.Pod) []v1.Pod {
var matchingPods []v1.Pod
rsTemplate := v1.PodTemplateSpec{
ObjectMeta: deployment.Spec.Template.ObjectMeta,
Spec: deployment.Spec.Template.Spec,
}
for _, rs := range allRS {
if EqualIgnoreHash(rs.Spec.Template, rsTemplate) {
matchingPods = FilterPodsByControllerRef(&rs, allPods)
}
}
return matchingPods
}
// FilterPodsByControllerRef returns a subset of pods controlled by given controller resource, excluding deployments.
func FilterPodsByControllerRef(owner metav1.Object, allPods []v1.Pod) []v1.Pod {
var matchingPods []v1.Pod
for _, pod := range allPods {
if metav1.IsControlledBy(&pod, owner) {
matchingPods = append(matchingPods, pod)
}
}
return matchingPods
}
func FilterPodsForJob(job batch.Job, pods []v1.Pod) []v1.Pod {
result := make([]v1.Pod, 0)
for _, pod := range pods {
if pod.Namespace == job.Namespace && pod.Labels["controller-uid"] ==
job.Spec.Selector.MatchLabels["controller-uid"] {
result = append(result, pod)
}
}
return result
}
// GetContainerImages returns container image strings from the given pod spec.
func GetContainerImages(podTemplate *v1.PodSpec) []string {
var containerImages []string
for _, container := range podTemplate.Containers {
containerImages = append(containerImages, container.Image)
}
return containerImages
}
// GetContainerNames returns the container image name without the version number from the given pod spec.
func GetContainerNames(podTemplate *v1.PodSpec) []string {
var containerNames []string
for _, container := range podTemplate.Containers {
containerNames = append(containerNames, container.Name)
}
return containerNames
}
// EqualIgnoreHash returns true if two given podTemplateSpec are equal, ignoring the diff in value of Labels[pod-template-hash]
// We ignore pod-template-hash because the hash result would be different upon podTemplateSpec API changes
// (e.g. the addition of a new field will cause the hash code to change)
// Note that we assume input podTemplateSpecs contain non-empty labels
func EqualIgnoreHash(template1, template2 v1.PodTemplateSpec) bool {
// First, compare template.Labels (ignoring hash)
labels1, labels2 := template1.Labels, template2.Labels
if len(labels1) > len(labels2) {
labels1, labels2 = labels2, labels1
}
// We make sure len(labels2) >= len(labels1)
for k, v := range labels2 {
if labels1[k] != v && k != extensions.DefaultDeploymentUniqueLabelKey {
return false
}
}
// Then, compare the templates without comparing their labels
template1.Labels, template2.Labels = nil, nil
return helper.Semantic.DeepEqual(template1, template2)
}