d02f40a5e7
1. Create controllerrevisions (history) and label pods with template hash for both RollingUpdate and OnDelete update strategy 2. Clean up old, non-live history based on revisionHistoryLimit 3. Remove duplicate controllerrevisions (the ones with the same template) and relabel their pods 4. Update RBAC to allow DaemonSet controller to manage controllerrevisions 5. In DaemonSet controller unit tests, create new pods with hash labels
146 lines
4.0 KiB
Go
146 lines
4.0 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes 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 util
|
|
|
|
import (
|
|
"encoding/json"
|
|
"hash/adler32"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
|
|
"k8s.io/kubernetes/pkg/api/v1"
|
|
"k8s.io/kubernetes/pkg/controller"
|
|
hashutil "k8s.io/kubernetes/pkg/util/hash"
|
|
)
|
|
|
|
var podSpec string = `
|
|
{
|
|
"metadata": {
|
|
"creationTimestamp": null,
|
|
"labels": {
|
|
"app": "cats"
|
|
}
|
|
},
|
|
"spec": {
|
|
"containers": [
|
|
{
|
|
"name": "cats",
|
|
"image": "registry/test/cats:v0.@@VERSION@@.0",
|
|
"ports": [
|
|
{
|
|
"name": "http",
|
|
"containerPort": 9077,
|
|
"protocol": "TCP"
|
|
}
|
|
],
|
|
"env": [
|
|
{
|
|
"name": "DEPLOYMENT_ENVIRONMENT",
|
|
"value": "cats-stubbed-functional"
|
|
},
|
|
{
|
|
"name": "APP_NAME",
|
|
"value": "cats"
|
|
}
|
|
],
|
|
"resources": {
|
|
"limits": {
|
|
"cpu": "1",
|
|
"memory": "1Gi"
|
|
},
|
|
"requests": {
|
|
"cpu": "1",
|
|
"memory": "1Gi"
|
|
}
|
|
},
|
|
"livenessProbe": {
|
|
"httpGet": {
|
|
"path": "/private/status",
|
|
"port": 9077,
|
|
"scheme": "HTTP"
|
|
},
|
|
"initialDelaySeconds": 30,
|
|
"timeoutSeconds": 1,
|
|
"periodSeconds": 10,
|
|
"successThreshold": 1,
|
|
"failureThreshold": 3
|
|
},
|
|
"readinessProbe": {
|
|
"httpGet": {
|
|
"path": "/private/status",
|
|
"port": 9077,
|
|
"scheme": "HTTP"
|
|
},
|
|
"initialDelaySeconds": 1,
|
|
"timeoutSeconds": 1,
|
|
"periodSeconds": 10,
|
|
"successThreshold": 1,
|
|
"failureThreshold": 3
|
|
},
|
|
"terminationMessagePath": "/dev/termination-log",
|
|
"imagePullPolicy": "IfNotPresent"
|
|
}
|
|
],
|
|
"restartPolicy": "Always",
|
|
"terminationGracePeriodSeconds": 30,
|
|
"dnsPolicy": "ClusterFirst",
|
|
"securityContext": {}
|
|
}
|
|
}
|
|
`
|
|
|
|
func TestPodTemplateSpecHash(t *testing.T) {
|
|
seenHashes := make(map[uint32]int)
|
|
|
|
for i := 0; i < 1000; i++ {
|
|
specJson := strings.Replace(podSpec, "@@VERSION@@", strconv.Itoa(i), 1)
|
|
spec := v1.PodTemplateSpec{}
|
|
json.Unmarshal([]byte(specJson), &spec)
|
|
hash := controller.ComputeHash(&spec, nil)
|
|
if v, ok := seenHashes[hash]; ok {
|
|
t.Errorf("Hash collision, old: %d new: %d", v, i)
|
|
break
|
|
}
|
|
seenHashes[hash] = i
|
|
}
|
|
}
|
|
|
|
func BenchmarkAdler(b *testing.B) {
|
|
spec := v1.PodTemplateSpec{}
|
|
json.Unmarshal([]byte(podSpec), &spec)
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
getPodTemplateSpecOldHash(spec)
|
|
}
|
|
}
|
|
|
|
func getPodTemplateSpecOldHash(template v1.PodTemplateSpec) uint32 {
|
|
podTemplateSpecHasher := adler32.New()
|
|
hashutil.DeepHashObject(podTemplateSpecHasher, template)
|
|
return podTemplateSpecHasher.Sum32()
|
|
}
|
|
|
|
func BenchmarkFnv(b *testing.B) {
|
|
spec := v1.PodTemplateSpec{}
|
|
json.Unmarshal([]byte(podSpec), &spec)
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
controller.ComputeHash(&spec, nil)
|
|
}
|
|
}
|