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Merge pull request #55379 from lichuqiang/admission_fix 

Automatic merge from submit-queue (batch tested with PRs 54556, 55379, 55881, 55891, 55705). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Ensure config file exists before loading configuration in imagePolicyWebhook

**What this PR does / why we need it**:
ensure config file exists before loading configuration in imagePolicyWebhook

**Which issue(s) this PR fixes**
Fixes #55378

**Release note**:

```release-note
NONE
```
pull/6/head
Kubernetes Submit Queue 2017-11-18 07:53:41 -08:00 committed by GitHub
parent a7e76475ef f77e154dbb
commit 5033548574
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4
plugin/pkg/admission/imagepolicy/admission.go
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@ -219,6 +219,10 @@ func (a *Plugin) admitPod(pod *api.Pod, attributes admission.Attributes, review
// For additional HTTP configuration, refer to the kubeconfig documentation
// http://kubernetes.io/v1.1/docs/user-guide/kubeconfig-file.html.
func NewImagePolicyWebhook(configFile io.Reader) (*Plugin, error) {
if configFile == nil {
return nil, fmt.Errorf("no config specified")
}
// TODO: move this to a versioned configuration file format
var config AdmissionConfig
d := yaml.NewYAMLOrJSONDecoder(configFile, 4096)