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Make feature gates loadable from a map[string]bool

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Command line flag API remains the same. This allows ComponentConfig
structures (e.g. KubeletConfiguration) to express the map structure
behind feature gates in a natural way when written as JSON or YAML.

For example:

KubeletConfiguration Before:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates: "DynamicKubeletConfig=true,Accelerators=true"
```

KubeletConfiguration After:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates:
  DynamicKubeletConfig: true
  Accelerators: true
```
This commit is contained in:
Michael Taufen
2017-09-25 13:36:19 -07:00
parent 73d1b38604
commit 131b419596
20 changed files with 228 additions and 42 deletions
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2
cmd/kubelet/kubelet.go
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@@ -65,7 +65,7 @@ func main() {
// TODO(mtaufen): won't need this this once dynamic config is GA
// set feature gates so we can check if dynamic config is enabled
if err := utilfeature.DefaultFeatureGate.Set(defaultConfig.FeatureGates); err != nil {
if err := utilfeature.DefaultFeatureGate.SetFromMap(defaultConfig.FeatureGates); err != nil {
die(err)
}
// validate the initial KubeletFlags, to make sure the dynamic-config-related flags aren't used unless the feature gate is on