traefik/pkg/config/dynamic/plugins.go

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package dynamic
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import (
"encoding/json"
"fmt"
"reflect"
)
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// +k8s:deepcopy-gen=false
// PluginConf holds the plugin configuration.
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type PluginConf map[string]any
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// DeepCopyInto is a deepcopy function, copying the receiver, writing into out. in must be non-nil.
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func (in *PluginConf) DeepCopyInto(out *PluginConf) {
if in == nil {
*out = nil
} else {
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*out = deepCopyJSON(*in)
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}
}
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// DeepCopy is a deepcopy function, copying the receiver, creating a new PluginConf.
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func (in *PluginConf) DeepCopy() *PluginConf {
if in == nil {
return nil
}
out := new(PluginConf)
in.DeepCopyInto(out)
return out
}
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// inspired by https://github.com/kubernetes/apimachinery/blob/53ecdf01b997ca93c7db7615dfe7b27ad8391983/pkg/runtime/converter.go#L607
func deepCopyJSON(x map[string]any) map[string]any {
return deepCopyJSONValue(x).(map[string]any)
}
func deepCopyJSONValue(x any) any {
switch x := x.(type) {
case map[string]any:
if x == nil {
// Typed nil - an any that contains a type map[string]any with a value of nil
return x
}
clone := make(map[string]any, len(x))
for k, v := range x {
clone[k] = deepCopyJSONValue(v)
}
return clone
case []any:
if x == nil {
// Typed nil - an any that contains a type []any with a value of nil
return x
}
clone := make([]any, len(x))
for i, v := range x {
clone[i] = deepCopyJSONValue(v)
}
return clone
case string, int64, bool, float64, nil, json.Number:
return x
default:
v := reflect.ValueOf(x)
if v.NumMethod() == 0 {
panic(fmt.Errorf("cannot deep copy %T", x))
}
method := v.MethodByName("DeepCopy")
if method.Kind() == reflect.Invalid {
panic(fmt.Errorf("cannot deep copy %T", x))
}
call := method.Call(nil)
return call[0].Interface()
}
}