31 lines
595 B
Go
31 lines
595 B
Go
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package dynamic
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import (
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"reflect"
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)
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type InstanceIDProvider interface {
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InstanceID() string
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}
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func CallID(obj interface{}) string {
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sv := reflect.ValueOf(obj)
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st := reflect.TypeOf(obj)
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if st.Implements(reflect.TypeOf((*InstanceIDProvider)(nil)).Elem()) {
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m := sv.MethodByName("InstanceID")
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ret := m.Call(nil)
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return ret[0].String()
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}
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if symbol, ok := LookupSymbolField(sv); ok {
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m := sv.MethodByName("ID")
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ret := m.Call(nil)
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return ret[0].String() + ":" + symbol
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}
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// fallback to just ID
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m := sv.MethodByName("ID")
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ret := m.Call(nil)
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return ret[0].String() + ":"
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}
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