37 lines
819 B
Go
37 lines
819 B
Go
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package structs
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import (
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"reflect"
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"github.com/hashicorp/go-msgpack/codec"
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)
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// Special encoding for structs.Node, to perform the following:
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// 1. provide backwards compatibility for the following fields:
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// * Node.Drain
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type nodeExt struct{}
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// ConvertExt converts a structs.Node to a struct with the extra field, Drain
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func (n nodeExt) ConvertExt(v interface{}) interface{} {
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node := v.(*Node)
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if node == nil {
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return nil
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}
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type NodeAlias Node
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return &struct {
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*NodeAlias
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Drain bool
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}{
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NodeAlias: (*NodeAlias)(node),
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Drain: node.DrainStrategy != nil,
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}
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}
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// UpdateExt is not used
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func (n nodeExt) UpdateExt(_ interface{}, _ interface{}) {}
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func RegisterJSONEncodingExtensions(h *codec.JsonHandle) *codec.JsonHandle {
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h.SetInterfaceExt(reflect.TypeOf(Node{}), 1, nodeExt{})
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return h
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}
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