40 lines
1.3 KiB
Go
40 lines
1.3 KiB
Go
// Package parser implements decoding and encoding between a flat map of labels and a typed Configuration.
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package parser
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// Decode decodes the given map of labels into the given element.
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// If any filters are present, labels which do not match the filters are skipped.
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// The operation goes through three stages roughly summarized as:
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// labels -> tree of untyped nodes
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// untyped nodes -> nodes augmented with metadata such as kind (inferred from element)
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// "typed" nodes -> typed element
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func Decode(labels map[string]string, element interface{}, rootName string, filters ...string) error {
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node, err := DecodeToNode(labels, rootName, filters...)
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if err != nil {
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return err
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}
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metaOpts := MetadataOpts{TagName: TagLabel, AllowSliceAsStruct: true}
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err = AddMetadata(element, node, metaOpts)
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if err != nil {
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return err
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}
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err = Fill(element, node, FillerOpts{AllowSliceAsStruct: true})
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if err != nil {
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return err
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}
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return nil
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}
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// Encode converts an element to labels.
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// element -> node (value) -> label (node)
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func Encode(element interface{}, rootName string) (map[string]string, error) {
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etnOpts := EncoderToNodeOpts{OmitEmpty: true, TagName: TagLabel, AllowSliceAsStruct: true}
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node, err := EncodeToNode(element, rootName, etnOpts)
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if err != nil {
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return nil, err
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}
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return EncodeNode(node), nil
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}
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