traefik/pkg/config/file/file.go

33 lines
951 B
Go
Raw Normal View History

// Package file implements decoding between configuration in a file and a typed Configuration.
package file
import (
2019-08-03 01:58:23 +00:00
"github.com/containous/traefik/v2/pkg/config/parser"
)
// Decode decodes the given configuration file into the given element.
// The operation goes through three stages roughly summarized as:
// file contents -> tree of untyped nodes
// untyped nodes -> nodes augmented with metadata such as kind (inferred from element)
2020-05-11 10:06:07 +00:00
// "typed" nodes -> typed element.
func Decode(filePath string, element interface{}) error {
if element == nil {
return nil
}
filters := getRootFieldNames(element)
root, err := decodeFileToNode(filePath, filters...)
if err != nil {
return err
}
metaOpts := parser.MetadataOpts{TagName: parser.TagLabel, AllowSliceAsStruct: true}
err = parser.AddMetadata(element, root, metaOpts)
if err != nil {
return err
}
return parser.Fill(element, root, parser.FillerOpts{AllowSliceAsStruct: true})
}