86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
package configuration
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import (
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"fmt"
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"github.com/knadh/koanf"
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"github.com/mitchellh/mapstructure"
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"github.com/authelia/authelia/v4/internal/configuration/schema"
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)
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// Load the configuration given the provided options and sources.
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func Load(val *schema.StructValidator, sources ...Source) (keys []string, configuration *schema.Configuration, err error) {
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configuration = &schema.Configuration{}
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keys, err = LoadAdvanced(val, "", configuration, sources...)
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return keys, configuration, err
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}
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// LoadAdvanced is intended to give more flexibility over loading a particular path to a specific interface.
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func LoadAdvanced(val *schema.StructValidator, path string, result interface{}, sources ...Source) (keys []string, err error) {
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if val == nil {
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return keys, errNoValidator
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}
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ko := koanf.NewWithConf(koanf.Conf{
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Delim: constDelimiter,
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StrictMerge: false,
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})
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err = loadSources(ko, val, sources...)
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if err != nil {
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return ko.Keys(), err
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}
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unmarshal(ko, val, path, result)
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return ko.Keys(), nil
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}
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func unmarshal(ko *koanf.Koanf, val *schema.StructValidator, path string, o interface{}) {
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c := koanf.UnmarshalConf{
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DecoderConfig: &mapstructure.DecoderConfig{
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DecodeHook: mapstructure.ComposeDecodeHookFunc(
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mapstructure.StringToSliceHookFunc(","),
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StringToMailAddressHookFunc(),
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ToTimeDurationHookFunc(),
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StringToURLHookFunc(),
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StringToRegexpFunc(),
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),
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Metadata: nil,
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Result: o,
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WeaklyTypedInput: true,
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},
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}
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if err := ko.UnmarshalWithConf(path, o, c); err != nil {
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val.Push(fmt.Errorf("error occurred during unmarshalling configuration: %w", err))
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}
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}
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func loadSources(ko *koanf.Koanf, val *schema.StructValidator, sources ...Source) (err error) {
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if len(sources) == 0 {
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return errNoSources
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}
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for _, source := range sources {
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err := source.Load(val)
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if err != nil {
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val.Push(fmt.Errorf("failed to load configuration from %s source: %+v", source.Name(), err))
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continue
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}
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err = source.Merge(ko, val)
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if err != nil {
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val.Push(fmt.Errorf("failed to merge configuration from %s source: %+v", source.Name(), err))
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continue
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}
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}
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return nil
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}
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