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Simplify some config loading code
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parent
57d8d208ed
commit
df8bb8812f
1 changed files with 43 additions and 42 deletions
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@ -167,61 +167,62 @@ func LoadConfig(d ConfigSourceDescriptor, doWithConfig ...func(cfg config.Provid
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}
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}
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// This is invoked both after we load the main config and at the end
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// to support OS env override of config options used in the module collector.
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applyOsEnvOverrides := func() error {
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if d.Environ == nil {
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return nil
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}
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const delim = "__env__delim"
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// Apply environment overrides
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if len(d.Environ) > 0 {
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// Extract all that start with the HUGO prefix.
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// The delimiter is the following rune, usually "_".
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const hugoEnvPrefix = "HUGO"
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var hugoEnv []types.KeyValueStr
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for _, v := range d.Environ {
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key, val := config.SplitEnvVar(v)
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if strings.HasPrefix(key, hugoEnvPrefix) {
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delimiterAndKey := strings.TrimPrefix(key, hugoEnvPrefix)
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if len(delimiterAndKey) < 2 {
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continue
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}
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// Allow delimiters to be case sensitive.
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// It turns out there isn't that many allowed special
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// chars in environment variables when used in Bash and similar,
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// so variables on the form HUGOxPARAMSxFOO=bar is one option.
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key := strings.ReplaceAll(delimiterAndKey[1:], delimiterAndKey[:1], delim)
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key = strings.ToLower(key)
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hugoEnv = append(hugoEnv, types.KeyValueStr{
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Key: key,
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Value: val,
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})
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// Extract all that start with the HUGO prefix.
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// The delimiter is the following rune, usually "_".
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const hugoEnvPrefix = "HUGO"
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var hugoEnv []types.KeyValueStr
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for _, v := range d.Environ {
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key, val := config.SplitEnvVar(v)
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if strings.HasPrefix(key, hugoEnvPrefix) {
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delimiterAndKey := strings.TrimPrefix(key, hugoEnvPrefix)
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if len(delimiterAndKey) < 2 {
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continue
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}
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// Allow delimiters to be case sensitive.
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// It turns out there isn't that many allowed special
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// chars in environment variables when used in Bash and similar,
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// so variables on the form HUGOxPARAMSxFOO=bar is one option.
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key := strings.ReplaceAll(delimiterAndKey[1:], delimiterAndKey[:1], delim)
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key = strings.ToLower(key)
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hugoEnv = append(hugoEnv, types.KeyValueStr{
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Key: key,
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Value: val,
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})
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}
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}
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for _, env := range hugoEnv {
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existing, nestedKey, owner, err := maps.GetNestedParamFn(env.Key, delim, v.Get)
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if err != nil {
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return err
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}
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for _, env := range hugoEnv {
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existing, nestedKey, owner, err := maps.GetNestedParamFn(env.Key, delim, v.Get)
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if existing != nil {
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val, err := metadecoders.Default.UnmarshalStringTo(env.Value, existing)
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if err != nil {
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return err
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continue
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}
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if existing != nil {
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val, err := metadecoders.Default.UnmarshalStringTo(env.Value, existing)
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if err != nil {
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continue
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}
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if owner != nil {
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owner[nestedKey] = val
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} else {
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v.Set(env.Key, val)
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}
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} else if nestedKey != "" {
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owner[nestedKey] = env.Value
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if owner != nil {
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owner[nestedKey] = val
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} else {
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v.Set(env.Key, env.Value)
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v.Set(env.Key, val)
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}
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} else if nestedKey != "" {
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owner[nestedKey] = env.Value
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} else {
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v.Set(env.Key, env.Value)
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}
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}
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return nil
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