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config: Pretty print yaml parser errors #86

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config: Pretty print yaml parser errors #86

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4 changes: 4 additions & 0 deletions config/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,10 @@ func FromYAMLFile(name string, v Validator) error {

d := yaml.NewDecoder(f, yaml.DisallowUnknownField())
if err := d.Decode(v); err != nil {
// The PrettyPrint() method of the yaml parser errors doesn't get triggered automatically, so we've to do
// it via the `yaml.FormatError` helper function. If the provided error implements `yaml.errors.PrettyPrinter`
// we'll get the prettified string of that type, otherwise just error string.
err = errors.New(yaml.FormatError(err, true, true))
return errors.Wrap(err, "can't parse YAML file "+name)
}

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