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source.go
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source.go
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package confi
import (
"context"
"github.com/pkg/errors"
)
type Source interface {
GetValues(ctx context.Context) (map[string]any, error)
}
type PropertySource []Property
func (s PropertySource) GetValues(ctx context.Context) (map[string]any, error) {
values := make(map[string]any)
for _, prop := range s {
last := len(prop.Path) - 1
container := values
for i, el := range prop.Path {
if i == last {
if existing, ok := container[el].(map[string]any); existing == nil || !ok {
container[el] = prop.Value
}
continue
}
value := container[el]
if _, ok := value.(map[string]any); !ok {
container[el] = make(map[string]any)
}
container, _ = container[el].(map[string]any)
}
}
return values, nil
}
type InputSource struct {
Input Input
Format string
}
func (s InputSource) GetValues(ctx context.Context) (map[string]any, error) {
reader, err := s.Input.Reader()
if err != nil {
return nil, errors.Wrap(err, "open input")
}
defer CloseQuietly(reader)
if s.Format == "properties" {
props, err := readProperties(reader)
if err != nil {
return nil, errors.Wrap(err, "read properties")
}
return PropertySource(props).GetValues(ctx)
}
codec, ok := Codecs[s.Format]
if !ok {
return nil, errors.Wrapf(err, "no codec found for %s", s.Format)
}
values := make(map[string]any)
if err := codec.UnmarshalFn(reader, &values); err != nil {
return nil, err
}
return values, nil
}