39 lines
692 B
Go
39 lines
692 B
Go
package data
|
|
|
|
import (
|
|
"io"
|
|
"net/url"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
type EncoderHandler interface {
|
|
URLMatcher
|
|
Encode(url *url.URL, data interface{}) (io.Reader, error)
|
|
}
|
|
|
|
type Encoder struct {
|
|
handlers []EncoderHandler
|
|
}
|
|
|
|
func (e *Encoder) Encode(url *url.URL, data interface{}) (io.Reader, error) {
|
|
for _, h := range e.handlers {
|
|
if !h.Match(url) {
|
|
continue
|
|
}
|
|
|
|
reader, err := h.Encode(url, data)
|
|
if err != nil {
|
|
return nil, errors.WithStack(err)
|
|
}
|
|
|
|
return reader, nil
|
|
}
|
|
|
|
return nil, errors.Wrapf(ErrHandlerNotFound, "could not find matching handler for url '%s'", url.String())
|
|
}
|
|
|
|
func NewEncoder(handlers ...EncoderHandler) *Encoder {
|
|
return &Encoder{handlers}
|
|
}
|