prometheus/vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/marshal_httpbodyproto.go

44 lines
1.5 KiB
Go

package runtime
import (
"google.golang.org/genproto/googleapis/api/httpbody"
)
// SetHTTPBodyMarshaler overwrite the default marshaler with the HTTPBodyMarshaler
func SetHTTPBodyMarshaler(serveMux *ServeMux) {
serveMux.marshalers.mimeMap[MIMEWildcard] = &HTTPBodyMarshaler{
Marshaler: &JSONPb{OrigName: true},
}
}
// HTTPBodyMarshaler is a Marshaler which supports marshaling of a
// google.api.HttpBody message as the full response body if it is
// the actual message used as the response. If not, then this will
// simply fallback to the Marshaler specified as its default Marshaler.
type HTTPBodyMarshaler struct {
Marshaler
}
// ContentType implementation to keep backwards compatability with marshal interface
func (h *HTTPBodyMarshaler) ContentType() string {
return h.ContentTypeFromMessage(nil)
}
// ContentTypeFromMessage in case v is a google.api.HttpBody message it returns
// its specified content type otherwise fall back to the default Marshaler.
func (h *HTTPBodyMarshaler) ContentTypeFromMessage(v interface{}) string {
if httpBody, ok := v.(*httpbody.HttpBody); ok {
return httpBody.GetContentType()
}
return h.Marshaler.ContentType()
}
// Marshal marshals "v" by returning the body bytes if v is a
// google.api.HttpBody message, otherwise it falls back to the default Marshaler.
func (h *HTTPBodyMarshaler) Marshal(v interface{}) ([]byte, error) {
if httpBody, ok := v.(*httpbody.HttpBody); ok {
return httpBody.Data, nil
}
return h.Marshaler.Marshal(v)
}