34 lines
730 B
Go
34 lines
730 B
Go
package gql
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
)
|
|
|
|
// Represents an IPLD link. Links are generally but not necessarily implemented as CIDs
|
|
type Link string
|
|
|
|
func (l Link) String() string {
|
|
return string(l)
|
|
}
|
|
|
|
// UnmarshalGQLContext implements the graphql.ContextUnmarshaler interface
|
|
func (l *Link) UnmarshalGQLContext(_ context.Context, v interface{}) error {
|
|
s, ok := v.(string)
|
|
if !ok {
|
|
return fmt.Errorf("Link must be a string")
|
|
}
|
|
*l = Link(s)
|
|
return nil
|
|
}
|
|
|
|
// MarshalGQLContext implements the graphql.ContextMarshaler interface
|
|
func (l Link) MarshalGQLContext(_ context.Context, w io.Writer) error {
|
|
encodable := map[string]string{
|
|
"/": l.String(),
|
|
}
|
|
return json.NewEncoder(w).Encode(encodable)
|
|
}
|