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timestamp.go
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timestamp.go
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// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package marshallers
import (
"errors"
"io"
"strconv"
"code.vegaprotocol.io/vega/datanode/vegatime"
"github.com/99designs/gqlgen/graphql"
)
func MarshalTimestamp(t int64) graphql.Marshaler {
return graphql.WriterFunc(func(w io.Writer) {
// special case for 0 timestamps, returns null
if t == 0 {
io.WriteString(w, "null")
return
}
io.WriteString(w, strconv.Quote(vegatime.Format(vegatime.UnixNano(t))))
})
}
func UnmarshalTimestamp(v interface{}) (int64, error) {
s, ok := v.(string)
if !ok {
return 0, errors.New("expected timestamp to be a string")
}
t, err := vegatime.Parse(s)
if err != nil {
return 0, err
}
return t.UnixNano(), nil
}