/
voluntaryexit.go
116 lines (99 loc) · 3.27 KB
/
voluntaryexit.go
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// Copyright © 2020 Attestant Limited.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package phase0
import (
"bytes"
"encoding/json"
"fmt"
"strconv"
"github.com/goccy/go-yaml"
"github.com/pkg/errors"
)
// VoluntaryExit provides information about a voluntary exit.
type VoluntaryExit struct {
Epoch Epoch
ValidatorIndex ValidatorIndex
}
// voluntaryExitJSON is an internal representation of the struct.
type voluntaryExitJSON struct {
Epoch string `json:"epoch"`
ValidatorIndex string `json:"validator_index"`
}
// voluntaryExitYAML is an internal representation of the struct.
type voluntaryExitYAML struct {
Epoch uint64 `json:"epoch"`
ValidatorIndex uint64 `json:"validator_index"`
}
// MarshalJSON implements json.Marshaler.
func (v *VoluntaryExit) MarshalJSON() ([]byte, error) {
return json.Marshal(&voluntaryExitJSON{
Epoch: fmt.Sprintf("%d", v.Epoch),
ValidatorIndex: fmt.Sprintf("%d", v.ValidatorIndex),
})
}
// UnmarshalJSON implements json.Unmarshaler.
func (v *VoluntaryExit) UnmarshalJSON(input []byte) error {
var voluntaryExitJSON voluntaryExitJSON
err := json.Unmarshal(input, &voluntaryExitJSON)
if err != nil {
return errors.Wrap(err, "invalid JSON")
}
return v.unpack(&voluntaryExitJSON)
}
func (v *VoluntaryExit) unpack(voluntaryExitJSON *voluntaryExitJSON) error {
if voluntaryExitJSON.Epoch == "" {
return errors.New("epoch missing")
}
epoch, err := strconv.ParseUint(voluntaryExitJSON.Epoch, 10, 64)
if err != nil {
return errors.Wrap(err, "invalid value for epoch")
}
v.Epoch = Epoch(epoch)
if voluntaryExitJSON.ValidatorIndex == "" {
return errors.New("validator index missing")
}
validatorIndex, err := strconv.ParseUint(voluntaryExitJSON.ValidatorIndex, 10, 64)
if err != nil {
return errors.Wrap(err, "invalid value for validator index")
}
v.ValidatorIndex = ValidatorIndex(validatorIndex)
return nil
}
// MarshalYAML implements yaml.Marshaler.
func (v *VoluntaryExit) MarshalYAML() ([]byte, error) {
yamlBytes, err := yaml.MarshalWithOptions(&voluntaryExitYAML{
Epoch: uint64(v.Epoch),
ValidatorIndex: uint64(v.ValidatorIndex),
}, yaml.Flow(true))
if err != nil {
return nil, err
}
return bytes.ReplaceAll(yamlBytes, []byte(`"`), []byte(`'`)), nil
}
// UnmarshalYAML implements yaml.Unmarshaler.
func (v *VoluntaryExit) UnmarshalYAML(input []byte) error {
// We unmarshal to the JSON struct to save on duplicate code.
var voluntaryExitJSON voluntaryExitJSON
if err := yaml.Unmarshal(input, &voluntaryExitJSON); err != nil {
return err
}
return v.unpack(&voluntaryExitJSON)
}
// String returns a string version of the structure.
func (v *VoluntaryExit) String() string {
data, err := yaml.Marshal(v)
if err != nil {
return fmt.Sprintf("ERR: %v", err)
}
return string(data)
}