mirror of
https://github.com/wealdtech/ethdo.git
synced 2026-01-08 21:48:05 -05:00
78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
// Copyright © 2021 Weald Technology Trading
|
|
// 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 members
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strings"
|
|
|
|
eth2client "github.com/attestantio/go-eth2-client"
|
|
"github.com/attestantio/go-eth2-client/spec/phase0"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
func process(ctx context.Context, data *dataIn) (*dataOut, error) {
|
|
if data == nil {
|
|
return nil, errors.New("no data")
|
|
}
|
|
|
|
epoch, err := calculateEpoch(ctx, data)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
syncCommittee, err := data.eth2Client.(eth2client.SyncCommitteesProvider).SyncCommitteeAtEpoch(ctx, "head", epoch)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "failed to obtain sync committee information")
|
|
}
|
|
|
|
if syncCommittee == nil {
|
|
return nil, errors.New("no sync committee returned")
|
|
}
|
|
|
|
results := &dataOut{
|
|
debug: data.debug,
|
|
quiet: data.quiet,
|
|
verbose: data.verbose,
|
|
validators: syncCommittee.Validators,
|
|
}
|
|
|
|
return results, nil
|
|
}
|
|
|
|
func calculateEpoch(_ context.Context, data *dataIn) (phase0.Epoch, error) {
|
|
var epoch phase0.Epoch
|
|
if data.epoch != -1 {
|
|
epoch = phase0.Epoch(data.epoch)
|
|
} else {
|
|
switch strings.ToLower(data.period) {
|
|
case "", "current":
|
|
epoch = data.chainTime.CurrentEpoch()
|
|
case "next":
|
|
period := data.chainTime.SlotToSyncCommitteePeriod(data.chainTime.CurrentSlot())
|
|
nextPeriod := period + 1
|
|
epoch = data.chainTime.FirstEpochOfSyncPeriod(nextPeriod)
|
|
default:
|
|
return 0, fmt.Errorf("period %s not known", data.period)
|
|
}
|
|
}
|
|
|
|
if data.debug {
|
|
fmt.Printf("epoch is %d\n", epoch)
|
|
}
|
|
|
|
return epoch, nil
|
|
}
|